Мануал ямаха фзс 600

Ниже представлены прямые ссылки на скачку сервисной документации.

Для Yamaha FZS 600

• Руководство пользователя (Owners Manual) на Yamaha FZS 600 (на русском языке)
• Сервисный мануал (Service Manual) на Yamaha FZS 600 (1998)
• Дополнение к сервисному мануалу (Supplementary Service Manual) на Yamaha FZS 600 (2000)
• Дополнение к сервисному мануалу (Supplementary Service Manual) на Yamaha FZS 600 (2002)
• Информация по обслуживанию (Service Information) на Yamaha FZS 600 (2002)
• Руководство по ремонту и обслуживанию (Haynes Service & Repair Manual) на Yamaha YZF600 Thundercat
• Каталог запчастей (микрофиши) на Yamaha FZS 600 (1999)
• Каталог запчастей (микрофиши) на Yamaha FZS 600 (2003)

Обзор модели

• Yamaha FZS 600

Источник — «https://bikeswiki.ru/index.php?title=Yamaha_FZS600:_мануалы&oldid=9955»

Категория:

• Сервисная документация

• Contents

• Table of Contents

• Troubleshooting

• Bookmarks

Summary of Contents for Yamaha FZS600’98

EB000000

FZS600SERVICE MANUAL

1997 by Yamaha Motor Co., Ltd.First edition, December 1997

All rights reserved. Any reproduction orunauthorized use without the writtenpermission of Yamaha Motor Co., Ltd.

is expressly prohibited.

NOTE:

CAUTION:

EB001000

NOTICEThis manual was produced by the Yamaha Motor Company primarily for use by Yamaha dealers andtheir qualified mechanics. It is not possible to include all the knowledge of a mechanic in one manual,so it is assumed that anyone who uses this book to perform maintenance and repairs on Yamahascooter has a basic understanding of the mechanical ideas and the procedures of scooter repair.Repairs attempted by anyone without this knowledge are likely to render the scooter unfit for use.

Yamaha Motor Company, Ltd. is continually striving to improve all its models. Modifications andsignificant changes in specifications or procedures will be forwarded to all authorized Yamaha dealersand will appear in future editions of this manual where applicable.

Designs and specifications ar subject to change without notice.

IMPORTANT INFORMATIONParticularly important information is distinguished in this manual by the following.

The Safety Alert Symbol means ATTENTION! BECOME ALERT! YOURSAFETY IS INVOLVED!

Failure to follow WARNING instructions could result in severe injury or death tothe motorcycle operator, a bystander or a person inspecting or repairing themotorcycle.

A CAUTION indicates special precautions that must be taken to avoid damageto the motorcycle.

NOTE: A NOTE provides key information to make procedures easier or clearer.

7

2 1 4 3

8

6

5

YP002000

HOW TO USE THIS MANUALThis manual is intended as a handy, easy-to-read reference book for the mechanic. Comprehensiveexplanations of all installation, removal,disassembly, assembly, repair and inspection procedures arelaid out with the individual steps in sequential order.1 The manual is divided into chapters. An abbreviation and symbol in the upper right corner of eachpage indicate the current chapter. Refer to “SYMBOLS” on the following page.

2 Each chapter is divided into sections. The current section title is shown at the top of each page,except in Chapter 3 (“Periodic Inspections and Adjustments”), where the sub-section title (-s) appear.

(In Chapter3, “Periodic Inspections and Adjustments”, the sub-section title appears at the top of eachpage, instead of the section title.)

3 Sub-section titles appear in smaller print than the section title.

4 To help identify parts and clarify procedure steps, there are exploded diagrams at the start of eachremoval and disassembly section.

5 Numbers are given in the order of the jobs in the exploded diagram. A circled number indicates adisassembly step.

6 Symbols indicate parts to be lubricated or replaced (see “SYMBOLS”).

7 A job instruction chart accompanies the exploded diagram, providing the order of jobs, names ofparts, notes in jobs, etc.

8 Jobs requiring more information (such as special tools and technical data) are descridedsequentially.

1

3

5

7

9

11

13

15

18

2

4

8

10

12

14

16

6

21

24 25

17

19 20

22 23

EB003000

SYMBOLSThe following symbols are not relevant to everyvehicle.Symbols 1 to 9 indicate the subject of eachchapter.

1 General information2 Specifications3 Periodic inspection and adjustment4 Engine5 Cooling system6 Carburetor(-s)7 Chassis8 Electrical system9 TroubleshootingSymbols 10 to 17 indicate the following.

10 Serviceable with engine mounted11 Filling fluid12 Lubricant13 Special tool14 Tightening torque15 Wear limit, clearance16 Engine speed17 Electrical dataSymbols 18 to 23 in the exploded diagramsindicate the types of lubricants and lubricationpoints.

18 Apply engine oil19 Apply gear oil20 Apply molybdenum disulfide oil21 Apply wheel bearing grease22 Apply lightweight lithium-soap base grease23 Apply molybdenum disulfide greaseSymbols 24 to 25 in the exploded diagramsindicate the following:

24 Apply locking agent (LOCTITE )25 Use new one

GENERAL INFORMATION

SPECIFICATIONS

PERIODIC INSPECTIONS AND ADJUSTMENTS

ENGINE

COOLING SYSTEM

CARBURETORS

CHASSIS

ELECTRICAL SYSTEM

TROUBLESHOOTING

GENINFO 1SPEC 2CHKADJ 3ENG 4

COOL 5CARB 6CHAS 7ELEC 8TRBLSHTG 9

INDEX

GENINFO

1

GENINFO

CHAPTER 1GENERAL INFORMATION

MOTORCYCLE IDENTIFICATION 1-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . VEHICLE IDENTIFICATION NUMBER 1-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . MODEL CODE 1-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

IMPORTANT INFORMATION 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . PREPARATION FOR REMOVAL AND DISASSEMBLY 1-2. . . . . . . . . . . . . . . . . . . . . . REPLACEMENT PARTS 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GASKETS, OIL SEALS AND O-RINGS 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . LOCK WASHERS/PLATES AND COTTER PINS 1-3. . . . . . . . . . . . . . . . . . . . . . . . . . . BEARINGS AND OIL SEALS 1-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CIRCLIPS 1-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

CHECKING THE CONNECTIONS 1-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SPECIAL TOOLS 1-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

GENINFO

1-1

GENINFOMOTORCYCLE IDENTIFICATION

1

1

EB100000

GENERAL INFORMATIONMOTORCYCLE IDENTIFICATION

EB100010

VEHICLE IDENTIFICATION NUMBERThe vehicle identification number 1 is stampedinto the right side of the steering head.

EB100020

MODEL CODEThe model code label 1 is affixed to the frame.This information will be needed to order spareparts.

1-2

springlip

oilgrease

lip

GENINFOIMPORTANT INFORMATION

EB102000

IMPORTANT INFORMATIONPREPARATION FOR REMOVAL ANDDISASSEMBLY1. Before removal and disassembly, remove all

dirt, mud, dust and foreign material.2. Use only the proper tools and cleaning

equipment.Refer to the “SPECIAL TOOLS” section.

3. When disassembling, always keep matedparts together. This includes gears, cylin-ders, pistons and other parts that have been“mated” through normal wear.Mated parts must always be reused or re-placed as an assembly.

4. During disassembly, clean all of the partsand place them in trays in the order of disas-sembly. This will speed up assembly and al-low for the correct installation of all parts.

5. Keep all parts away from any source of fire.

EB102010

REPLACEMENT PARTS1. Use only genuine Yamaha parts for all re-

placements. Use oil and grease recom-mended by Yamaha for all lubrication jobs.Other brands may be similar in-function andappearance, but inferior in quality.

EB102020

GASKETS, OIL SEALS AND O-RINGS1. When overhauling the engine, replace all

gaskets, seals and O-rings. All gasket sur-faces, oil seal lips and O-rings must becleaned.

2. During reassembly, properly oil all matingparts and bearings and apply grease ontothe oil seal lips.

1-3

OR

GENINFOIMPORTANT INFORMATION

CAUTION:

EB102030

LOCK WASHERS/PLATES AND COTTERPINS1. After removal, replace all lock washers/

plates 1 and cotter pins. After the bolt or nuthas been tightened to specification, bendthe lock tabs along a flat of the bolt or nut.

EB102040

BEARINGS AND OIL SEALS1. Install bearings and oil seals so that the

manufacturer’s marks or numbers are vis-ible. When installing oil seals, apply a lightcoat of lithium soap base grease onto the oilseal lips. Oil bearings liberally when instal-ling, if appropriate.1 Oil seal

Do not spin the bearing with compressedair because this will damage the bearingsurfaces.

1 Bearing

EB102050

CIRCLIPS1. Before reassembly, check all circlips careful-

ly and replace damaged or distorted circlips.Always replace piston pin clips after oneuse. When installing a circlips 1 , make surethat the sharp-edged corner 2 , is positionedopposite the thrust 3 that the circlip re-ceives.4 Shaft

1-4

GENINFOCHECKING THE CONNECTIONS

NOTE:

NOTE:

NOTE:

EB103000

CHECKING THE CONNECTIONSCheck the leads, couplers, and connectors forstains, rust, moisture, etc.

1. Disconnect: lead coupler connector

2. Check: lead coupler connector

Moisture Dry with an air blower.Rust/stains Connect and disconnectseveral times.

3. Check: all connections

Loose connection Connect properly.

If the pin 2 on the terminal is flattened, bendin up.

4. Connect: lead coupler connector

Make sure that all connections are tight.

5. Check: continuity

(with a pocket tester)

Pocket tester90590-03112

If there is no continuity, clean the termi-nals.

When checking the wire harness, performsteps 1 to 3.

As a quick remedy, use a contact revitaliz-er available at most part stores.

1-5

GENINFOSPECIAL TOOLS

12

12

12

1

EB104000

SPECIAL TOOLSThe following special tools are necessary forcomplete and accurate tune-up and assembly.Use only the appropriate special tools as this willhelp prevent damage caused by the use ofinappropriate tools or improvised techniques.When placing an order, refer to the list providedbelow to avoid any mistakes.

Tool No. Tool name/Usage Illustration

90890-01268 Ring nut wrench

This tool is used to loosen and tighten thesteering ringnut.

90890-01304 Piston pin puller

This tool is used to remove the piston pin.

90890-01460-01326

Damper rod holderT-handle

These tool ar used for holding the damper rodwhen removing or installing the damper rod.

90890-01312 Fuel level gauge

This gauge is used to measure the fuel levelin the float chamber.

90890-01325-01352

Radiator cap testerAdaptor

These tools are used for checking the coolingsystem.

90890-01362-01382

Flywheel pullerCrank shaft protector

These tools are used for removing the rotorand starter clutch.

90890-01367-01381

Fork seal driver weightFork seal driver attachment (ø41 mm)

These tools are used when installing theforkseal.

1-6

GENINFOSPECIAL TOOLS

1

Tool No. Tool name/Usage Illustration

90890-01399 Special thickness gauge

This tool is used to measure the valveclearance.

90890-01401 Spark plug wrench

This tool is used for removing or installingthe spark plug.

90890-01403 Ring nut wrench

This tool is used to tighten the steering ringnut.

90890-01469 Oil filter wrench

This tool is used for removing or installingthe oil filter.

90890-01701 Sheave holder

This tool is used for holding the magneto rotor.

90890-03081 Compression gauge

This tool is used to measure the enginecompression

90890-03094 Vacuum gauge

This tool is used to measure thesynchronizing the carburetors.

90890-03112 Pocket tester

These instruments are invaluable forchecking the electrical system.

90890-03133 Engine tachometer

This tool is needed for detecting engine rpm.

90890-03153-03139

Oil pressure gaugeOil pressure adaptor H

These tools are used to measure the engineoil pressure.

1-7

GENINFOSPECIAL TOOLS

12

1

Tool No. Tool name/Usage Illustration

90890-03141 Timing light

This tool is necessary for checking ignitiontiming.

90890-04044 Piston ring compressor

This tool is used to compress piston ringswhen installing the cylinder.

90890-03158 Carburetor angle driver

This tool is used to adjust the pilot screw.

90890-04086 Clutch holding tool

This tool is used for holding the clutch boss.

90890-04101 Valve lapper

This tool is used for removing and installingthe valve lifter and for lapping the valve.

90890-04111 Valve guide remover (4.0 mm)

This tool is used to remove the valve guides.

90890-04112 Valve guide installer (4.0 mm)

This tool is needed to install the valve guidesproperly.

90890-04113 Valve guide reamer (4.0 mm)

This tool is used to rebore the new valveguide.

90890-04019-04114

Valve spring compressorValve spring compressor attachment

These tools are used when removing orinstalling the valve and the valve spring.

90890-06754 Ignition checker

This instrument is necessary for checkingthe ignition system components.

1-8

GENINFOSPECIAL TOOLS

Tool No. Tool name/Usage Illustration

90890-85505 Yamaha bond No.1215

This sealant (bond) is used for crankcasemating surface, etc.

SPEC

2

SPEC

CHAPTER 2SPECIFICATIONS

GENERAL SPECIFICATIONS 2-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . MAINTENANCE SPECIFICATIONS 2-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

ENGINE 2-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CHASSIS 2-10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ELECTRICAL 2-14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

GENERAL TIGHTENING TORQUE SPECIFICATIONS 2-17. . . . . . . . . . . . . . . . . . . . . . . LUBRICATIONS AND LUBRICANT TYPES 2-18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

ENGINE 2-18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CHASSIS 2-19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

COOLING SYSTEM DIAGRAMS 2-20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . LUBRICATION DIAGRAMS 2-22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CABLE ROUTING 2-25. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

SPEC

2-1

GENERAL SPECIFICATIONS SPEC

SPECIFICATIONSGENERAL SPECIFICATIONS

Model FZS600

Model code: 5DM1

Dimensions:Overall lengthOverall widthOverall heightSeat heightWheelbaseMinimum ground clearanceMinimum turning radius

2,080 mm710 mm1,170 mm790 mm1,415 mm130 mm2,900 mm

Basic weight:With oil and full fuel tank 210 kg

Engine:Engine typeCylinder arrangementDisplacementBore strokeCompression ratioCompression pressure (STD)Starting systemLubrication system:

Liquid cooled 4-stroke, DOHCForward inclined parallel 4-cylinder599 cm3

62.0 49.6 mm12 : 11,550 kPa/400 r/min (15.5 kgf/cm2)Electric starterWet sump

Oil type or grade:

Engine oil API STANDARD:SE or higher gradeACEA STANDARD:G4 or G5

Periodic oil changeWith oil filter replacementTotal amount

2.5 L2.7 L3.5 L

Radiator capacityTotal amount (including all routes)

1.95 L

Air filter: Dry type element

Fuel:TypeFuel tank capacityFuel reserve amount

Regular unleaded gasoline18 L3.5 L

2-2

GENERAL SPECIFICATIONS SPEC

Model FZS600

Carburetor:Type/quantityManufacturer

BSR 33/4MIKUNI

Spark plug:TypeManufacturerSpark plug gap

CR9E, CR8E/U27ESR-NU24ESR-NNGK/DENSO0.7 0.8 mm

Clutch type: Wet, multiple-disc

Transmission:Primary reduction systemPrimary reduction ratioSecondary reduction systemSecondary reduction ratioTransmission typeOperationGear ratio 1st

2nd3rd4th5th6th

Spur gear82/48 (1.708)Chain drive48/15 (3.200)Constant mesh 6-speedLeft foot operation37/13 (2.846)37/19 (1.947)34/22 (1.545)28/21 (1.333)25/21 (1.190)29/27 (1.074)

Chassis:Frame typeCaster angleTrail

Double cradle2488 mm

Tire:TypeSize front

rearManufacturer front

rearType front

rear

Tubeless110/70ZR 17 (54W)160/60ZR 17 (69W)BRIDGESTONE/DUNLOPBRIDGESTONE/DUNLOPBT-57F/D207FBT-57R/D207J

Tire pressure:Maximum load-except motorcycleLoading condition A*

frontrear

Loading condition B*frontrear

High-speed ridingfrontrear

187 kg0 90 kg225 kPa (2.25 kg/cm2, 2.25 bar)250 kPa (2.5 kg/cm2, 2.5 bar)90 187 kg225 kPa (2.25 kg/cm2, 2.25 bar)280 kPa (2.8 kg/cm2, 2.8 bar)

225 kPa (2.25 kg/cm2, 2.25 bar)280 kPa (2.8 kg/cm2, 2.8 bar)

*Load is the total weight of cargo, rider, passenger, and accessories.

2-3

GENERAL SPECIFICATIONS SPEC

Model FZS600

Brake:Front brake type

operationRear brake type

operation

Dual disc brakeRight hand operationSingle disc brakeRight foot operation

Suspension:Front suspensionRear suspension

Telescopic forkSwingarm (link suspension)

Shock absorber:Front shock absorberRear shock absorber

Coil spring/Oil damperCoil spring/Gas-oil damper

Wheel travel:Front wheel travelRear wheel travel

120 mm120 mm

Electrical:Ignition systemGenerator systemBattery typeBattery capacity

T.C.I. (digital)A.C. magnetoGT12B-412V 10 AH

Headlight bulb type: Halogen bulb

Bulb voltage, wattage quantity:HeadlightBrake/tail lightFront turn signal lightRear turn signal lightLicense lightMeter lightIndicator lightNeutral indicator lightHigh beam indicator lightOil level warning lightTurn indicator lightFuel level warning lightEngine temperature warning light

12V 60 W/55 W 212V 21W/5W 212V 21 W 212V 21 W 212V 5 W 212V 2 W 3

12V 1.4 W 112V 1.4 W 112V 1.4 W 112V 1.4 W 212V 1.4 W 1LED

2-4

MAINTENANCE SPECIFICATIONS SPEC

Face Width Seat Width Margin Thickness

MAINTENANCE SPECIFICATIONSENGINE

Item Standard Limit

Cylinder head:Warp limit 0.05 mm

Cylinder:Bore sizeTaper limitOut of round limit

62.00 62.01 mm

62.1 mm0.09 mm0.07 mm

Camshaft:Drive methodCam cap inside dia.Camshaft out side dia.Camshaft to cap clearanceCam dimensions:Intake “A”

“B”“C”

Exhaust “A”“B”“C”

Camshaft runout limit

Chain drive (center)23.000 23.021 mm23.967 22.980 mm0.020 0.054 mm

32.75 32.85 mm25.0 25.1 mm7.65 7.85 mm32.45 32.55 mm24.95 25.05 mm7.4 7.6 mm

0.08 mm

32.7 mm24.95 mm7.5 mm32.4 mm24.9 mm7.25 mm0.03 mm

Cam chain:Cam chain type/No. of linksCam chain adjustment method

92RH2010J/130Automatic

Valve, valve seat, valve guide:Valve clearance (cold) IN

EX0.11 0.20 mm0.21 0.30 mm

Valve dimensions:

“A” head dia. INEX

“B” face width INEX

“C” seat width INEX

“D” margin thickness INEX

Stem outside dia. INEX

Guide inside dia. INEX

23.9 24.1 mm20.9 21.1 mm1.56 2.40 mm1.56 2.40 mm0.9 1.1 mm0.9 1.1 mm0.6 0.8 mm0.6 0.8 mm3.975 3.990 mm3.960 3.975 mm4.000 4.012 mm4.000 4.012 mm

1.6 mm1.6 mm0.5 mm0.5 mm3.95 mm3.935 mm4.042 mm4.042 mm

2-5

MAINTENANCE SPECIFICATIONS SPEC

Item Standard Limit

Stem-to-guide clearance INEX

Stem runout limitValve seat width IN

EX

0.010 0.037 mm0.025 0.052 mm

0.9 1.1 mm0.9 1.1 mm

0.08 mm0.1 mm0.04 mm1.6 mm1.6 mm

Valve spring:Free length IN/EXSet length (valve closed) IN/EXCompressed pressure IN/EXTilt limit IN/EXDirection of winding IN/EX

40.09 mm34.5 mm134 156 N (13.4 15.6 kg)

Clockwise

37.5 mm

2.5 /1.8 mm

Piston:Piston clearancePiston size “D”Measuring point “H”Piston off-setPiston off-set directionPiston pin bore inside dia.Piston pin outside dia.

0.025 0.050 mm61.960 61.975 mm5 mm0.5 mmIn side17.002 17.013 mm16.991 17.000 mm

0.07 mm

Piston rings:Top ring:TypeDimensions (B T)End gap (installed)Side clearance (installed)

2nd ring:TypeDimensions (B T)End gap (installed)Side clearance (installed)

Oil ring:End gap (installed)

Barrel0.8 2.2 mm0.15 0.30 mm0.020 0.075 mm

Taper0.8 2.3 mm0.25 0.40 mm0.020 0.055 mm1.5 2.3 mm0.10 0.35 mm

0.6 mm0.1 mm

0.7 mm0.1 mm

Connecting rod:Oil clearanceColor code (corresponding size)

0.043 0.066 mm1. Blue 2. Black 3. Brown 4. Green

0.08 mm

Crankshaft:Crankshaft width “A”Assembly width “B”Runout limit “C”Big end side clearance “D”Big end radial clearance “E”Small end free play “F”Journal oil clearanceColor code (corresponding size)

48.4 mm296.8 298.0 mm

0.160 0.262 mm0.043 0.066 mm0.32 0.50 mm0.025 0.043 mm1. Black 2. Brown 3. Green 4. Yellow5. Pink

0.03 mm0.5 mm0.08 mm0.8 mm0.08 mm

2-6

MAINTENANCE SPECIFICATIONS SPEC

Item Standard Limit

Clutch:Friction plate thicknessQuantityWear limit

Friction plate thicknessQuantity

Clutch plate thicknessQuantityWarp limit

Clutch spring free lengthQuantityMinimum length

Clutch housing thrust clearanceClutch housing radial clearanceClutch release methodPush rod bending limit

2.94 3.06 mm8 pcs

2.94 3.06 mm1 pcs1.9 2.1 mm8 pcs

34.9 mm6 pcs

0.05 0.13 mm0.005 0.041 mmInner push, screw push

2.8 mm

0.1 mm

34.3 mm0.2 mm

0.3 mm

Transmission:Main axle deflection limitDrive axle deflection limit

0.02 mm0.02 mm

Shifter:Shifter typeGuide bar bending limit

Guide bar

0.05 mm

Carburetor:I.D. markMain jet (M.J)Main air jet (M.A.J)Jet needle (J.N)Needle jet (N.J)Pilot air jet (P.A.J.1)Pilot outlet (P.O)Pilot jet (P.J)Bypass 1 (B.P.1)Bypass 2 (B.P.2)Bypass 3 (B.P.3)Pilot screw (P.S)Valve seat size (V.S)Starter jet (G.S.1)Starter jet (G.S.2)Throttle valve size (TH.V)Fuel level (F.L) (with

special tool)Engine idle speedIntake vacuum

5DM1 00#115#805D86P-O#1300.9#12.50.90.80.821.00.60.8#1104.5 mm

1,150 1,250 r/min30.7 33.3 kPa (230 250 mmHg)

2-7

MAINTENANCE SPECIFICATIONS SPEC

Item Standard Limit

Lubrication system:Oil filter typeOil pump typeTip clearance “A” or “B”Side clearanceBypass valve setting pressureRelief valve operating pressurePressure check location

Paper typeTrochoid type0.03 0.09 mm0.03 0.08 mm80 120 kPa (0.8 1.2 kg/cm2)450 550 kPa (4.5 5.5 kg/cm2)Main gallery

0.15 mm0.15 mm

Cooling system:Radiator core size:WidthHeightThickness

Radiator cap opening pressureRadiator capacityReservoir tank capacityFrom low to full level

320 mm161.4 mm27 mm95 125 kPa (0.95 1.25 kg/cm2)0.6 L0.61 L0.22 L

Water pump:TypeReduction ratio

Single suction centrifugal pump82/48 48/49 (1.673)

Item Size

Bearings and oil seals:Big end bearingCrankshaft bearingCrankshaft oil sealWater pump bearingWater pump oil sealMain axle bearing (left)Main axle bearing (right)Drive axle bearing (left)Drive axle bearing (right)Drive axle oil sealShift shaft oil seal

Plane 30 15Plane 30 16S3-29-40-7.5L HSBWF26-44RSD-12-28-7-1 HSBall 6204DLA8NUR83B285SH2C3 22 56 1683424ASH2CS4120NQ3315NE 20 33 15SD7-35-52-8 VSSD-12-22-5 HS

2-8

MAINTENANCE SPECIFICATIONS SPEC

TIGHTENING TORQUESENGINE

Part to be tightened Part name Threadsize Q’ty

Tighteningtorque Remarksg size y

Nm mkgCamshaft cap Bolt M6 24 10 1.0Cylinder head Nut M9 12 35 3.5Spark plug – M10 4 13 1.3Cylinder head cover Bolt M6 8 10 1.0Cylinder head side cover Bolt M5 8 9 0.9Connecting rod cap Nut M7 8 See NOTECamshaft sprocket Bolt M7 4 24 2.4Timing chain tensioner case Bolt M6 2 10 1.0Timing chain guide (intake side) Bolt M6 2 10 1.0Timing chain tensioner cap Bolt M11 1 20 2.0Pipe 2 Bolt M6 2 10 1.0Pipe 3/Pipe 4 Bolt M6 2 10 1.0Thermostat cover Bolt M6 3 10 1.0Conduction assembly Bolt M6 1 10 1.0Radiator Bolt M6 3 7 0.7Joint Bolt M6 4 10 1.0Water pump Bolt M6 2 10 1.0Water pump housing Bolt M6 2 10 1.0Radiator cover Bolt M6 4 8 0.8Pipe 5/Pipe 6 Bolt M6 4 10 1.0Roter housing Screw M6 1 7 0.7Oil pump assembly Bolt M6 3 10 1.0Strainer housing Bolt M6 2 10 1.0Strainer cover Bolt M6 14 12 1.2Oil cooler Union bolt M20 1 63 6.3Oil drain bolt Bolt M14 1 43 4.3Delivery pipe Bolt M10 2 20 2.0Delivery pipe holder Bolt M6 1 10 1.0Oil filter element – M20 1 17 1.7Carburetor joint 1.2 Bolt M6 8 10 1.0Cap case to air filter case Screw M5 4 1 0.1Air filter case Bolt M6 3 7 0.7Air filter cover to air clearance Screw M6 6 2 0.2Exhaust pipe Nut M6 8 10 1.0Exhaust joint Bolt M8 1 20 2.0Crankcase Bolt M8 12 24 2.4Crankcase Bolt M6 21 12 1.2Crankcase Bolt M8 1 24 2.4Breather plate Screw M6 6 7 0.7Oil seal stopper plate Bolt M6 2 10 1.0A.C magneto cover Bolt M6 5 12 1.2Drive sprocket cover Bolt M6 5 10 1.0Drive sprocket cover Screw M5 4 4 0.4

2-9

MAINTENANCE SPECIFICATIONS SPEC

NOTE:

Lower crankcase Upper crankcase

Part to be tightened Part name Threadsize Q’ty

Tighteningtorque Remarksg size y

Nm mkgStarter cover Bolt M6 7 12 1.2Oil gallery – M16 2 8 0.8Clutch cover Bolt M6 10 12 1.2Clamp (A.C magneto cover) Screw M6 1 7 0.7Starter clutch assembly Bolt M10 1 80 8.0Starter clutch outer Bolt M8 3 30 3.0Pressure plate Screw M6 6 8 0.8Clutch boss Bolt M18 1 70 7.0Push lever Screw M5 2 5 0.5Push rod adjuster Nut M8 1 16 1.6Drive sprocket Nut M18 1 70 7.0Shift drum retainer Bolt M6 1 10 1.0Shift arm Bolt M6 1 10 1.0Shift fork guide bar retainer Bolt M6 2 10 1.0Shift pedal adjuster Nut M6 2 7 0.7Stopper lever Bolt M6 1 10 1.0Side plate 2 Screw M5 1 4 0.4A.C magneto roter Bolt M12 1 130 13.0Stator coil Bolt M6 3 10 1.0Pickup coil Screw M5 2 5 0.5Starter motor Bolt M6 2 10 1.0Neutral switch Screw M6 2 4 0.4Oil level sensor Bolt M6 2 7 0.7Thermo switch (fan motor) – M16 1 23 2.3Thermo switch (warning light) – PT1/8 1 8 0.8

After tightening to 15 Nm (1.5 mkg), tighten another 90.

Crankcase tightening sequence

2-10

MAINTENANCE SPECIFICATIONS SPEC

CHASSIS

Item Standard Limit

Steering system:Steering bearing type

Angular bearing

Front suspension:Front fork travelFork spring free lengthFitting lengthCollar lengthSpring Rate (K1)

(K2)Stroke (K1)

(K2)Optional springOil capacityOil levelOil grade

120 mm323 mm315.9 mm200 mm7.5 N/mm (0.75 kg/mm)14 N/mm (1.4 kg/mm)0 70 mm70 120 mmNo475 cm3

121 mmFork oil 10W or equivalent

319 mm

Rear suspension:Shock absorber travelSpring free lengthFitting lengthSpring Rate (K1)Stroke (K1)Optional springEnclosed gas/air pressure (STD)

50 mm177 mm168 mm147 N/mm (14.7 kg/mm)0 50 mmNo1200 kPa (12 kg/cm2)

Swingarm:gSwingarm free play limit-end 1 mmSwingarm free play limit-side 1 mm

Front wheel:TypeRim sizeRim materialRim runout limit radial

lateral

Cast wheel17 MT3.00Aluminum

1 mm0.5 mm

Rear wheel:TypeRim sizeRim materialRim runout limit radial

lateral

Cast wheel17 MT5.00Aluminum

1 mm0.5 mm

Drive chain:Type/manufacturerNo. of linksChain free play

50VA7/DAIDO11030 40 mm

2-11

MAINTENANCE SPECIFICATIONS SPEC

Item Standard Limit

Front disc brake:TypeDisc outside dia. thicknessDisc deflection limitPad thickness InnerPad thickness OuterMaster cylinder inside dia.Caliper cylinder inside dia.

Brake fluid type

Dual298 4 mm

5.5 mm5.5 mm14 mm30.2 mm27 mmDOT No.4

0.2 mm0.5 mm0.5 mm

Rear disc brake:TypeDisc outside dia. thicknessDisc deflection limitPad thickness innerPad thickness outerMaster cylinder inside dia.Caliper cylinder inside dia.Brake fluid type

Single245 5 mm

5.5 mm5.5 mm12.7 mm38.1 mmDOT No.4

0.15 mm0.5 mm0.5 mm

Brake lever and brake pedal:Brake pedal position (N) 36.6 mm

Clutch lever free play (lever end)Th l i f l

10 15 mm

Throttle grip free play 3 5 mm

Item Size

Bearings and oil seals:Pivot shaft bearingFront wheel bearing (left)Front wheel bearing (right)Rear wheel bearing (left)Rear wheel bearing (right)Rear wheel oil seal (right)Clutch hub bearingClutch hub oil seal

TA2428Z/24 31 286203LLU/2A 17 40 126203 LLU/2A 17 40 126204 2RS 20 47 146204 2RS 20 47 14SD-28-47-7-162062RS 30 62 16MHSA-40-62-8-B

2-12

MAINTENANCE SPECIFICATIONS SPEC

TIGHTENING TORQUESCHASSIS

Part to be tightened Thread sizeTightening

torque Remarksg

Nm mkgUpper bracket and inner tube M8 1.25 30 3.0Upper bracket and steering stem M22 1.0 110 11.0Handlebar under holder M10 1.25 40 4.0Handlebar upper holder M8 1.25 23 2.3Under bracket and inner tube M10 1.25 30 3.0Ring nut (steering stem) M25 1.0 – – NOTEMaster cylinder bracket M6 1.0 10 1.0Master cylinder cap M4 0.7 2 0.2Brake hose union bolt M10 1.25 30 3.0Grip end M10 1.0 7 0.7Cowling stay M8 1.25 33 3.3Cowling bracket M6 1.0 7 0.7Front fender M6 1.0 7 0.7Engine bracket (front) M8 1.25 33 3.3Engine mount (front) M10 1.25 55 5.5Engine mount (rear upper) M10 1.25 55 5.5Engine mount (rear under) M10 1.25 55 5.5Engine bracket (rear) M8 1.25 33 3.3Pivot shaft M16 1.5 11.5 11.5Rear shock absorber (upper) M10 1.25 40 4.0Rear shock absorber and relay arm M10 1.25 40 4.0Relay arm and rear shock absorber bracket M10 1.25 48 4.8Relay arm and connecting rod M12 1.25 48 4.8Connecting rod and rear arm M12 1.25 48 4.8Chain guide M6 1.0 7 0.7Chain case M6 1.0 7 0.7Fuel tank (front) M6 1.0 10 1.0Fuel tank (rear) M6 1.0 10 1.0Fuel tank bracket (rear) M6 1.0 7 0.7Cap M5 0.8 6 0.6Fuel cock M6 1.0 7 0.7Fuel sender M5 0.8 4 0.4Ignition coil M6 1.0 7 0.7Seat lock M6 1.0 7 0.7Roter M6 1.0 7 0.7Rear fender and frame M6 1.0 7 0.7Taillight bracket and rear fender M6 1.0 7 0.7Tail cover and Taillight bracket M5 0.8 4 0.4Tail cover and frame M6 1.0 7 0.7Rear turn signal light M6 1.0 7 0.7Taillight M6 1.0 4 0.4

2-13

MAINTENANCE SPECIFICATIONS SPEC

NOTE:

Part to be tightened Thread sizeTightening

torque RemarksgNm mkg

Side cover and frame M6 1.0 4 0.4Garb bar M8 1.25 19 1.9Front wheel axle M16 1.5 67 6.7Front wheel axle pinch bolt M8 1.0 20 2.0Front brake caliper M8 1.25 40 4.0Front brake disc M8 1.25 23 2.3Front brake caliper bleed screw M7 1.0 6 0.6Compression bar M8 1.25 23 2.3Rear wheel sprocket M10 1.25 60 6.0Drive chain puller nut M8 1.25 16 1.6Rear brake caliper and caliper bracket M10 1.25 40 4.0Rear wheel axle nut M18 1.5 117 11.7Rear brake hose union bolt M10 1.25 30 3.0Rear brake caliper bleed screw M7 1.0 6 0.6Rear brake disc M8 1.25 23 2.3Sidestand M8 1.25 23 2.3Bracket footrest and frame M8 1.25 28 2.8Rear master cylinder and bracket M8 1.25 23 2.3Footrest bracket and footrest M10 1.25 55 5.5Footrest bracket (rear) and frame M8 1.25 28 2.8Center stand nut M10 1.25 56 5.6Footrest bracket and exhaust pipe M8 1.25 20 2.0Footrest bracket (rear) and muffler M10 1.25 30 3.0

1. First, tighten the ring nut (lower) approximately 52 Nm (5.2 mkg) by using the torque wrench, thenloosen the right nut completely.

2. Second, tighten the ring nut (lower) approximately 18 Nm (1.8 mkg) by using the torque wrench,then finger tighten the ring nut (center). Align the slots both ring nut and install the lock washer.

3. Final, hold the ring nuts (lower and center) and tighten the ring nut (upper) 110 Nm (11.0 mkg) byusing the torque wrench.

2-14

MAINTENANCE SPECIFICATIONS SPEC

ELECTRICAL

Item Standard Limit

Voltage 12 V

Ignition system:Ignition timing (B.T.D.C.)Advanced timing (B.T.D.C.)Advance type

10 /1,250 r/min50 /4,500 r/minTPS and electrical type

T.C.I.:Pickup coil resistanceT.C.I. unit model/manufacturer

189 231 Ω Y-LJ4T085/MITSUBISHI

Ignition coil:Model/manufacturerPrimary winding resistanceSecondary winding resistance

J0313/DENSO1.87 2.53 Ω at 20C12 18 kΩ at 20C

Spark plug cap:TypeResistance

Resin type10 kΩ

Charging system:TypeModel/manufacturerStandard outputStator coil resistance

A.C. magnetoF4T359/MITSUBISHI12 V 18 A at 5,000 r/min0.36 0.44 Ω at 20C/W-W

Voltage regulator:TypeModel/manufacturerNo load regulated voltage

Semi conductor-short circuit typeSH650-12/SHINDENGEN14.1 14.9 V

Rectifier:Model/manufactureCapacityWithstand voltage

SH650-12/SHINDENGEN18 A200 V

Battery:Specific gravity 1,320

Electric starter system:Type Constant mesh type

2-15

MAINTENANCE SPECIFICATIONS SPEC

Item Standard Limit

Starter motor:Model/manufacturerI.D. numberOutputArmature coil resistanceBrush overall lengthBrush spring pressureCommutator dia.Mica undercut (depth)

SM-13/MITSUBASM-130.7 kW0.0015 0.0025 Ω at 20C10 mm7.8 10.2 N (780 1.020 gf)28 mm0.7 mm

4 mm

27 mm

Starter relay:Model/manufacturerAmperage ratingCoil winding resistance

MS5F-631/JIDECO100 A4.18 4.62 Ω at 20C

Horn:TypeQuantityModel manufacturerMaximum amperagePerformanceCoil winding resistance

Plane type1 pcsYF-12/NIKKO3.0 A105 120 db/2 m1.15 1.25 Ω at 20C

Flasher relay:TypeModel/manufacturerSelf cancelling deviceHazard flasher deviceFlasher frequencyWattage

Full transistor typeFE246BH/DENSONoYes75 95 cyl/min21 W 2 + 1.4 W

Oil level gauge:Model/manufacture 4JH/SOMIC

Fuel gauge:Model/manufactureSender unit resistance-full

-empty

4YR/NIPPON SEIKI4 10 Ω90 100 Ω

Electric fan:Model/manufacturer 5DM/DENSO

Thermostat switch:Model/manufacture 3LN/NIPPON THERMOSTAT

Circuit breaker:Type Fuse

2-16

MAINTENANCE SPECIFICATIONS SPEC

Item Standard limit

Amperage for individual circuit:MainHeadlightSignalIgnitionFanBack upReserve

30 A20 A20 A20 A10 A5 A30 A20 A10 A5 A

2-17

GENERAL TIGHTENING TORQUE SPECIFICATIONS SPECEB201000

GENERAL TIGHTENING TORQUE SPECIFICATIONSThis chart specifies tightening torques for standard fasteners with a standard ISO thread pitch. Tight-ening torque specifications for special components or assemblies are provided for each chapter of thismanual. To avoid warpage, tighten multi-fastener assemblies in a crisscross pattern and progressivestages until the specified tightening torque is reached. Unless otherwise specified, tightening torquespecifications require clean, dry threads. Components should be at room temperature.

A: Width across flatsB: Thread diameter

A(Nut)

B(Bolt)

General tighteningtorques

(Nut) (Bolt)Nm mkg

10 mm 6 mm 6 0.6

12 mm 8 mm 15 1.5

14 mm 10 mm 30 3.0

17 mm 12 mm 55 5.5

19 mm 14 mm 85 8.5

22 mm 16 mm 130 13.0

2-18

LUBRICATION POINT AND LUBRICATION TYPES SPEC

LUBRICATION POINT AND LUBRICATION TYPESENGINE

Lubrication Point SymbolOil seal lipsBearingCrankshaft journalConnecting rod big end and small endPiston, piston pinConnecting rod boltCamshaft journal, profileValve stem (IN, EX)Valve stem end (IN, EX)Cylinder head tightening nut mounting surfaceValve lifterCamshaft capWater pump seal CoolantWater pump shaftRadiator hose SiliconOil pumpRelief valve O-ringOil cooler O-ringOil filterOil level gaugeStarter moter O-ringStarter idrer gearMain axle 5, 6th pinionDrive axle 1 4th wheel gearPush leverPush rodShift camShift fork guide barShift shaftStarter idrer gear shaft 1Neutral switch O-ringPush rodPush rod 1 O-ringShift pedalShift shaftWater pump O-ringCylinder head cover gasket Yamaha bond No. 1215Shift cam plugBreather plateCrankcase Yamaha bond No. 1215Taper plugBearing plate

2-19

LUBRICATION POINT AND LUBRICATION TYPES SPEC

CHASSIS

Lubrication Point SymbolSteering bearing and bearing race (upper and lower)Pivot shaftRear arm bearingRear arm oil sealRear arm cover oil seal lipsRelay arm bearingRelay arm oil sealRear shock absorber (upper/ lower)Front wheel oil sealSpeed sensor oil sealRear wheel oil sealClutch damper oil sealClutch and rear wheelThrottle cable inner surfaceStarter cable inner surface and lever pivotRear brake pedal shaftShift pedal shaftSide stand sliding surfaceRear foot rest pivot bolt

2-20

10

3

2

4

11

3

65

5

6

7

8

9

8 Radiator outlet hose9 Radiator10 Radiator inlet hose

1 Engine outlet hose2 Engine outlet hose3 Carburetor inlet hose4 Carburetor outlet hose5 Water pump6 Coolant drain bolt7 Water pump outlet hose

COOLING SYSTEM DIAGRAMS SPECEB203000

COOLING SYSTEM DIAGRAMS

2-21

1 Radiator2 Water pump outlet hose3 Oil cooler inlet hose4 Oil cooler outlet hose5 Carburetor outlet hose

COOLING SYSTEM DIAGRAMS SPEC

2-22

12

3

4

7

6 5 4

1 Oil nozzle (main nozzle)2 Oil nozzle (drive axle)3 Projection4 Oil filter5 Relief valve6 Oil strainer7 Oil pump

LUBRICATION DIAGRAMS SPECEB204000

LUBRICATION DIAGRAMS

2-23

1 2

3

4

LUBRICATION DIAGRAMS SPEC

1 Main axle2 Drive axle3 Camshaft4 Oil delivery pipe

2-24

1

2

LUBRICATION DIAGRAMS SPEC

1 Camshaft2 Crankshaft

2-25

12

3

4

5

6

7

8

7

A

B

9 Handlebar switch (left)A Use a plastic clamp to fasten

together the handlebar switchlead (left), clutch cable andstarter cable.

B Pass the brake hose out sideof the speed sensor lead, thenuse a plastic clamp to fastenthem.

1 Throttle cable2 Clutch cable3 Handlebar switch (right)4 Starter cable5 Main switch6 Brake hose7 Speed sensor lead8 Headlight lead

CABLE ROUTING SPECEB205000

CABLE ROUTING

2-26

1 Main switch lead2 Starter cable3 Handlebar switch lead (left)4 Clutch cable5 Rectifier / regulator6 Horn lead7 Box8 Air guide plate9 Starter cable10 Flasher leray

CABLE ROUTING SPEC

11 Battery12 Starting circuit cut-off relay13 Battery positive (+) lead14 Seat lock cable15 AC magneto lead16 Starter motor lead17 Air filter drain hose18 Sidestand switch19 Neutral switch20 Oil level switch

21 Speed sensor lead22 Horn23 Starter relay24 Fuse box25 To front brake switch26 To battery negative (–) lead27 To starter relay28 AC magneto coupler29 Pickup coupler30 Sidestand switch coupler31 Oil level /neutral switch coupler

2-27

D Use a steel holder to fastentogether the AC magneto lead,sidestand lead and oillevel /neutral switch lead.

E Use a plastic clamp to fastenthe horn lead and air guideplate to the frame.

A Use a plastic clamp to fastenthe handlebar switch lead (left),main switch lead, clutch cableand starter cable to the frame.

B Use a plastic band to fastentogether wireharness, startermotor lead, AC magneto lead,sidestand switch lead and oillevel /neutral switch lead, thenhold the clamp to the framebracket.

CABLE ROUTING SPEC

Position the band end to out side ofchassis.C Use a plastic locking tie to

fasten the starter motor lead,AC magneto lead, sidestandswitch lead and oil level /neutralswitch lead to the frame bracket.Cut off the excess end of the tie.

2-28

1 Battery negative (–) lead2 Rear brake switch lead3 Battery4 Reservoir tank hose5 Air filter6 Fuel tank breather hose7 Fuel tank drain hose8 T.P.S. lead9 Handlebar switch lead (right)

CABLE ROUTING SPEC

10 Throttle cable11 Brake hose12 Headlight lead13 Speed sensor lead14 Main switch lead15 Reservoir tank16 Cross tube17 Reservoir tank over flow hose18 Swingarm bracket

A Use a plastic clamp to fastentogether the throttle cables,headlight lead handlebar switch(right) and speed sensor lead.

B Use a plastic locking tie tofasten the handlebar switch(right) and brake hose to theright front fork inner tube.

2-29

E Pass the battery negative (–)lead inside of the reservoirhose.

C Pass the main switch lead underthe throttle cables, headlightlead, handlebar switch lead(right) and speed sensor lead,then insert it right side of the box.

D Pass the reservoir tank overflow hose, fuel tank breatherhose and fuel tank drain hosethrough the cable holder.

CABLE ROUTING SPEC

2-30

21 Starter relay22 Starting circuit cut-off relay23 Flasher relay24 Fuel pump lead coupler25 Ignition coil26 Clutch cable27 Ground lead28 Starter cable29 Fan motor lead30 Rectifier / regulator lead

11 Battery negative (–) lead12 Battery13 Rear brake reservoir tank14 Rear brake switch lead15 Seat lock cable16 Ignitor17 Rear turn signal light lead (right)18 Taillight lead19 Rear turn signal light lead (left)20 Starter motor lead

1 Throttle cable2 Handlebar switch lead (right)3 Headlight lead4 Speed sensor lead5 Carburetor heater hose6 Reservoir tank hose7 Fuel pump8 Fuel filter9 T.P.S lead10 Fuel sender, coupler

CABLE ROUTING SPEC

2-31

turn signal light lead and clampit.

D Pass the reservoir hose left sideof thermo stat housing.

E Do not fasten the high tensioncord #4 with locking tie.

F Use a plastic band to fasten thehigh tension cord #3, #4.

G Pass the carburetor inlet hoseunder the high tension cord #2,#4.

B Pass the rectifier / regulatorlead, fan motor lead, handlebarswitch lead (left), main switchlead, headlight lead, handlebarswitch lead (right) and speedsensor lead through front sideof the box, then connecte eachcoupler in the box.

C Align the connector position ofrear turn signal light leads (leftand right), then bend the rear

31 Starter cable32 Clutch cable33 Handlebar switch lead (left)34 Main switch lead35 To taillight36 Rear fender37 ClampA Pass the wireharness under

the starter relay.

CABLE ROUTING SPEC

SPEC

CHKADJ

3

CHKADJ

CHAPTER 3PERIODIC INSPECTIONS AND ADJUSTMENTS

INTRODUCTION 3-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . PERIODIC MAINTENANCE/LUBRICATION INTERVALS 3-1. . . . . . . . . . . . . . . . . . . . . . FRONT COWLING/SEAT/SIDE COVER/FUEL TANK 3-3. . . . . . . . . . . . . . . . . . . . . . . . . ENGINE 3-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

ADJUSTING THE VALVE CLEARANCE 3-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SYNCHRONIZING THE CARBURETORS 3-11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ADJUSTING THE ENGINE IDLING SPEED 3-13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ADJUSTING THE THROTTLE CABLE FREE PLAY 3-14. . . . . . . . . . . . . . . . . . . . . . . CHECKING THE SPARK PLUGS 3-15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CHECKING THE IGNITION TIMING 3-16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . MEASURING THE COMPRESSION PRESSURE 3-17. . . . . . . . . . . . . . . . . . . . . . . . . CHECKING THE ENGINE OIL LEVEL 3-18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CHANGING THE ENGINE OIL 3-19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . MEASURING THE ENGINE OIL PRESSURE 3-21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . ADJUSTING THE CLUTCH CABLE FREE PLAY 3-22. . . . . . . . . . . . . . . . . . . . . . . . . . CLEANING THE AIR FILTER ELEMENT 3-23. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CHECKING THE CARBURETOR JOINTS ANDINTAKE MANIFOLDS 3-24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CHECKING THE FUEL HOSES AND FUEL FILTER 3-24. . . . . . . . . . . . . . . . . . . . . . . CHECKING THE CRANKCASE BREATHER HOSE 3-25. . . . . . . . . . . . . . . . . . . . . . . CHECKING THE EXHAUST SYSTEM 3-25. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CHECKING THE COOLANT LEVEL 3-26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CHECKING THE COOLING SYSTEM 3-26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CHANGING THE COOLANT 3-27. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

CHASSIS 3-30. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ADJUSTING THE FRONT BRAKE 3-30. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ADJUSTING THE REAR BRAKE 3-30. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CHECKING THE BRAKE FLUID LEVEL 3-31. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ADJUSTING THE REAR BRAKE LIGHT SWITCH 3-32. . . . . . . . . . . . . . . . . . . . . . . . . CHECKING THE BRAKE HOSES 3-33. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . BLEEDING THE HYDRAULIC BRAKE SYSTEM 3-33. . . . . . . . . . . . . . . . . . . . . . . . . . ADJUSTING THE SHIFT PEDAL 3-34. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ADJUSTING THE DRIVE CHAIN SLACK 3-35. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . LUBRICATING THE DRIVE CHAIN 3-36. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CHECKING AND ADJUSTING THE STEERING HEAD 3-36. . . . . . . . . . . . . . . . . . . . CHECKING THE FRONT FORK 3-38. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ADJUSTING THE REAR SHOCK ABSORBER ASSEMBLY 3-38. . . . . . . . . . . . . . . . CHECKING THE TIRES 3-39. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CHECKING THE WHEELS 3-41. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CHECKING AND LUBRICATING THE CABLES 3-42. . . . . . . . . . . . . . . . . . . . . . . . . . . LUBRICATING THE LEVERS AND PEDALS 3-42. . . . . . . . . . . . . . . . . . . . . . . . . . . . . LUBRICATING THE SIDESTAND 3-42. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . LUBRICATING THE CENTER STAND 3-42. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . LUBRICATING THE REAR SUSPENSION 3-42. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

ELECTRICAL SYSTEMS 3-43. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CHECKING AND CHARGING THE BATTERY 3-43. . . . . . . . . . . . . . . . . . . . . . . . . . . . CHECKING THE FUSES 3-48. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . REPLACING THE HEADLIGHT BULBS 3-49. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ADJUSTING THE HEADLIGHT BEAMS 3-50. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

CHKADJ

3-1

INTRODUCTION /PERIODIC MAINTENANCE/LUBRICATION INTERVALS

CHKADJ

EB300000

PERIODIC INSPECTIONS AND ADJUSTMENTSINTRODUCTIONThis chapter includes all information necessary to perform recommended inspections and adjust-ments. If followed, these preventive maintenance procedures will ensure more reliable vehicle opera-tion, a longer service life and reduce the need for costly overhaul work. This information applies to ve-hicles already in service as well as to new vehicles that are being prepared for sale. All servicetechnicians should be familiar with this entire chapter.

EB301000

PERIODIC MAINTENANCE/LUBRICATION INTERVALSEVERY

NO. ITEM CHECKS AND MAINTENANCE JOBSINITIAL

(1,000 km)

6,000 kmor

6 months(whichevercomes first)

12,000 kmor

12 months(whichevercomes first)

1 * Fuel line Check fuel hoses and vacuum hose for cracks or

damage. Replace if necessary.

√ √

2 * Fuel filter Check condition. Replace if necessary. √

3 Spark plugs Check condition. Clean, regap or replace if necessary. √ √ √

4 * Valves Check valve clearance. Adjust if necessary.

Every 42,000 km or 42 months(whichever comes first)

5 Air filter Clean or replace if necessary. √ √

6 Clutch Check operation Adjust or replace cable. √ √ √

7 * Front brake

Cehck operation, fluid level and vehicle for fluidleakage. (See NOTE.)

Correct accordingly. Replace brake pads if necessary.

√ √ √

8 * Rear brake

Check operation, fluid level and vehicle for fluidleakage. (See NOTE.)

Correct accordingly. Replace brake pads if necessary.

√ √ √

9 * Wheels Check balance, runout and for damage. Rebalance or replace if necessary. √ √

10 * Tires

Check tread depth and for damage. Replace if necessary. Check air pressure. Correct if necessary.

√ √

11 * Wheel bearings Check bearing for looseness or damage. Replace if necessary. √ √

12 * Swingarm

Check swingarm pivoting point for play. Correct if necessary. Lubricate with molybdenum disulfide grease every

24,000 km or 24 months (whichever comes first).

√ √

13 Dirve chain

Check chain slack. Adjust if necessary. Make sure that the rear wheel is

properly aligned. Clean and lubricate.

Every 1,000 km and after washing themotorcycle or riding in the rain

14 * Steering bearings

Check bearing play and steering for roughness. Correct accordingly. Lubricate with lithium soap base grease every

24,000 km or 24 months (whichever comes first).

√ √

15 * Chassis fasteners Make sure that all nuts, bolts and screws are properly

tightened. Tighten if necessary.

√ √

16 *Sidestand/centerstand

Check operation. Lubricate and repair if necessary. √ √

3-2

PERIODIC MAINTENANCE/LUBRICATION INTERVALSCHKADJ

NOTE:

EVERY

NO. ITEM CHECKS AND MAINTENANCE JOBSINITIAL

(1,000 km)

6,000 kmor

6 months(whichevercomes first)

12,000 kmor

12 months(whichevercomes first)

17 * Sidestand switch Check operation. Replace if necessary. √ √ √

18 * Front fork Check operation and for oil leakage. Correct accordingly. √ √

19 *Rear shockabsorberassembly

Check operation and shock absorber for oil leakage. Replace shock absorber assembly if necessary. √ √

20 *

Rear suspensionrelay arm andconnectingarm pivotingpoints

Check operation. Lubricate with molybdenum disulfide grease every

24,000 km or 24 months (whichever comes first).√ √

21 * Carburetors Check engine idling speed, synchronization and

starter operation. Adjust if necessary.

√ √ √

22 Engine oil Check oil level and vehicle for oil leakage. Correct if necessary. Change. (Warm engine before draining.)

√ √ √

23Engine oil filtercartridge Replace. √ √

24 * Cooling system

Check coolant level and vehicle for coolant leakage. Correct if necessary. Change coolant every 24,000 km or 24 months

(whichever comes first).

√ √

*Since these items require special tools, data and technical skills, they should be serviced by a Yamaha dealer.

The air filter needs more frequent service if you are riding in unusually wet or dusty areas. Brake fluid replacement1. When disassembling the master cylinder or caliper cylinder, always replace the brake fluid. Check

the brake fluid level regularly and fill as required.2. Replace the oil seals on the inner parts of the master cylinder and caliper cylinder every two years.3. Replace the brake hose every four years or if cracked or damaged.

3-3

Remove the parts in the order listed.

Disconnect the couplers.

For installation, reverse the removalprocedure.

NOTE:

Order Job name/Part name Q’ty Remarks

1234567

Removing the front cowlingView mirror (left /right)Inner panel (left /right)Cowling stay (left /right)Head light leadFront flasher light lead (left /right)Front cowlingHead light assembly

1/11/11/12

2/211

33 Nm (3.3 mkg)

CHKADJ

FRONT COWLING/SEAT/SIDE COVER/FUEL TANK

FRONT COWLING/SEAT/SIDE COVER/FUEL TANKFRONT COWLING

3-4

Order Job name/Part name Q’ty Remarks

123456789

Removing the seat, side coverand fuel tankSeatFuel tankFuel sender leadFuel tank breaser hoseFuel tank drain hoseFuel hoseSide cover (left /right)Grab barTail cover

111111

1/111

Remove the parts in the order listed.

Disconnect the couplers.

For installation, reverse the removalprocedure.

NOTE:

10 Nm (1.0 mkg)

10 Nm (1.0 mkg)

4 Nm (0.4 mkg)

19 Nm (1.9 mkg)

FRONT COWLING/SEAT/SIDE COVER/FUEL TANK

CHKADJ

SEAT, SIDE COVER AND FUEL TANK

3-5

ADJUSTING THE VALVE CLEARANCECHKADJ

NOTE:

EB303001

ENGINEADJUSTING THE VALVE CLEARANCEThe following procedure applies to all of thevalves.

Valve clearance adjustment should bemade on a cold engine, at room tempera-ture.

When the valve clearance is to be mea-sured or adjusted, the piston must be at topdead center (TDC) on the compressionstroke.

1. Remove: front cowling seat fuel tank

(Refer to “FRONT COWLING SEAT, SIDECOVER AND FUEL TANK” in chapter 3)

2. Drain the coolant(Refer to “COOLANT REPLACEMENT” inchapter 3)

3. Remove: radiator

(Refer to “RADIATOR” in chapter 5)

4. Remove: spark plug cap spark plug magneto cover

5. Measure: valve clearance

Out of specification Adjust.

Valve clearance (cold)Intake valve

0.11 0.20 mmExhaust valve

0.21 0.30 mm

3-6

ADJUSTING THE VALVE CLEARANCECHKADJ

b

a

1

NOTE:

NOTE:

a. Turn the crankshaft counterclockwise.b. When piston #1 is at TDC on the com-

pression stroke, align the TDC mark a onthe generator rotor with the mark b onthe crankcase.

TDC on the compression stroke can befound when the camshaft lobes are turnedaway from each other.

c. Measure the valve clearance with a thick-ness gauge 1 .

If the valve clearance is incorrect, recordthe measured reading.

Measure the valve clearance in the follow-ing sequence.

Valve clearance measuring sequenceCylinder #1 #2 #4 #3

A Frontd. For each cylinder, starting with cylinder

#1 at TDC, turn the crankshaft counter-clockwise as specified in the followingtable.

B Degrees that the crankshaft is turnedcounterclockwise.

C CylinderD Combustion cycle

#2 Cylinder 180

#4 Cylinder 360

#3 Cylinder 540

6. Remove: carburetor

Refer to “CARBURETION” in chapter 6.

3-7

ADJUSTING THE VALVE CLEARANCECHKADJ

NOTE:

NOTE:

7. Remove: timing chain tensioner bolt 1 timing chain tensioner assembly 2

8. Remove: timing chain guide 1 timing chain guide (upper) 2 camshaft cap 3

9. Remove: camshaft 1

Refer to “DISASSEMBLING THE ENGINE– CAMSHAFT AND CYLINDER HEAD” inchapter 4.

When removing the timing chain and cam-shafts, fasten a wire to the timing chain toretrieve it if it falls into the crankcase.

10. Adjust: valve clearance

a. Remove the valve lifter 1 and the valvepad 2 .

Cover the timing chain opening with a ragto prevent the valve pad from falling intothe crankcase.

Make a note of the position of each valvelifter 1 and valve pad 2 so that they canbe installed in the correct place.

b. Select the proper valve pad from the fol-lowing table.

Valve padthickness range

Available valvepads

Nos.120 240

120 2.40 mm

25 thicknessin 0.05 mmincrements

3-8

ADJUSTING THE VALVE CLEARANCECHKADJ

NOTE:

NOTE:

The thickness a of each valve pad ismarked in hundredths of millimeters on theside that touches the valve lifter.

Since valve pads of various sizes are origi-nally installed, the valve pad number mustbe rounded in order to reach the closestequivalent to the original.

c. Round off the original valve pad numberaccording to the following table.

Last digit Rounded valve

0 or 2 0

5 5

8 10

EXAMPLE:Original valve pad number = 148 (thickness= 1.48 mm)Rounded value = 150d. Locate the rounded number of the origi-

nal valve pad and the measured valveclearance in the valve pad selectiontable.The point where the column and row in-tersect is the new valve pad number.

The new valve pad number is only anapproximation. The valve clearance must bemeasured again and the above steps shouldbe repeated if the measurement is still incor-rect.

3-9

ADJUSTING THE VALVE CLEARANCECHKADJ

Measuredclearance

exa

INSTALLED PAD NUMBER

EXAMPLE:VALVE CLEARANCE: 0.11 0.20 mm

Installed is 150Measured clearance is 0.25 mmReplace 150 pad with 160 pad

120 125 130 135 140 145 150 155 160 165 170 175 180 185 190 195 200 205 210 215 220 225 230 235 240

0.00 0.02 120 125 130 135 140 145 150 155 160 165 170 175 180 185 190 195 200 205 210 215 220 2250.03 0.07 120 125 130 135 140 145 150 155 160 165 170 175 180 185 190 195 200 205 210 215 220 225 2300.08 0.10 120 125 130 135 140 145 150 155 160 165 170 175 180 185 190 195 200 205 210 215 220 225 230 2350.11 0.20 Specification0.21 0.22 125 130 135 140 145 150 155 160 165 170 175 180 185 190 195 200 205 210 215 220 225 230 235 2400.23 0.27 130 135 140 145 150 155 160 165 170 175 180 185 190 195 200 205 210 215 220 225 230 235 2400.28 0.32 135 140 145 150 155 160 165 170 175 180 185 190 195 200 205 210 215 220 225 230 235 2400.33 0.37 140 145 150 155 160 165 170 175 180 185 190 195 200 205 210 215 220 225 230 235 2400.38 0.42 145 150 155 160 165 170 175 180 185 190 195 200 205 210 215 220 225 230 235 2400.43 0.47 150 155 160 165 170 175 180 185 190 195 200 205 210 215 220 225 230 235 2400.48 0.52 155 160 165 170 175 180 185 190 195 200 205 210 215 220 225 230 235 2400.53 0.57 160 165 170 175 180 185 190 195 200 205 210 215 220 225 230 235 2400.58 0.62 165 170 175 180 185 190 195 200 205 210 215 220 225 230 235 2400.63 0.67 170 175 180 185 190 195 200 205 210 215 220 225 230 235 2400.68 0.72 175 180 185 190 195 200 205 210 215 220 225 230 235 2400.73 0.77 180 185 190 195 200 205 210 215 220 225 230 235 2400.78 0.82 185 190 195 200 205 210 215 220 225 230 235 2400.83 0.87 190 195 200 205 210 215 220 225 230 235 2400.88 0.92 195 200 205 210 215 220 225 230 235 2400.93 0.97 200 205 210 215 220 225 230 235 2400.98 1.02 205 210 215 220 225 230 235 2401.03 1.07 210 215 220 225 230 235 2401.08 1.12 215 220 225 230 235 2401.13 1.17 220 225 230 235 2401.18 1.22 225 230 235 2401.23 1.27 230 235 2401.28 1.32 235 2401.33 1.37 240

Measuredclearance

exa

EXAMPLE:VALVE CLEARANCE: 0.21 0.30 mm

Installed is 175Measured clearance is 0.35 mmReplace 175 pad with 185 pad

INSTALLED PAD NUMBER120 125 130 135 140 145 150 155 160 165 170 175 180 185 190 195 200 205 210 215 220 225 230 235 240

0.00 0.02 120 125 130 135 140 145 150 155 160 165 170 175 180 185 190 195 200 205 210 2150.03 0.07 120 125 130 135 140 145 150 155 160 165 170 175 180 185 190 195 200 205 210 215 2200.08 0.10 120 125 130 135 140 145 150 155 160 165 170 175 180 185 190 195 200 205 210 215 220 2250.13 0.17 120 125 130 135 140 145 150 155 160 165 170 175 180 185 190 195 200 205 210 215 220 225 2300.18 0.20 120 125 130 135 140 145 150 155 160 165 170 175 180 185 190 195 200 205 210 215 220 225 230 2350.21 0.30 Specification0.31 0.32 125 130 135 140 145 150 155 160 165 170 175 180 185 190 195 200 205 210 215 220 225 230 235 2400.33 0.37 130 135 140 145 150 155 160 165 170 175 180 185 190 195 200 205 210 215 220 225 230 235 2400.38 0.42 135 140 145 150 155 160 165 170 175 180 185 190 195 200 205 210 215 220 225 230 235 2400.43 0.47 140 145 150 155 160 165 170 175 180 185 190 195 200 205 210 215 220 225 230 235 2400.48 0.52 145 150 155 160 165 170 175 180 185 190 195 200 205 210 215 220 225 230 235 2400.53 0.57 150 155 160 165 170 175 180 185 190 195 200 205 210 215 220 225 230 235 2400.58 0.62 155 160 165 170 175 180 185 190 195 200 205 210 215 220 225 230 235 2400.63 0.67 160 165 170 175 180 185 190 195 200 205 210 215 220 225 230 235 2400.68 0.72 165 170 175 180 185 190 195 200 205 210 215 220 225 230 235 2400.73 0.77 170 175 180 185 190 195 200 205 210 215 220 225 230 235 2400.78 0.82 175 180 185 190 195 200 205 210 215 220 225 230 235 2400.83 0.87 180 185 190 195 200 205 210 215 220 225 230 235 2400.88 0.92 185 190 195 200 205 210 215 220 225 230 235 2400.93 0.97 190 195 200 205 210 215 220 225 230 235 2400.98 1.02 195 200 205 210 215 220 225 230 235 2401.30 1.07 200 205 210 215 220 225 230 235 2401.08 1.12 205 210 215 220 225 230 235 2401.13 1.17 210 215 220 225 230 235 2401.18 1.22 215 220 225 230 235 2401.23 1.27 220 225 230 235 2401.28 1.32 225 230 235 2401.33 1.37 230 235 2401.38 1.42 235 2401.43 1.47 240

VALVE PAD SELECTION TABLEINTAKE

EXHAUST

3-10

ADJUSTING THE VALVE CLEARANCECHKADJ

a

NOTE:

NOTE:

CAUTION:

NOTE:

e. Install the new valve pad 1 and the valvelifter 2 .

Apply molybdenum disulfide grease to thevalve pad.

Lubricate the valve lifter with molybdenumdisulfide oil.

The valve lifter must turn smoothly whenrotated by hand.

Install the valve lifter and the valve pad inthe correct place.

f. Install the exhaust and intake camshafts,timing chain and camshaft caps.

Camshaft cap bolt10 Nm (1.0 mkg)

Refer to “CAMSHAFT” in chapter 4. Lubricate the camshaft bearings, cam-

shaft lobes and camshaft journals. First, install the exhaust camshaft. Align the camshaft marks a with the cam-

shaft cap marks. Rotate the crankshaft counterclockwise

several turns to seat the parts.

The camshaft caps must be tightenedevenly or damage to the cylinder head,camshaft caps and camshafts will result.

g. Measure the valve clearance again.h. If the valve clearance is still out of specifi-

cation, repeat all of the valve clearanceadjustment steps until the specified clear-ance is obtained.

11. Install: all removed parts

For installation, reverse the removal proce-dure. Note the following points.

12. Install: timing chain guide (exhaust side) timing chain guide (upper) timing chain tensioner

Refer to “CAMSHAFT” in CHAPTER 4.

13. Install: AC magneto cover

Bolt (AC magneto cover):12 Nm (1.2 mkg)

3-11

ADJUSTING THE VALVE CLEARANCE/SYNCHRONIZING THE CARBURETORS

CHKADJ

NOTE:

NOTE:

14. Install: cylinder head cover spark plugs

Bolt (cylinder head cover):10 Nm (1.0 mkg)

Spark plug:13 Nm (1.3 mkg)

EB303010

SYNCHRONIZING THE CARBURETORS

Prior to synchronizing the carburetors, thevalve clearance and the engine idling speedshould be properly adjusted and the ignitiontiming should be checked.

1. Stand the motorcycle on a level surface.

Place the motorcycle on a suitable stand.

2. Remove: cap

3. Install: vacuum gauge 1 engine tachometer 2

(to the spark plug lead of cyl. #1)

Vacuum gauge90890-03094

Engine tachometer90890-03113

4. Start the engine and let it warm up for sever-al minutes.

5. Check: engine idling speed

Out of specification Adjust.Refer to “ADJUSTING THE ENGINE ID-LING SPEED”.

Engine idling speed1,150 1,250 r/min

3-12

SYNCHRONIZING THE CARBURETORSCHKADJ

NOTE:

NOTE:

6. Adjust: carburetor synchronization

a. Synchronize carburetor #1 to carburetor#2 by turning the synchronizing screw 1in either direction until both gauges readthe same.

After each step, rev the engine two or threetimes, each time for less than a second, andcheck the synchronization again.

b. Synchronize carburetor #4 to carburetor#3 by turning the synchronizing screw 2in either direction until both gauges readthe same.

c. Synchronize carburetor #2 to carburetor#3 by turning the synchronizing screw 3in either direction until both gauges readthe same.

Vacuum pressure at engineidling speed

30.7 33.3 kPa(230 250 mm Hg)

The difference in vacuum pressure betweentwo carburetors should not exceed 1.33 kPa(10 mm Hg, 0.4 in Hg).

7. Check: engine idling speed

Out of specification Adjust.

8. Stop the engine and remove the measuringequipment.

9. Adjust: throttle cable free play

Refer to “ADJUSTING THE THROTTLECABLE FREE PLAY”.

Throttle cable free play (atthe flange of the throttle grip)

3 5 mm

10. Install: cap

3-13

ADJUSTING THE ENGINE IDLING SPEEDCHKADJ

1

NOTE:

a

b

EB303020

ADJUSTING THE ENGINE IDLING SPEED

Prior to adjusting the engine idling speed,the carburetor synchronization should beadjusted properly, the air filter should beclean, and the engine should have adequatecompression.

1. Start the engine and let it warm up for sever-al minutes.

2. Install: engine tachometer

(to the spark plug lead of cyl. #1)

Engine tachometer90890-03113

3. Check: engine idling speed

Out of specification Adjust.

Engine idling speed1,150 1,250 r/min

4. Adjust: engine idling speed

a. Turn the pilot screw 1 in or out until it islightly seated.

b. Turn the pilot screw out by the specifiednumber of turns.

Carburetor angle driver:90890-03158

Pilot screw: 2 turns out

c. Turn the throttle stop screw 2 a or b un-til the specified idling speed is obtained.

Direction Idling speed isincreased.

Direction Idling sped isdecreased.

5. Adjust: throttle cable free play

Refer to “ADJUSTING THE THROTTLECABLE FREE PLAY”.

Throttle cable free play (at theflange of the throttle grip)

3 5 mm

3-14

ab

ab

ADJUSTING THE THROTTLE CABLE FREE PLAYCHKADJ

NOTE:

NOTE:

a

b

NOTE:

a

b

EB303032

ADJUSTING THE THROTTLE CABLE FREEPLAY

Prior to adjusting the throttle cable free play,the engine idling speed and carburetor syn-chronization should be adjusted properly.

1. Check: throttle cable free play a

Out of specification Adjust.

Throttle cable free play (at theflange of the throttle grip)

3 5 mm

2. Remove: bracket ignition coil fuel pump

3. Adjust: throttle cable free play

Carburetor side

When the motorcycle is accelerating,throttle cable #1 1 is pulled and throttlecable #2 2 is pushed.

a. Loosen the locknut 3 on throttle cable#2.

b. Turn the adjuster 4 a or b to take upany slack on throttle cable #2.

c. Loosen the locknut 5 on throttle cable#1.

d. Turn the adjuster 6 a or b until the spe-cified free play is obtained.

Direction Throttle cable free playis increased.

Direction Throttle cable free playis decreased.

e. Tighten the locknuts.

If the specified throttle cable free play cannotbe obtained on the carburetor side of thecable, use the adjusting nut on the handle-bar side.

Handlebar sidea. Loosen the locknut 1 .b. Turn the adjusting nut 2 in direction a or

b until the specified throttle cable freeplay is obtained.

Direction Throttle cable free playis increased.

Direction Throttle cable free playis decreased.

c. Tighten the locknut.

3-15

ADJUSTING THE THROTTLE CABLE FREE PLAY/CHECKING THE SPARK PLUGS

CHKADJ

CAUTION:

NOTE:

After adjusting the throttle cable freeplay, turn the handlebar to the right andto the left to ensure that this does notcause the engine idling speed to change.

4. Install: fuel pump ignition coil bracket

EB303040

CHECKING THE SPARK PLUGSThe following procedure applies to all of thespark plugs.

1. Disconnect: spark plug cap

2. Remove: spark plug

Before removing the spark plugs, blowaway any dirt accumulated in the sparkplug wells with compressed air to pre-vent it from falling into the cylinders.

3. Check: spark plug type

Incorrect Change.

Spark plug type (manufacturer)CR8E (NGK)U24ESR-N (DENSO)

4. Check: electrode 1

Damage/wear Replace the spark plug. insulator 2

Abnormal color Replace the spark plug.Normal color is a medium-to-light tan color.

5. Clean: spark plug

(with a spark plug cleaner or wire brush)

6. Measure: spark plug gap 3

(with a specification Regap.

Spark plug gap0.7 0.8 mm

7. Install: spark plug

Spark plug13 Nm (1.3 mkg)

Before installing the spark plug, clean thespark plug and gasket surface.

3-16

CHECKING THE SPARK PLUGS/CHECKING THE IGNITION TIMING

CHKADJ

NOTE:

NOTE:

8. Connect: spark plug cap

EB303053

CHECKING THE IGNITION TIMING

Prior to checking the ignition timing, checkthe wiring connections of the entire ignitionsystem. Make sure that all connections aretight and free of corrosion.

1. Remove: timing plug 1

2. Install: timing light 1 engine tachometer 2

(to the spark plug lead of cyl. #1)

Timing light90890-03141

Engine tachometer90890-03113

3. Check: ignition timing

a. Start the engine, warm it up for severalminutes, and then let it run at the speci-fied engine idling speed.

Engine idling speed1,150 1,250 r/min

b. Check that the stationary pointer a iswithin the firing range b on the generatorrotor.Incorrect firing range Check the igni-tion system.

The ignition timing is not adjustable.

4. Remove: engine tachometer timing light

5. Install: timing plug

3-17

MEASURING THE COMPRESSION PRESSURECHKADJ

NOTE:

CAUTION:

EB303060

MEASURING THE COMPRESSIONPRESSUREThe following procedure applies to all of the cyl-inders.

Insufficient compression pressure will resultin a loss of performance.

1. Check: valve clearance

Out of specification Adjust.Refer to “ADJUSTING THE VALVECLEARANCE”.

2. Start the engine, warm it up for several min-utes, and then turn it off.

3. Disconnect: spark plug cap

4. Remove: spark plug

Before removing the spark plugs, usecompressed air to blow away any dirt ac-cumulated in the spark plug wells to pre-vent it from falling into the cylinders.

5. Install: compression gauge 1

Compression gauge90890-03081

6. Measure: compression pressure

Above the maximum pressure Inspectthe cylinder head, valve surfaces, and pis-ton crown for carbon deposits.Below the minimum pressure Squirt afew measure again.

Refer to the following table.

Compression pressure(with oil applied into the cylinder)

Reading Diagnosis

Higher thanwithout oil

Piston wear ordamage Repair.

Same aswithout oil

Piston ring(-s),valves cylinderhead gasket orpiston possibly

defective Repair.

3-18

MEASURING THE COMPRESSION PRESSURE/CHECKING THE ENGINE OIL LEVEL

CHKADJ

NOTE:

NOTE:

Compression pressure(at sea level)

Standard1,500 kPa (15.0 kg/cm 2)

Minimum1,200 kPa (12.0 kg/cm 2)

a. Turn the main switch to “ON”.b. With the throttle wide open, crank the en-

gine until the reading on the compressiongauge stabilizes.

To prevent sparking, ground all sparkplug leads before cranking the engine.

The difference in compression pressurebetween cylinders should not exceed 100kPa (1 kg/cm2, 1 bar).

7. Install: spark plug

Spark plug13 Nm (1.3 mkg)

8. Connect: spark plug cap

EB303070

CHECKING THE ENGINE OIL LEVEL1. Stand the motorcycle on a level surface.

Place the motorcycle on a suitable stand. Make sure that the motorcycle is upright.

2. Let the engine idle for a few minutes.

3. Check: engine oil level

The engine oil level should be between theminimum level marks a and maximumlevel marks b .Below the minimum level mark Add therecommended engine oil to the proper lev-el.

3-19

TEMP

SAE 10W-30

SAE 10W-30

SAE 10W-30

2

CHECKING THE ENGINE OIL LEVEL/CHANGING THE ENGINE OIL

CHKADJ

CAUTION:

NOTE:

Recommended engine oilRefer to the chart for theengine oil grade which is bestsuited for certain atmospherictemperatures.API standard

SE or higher gradeACEA standard G4 or G5

Engine oil also lubricates the clutch andthe wrong oil types or additives couldcause clutch slippage. Therefore, do notadd any chemical additives or useengine oils with a grade of CD a orhigher and do not use oils labeled“ENERGY CONSERVING II” b or higher.

Do not allow foreign materials to enterthe carankcase.

4. Start the engine, warm it up for several min-utes, and then turn it off.

5. Check the engine oil level again.

Before checking the engine oil level, wait afew minutes until the oil has settled.

EB303081

CHANGING THE ENGINE OIL1. Start the engien, warm it up for several min-

utes, and then turn it off.

2. Place a container under the engine oil drainbolt.

3. Remove: engine oil filler cap 1 engine oil drain bolt 2

(along with the gasket)

4. Drain: engine oil

(completely from the crankcase)

5. If the oil filter cartridge is also to be replaced,perform the following procedure.

3-20

3

1

CHANGING THE ENGINE OILCHKADJ

CAUTION:

43 Nm (4.3 mkg)

a. Remove the oil filter cartridge 1 with anoil filter wrench 2 .

Oil filter wrench90890-01469

b. Apply a thin coat of engine oil onto the O-ring 3 of the new oil filter cartridge.

Make sure that the O-ring 3 is positionedcorrectly in the groove of the oil filter car-tridge.

c. Tighten the new oil filter cartridge to spec-ification with an oil filter wrench.

Oil filter cartridge17 Nm (1.7mkg)

6. Check: engine oil drain bolt gasket

Damage Replace.

7. Install: engine oil drain bolt 1

8. Fill: crankcase

(with the specified amount of the recom-mended engine oil)

QuantityTotal amount

3.5 LWithout oil filter cartridgereplacement

2.5 LWith oil filter cartridgereplacement

2.7 L

9. Install: engine oil filler cap

10. Start the engine, warm it up for several min-utes, and then turn it off.

11. Check: engine

(for engine oil leaks)

12. Check: engine oil level

Refer to “CHECKING THE ENGINE OILLEVEL”.

3-21

2

MEASURING THE ENGINE OIL PRESSURECHKADJ

CAUTION:

EB303090

MEASURING THE ENGINE OIL PRESSURE1. Check: engine oil level

Below the minimum level mark Add therecommended engine oil to the proper lev-el.

2. Start the engine, warm it up for several min-utes, and then turn it off.

When the engine is cold, the engine oilwill have a higher viscosity, causing theengine oil pressure to increase. There-fore, be sure to measure the engine oilpressure after warming up the engine.

3. Remove: oil gallery bolt 1

The engine, muffler and engine oil areextremely hot.

4. Install: oil pressure gauge 1 adapter 2

Oil pressure gauge90890-03153

Adapter90890-03139

5. Measure: engine oil pressure

(at the following conditions)

Engine oil pressure450 kPa (4.5 kg/cm 2)

Engine speedApprox. 10,000 r/min

Engine oil temperature115C

Out of specification Adjust.

Engine oil pressure Possible cause

Below specification

Faulty oil pumpClogged oil filterLeaking oil passageBroken or damagedoil seal

Above specification

Leaking oil passageFaulty oil filterOil viscosity toohigh

3-22

MEASURING THE ENGINE OIL PRESSURE/ADJUSTING THE CLUTCH CABLE FREE PLAY

CHKADJ

c

db

a

Engine sideHandlebar side

8 Nm (0.8 mkg)

a

b

NOTE:

c

d

6. Install: oil gallery bolt

EB303100

ADJUSTING THE CLUTCH CABLE FREEPLAY

1. Check: clutch cable free play a

Out of specification Adjust.

Clutch cable free play (at theend of the clutch lever)

10 15 mm

2. Adjust: clutch cable free play

Handlebar sidea. Loosen the locknut 1 .b. Turn the adjusting bolt 2 in direction a or

b until the specified clutch cable freeplay is obtained.

Direction Clutch cable freeplay is increased.

Direction Clutch cable freeplay is decreased.

c. Tighten the locknut.

If the specified clutch cable free play cannotbe obtained on the handlebar side of thecable, use the adjusting nut on the engineside.

Engine sidea. Loosen the locknuts 3 .b. Turn the adjusting bolt 4 in direction c or

d until the specified clutch cable freeplay is obtained.

Direction Clutch cable freeplay is increased.

Direction Clutch cable freeplay is decreased.

c. Tighten the locknuts.

3-23

CLEANING THE AIR FILTER ELEMENTCHKADJ

CAUTION:

EB303130

CLEANING THE AIR FILTER ELEMENT1. Remove: Seat Fuel tank Cover 1

2. Remove: air filter case cover 1 air filter element 2

3. Clean: air filter element

Apply compressed air to the outer surfaceof the air filter element.

4. Check: air filter element

Damage Replace.

5. Install: air filter element air filter case cover

Never operate the engine without the airfilter element installed. Unfiltered air willcause rapid wear of engine parts and maydamage the engine. Operating the enginewithout the air filter element will also af-fect the carburetor turning, leading topoor engine performance and possibleoverheating.

3-24

CLEANING THE AIR FILTER ELEMENT/CHECKING THE CARBURETOR JOINTS AND IN TAKE MANIFOLDS/

CHECKING THE FUEL HOSES AND FUEL FILTER

CHKADJ

NOTE:

NOTE:

When installing the air filter element into theair filter case cover, be sure their sealing sur-faces are aligned to prevent any air leaks.

6. Install: cover fuel tank seat

EB303171

CHECKING THE CARBURETOR JOINTSAND INTAKE MANIFOLDSThe following procedure applies to all of the car-buretor joints and intake manifolds.

1. Remove: seat fuel tank

2. Check: carburetor joint 1 intake manifold 2

Cracks/damage Replace.Refer to “CARBURETOR” in chapter 6.

3. Install: fuel tank seat

EB303181

CHECKING THE FUEL HOSES AND FUELFILTERThe following procedure applies to all of the fuelhoses.

1. Remove: seat fuel tank

2. Check: fuel hose 1

Cracks/damage Replace. fuel filter 2

Damage/dirt Replace.

Drain and flush the fuel tank if abrasivedamage to any components of the fuel lineis evident.

3. Install: fuel tank seat

3-25

CHECKING THE CRANKCASE BREATHER HOSE/CHECKING THE EXHAUST SYSTEM

CHKADJ

2

7

5

6

4

44

3

1 1 1

CAUTION:

EB303190

CHECKING THE CRANKCASE BREATHERHOSE

1. Remove: seat fuel tank carburetor

2. Check: crankcase breather hose 1

Cracks/damage Replace.Loose connection Connect properly.

Make sure that the crankcase breatherhose is routed correctly.

3. Install: carburetor fuel tank seat

EB303200

CHECKING THE EXHAUST SYSTEMThe following procedure applies to all of the ex-haust pipes and gaskets.

1. Check: exhaust pipe 1 muffler 2

Cracks/damage Replace. gasket 3

Exhaust gas leaks Replace.

2. Check: tightening torque

Exhaust pipe ring nut 410 Nm (1.0 mkg)

Exhaust pipe and footrestbracket 5

20 Nm (2.0 mkg)Exhaust pipe and muffler 6

20 Nm (2.0 mkg)Muffler and footrest bracket(rear) 7

30 Nm (3.0 mkg)

3-26

ba

7 6

CHECKING THE COOLANT LEVEL/CHECKING THE COOLING SYSTEM

CHKADJ

CAUTION:

NOTE:

EB303220

CHECKING THE COOLANT LEVEL1. Stand the motorcycle on a level surface. Place the motorcycle on a suitable stand. Make sure that the motorcycle is upright.

2. Remove: side cover (right)

3. Check: coolant level

The coolant level should be between themaximum level mark a and minimum lev-el marks b .Below the minimum level mark Add therecommended coolant to the proper level.

Adding water instead of coolant lowersthe antifreeze content of the coolant. Ifwater is used instead of coolant, checkand correct the antifreeze concentra-tion of the coolant.

Use only distilled water. Soft water maybe used if distilled water is not avail-able.

4. Start the engine, warm it up for several min-utes, and then turn it off.

5. Check: coolant level

Before checking the coolant level, wait a fewminutes until it settles.

6. Install: side cover (right)

EB303230

CHECKING THE COOLING SYSTEM1. Remove: seat fuel tank

2. Check: radiator 1 radiator inlet hose 2 radiator outlet hose 3 water jacket outlet joint 4 water jacket inlet joint 5 oil cooler inlet hose 6 oil cooler outlet hose 7

Cracks/damage Replace.Refer to “COOLING SYSTEM” in chapter5.

3. Install: fuel tank seat

3-27

CHANGING THE COOLANTCHKADJ

10 Nm (1.0 mkg)

EB303240

CHANGING THE COOLANT1. Remove: seat fuel tank

2. Disconnect: coolant reservoir hose 1

3. Drain: coolant

(from the coolant reservoir)4. Remove: radiator cap

A hot radiator is under pressure. There-fore, do not remove the radiator capwhen the engine is hot. Scalding hot fluidand steam may be blown out, whichcould cause serious injury. When the en-gine has cooled, open the radiator cap asfollows:Place a thick rag or a towel over the radia-tor cap and slowly rotate the radiator capcounterclockwise towrd the detent to al-low any residual pressure to escape.When the hissing sound has stopped,press down on the radiator cap, whilestill pressing down turn it counterclock-wise, and then remove it.

The following procedure applies to all of thecoolant drain bolts and copper washers.

5. Remove: coolant drain bolt (water pump) 1

(along with the copper washer)

6. Drain: coolant

(from the engine and radiator)

7. Check: copper washer 1 (coolant drain bolt water

pump)Damage Replace.

8. Install: coolant drain bolt (water pump)

3-28

CHANGING THE COOLANTCHKADJ

CAUTION:

9. Coonect: coolant reservoir hose

10. Fill: cooling system

(with the specified amount of the recom-mended coolant)

Recommended antifreezeHigh-quality ethylene glycol anti-freeze containing corrosion inhibi-tors for aluminum engines

Mix ratio50% antifreeze/50 % water

QuantityTotal amount

1.95 LCoolant reservoir capacity

0.61 LFrom minimum to maximumlevel mark

0.22 L

Handling notes for coolantCoolant is potentially harmful and should behandled with special care.

If coolant splashes in your eyes, thor-oughly wash them with water and con-sult a doctor.

If coolant splashes on your clothes,quickly wash it away with water andthen with soap and water.

If coolant is swallowed, induce vomit-ing and get immediate medical atten-tion.

Adding water instead of coolant lowersthe antifreeze content of the coolant. Ifwater is used instead of coolant, check,and if necessary, correct the antifreezeconcentration of the coolant.

Use only distilled water. Soft water maybe used if distilled water is not avail-able.

If coolant comes into contact withpainted surfaces, immediately washthem with water.

Do not mix different types of antifreeze.

11. Install: radiator cap

3-29

CHANGING THE COOLANTCHKADJ

NOTE:

12. Fill: coolant reservoir

(with the recommended coolant to themaximum level mark a )

13. Install: coolant reservoir cap

14. Start the engine, warm it up for several min-utes, and then turn if off.

15. Check: coolant level

Refer to “CHECKING THE COOLANTLEVEL”.

Before checking the coolant level, wait a fewminutes until it settles.

16. Install: fuel tank seat

3-30

ADJUSTING THE FRONT BRAKE/ADJUSTING THE REAR BRAKE

CHKADJ

c

b

a

NOTE:

a

a

a

b

EB304001

CHASSISADJUSTING THE FRONT BRAKE

1. Adjust: brake lever position

(distance a from the throttle grip to thebrake lever)

a. While pushing the brake lever forward,turn the adjusting dial 1 until the brakelever is in the desired position.

Be sure to align the setting on the adjustingdial with the arrow mark 2

Position #1 Distance is thelargest.

Position #4 Distance is thesmallest.

After adjusting the brake lever position,make sure that the pin on the brake leverholder is firmly inserted in the hole in theadjusting dial.

EB304010

ADJUSTING THE REAR BRAKE1. Check: brake pedal position

(distance a from the top of the rider foot-rest to the top of the brake pedal)Out of specification Adjust.

Brake pedal position (belowthe top of the rider footrest)

36.6 mm

2. Adjust: brake pedal position

a. Loosen the locknut 1 .b. Turn the adjusting bolt 2 in direction a or

b until the specified brake pedal positionis obtained.

Direction Brake pedal is raised.

Direction Brake pedal is lowered.

3-31

ADJUSTING THE REAR BRAKE/CHECKING THE BRAKE FLUID LEVEL

CHKADJ

A B

CAUTION:

NOTE:

After adjusting the brake pedal position,check that the end of the adjusting bolt 2is visible through the hole c .

c. Tighten the locknut 1 to specification.

A soft or spongy feeling in the brake ped-al can indicate the presence of air in thebrake system. Before the vehicle is oper-ated, the air must be removed by bleed-ing the brake system. Air in the brakesystem will considerably reduce brakingperformance and could result in loss ofcontrol and possibly an accident. There-fore, inspect and, if necessary, bleed thebrake system.

After adjusting the brake pedal position,make sure that there is no brake drag.

3. Adjust: rear brake light switch

Refer to “ADJUSTING THE REAR BRAKELIGHT SWITCH”.

EB304020

CHECKING THE BRAKE FLUID LEVEL1. Stand the motorcycle on a level surface.

Place the motorcycle on a suitable stand. Make sure that the motorcycle is upright.

2. Check: brake fluid level

Below the minimum level mark a Addthe recommended brake fluid to the properlevel.

Recommended brake fluidDOT4

A Front brakeB Rear brake

3-32

a b

CHECKING THE BRAKE FLUID LEVEL /ADJUSTING THE REAR BRAKE LIGHT SWITCH

CHKADJ

CAUTION:

NOTE:

NOTE:

a

b

Use only the designated brake fluid.Other brake fluids may cause the rub-ber seals to deteriorate, causing leak-age and poor brake performance.

Refill with the same type of brake fluidthat is already in the system. Mixingbrake fluids may result in a harmfulchemical reaction, leading to poorbrake performance.

When refilling, be careful that waterdoes not enter the reservoir. Water willsignificantly lower the boiling point ofthe brake fluid and could cause vaporlock.

Brake fluid may damage painted sur-faces and plastic parts. Therefore, al-ways clean up any spilt brake fluid im-mediately.

In order to ensure a correct reading of thebrake fluid level, make sure that the top ofthe reservoir is horizontal.

EB304050

ADJUSTING THE REAR BRAKE LIGHTSWITCH

The rear brake light switch is operated bymovement of the brake pedal.The rear brake light switch is properly ad-justed when the brake light comes on justbefore the braking effect starts.

1. Check: rear brake light operation timing

Incorrect Adjust.

2. Adjust: rear brake light operation timing

a. Hold the main body 1 of the rear brakelight switch so that it does not rotate andturn the adjusting nut 2 in direction a orb until the rear brake light comes on atthe proper time.

Direction Brake light comeson sooner.

Direction Brake light comeson later.

3-33

CHECKING THE BRAKE HOSES/BLEEDING THE HYDRAULIC BRAKE SYSTEM

CHKADJ

NOTE:

EB304062

CHECKING THE BRAKE HOSESThe following procedure applies to all of thebrake hoses and clamps.

1. Check: brake hose

Cracks/damage/wear Replace.

2. Check: brake hose clamp

Loose connection Tighten.

3. Hold the motorcycle upright and apply thebrake.

4. Check: brake hose

Activate the brake several times.Brake fluid leakage Replace damagedhose.Refer to “FRONT AND REAR BRAKES” inchapter 7.

EB304071

BLEEDING THE HYDRAULIC BRAKESYSTEM

Bleed the hydraulic brake system when-ever: the system was disassembled, a brake hose was loosened or removed, the brake fluid level is very low, brake operation is faulty.

1. Remove: reservoir cap diaphragm 1

Be careful not to spill any brake fluid or al-low the brake master cylinder reservoir orbrake fluid reservoir to overflow.

When bleeding the hydraulic brake sys-tem, make sure that there is alwaysenough brake fluid before applying thebrake. Ignoring this precaution could allowair to enter the hydraulic brake system,considerably lengthening the bleedingprocedure.

If bleeding is difficult, it may be necessaryto let the brake fluid settle for a few hours.Repeat the bleeding procedure when thetiny bubbles in the hose have disappeared.

3-34

Rear

Front

a

b

BLEEDING THE HYDRAULIC BRAKE SYSTEM/ADJUSTING THE SHIFT PEDAL

CHKADJ

a

b

2. Bleed: hydraulic brake system

a. Add the recommended brake fluid to theproper level.

b. Install the diaphragm (brake master cylin-der reservoir or brake fluid reservoir).

c. Connect a clear plastic hose 1 tightly tothe bleed screw 2 .

d. Place the other end of the hose into a con-tainer.

e. Slowly apply the brake several times.f. Fully squeeze the brake lever or fully de-

press the brake pedal and hold it in posi-tion.

g. Loosen the bleed screw.This will release the tension and causethe brake lever to contact the throttle gripof the brake pedal to fully extend.

h. Tighten the bleed screw and then releasethe brake lever or brake pedal.

i. Repeat steps (e) to (h) until all of the airbubbles have disappeared from thebrake fluid in the plastic hose.

j. Tighten the bleed screw to specification.

Bleed screw6 Nm (0.6 mkg)

k. Fill the reservoir to the proper level.Refer to “CHECKING THE BRAKEFLUID LEVEL”.

After bleeding the hydraulic brake sys-tem, check the brake operation.

EB304080

ADJUSTING THE SHIFT PEDAL1. Check: shift pedal position

The end 1 of the shift pedal is above theshift rod. (The angle a should be approxi-mately 90.)Incorrect Adjust.

2. Adjust: shift pedal position

a. Loosen both locknuts 2 .b. Turn the shift rod 3 in direction a or b to

obtain the correct shift pedal position.

Direction shift pedal is raised.

Direction pedal is lowered.

Tighten both locknuts.

3-35

ADJUSTING THE DRIVE CHAIN SLACKCHKADJ

a

b

NOTE:

CAUTION:

NOTE:

a

b

NOTE:

EB304090

ADJUSTING THE DRIVE CHAIN SLACK

The drive chain slack must be checked at thetightest point on the chain.

A drive chain that is too tight will over-load the engine and other vital parts, andone that is too loose can skip and dam-age the swingarm or cause an accident.Therefore, keep the drive chain slackwithin the specified limits.

1. Stand the motorcycle on a level surface.

Securely support the motorcycle so thatthere is no danger of it falling over.

Both wheels should be on the ground with-out rider on the motorcycle.

2. Rotate the rear wheel several times andcheck the drive chain to locate its tightestpoint.

3. Check: drive chain slack a

Out of specification Adjust.

Drive chain slack30 40 mm

4. Loosen: wheel axle nut 1

5. Adjust: drive chain slack

a. Loosen both locknuts 1 .b. Turn both adjusting nuts 2 in direction a

or b until the specified drive chain slackis obtained.

Direction Drive chain istightened.

Direction Drive chain isloosened.

To maintain the proper wheel alignment,adjust both sides evenly.

Push the rear wheel forward to make surethat there is no clearance between theswingarm end plates and the ends of theswingarm.

3-36

ADJUSTING THE DRIVE CHAIN SLACK/LUBRICATING THEDRIVE CHAIN/CHECKING AND ADJUSTING THE STEERING HEAD

CHKADJ

NOTE:

c. Tighten the wheel axle nut to specifica-tion.

Wheel axle nut117 Nm (11.7 mkg)

Locknut16 Nm (1.6 mkg)

EB304100

LUBRICATING THE DRIVE CHAINThe drive chain consists of many interactingparts. If the drive chain is not maintained proper-ly, it will wear out rapidly.Therefore, the drive chain should be serviced,especially when the motorcycle is used in dustyareas. This motorcycle has a drive chain withsmall rubber O-rings between each side plate.Steam cleaning, high-pressure washing, certainsolvents, and the use of a coarse brush candamage these O-rings. Therefore, use only ker-osine to clean the drive chain. Wipe the drivechain dry and thoroughly lubricate it with engineoil or chain lubricant that is suitable for O-ringchains. Do not use any other lubricants on thedrive chain since they may contain solvents thatcould damage the O-rings.

Recommended lubricantEngine oil or chain lubricant suitablefor O-ring chains

EB304130

CHECKING AND ADJUSTING THESTEERING HEAD

1. Stand the motorcycle on a level surface.

Securely support the motorcycle so thatthere is no danger of it falling over.

Place the motorcycle on a suitable stand sothat the front wheel is elevated.

2. Check: steering head

Grasp the bottom of the front fork legs andgently rock the front fork.Looseness or binding Adjust the steer-ing head.

3. Remove: handlebar upper bracket

3-37

1

2

3

4

8

7

6

a

b

CHECKING AND ADJUSTING THE STEERING HEADCHKADJ

NOTE:

NOTE:

4. Adjust: steering head

a. Remove the lock washer 1 , the upperring nut 2 , and the rubber washer 3 .

b. Loosen the lower ring nut 4 and thentighten it to specification with a ring nutwrench 5 .

Set the torque wrench at a right angle to thering nut wrench.

Ring nut wrench90890-01403

Lower ring nut(initial tightening torque)

52 Nm (5.2 mkg)

c. Loosen the lower ring nut completely,then tighten it to specification.

Do not overtighten the lower ring nut.

Lower ring nut(final tightening torque)

18 Nm (1.8 mkg)

d. Check the steering head for looseness orbinding by turning the front fork all theway in both directions. If any binding isfelt, remove the lower bracket and inspectthe upper and lower bearings.Refer to “STEERING HEAD AND HAN-DLEBAR” in chapter 7.

e. Install the rubber washer 6 .f. Install the upper ring nut 7 .g. Finger tighten the upper ring nut 7 , then

align the slots of both ring nuts. If neces-sary, hold the lower ring nut and tightenthe upper ring nut until their slots arealigned.

h. Install the lock washer 8 .

Make sure that the lock washer tabs a sitcorrectly in the ring nut slots b .

3-38

CHECKING ADJUSTING THE STEERING HEAD/CHECKING THE FRONTFORK/ADJUSTING THE REAR SHOCK ABSORBER ASSEMBLY

CHKADJ

CAUTION:

NOTE:

5. Install: upper bracket handlebar

Steering stem nut110 Nm (11.0 mkg)

Upper bracket pinch bolt30 Nm (3.0 mkg)

Handlebar upper holder bolt23 Nm (2.3 mkg)

EB304140

CHECKING THE FRONT FORK1. Stand the motorcycle on a level surface.

Securely support the motorcycle so thatthere is no danger of it falling over.

2. Check: inner tube

Damage/scratches Replace. oil seal

Oil leakage Replace.

3. Hold the motorcycle upright and apply thefront brake.

4. Check: operation

Push down hard on the handlebar severaltimes and check if the front fork reboundssmoothly.Unsmooth operation Repair.Refer to “FRONT FORK” in chapter 7.

EB304160

ADJUSTING THE REAR SHOCK ABSORBERASSEMBLY

Securely support the motorcycle so thatthere is no danger of it falling over.

Spring preload

Never go beyond the maximum or mini-mum adjustment positions.

1. Adjust: spring preload

Adjust the spring preload with the specialwrench and extension bar included in theowner’s tool kit.

3-39

ADJUSTING THE REAR SHOCK ABSORBERASSEMBLY/CHECKING THE TIRES

CHKADJ

ab

adjusting position

a

b

a. Turn the adjusting ring 1 in direction a orb .

b. Align the desired position on the adjustingring with the stopper.

Direction Spring preload isincreased (suspensionis harder).

Direction Spring preload isdecreased (suspensionis softer).

Minimum Standard Maximum

Adjustingpositions

1 4 9

EB304170

CHECKING THE TIRESThe following procedure applies to both of thetires.

1. Measure: tire pressure

Out of specification Regulate.

The tire pressure should only bechecked and regulated when the tiretemperature equals the ambient airtemperature.

The tire pressure and the suspensionmust be adjusted according to the totalweight (including cargo, rider passen-ger and accessories) and the antici-pated riding speed.

Operation of an overloaded motorcyclecould cause tire damage, an accidentor an injury.

NEVER OVERLOAD THE MOTORCYCLE.

3-40

A B

3

2

1

CHECKING THE TIRESCHKADJ

Basic weight(with oil and afull fuel tank)

210 kg

Maximum load 187 kg

Cold tirepressure

Front tire Rear tire

Up to 90 kg load*225 kPa

(2.25kg/cm 2)

250 kPa(2.50

kg/cm 2)

90 kg maximumload*

225 kPa(2.25

kg/cm 2)

280 kPa(2.80

kg/cm 2)

High speedriding

225 kPa(2.25

kg/cm 2)

280 kPa(2.80

kg/cm 2)

*: total of cargo, rider, passenger andaccessories

It is dangerous to ride with a worn-outtire.When the tire tread reaches the wearlimit, replace the tire immediately.

2. Check: tire surface

Damage/wear Replace the tire.

Minimum tire tread depth1.6 mm

1 Tire tread depth2 Side wall3 Wear indicator

Do not use a tubeless tire on a wheel de-signed only for tube tires to avoid tirefailure and personal injury from suddendeflation.

When using a tube tire, be sure to installthe correct tube.

Always replace a new tube tire and anew tube as a set.

To avoid pinching the tube, make surethat the wheel rim band and tube arecentered in the wheel groove.

Patching a punctured tube is not rec-ommended. If it is absolutely neces-sary to do so, use great care and re-place the tube as soon as possible witha good quality replacement.A Tire B Wheel

Tube wheel Tube tire only

Tubeless wheel Tube or tubelesstire

3-41

CHECKING THE TIRES/CHECKING THE WHEELS

CHKADJ

NOTE:

NOTE:

After extensive tests, the tires listed be-low have been approved by YamahaMotor Co., Ltd. for this model. The frontand rear tires should always be by thesame manufacturer and of the same de-sign. No guarantee concerning han-dling characteristics can be given if atire combination other than one ap-proved by Yamaha is used on this mo-torcycle.

Front tire

Manufacturer Size Type

BRIDGESTONE 110/70-ZR17(54 W) BT57F

DUNLOP 110/70-ZR17(54 W) D207F

Rear tire

Manufacture Size Type

BRIDGESTONE160/60-ZR17

(69 W)BT57R

DUNLOP160/60-ZR17

(69 W)D207J

After mounting a new tire, ride conserva-tively for a while to become accustomedto the “feel” of the new tire and to allowthe tire to seat itself properly in the rim.Failure to do so could lead to an accidentwith possible injury to the rider or dam-age to the motorcycle.

For tires with a direction of rotation mark 1 : Install the tire with the mark printing in the

direction of wheel rotation.

EB304180

CHECKING THE WHEELSThe following procedure applies to both of thewheels.

1. Check: wheel

Damage/out-of-round Replace.

Never attempt to make any repairs to thewheel.

After a tire or wheel has been changed or re-placed, always balance the wheel.

3-42

CHECKING AND LUBRICATING THE CABLES/ LUBRICATING THELEVERS AND PEDALS/LUBRICATING THE SIDESTAND/ LUBRICATING

THE CENTER STAND/LUBRICATING THE REAR SUSPENSION

CHKADJ

NOTE:

EB304200

CHECKING AND LUBRICATING THECABLESThe following procedure applies to all of thecable sheaths and cables.

Damaged cable sheaths may cause thecable to corrode and interfere with itsmovement. Replace damaged cablesheaths and cables as soon as possible.

1. Check: cable sheath

Damage Replace.

2. Check: cable operation

Unsmooth operation Lubricate.

Recommended lubricantEngine oil or a suitable cablelubricant

Hold the cable end upright and pour a fewdrops of lubricant into the cable sheath oruse a suitable lubing device.

DB304210

LUBRICATING THE LEVERS AND PEDALSLubricate the pivoting point and metal-to-metalmoving parts parts of the levers and pedals.

Recommended lubricantLithium soap base grease

EB304220

LUBRICATING THE SIDESTANDLubricate the pivoting point and metal-to-metalmoving parts of the sidestand.

Recommended lubricantLithium soap base grease

LUBRICATING THE CENTER STANDLubricate the pivoting point and metal-to-metalmoving parts of the center stand.

Recommended lubricantLithium soap base grease

EB304240

LUBRICATING THE REAR SUSPENSIONLubricate the pivoting point and metal-to-metalmoving parts of the rear suspension.

Recommended lubricantMolybdenum disulfide grease

3-43

CHECKING AND CHARGING THE BATTERYCHKADJ

CAUTION:

EB305020

ELECTRICAL SYSTEMCHECKING AND CHARGING THE BATTERY

Batteries generate explosive hydrogengas and contain electrolyte which ismade of poisonous and highly causticsulfuric acid.Therefore, always follow these preven-tive measures: Wear protective eye gear when han-

dling or working near batteries. Charge batteries in a well-ventilated

area. Keep batteries away from fire, sparks or

open flames (e.g., welding equipment,lighted cigarettes).

DO NOT SMOKE when charging or han-dling batteries.

KEEP BATTERIES AND ELECTROLYTEOUT OF REACH OF CHILDREN.

Avoid bodily contact with electrolyte asit can cause severe burns or permanenteye injury.

First aid in case of bodily contact:External SKIN – Wash with water. EYES – Flush with water for 15 minutes

and get immediate medical attention.InternalDrink large quantities of water or milk fol-lowed with milk of magnesia, beaten eggor vegetable oil. Get immediate medicalattention.

This is a sealed battery. Never removethe sealing caps because the balancebetween cells will not be maintainedand battery performance will deterio-rate.

Charging time, charging amperage andcharging voltage for a MF battery aredifferent from those of conventionalbatteries. The MF battery should becharged as explained in the chargingmethod illustrations. If the battery isovercharged, the electrolyte level willdrop considerably.Therefore, take special care whencharging the battery.

3-44

CHECKING AND CHARGING THE BATTERYCHKADJ

NOTE:

CAUTION:

NOTE:

Since MF batteries are sealed, it is not pos-sible to check the charge state of the batteryby measuring the specific gravity of the elec-trolyte. Therefore, the charge of the batteryhas to be checked by measuring the voltageat the battery terminals.

1. Remove: seat

2. Disconnect: battery leads

(from the battery terminals)

First, disconnect the negative lead 1 ,then the positive lead 2 .

3. Remove: battery

4. Check: battery charge

a. Connect a digital voltmeter to the batteryterminals.

Tester positivelead

battery positiveterminal

Tester negativelead

battery negativeterminal

The charge state of a MF battery can bechecked by measuring its open-circuit volt-age (i.e., the voltage when the positive ter-minal is disconnected).

No charging is necessary when the open-circuit voltage equals or exceeds 12.8 V.

b. Check the charge of the battery, asshown in the charts and the following ex-ample.

Examplec. Open-circuit voltage = 12.0 Vd. Charging time = 6.5 hourse. Charge of the battery = 20 30 %

5. Charge: battery

(refer to the appropriate charging methodillustration)

3-45

CHECKING AND CHARGING THE BATTERYCHKADJ

Do not quick charge a battery.

Make sure that the battery vent is free ofobstructions.

Never remove the MF battery sealingcaps.

Do not use a high-rate battery charger.They force a high-amperage currentinto the battery quickly and can causebattery overheating and battery platedamage.

If it is impossible to regulate the charg-ing current on the battery charger, becareful not to overcharge the battery.

When charging a battery, be sure to re-move it from the motorcycle. (If charg-ing has to be done with the batterymounted on the motorcycle, discon-nect the negative lead from the batteryterminal.)

To reduce the chance of sparks, do notplug in the battery charger until the bat-tery charger leads are connected to thebattery.

Before removing the battery chargerlead clips from the battery terminals, besure to turn off the battery charger.

Make sure that the battery charger leadclips are in full contact with the batteryterminal and that they are not shorted.A corroded battery charger lead clipmay generate heat in the contact areaand a weak clip spring may causesparks.

If the battery becomes hot to the touchat any time during the charging pro-cess, disconnect the battery chargerand let the battery cool before recon-necting it. Hot batteries can explode!

As shown in the following illustration,the open-circuit voltage of a MF batterystabilizes about 30 minutes after charg-ing has been completed. Therefore,wait 30 minutes after charging is com-pleted before measuring the open-cir-cuit voltage.

3-46

CHECKING AND CHARGING THE BATTERYCHKADJ

Measure the open-circuitvoltage prior to charging.

Connect a charged andAMP meter to the batteryand start charging.

Make sure that the currentis higher than the standardcharging current written onthe battery.

By turning the chargingvoltage adjust dial, set thecharging voltage at 20 24 V.

Adjust the voltage so that thecurrent is at the standardcharging level.

Monitor the amperage for3 5 minutes to check if thestandard charging current isreached.

Set the time according to thecharging time suitable for theopen-circuit voltage.Refer to “Battery conditionchecking steps”.

If the current does notexceed the standardcharging current after 5minutes, replace the battery.

If charging requires more than 5 hours, it is advisable to check thecharging current after a lapse of 5 hours. If there is any change in theamperage, readjust the voltage to obtain the standard chargingcurrent.

Measure the battery open-circuit voltage after leaving the batteryunused for more than 30 minutes.12.8 V or more — Charging is complete.12.7 V or less — Recharging is required.Under 12.0 V — Replace the battery.

YES NO

YES

NO

NOTE:

Voltage should be measured 30minutes after the machine is stopped.

NOTE:

Set the charging voltage at 16 17 V.(If the setting is lower, charging will beinsufficient. If too high, the battery willbe over-charged.)

Charging method using a variable-current (voltage) type charger

3-47

CHECKING AND CHARGING THE BATTERYCHKADJ

Measure the open-circuitvoltage prior to charging.

Connect a charger andAMP meter to the batteryand start charging.

NOTE:

Voltage should be measured 30minutes after the machine is stopped.

Make sure that the currentis higher than the standardcharging current written onthe battery.

Charge the battery until the battery’scharging voltage is 15 V. Charge thebattery until the battery’s chargingvoltage is 15 V.

This type of battery charger cannotcharge the MF battery. A variablevoltage charger is recommended.

Measure the battery open-circuitvoltage after leaving the batteryunused for more than 30 minutes.12.8 V or more — Charging iscomplete.12.7 V or less — Recharging isrequired.Under 12.0 V — Replace the battery.

NOTE:

Set the charging time at 20 hours(maximum).

YES NO

Charging method using a constant-voltage type charger

Charging method using a constant-current type chargerThis type of battery charger cannot charge the MF battery.

3-48

CHECKING AND CHARGING THE BATTERY/CHECKING THE FUSES

CHKADJ

CAUTION:

CAUTION:

NOTE:

6. Install: battery

7. Connect: battery leads

(to the battery terminals)

First, connect the positive lead 1 , thenthe negative lead 2 .

8. Check: battery terminals

Dirt Clean with a wire brush.Loose connection Connect properly.

9. Lubricate: battery terminals

Recommended lubricantDielectric grease

10. Install: seat

EB305040

CHECKING THE FUSESThe following procedure applies to all of thefuses.

To avoid a short circuit, always turn themain switch to “OFF” when checking orreplacing a fuse.

1. Remove: seat

2. Check: fuse

a. Connect the pocket tester to the fuse andcheck it for continuity.

Se the pocket tester selector to “Ω 1”.

Pocket tester96890-03112

b. If the pocket tester indicates “∞”, replacethe fuse.

3-49

CHECKING THE FUSES/REPLACING THE HEADLIGHT BLUBS

CHKADJ

3. Replace: blown fuse

a. Turn off the ignition.b. Install a new fuse of the correct amperage

rating.c. Turn on the switches to verify if the electri-

cal circuit is operational.d. If the fuse immediately blows again,

check the electrical circuit.

Fuses Amperagerating Quantity

Main fuse 30 A 1

Headlight fuse 20 A 1

Signalingsystem fuse 20 A 1

Ignition fuse 20 A 1

Radiatorfan fuse 5 A 1

30 A 1

Reserve fuse 20 A 1

10 A 1

Never use a fuse with an amperage ratingother than that specified. Improvising orusing a fuse with the wrong amperagerating may cause extensive damage tothe electrical system, cause the lightingand ignition systems to malfunction andcould possibly cause a fire.

4. Install: seat

EB305051

REPLACING THE HEADLIGHT BULBSThe following procedure applies to both of theheadlight bulbs.

1. Disconnect: headlight lead 1

3-50

REPLACING THE HEADLIGHT BULBS/ADJUSTING THE HEADLIGHT BEAMS

CHKADJ

a

a

aa

b

b

bb

CAUTION:

a

b

2. Remove: headlight bulb holder 1

3. Remove: headlight bulb 2

Since the headlight bulb gets extremelyhot, keep flammable products and yourhands away from the bulb until it hascooled down.

4. Install: headlight bulb (New)

Secure the new headlight bulb with theheadlight bulb holder.

Avoid touching the glass part of theheadlight bulb to keep it free from oil,otherwise the transparency of the glass,the life of the bulb and the luminous fluxwill be adversely affected. If the headlightbulb gets soiled, thoroughly clean it witha cloth moistened with alcohol or lacquerthinner.

5. Install: headlight bulb holder

6. Connect: headlight lead

EB305061

ADJUSTING THE HEADLIGHT BEAMSThe following procedure applies to both of theheadlights.

1. Adjust: headlight beam (vertically)

a. Turn the adjusting screw 1 3 in directiona or b .

Direction Headlight beam israised.

Direction Headlight beam islowered.

3-51

ADJUSTING THE HEADLIGHT BEAMSCHKADJ

a

b

a

b

2. Adjust: headlight beam (horizontally)

a. Turn the adjusting knob 2 4 in directiona or b .Left headlight 2

Direction Headlight beammoves to the right.

Direction Headlight beammoves to the left.

Right headlight 4

Direction Headlight beammoves to the left.

Direction Headlight beammoves o the right.

CHKADJ

ENG

4

ENG

CHAPTER 4OVERHAULING THE ENGINE

REMOVING THE ENGINE 4-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . DRIVE SPROCKET AND EXHAUST PIPE 4-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . LEADS AND HOSES 4-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ENGINE BRACKET AND ENGINE 4-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . INSTALLING THE ENGINE 4-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

CAMSHAFT 4-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CYLINDER HEAD COVERS 4-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CAMSHAFTS 4-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . REMOVING THE CAMSHAFTS 4-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CHECKING THE CAMSHAFTS 4-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CHECKING THE TIMING CHAIN, CAMSHAFT SPROCKETS,AND TIMING CHAIN GUIDES 4-10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CHECKING THE TIMING CHAIN TENSIONER 4-11. . . . . . . . . . . . . . . . . . . . . . . . . . . INSTALLING THE CAMSHAFTS 4-11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

CYLINDER HEAD 4-14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . REMOVING THE CYLINDER HEADS 4-15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CHECKING THE CYLINDER HEADS 4-15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . INSTALLING THE CYLINDER HEAD 4-16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

VALVES AND VALVE SPRINGS 4-17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . REMOVING THE VALVES 4-18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CHECKING THE VALVES AND VALVE GUIDES 4-19. . . . . . . . . . . . . . . . . . . . . . . . . . CHECKING THE VALVE SEATS 4-20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CHECKING THE VALVE SPRINGS 4-22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CHECKING THE VALVE LIFTERS 4-22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CHECKING THE CAMSHAFT CAP 4-23. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . INSTALLING THE VALVES 4-23. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

CYLINDERS AND PISTONS 4-25. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . REMOVING THE CYLINDERS AND PISTONS 4-26. . . . . . . . . . . . . . . . . . . . . . . . . . . CHECKING THE CYLINDERS AND PISTONS 4-26. . . . . . . . . . . . . . . . . . . . . . . . . . . . CHECKING THE PISTON RINGS 4-27. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CHECKING THE PISTON PINS 4-28. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . INSTALLING THE PISTON AND CYLINDER 4-29. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

CLUTCH 4-31. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CLUTCH COVER 4-31. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CLUTCH 4-32. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . REMOVING THE CLUTCH 4-34. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CHECKING THE FRICTION PLATES 4-34. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CHECKING THE CLUTCH PLATES 4-34. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CHECKING THE CLUTCH SPRINGS 4-35. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CHECKING THE CLUTCH SPRING PLATE 4-35. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CHECKING THE CLUTCH HOUSING 4-35. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CHECKING THE CLUTCH BOSS 4-36. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CHECKING THE PRESSURE PLATE 4-36. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CHECKING THE CLUTCH PUSH RODS 4-36. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . INSTALLING THE CLUTCH 4-36. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

SHIFT SHAFT 4-39. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CHECKING THE SHIFT SHAFT 4-40. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . INSTALLING THE SHIFT SHAFT 4-40. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

ENG

AC MAGNETO AND STARTER CLUTCH 4-41. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . STATOR COIL 4-41. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . STARTER CLUTCH 4-42. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . AC MAGNETO ROTOR 4-43. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . REMOVING THE STARTER CLUTCH 4-44. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . REMOVING THE AC MAGNETO 4-44. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CHECKING THE STARTER CLUTCH 4-45. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . INSTALLING THE AC MAGNETO 4-46. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . INSTALLING THE STARTER CLUTCH 4-46. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

OIL PAN AND OIL STRAINER 4-47. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . OIL STRAINER 4-47. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . OIL PUMP 4-48. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . REMOVING THE OIL PAN 4-50. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CHECKING THE OIL PUMP 4-50. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CHECKING THE RELIEF VALVE 4-50. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CHECKING THE OIL STRAINER 4-51. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CHECKING THE OIL NOZZLE 4-51. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ASSEMBLING THE OIL PUMP 4-51. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . INSTALLING THE OIL PUMP 4-52. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . INSTALLING THE OIL STRAINER 4-52. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . INSTALLING THE OIL PAN 4-52. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

CRANKCASE 4-54. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . DISASSEMBLING THE CRANKCASE 4-56. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CHECKING THE CRANKCASE 4-56. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ASSEMBLING THE CRANKCASE 4-57. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

CRANKSHAFT 4-59. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CONNECTING ROD 4-60. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . REMOVING THE CRANKSHAFT ASSEMBLY 4-61. . . . . . . . . . . . . . . . . . . . . . . . . . . . REMOVING THE CONNECTING RODS 4-61. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CHECKING THE CRANKSHAFT AND CONNECTING RODS 4-61. . . . . . . . . . . . . . . INSTALLING THE CONNECTING RODS 4-66. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . INSTALLING THE CRANKSHAFT 4-68. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

TRANSMISSION 4-69. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CHECKING THE TRANSMISSION 4-72. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . INSTALLING THE TRANSMISSION 4-73. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

SHIFT DRUM AND SHIFT FORKS 4-74. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CHECKING THE SHIFT FORKS 4-75. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CHECKING THE SHIFT DRUM ASSEMBLY 4-75. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . INSTALLING THE SHIFT FORKS AND SHIFT DRUMASSEMBLY 4-75. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4-1

70 Nm (7.0 mkg)

10 Nm (1.0 mkg)

10 Nm (1.0 mkg)

10 Nm (1.0 mkg)

25 Nm (2.5 mkg)

17 Nm (1.7 mkg)

Order Job name/Part name Q’ty Remarks

123

Removing the drive sprocket andexhaust pipeDrain the coolantDrain the engine oil

Front cowling

Fuel tank

Battery negative terminalRadiatorCarburetor

Starter motor

Exhaust pipe assemblyExhaust pipe gasketOil filter

141

Remove the parts in the order listed.

Refer to “CHANGING THE ENGINE OIL”section in capter 3.Refer to “FRONT COWLING/SEAT/SIDE COVER/FUEL TANK” section inchapter 3.

Refer to “RADIATOR” section in chapter 5.Refer to “CARBURETOR” section inchapter 6.Refer to “STARTER MOTOR” section inchapter 8.

REMOVING THE ENGINE ENG

OVERHAULING THE ENGINEREMOVING THE ENGINEDRIVE SPROCKET AND EXHAUST PIPE

4-2

25 Nm (2.5 mkg)

70 Nm (7.0 mkg)

10 Nm (1.0 mkg)

10 Nm (1.0 mkg)

10 Nm (1.0 mkg)

17 Nm (1.7 mkg)

Order Job name/Part name Q’ty Remarks

456789

Shift armDrive sprocket coverDrive chain sprocket gasketDowel pinLock washerDrive sprocket/Drive chain

11121

1/1

Refer to “INSTALLING THE ENGINE”section.

For installation, reverse the removalprocedure.

REMOVING THE ENGINE ENG

4-3

12 Nm (1.2 mkg)

Order Job name/Part name Q’ty Remarks

1

23456789

Disconnecting the leads and hosesMagneto/sidestand/neutral /engine oillevel switch leadGround leadPlug capCrankcase breather hoseCoverWater pump outlet hoseRadiator outlet hoseEngine outlet hoseEngine outlet hose

1/1/1/1

14111111

Disconnect the parts in the order listed.

For connecting, reverse the disconnectionprocedure.

Engine right side Engine left side

12 Nm (1.2 mkg)

REMOVING THE ENGINE ENG

LEADS AND HOSES

4-4

33 Nm (3.3 mkg)

55 Nm (5.5 mkg)

33 Nm (3.3 mkg)

55 Nm (5.5 mkg)

33 Nm (3.3 mkg)

Order Job name/Part name Q’ty Remarks

1234567

Removing the engine bracket andengineEngine mounting bolt (front left)Engine mounting bolt (front right)Engine bracket (front)Engine mounting bolt (rear upper)Engine bracket (rear right)Engine mounting bolt (rear lower)Engine

1111111

Remove the parts in the order listed.

Refer to “INSTALLING THE ENGINE”section.

For installation, reverse the removalprocedure.

REMOVING THE ENGINE ENG

ENGINE BRACKET AND ENGINE

4-5

REMOVING THE ENGINE ENG

NOTE:

NOTE:

EB400700

INSTALLING THE ENGINE1. Install: bolt 1 bolt 2 bolt 3 bolt 4 engine bracket 5 engine bracket 6

Do not fully tighten the bolts.

2. Tighten the bolts in the following order.

Bolt 155 Nm (5.5 mkg)

Bolt 255 Nm (5.5 mkg)

Bolt 355 Nm (5.5 mkg)

Bolt 455 Nm (5.5 mkg)

Engine bracket 533 Nm (3.3 mkg)

Engine bracket 610 Nm (10 mkg)

3. Install: shift arm 1

Align the punch mark a in the shift shaftwith the slot in the shift arm.

Align the bottom edge of the shift pedal bwith the mark a on the frame-to-swingarmbracket.

Shift arm bolt10 Nm (1.0 mkg)

4-6

10 Nm (1.0 mkg)

9 Nm (0.9 mkg)

Order Job name/Part name Q’ty Remarks

123

Removing the cylinder head coverFront cowling

Seat and fuel tank

Drain the coolantRadiatorCarburetor

Exhaust pipePlug capCylinder head side coverCylinder head coverCylinder head cover gasket

411

Remove the parts in the order listed.Refer to “FRONT COWLING/SEAT/SIDE COVER/FUEL TANK” sectionin chapter 3.

Refer to “RADIATOR” section in chapter 5.Refer to “CARBURETOR” section inchapter 6.Refer to “REMOVING THE ENGINE”section.

For installation, reverse the removalprocedure.

CAMSHAFT ENG

CAMSHAFTCYLINDER HEAD COVERS

4-7

10 Nm (1.0 mkg)

20 Nm (2.0 mkg)

13 Nm (1.3 mkg)

10 Nm (1.0 mkg)

10 Nm (1.0 mkg)

Order Job name/Part name Q’ty Remarks

123456789

10

Removing the camshaftsSpark plugMagneto coverTiming chain guide (upper)Timing chain tensioner assemblyTiming chain guide (exhaust side)Camshaft capDowel pinCamshaft (intake)Cmashaft (exhaust)Camshaft sprocket

411114

12112

Remove the parts in the order listed.

Refer to “REMOVING/INSTALLING THECAMSHAFT” section.

For installation, reverse the removalprocedure.

CAMSHAFT ENG

CAMSHAFT

4-8

CAMSHAFT ENG

2

NOTE:

NOTE:

EB401102

REMOVING THE CAMSHAFTS1. Remove: magneto cover

2. Align: “T” mark on the magneto rotor

(with the stationary pointer on the crank-case)

a. Turn the crankshaft counterclockwise.b. When piston #1 is at TDC on the com-

pression stroke, align the “T” mark a withthe stationary pointer b .

TDC on the compression stroke can befound when the camshaft lobes are turnedaway from each other.

3. Remove: timing chain guide (top side) 1

4. Loosen: camshaft sprocket bolts 2

5. Loosen: timing chain tensioner cap bolt 1

6. Remove: timing chain tensioner 2

7. Remove: timing chain guide (exhaust side) 1 camshaft caps 2

For reference during installation, put identifi-cation marks on each camshaft cap.

4-9

1

32

CAMSHAFT ENG

CAUTION:

NOTE:

To prevent damage to the cylinder head,camshafts or camshaft caps, loosen thecamshaft cap bolts in stages and in acrisscross pattern, working from the out-side in.

8. Remove: intake camshaft 1 exhaust camshaft 2

To prevent the timing chain from falling intothe crankcase, fasten it with a wire 3 .

EB401401

CHECKING THE CAMSHAFTS1. Check: camshaft lobes

Blue discoloration/pitting/scratches

Replace the camshaft.

2. Measure: camshaft lobe dimensions A and B

Out of specification Replace the cam-shaft.

Camshaft lobe dimension limitIntake

A 32.7 mmB 24.95 mm

ExhaustA 32.4mmB 24.9 mm

3. Measure: camshaft runout

Out of specification Replace.

Camshaft runoutLess than 0.03 mm

4-10

CAMSHAFT ENG

1NOTE:

4. Measure: camshaft-journal-to-camshaft-cap clear-

anceOut of specification Measure the cam-shaft journal diameter.

Camshaft-journal-to-camshaft-cap clearance

0.08 mm

a. Install the camshaft into the cylinder head(without the dowel pins and camshaftcaps).

b. Position a strip of Plastigauge 1 ontothe camshaft journal as shown.

c. Install the dowel pins and camshaft caps.

Tighten the camshaft cap bolts in stagesand in a crisscross pattern, working fromthe inner caps out.

Do not turn the camshaft when measuringthe camshaft journal-to-camshaft capclearance with the Plastigauge .

Camshaft cap bolt10 Nm (1.0 mkg)

a. Remove the camshaft caps and thenmeasure the width of the Plastigauge

1 .

EB401421

CHECKING THE TIMING CHAIN,CAMSHAFT SPFROCKETS, AND TIMINGCHAIN GUIDESThe following procedure applies to all of thecamshaft sprockets and timing chain guides.

1. Check: timing chain 1

Damage/stiffness Replace the timingchain and camshaft sprockets as a set.

2. Check: camshaft sprocket

More than 1/4 tooth a wear Replacethe camshaft sprockets and the timingchain as a set.

a 1/4 toothb Correct1 Timing chain roller2 Camshaft sprocket

3. Check: timing chain guide (exhaust side) timing chain guide (intake side) timing chain guide (top side)

Damage/wear Replace the defectivepart(-s).

4-11

2

1

3

2 2

3

4 4

CAMSHAFT ENG

NOTE:

NOTE:

NOTE:

EB401430

CHECKING THE TIMING CHAIN TENSIONER1. Check: timing chain tensioner

Cracks/damage Replace.

2. Check: one-way cam operation

Rough movement Replace the timingchain tensioner housing.

3. Check: cap bolt 1 copper washer 2 ball 3 spring 4 ball 5 one-way cam 6 gasket timing chain tensioner rod 7

Damage/wear Replace the defectivepart(-s).

EB401702

INSTALLING THE CAMSHAFTS1. Install: exhaust camshaft 1 intake camshaft 2

(with the camshaft sprockets temporarilytightened)

Install the camshafts with their punch marksfacing up.

2. Install: dowel pins 1 intake camshaft caps 2 exhaust camshaft caps 3

Install the camshaft cap with the arrow marka pointing towards the right side of the en-gine.

3. Install: camshaft cap bolts

Tighten the camshaft cap bolts in stagesand in a crisscross pattern, working fromthe inner caps out.

Do not install the designated camshaft capbolts 4 at this stage.

4-12

4 6

53

21

“E”

“I”

C

C

CAMSHAFT ENG

CAUTION:

NOTE:

CAUTION:

The camshaft cap bolts must be tight-ened evenly or damage to the cylinderhead, camshaft caps, and camshafts willresult.

Camshaft cap bolt10 Nm (1.0 mkg)

4. Install: intake camshaft sprocket exhaust camshaft sprocket

a. Turn the crankshaft counterclockwise.b. When piston #1 is at TDC on the com-

pression stroke, align the “T” mark a onthe magneto rotor with the stationarypointer b on the crankcase.

c. Install the timing chain onto both cam-shaft sprockets and then install the cam-shaft sprockets onto the camshafts.

When installing the camshaft sprockets,start with the exhaust camshaft and besure to keep the timing chain as tight aspossible on the exhaust side.

Make sure that the match marks c areparallel with the edge of the cylinder head.

“I”: Intake side“E”: Exhaust side

Do not turn the crankshaft when instal-ling the camshaft to avoid damage or im-proper valve timing.

d. After the crankshaft is turned several fullturns and piston #1 is at TDC, make surethat marks a and b are aligned.

5. Install: timing chain guide (exhaust side)

6. Install: timing chain tensioner

a. Remove the cap bolt 1 , washer 2 , andsprings 3

b. Release the timing chain tensioner one-way cam 4 and push the timing chaintensioner rod 5 all the way into the timingchain tensioner housing.

c. Install the timing chain tensioner and gas-ket 6 onto the cylinder block.

4-13

CAMSHAFT ENG

c

cd

d

CAUTION:

Always use a new gasket.

Timing chain tensioner bolt10 Nm (1.0 mkg)

d. Install the springs 3 , washer 2 , and capbolt 1 .

Cap bolt20 Nm (2.0 mkg)

7. Turn: crankshaft

(several full turns counterclockwise)

8. Check: “T” mark a

Make sure that the “T” mark on the magne-to rotor is aligned with the stationary point-er b on the crankcase.

camshaft punch marks cMake sure that the punch marks on thecamshafts are aligned with the embossedmarks d on the camshaft cap.Out of alignment Adjust.Refer to the installation steps above.

9. Tighten: camshaft sprocket bolts

Be sure to tighten the camshaft sprocketbolts to the specified torque to avoid thepossiblity of the bolts coming loose anddamaging the engine.

Camshaft sprocket bolt24 Nm (2.4 mkg)

10. Measure: valve clearance

Out of specification Adjust.Refer to “ADJUSTING THE VALVECLEARANCE” in chapter 3.

4-14

35 Nm (3.5 mkg)

20 Nm (2.0 mkg)

Order Job name/Part name Q’ty Remarks

123456

Removing the cylinder headCamshaftUnion boltCopper washerOil delivery pipeCylinder headCylinder head gasketDowel pin

241112

Remove the parts in the order listed.Refer to “CAMSHAFT”section.

Refer to “REMOVING/INSTALLING THECYLINDER HEAD” section.

For installation, reverse the removalprocedure.

CYLINDER HEAD ENG

CYLINDER HEAD

4-15

CYLINDER HEAD ENG

NOTE:

NOTE:

NOTE:

EB402101

REMOVING THE CYLINDER HEADS1. Remove: cylinder head nuts

Loosen the nuts in the proper sequence asshown.

Loosen each nut 1/2 of a turn at a time.After all of the nuts are fully loosened, re-move them.

EB402403

CHECKING THE CYLINDER HEADSThe following procedure applies to all of the cyl-inder heads.

1. Eliminate: carbon deposits

(from the combustion chambers with apounded scraper)

Do not use a sharp instument to avoid dam-aging or scratching: spark plug threads valve seats

2. Check: cylinder head

Damage/scratches Replace. cylinder head water jacket

Mineral deposits/rust Eliminate.

3. Measure: cylinder head warpage

Out of specification Resurface the cylin-der head.

Cylinder head warpageLess than 0.05 mm

a. Place a straightedge 1 and a thicknessgauge 2 across the cylinder head.

b. Measure the warpage.c. If the limited is exceeded, resurface the

cylinder head as follows.d. Place a 400 600 grit wet sandpaper on

the surface plate and resurface the cylin-der head using a figure-eight sanding pat-tern.

To ensure an even surface, rotate the cylin-der head several times.

4-16

CYLINDER HEAD ENG

NOTE:

NOTE:

EB402702

INSTALLING THE CYLINDER HEAD1. Install: gasket (New) 1 dowel pins 2

The “UP” mark a on the gasket must faceup.

2. Install: cylinder head

Apply engine oil onto the threads of the cyl-inder head nuts.

Tighten the cylinder head nuts in the prop-er tightening sequence as shown andtorque them in two stages.

Cylinder head nutFirst 20 Nm (2.0 m kg)Second 35 Nm (3.5 m kg)

3. Install: exhaust camshaft intake camshaft

Refer to “INSTALLING THE CAM-SHAFTS”.

4-17

Order Job name/Part name Q’ty Remarks

123456789

Removing the valves and valvespringsCamshaftCylinder headValve lifterAdjusting padValve cottersUpper spring seatValve springValve (intake)Valve (exhaust)Oil sealLower spring seat

448442244

Remove the parts in the order listed.

Refer to “CAMSHAFT” section.Refer to “CYLINDER HEAD” section.

Refer to “REMOVING/INSTALLING THEVALVES” section.

For installation, reverse the removalprocedure.

VALVES AND VALVE SPRINGS ENG

VALVES AND VALVE SPRINGS

4-18

VALVES AND VALVE SPRINGS ENG

1

a

NOTE:

NOTE:

NOTE:

NOTE:

EB403100

REMOVING THE VALVESThe following procedure applies to all of thevalves and related components.

Before removing the internal parts of thecylinder head (e.g., valves, valve springs,valve seats), make sure that the valvesproperly seal.

1. Remove: valve lifter 1 valve pad

Make a note of the position of each valvelifter and valve pad so that they can bereinstalled in their original place.

2. Check: valve sealing

Leakage at the valve seat Check thevalve face, valve seat, and valve seataidth.Refer to “CHECKING THE VALVESEATS”.

a. Pour a clean solvent a into the intakeand exhaust ports.

b. Check that the valves properly seal.There should be no leakage at the valveseat 1 .

3. Remove: valve cotters 1

Remove the valve cotters by compressingthe valve spring with the valve spring com-pressor 2 and attachment 3 .

Valve spring compressor90890-04019

Attachment90890-04114

4. Remove: upper spring seat 1 valve spring 2 oil seal 3 lower spring seat 4 valve 5

Identify the position of each part very care-fully so that it can be reinstalled in its originalplace.

4-19

a

b

VALVES AND VALVE SPRINGS ENG

ab

NOTE:

NOTE:

EB403400

CHECKING THE VALVES AND VALVEGUIDESThe following procedure applies to all of thevalves and valve guides.

1. Measure: valve-stem-to-valve-guide clearance

Valve-stem-to-valve-guideclearance =

Valve guide inside diameter –Valve stem diameter

Out of specification Replace the valveguide.

Valve-stem-to-valve-guideclearance

IntakeLimit: 0.08 mm

ExhaustLimit: 0.1 mm

2. Replace: valve guide

To ease valve guide removal and installa-tion, and to maintain the correct fit, heat thecylinder head to 100C (212C) in an oven.

a. Remove the valve guide with a valveguide remover 1 .

b. Install the new valve guide with a valveguide installer 2 and valve guide remov-er 1 .

c. After installing the valve guide, bore thevalve guide with a valve guide reamer 3to obtain the proper valve-stem-to-valve-guide clearance.

After replacing the valve guide, reface thevalve seat.

Valve guide remover (ø4.0 mm)90890-04111

Valve guide installer (ø4.0 mm)90890-04112

Valve guide reamer (ø4.0 mm)90890-04113

3. Eliminate: carbon deposits

(from the valve face and valve seat)

4-20

VALVES AND VALVE SPRINGS ENG

a

4. Check: valve face

Pitting/wear Grind the valve face. valve stem end

Mushroom shape of diameter larger thanthe body of the valve stem Replace thevalve.

5. Measure: valve margin thickness a

Out of specification Replace the valve.

Valve margin thickness0.5 mm

6. Measure: valve stem runout a

Out of specification Replace the valve.

When installing a new valve, always re-place the valve guide.

If the valve is removed or replaced, alwaysreplace the oil seal.

Valve stem runoutLimit 0.04 mm

EB403410

CHECKING THE VALVE SEATSThe following procedure applies to all of thevalves and vlve seats.

1. Eliminate: carbon deposits

(from the valve face and valve seat)

2. Check: valve seat

Pitting/wear Replace the cylinder head.

3. Measure: valve seat width a

Out of specification Replace the cylin-der head.

Valve seat widthIntake: 0.9 1.1 mm

(Limit 1.6 mm)Exhaust:0.9 1.1 mm

(Limit 1.6 mm)

4-21

VALVES AND VALVE SPRINGS ENG

NOTE:

CAUTION:

NOTE:

a. Apply Mechanic’s blueing dye (Dykem)b onto the valve face.

b. Install the valve into the cylinder head.c. Press the valve through the valve guide

and onto the valve seat to make a clearpattern.

d. Measure the valve seat width. Where thevalve seat and valve face contacted oneanother, the blueing will have been re-moved.

4. Lap: valve face valve seat

After replacing the cylinder head or replac-ing the valve and valve guide, the valve seatand valve face should be lapped.

a. Apply a coarse lapping compound a tothe valve face.

Do not let the lapping compound enterthe gap between the valve stem and thevalve guide.

b. Apply molybdenum disulfide oil onto thevalve stem.

c. Install the valve into the cylinder head.d. Turn the valve until the valve face and

valve seat are evenly polished, thenclean off all of the lapping compound.

For the best lapping results, lightly tap thevalve seat while rotating the valve back andforth between your hand.

e. Apply a fine lapping compound to thevalve face and repeat the above steps.

f. After every lapping procedure, be sure toclean off all of the lapping compound fromthe valve face and valve seat.

g. Apply Mechanic’s blueing dye (Dykem)b onto the valve face.

h. Install the valve into the cylinder head.i. Press the valve through the valve guide

and onto the valve seat to make a clearimpression.

j. Measure the valve seat width a again. Ifthe valve seat width is out of specification,reface and lap the valve seat.

4-22

VALVES AND VALVE SPRINGS ENG

a

a

EB403420

CHECKING THE VALVE SPRINGSThe following procedure applies to all of thevalve springs.

1. Measure: valve spring free length a

Out of specification Replace the valvespring.

Valve spring free length(intake and exhaust)

Spring40.09 mm (Limit 37.5 mm)

2. Measure: compressed spring force a

Out of specification Replace the valvespring.

b Installed length

Compressed spring forceIntake and exhaust spring

13,4 15,6 kg at 34.5 mm

3. Measure: valve spring tilt a

Out of specification Replace the valvespring.

Spring tilt limitIntake and exhaust spring

1.8 mm

EB403430

CHECKING THE VALVE LIFTERSThe following procedure applies to all of thevalve lifters.

1. Check: valve lifter

Damage/scratches Replace the valvelifters and cylinder head.

4-23

VALVES AND VALVE SPRINGS ENG

2

1

22

15

4

3

2

a

b

Large

Small

NOTE:

NOTE:

EB403440

CHECKING THE CAMSHAFT CAP1. Check: camshaft case camshaft caps 1

Cracks/damage Replace th camshaftcase and camshaft caps as a set, andcheck the camshafts (Refer to “CHECK-ING THE CAMSHAFTS”.).

camshaft bearing surfaces 2Damage/pitting/scratches Replace thecamshaft case and camshaft caps as aset, and check the camshafts (Refer to“CHECKING THE CAMSHAFTS”.).

2. Check: oil delivery pipes 1

Damage Replace the defective part(-s).Dirt /obstruction Wash the pipe(-s) andthen blow it out with compressed air.

EB403700

INSTALLING THE VALVESThe following procedure applies to all of thevalves and related components.

1. Deburr: valve stem end

(with an oil stone)

2. Lubricate: valve stem 1 oil seal

(with the recommended lubricant)

Recommended lubricantMolybdenum disulfide oil

3. Install: valve 1 lower spring seat 2 oil seal 3 valve spring 4 upper spring seat 5

(into the cylinder head)

Install the valve spring with the larger pitcha facing up.

b Smaller pitch

4. Install: valve cotters 1

Install the valve cotters by compressing thevalve spring with the valve spring compres-sor 2 and attachment 3 .

4-24

VALVES AND VALVE SPRINGS ENG

CAUTION:

NOTE:

Valve spring compressor90890-04019

Attachment90890-04114

5. To secure the valve cotters 1 onto the avalve stem, lightly tap the valve tip with asoft-face hammer.

Hitting the valve tip with excessive forcecould damage the valve.

6. Install: valve pad 1 valve lifter 2

Apply molybdenum disulfide oil onto thevalve lifter and valve pad.

The valve lifter must move smoothly whenrotated with a finger.

Each valve lifter and valve pad must be re-installed in its original position.

4-25

10 Nm (1.0 mkg)

Order Job name/Part name Q’ty Remarks

123456789

10

Removing the cylinder and pistonsCylinder headWater jacket jointO-ringCylinderCylinder gasketDowel pinO-ringPiston pin circlipPiston pinPistonPiston ring set

1211248444

Remove the parts in the order listed.Refer to “CYLINDER HEAD” section.

Refer to “INSTALLING THE PISTON ANDCYLINDER” section.

Refer to “REMOVING THE CYLINDERAND PISTONS/INSTALLING THEPISTON AND CYLINDER” section.

For installation, reverse the removalprocedure.

CYLINDER AND PISTON ENG

CYLINDER AND PISTON

4-26

1

2

4

CYLINDER AND PISTON ENG

CAUTION:

NOTE:

NOTE:

NOTE:

EB404101

REMOVING THE CYLINDERS AND PISTONSThe following procedure applies to all of the cyl-inders and pistons.

1. Remove: piston pin clip 1 piston pin 2 piston 3

Do not use a hammer to drive the pistonpin out.

Before removing the piston pin clip, coverthe crankcase opening with a clean rag toprevent the piston pin clip from falling intothe crankcase.

For reference during installation, put anidentification mark on each piston crown.

Before removing the piston pin, deburr thepiston pin clip’s groove and the piston’s pinbore area. If both areas are deburred andthe piston pin is still difficult to remove, re-move it with the piston pin puller 4 .

Piston pin puller90890-01304

2. Remove: top ring 2nd ring oil ring

When removing a piston ring, open the endgap with your fingers and lift the other side ofthe ring over the piston crown.

EB404405

CHECKING THE CYLINDERS AND PISTONSThe following procedure applies to all of the cyl-inders and pistons.

1. Check: piston wall cylinder wall

Vertical scratches Rebore or replacethe cylinder, and replace the piston andpiston rings as a set.

2. Measure: piston-to-cylinder clearance

a. Measure cylinder bore “C” with the cylin-der bore gauge.

1 20 mm from the top of the cylinder

Measure cylinder bore “C” by taking side-to-side and front-to-back measurements of thecylinder. Then, find the average of the mea-surements.

4-27

CYLINDER AND PISTON ENG

P

a

“C” =X + Y

2

NOTE:

Standard Wear limit

Cylinderbore “C”

62.00 62.01 62.1 mm

b. If out of specification, replace the cylin-der, piston and piston rings as a set.

c. Measure piston skirt diameter “P” with themicrometer.

a 5 mm from the bottom edge of the piston.

Piston size P

Standard 61.960 61.975

d. If out of specification, replace the pistonand piston rings as a set.

e. Calculate the piston-to-cylinder clear-ance with the following formula.

Piston-to-cylinderclearance

= cylinder bore “C” –Piston skirtdiameter “P”

Piston-to-cylinder clearance0.025 0.050 mm <Limit>: 0.07 mm

f. If out of specification, replace the cylin-der, piston and piston rings as a set.

EB404410

CHECKING THE PISTON RINGS1. Measure: piston ring side clearance 1

Out of specification Replace the pistonand piston rings as a set.

Before measuring the piston ring side clear-ance, eliminate any carbon deposits fromthe piston ring grooves and piston rings.

Piston ring side clearanceTop ring

0.020 0.075 mm<Limit>: 0.1 mm

2nd ring0.020 0.055 mm<Limit>: 0.1 mm

4-28

CYLINDER AND PISTON ENG

a

a

NOTE:

NOTE:

2. Install: piston ring 1

(into the cylinder)

Level the piston ring in the cylinder with thepiston crown as shown.

a 20 mm

3. Measure: piston ring end gap

Out of specification Replace the pistonring.

The oil ring expander spacer’s end gap can-not be measured. If the oil ring rail’s gap isexcessive, replace all three piston rings.

Piston ring end gapTop ring

0.15 0.30 mm<Limit>: 0.6 mm

2nd ring0.25 0.40 mm<Limit>: 0.7 mm

Oil ring0.1 0.35 mm

EB404421

CHECKING THE PISTON PINSThe following procedure applies to all of the pis-ton pins.

1. Check: piston pin

Blue discoloration/grooves Replace thepiston pin and then check the lubricationsystem.

2. Measure: piston pin outside diameter a

Out of specification Replace the pistonpin.

Piston pin outside diameter16.991 17.000 mm

4-29

CYLINDER AND PISTON ENG

b

1

2

4

5

3

a

NOTE:

NOTE:

3. Calculate: piston-pin-to-piston clearance

Out of specification Replace the pistonpin.

Piston-pin-to-piston clearance =Piston pin bore size b –Piston pin outside diameter a

Piston-pin-to-piston clearance0.011 0.013 mm<Limit>: 0.023 mm

EB404701

INSTALLING THE PISTON AND CYLINDERThe following procedure applies to all of the pis-tons and cylinders.

1. Install: top ring 1 2nd ring 2 lower oil ring rail 3 upper oil ring rail 4 oil ring expander 5

Be sure to install the piston rings so that themanufacturer’s marks or numbers face up.

2. Install: piston 1 piston pin 2 piston pin clip (New) 3

Apply engine oil onto the piston pin. Make sure that the “EX” mark a on the pis-

ton faces towards the exhaust side of theengine.

Before installing the piston pin clip, coverthe crankcase opening with a clean rag toprevent the clip from falling into the crank-case.

3. Install: gasket (New) 1 dowel pins 2

4. Lubricate: piston piston rings cylinder

(with the recommended lubricant)

Recommended lubricantEngine oil

4-30

1

22

d c

eab

CYLINDER AND PISTON ENG

NOTE:

5. Offset: piston ring end gapsa Top ringb Lower oil ring railc Upper oil ring raild 2nd ringee Oil ring expander

6. Install: cylinder 1 O-ring 2

First, install pistons #2 and #3. Pass the timing chain and timing chain

guide (exhaust side) through the timingchain cavity.

a. Install a piston ring compressor 1 to pis-ton #2 and #3.

b. Install pistons #2 and #3 onto the cylinder.c. Remove the piston ring compressor.d. Install the piston ring compressor 1 to

pistons #1 and #4.e. Install pistons #1 and #4 onto the cylinder.f. Remove the piston ring compressor.

Piston ring compressor:90890-04044

4-31

12 Nm (1.2 mkg)

10 Nm (1.0 mkg)

Order Job name/Part name Q’ty Remarks

12345

Removing the clutch coverDrain the engine oil

Clutch coverClutch cover gasketDowel pinDrive sprocket coverClutch cable

11211

Remove the parts in the order listed.Refer to “CHANGING THE ENGINE OIL”section in chapter 3.

For installation, reverse the removalprocedure.

CLUTCH ENG

CLUTCHCLUTCH COVER

4-32

8 Nm (0.8 mkg)

70 Nm (7.0 mkg)

Order Job name/Part name Q’ty Remarks

123456789

1011

Removing the clutchCompression springPressure plateShort clutch push rodO-ringBallLong clutch push rodFriction plateClutch plateFricition plate (large)Clutch spring plateNut

61111188111

Remove the parts in the order listed.

Refer to “INSTALLING THE CLUTCH”section.

Refer to “REMOVING/INSTALLING THECLUTCH” section.

CLUTCH ENG

CLUTCH

4-33

8 Nm (0.8 mkg)

70 Nm (7.0 mkg)

Order Job name/Part name Q’ty Remarks

121314

1516171819

Lock washerClutch bossThrust washer

SpacerBearingClutch housingThrust washerSpacer

111

11111

Refer to “REMOVING/INSTALLINGTHE CLUTCH” section.Refer to “INSTALLING THE CLUTCH”section.Refer to “REMOVING/INSTALLINGTHE CLUTCH” section.

Refer to “INSTALLING THE CLUTCH”seciton.

For installation, reverse the removalprocedure.

CLUTCH ENG

4-34

CLUTCH ENG

3

2

1

NOTE:

NOTE:

NOTE:

EB405100

REMOVING THE CLUTCH1. Straighten the lock washer tab.

2. Loosen: clutch boss nut 1

While holding the clutch boss 2 with the uni-versal clutch holder 3 , loosen the clutchboss nut.

Universal clutch holder 390890-04086

3. Remove: spacer 1 bearing 2

Insert two M6-mm bolts 3 into the spacerand then remove the spacer by pulling on thebolts.

EB405400

CHECKING THE FRICTION PLATESThe following procedure applies to all of the fric-tion plates.

1. Check: friction plate

Damage/wear Replace the frictionplates as a set.

2. Measure: friction plate thickness

Out of specification Replace the frictionplates as a set.

Measure the friction plate at four places.

Friction plate thickness2.94 3.06 mm

<Limit>: 2.8 mm

EB405410

CHECKING THE CLUTCH PLATESThe following procedure applies to all of theclutch plates.

1. Check: clutch plate

Damage Replace the clutch plates as aset.

2. Measure: clutch plate warpage

(with a surface plate and thickness gauge1 )Out of specification Replace the clutchplates as a set.

Clutch plate warpage limitLess than 0.1 mm

4-35

CLUTCH ENG

2

a

NOTE:

EB405420

CHECKING THE CLUTCH SPRINGSThe following procedure applies to all of theclutch springs.

1. Check: clutch spring

Damage Replace the clutch springs asa set.

2. Measure: clutch spring free length a

Out of specification Replace the clutchsprings as a set.

Clutch spring free length34.9 mm<Limit>: 34.3 mm

EB405430

CHECKING THE CLUTCH SPRING PLATE1. Check: clutch spring plate

Damage Replace.

2. Check: clutch spring plate seat

Damage Replace.

EB405440

CHECKING THE CLUTCH HOUSING1. Check: clutch housing dogs 1

Damage/pitting/wear Deburr the clutchhousing dogs or replace the clutch hous-ing.

Pitting on the clutch housing dogs will causeerratic clutch operation.

2. Check: bearing 2

Damage/wear Replace the clutchhousing.

4-36

CLUTCH ENG

1

12

NOTE:

NOTE:

EB405450

CHECKING THE CLUTCH BOSS1. Check: clutch boss splines 1

Damage/pitting/wear Replace theclutch boss.

Pitting on the clutch boss splines will causeerratic clutch operation.

EB405450

CHECKING THE PRESSURE PLATE1. Check: pressure plate 1

Cracks/damage Replace. bearing 2

Damage/wear Replace.

EB405480

CHECKING THE CLUTCH PUSH RODS1. Check: O-ring 1 short clutch push rod 2 long clutch push rod 3 ball 4

Cracks/damage/wear Replace the de-fective part(-s).

2. Measure: long clutch push rod bending limit 1

Out of specification Replace the longclutch push rod.

Long clutch push rod bendinglimit

0.3 mm

EB405701

INSTALLING THE CLUTCH1. Install: bearing 1 spacer 2

Install the spacer with the two screw holesfacing towards the clutch boss.

4-37

CLUTCH ENG

12

2

1

3

70 Nm (7.0 mkg)

NOTE:

8.0 Nm (0.8 mkg)

NOTE:

2. Tighten: clutch boss nut 1

While holding the clutch boss with the uni-versal clutch holder 2 , tighten the clutchboss nut.

Universal clutch holder90890-04086

3. Bend the lock washer 3 tab along a flat sideof the nut.

4. Lubricate: long clutch push rod 1 ball 2 short clutch push rod 3 O-ring 4

(with the recommended lubricant)

Recommended lubricantLithium soap base grease

5. Install: long clutch push rod ball short clutch push rod

(along with a new O-ring 4 )

6. Lubricate: friction plates 1 clutch plates 2

(with the recommended lubricant)

Recommended lubricantEngine oil

7. Install: friction plates 1 clutch plates 2

a. Install a friction plate and clutch plate.b. Install a clutch spring plate, friction plate

(large of inside dia.) and clutch plate.c. Install a friction plate and then alternate

between a clutch plate and a frictionplate.

8. Install: pressure plate 1 clutch springs 2 clutch spring bolts 3

When installing the clutch springs, alter-nate between long and short clutchsprings.

Tighten the clutch spring bolts in stagesand in a crisscross pattern.

4-38

CLUTCH ENG

12 Nm (1.2 mkg)

NOTE:

9. Install: clutch cover 1

Tighten the clutch cover bolts in stages andin a crisscross pattern.

4-39

Order Job name/Part name Q’ty Remarks

12345

Removing the shift shaftOil pumpDrive sprocket cover

CollarShift shaftShift lever springStopper leverSHift lever spring

11111

Remove the parts in the order listed.Refer to “OIL PUMP” section.Refer to “REMOVING THE ENGINE”section.

Refer to “INSTALLING THE SHIFTSHAFT” section.

For installation, reverse the removalprocedure.

SHIFT SHAFT ENG

SHIFT SHAFT

4-40

1

2

4

2

1

2

3

SHIFT SHAFT ENG

NOTE:

NOTE:

EB408400

CHECKING THE SHIFT SHAFT1. Check: shift shaft 1 shift lever 2

Bends/damage/wear Replace. shift lever spring 3 stopper lever spring 4

Damage/wear Replace.

EB408700

INSTALLING THE SHIFT SHAFT1. Install: stopper lever 1 stopper lever spring 2 shift shaft lever

Hook the ends of the stopper lever springonto the stopper lever and the crankcaseboss.

Mesh the stopper lever with the shift drumsegment assembly.

2. Install: shift shaft 1

Lubricate the oil seal lips with lithium soapbase grease.

Hook the end of the shift lever spring ontothe shift lever spring stopper 2 .

4-41

5 Nm (0.5 mkg)

10 Nm (1.0 mkg)

12 Nm (1.2 mkg)

Order Job name/Part name Q’ty Remarks

12345

Removing the stator coilSeatFuel tank

Stator/pickup coil leadCoverGenerator coverDowel pinStator coil

1/11121

Remove the parts in the order listed.Refer to “FRONT COWLING/SEAT/SIDE COVER/FUEL TANK” section in chapter 3.

For installation, reverse the removalprocedure.

AC MAGNETO AND STARTER CLUTCH ENG

AC MAGNETO AND STARTER CLUTCHSTATOR COIL

4-42

12 Nm (1.2 mkg)

80 Nm (8.0 mkg)

Order Job name/Part name Q’ty Remarks

1234

56789

1011

Removing the starter clutchGenerator coverStarter clutch coverDowel pinGasketStarter clutch assembly

Wood ruff keyStarter wheel gearShaft (Primary)Starter idle gear (primary)Shaft (Secondary)Starter idle gear (secondary)Shaft drive gear

1211

1111111

Remove the parts in the order listed.

Refer to “REMOVING/INSTALLING THESTARTER CLUTCH” section.

For installation, reverse the removalprocedure.

AC MAGNETO AND STARTER CLUTCH ENG

STARTER CLUTCH

4-43

130 Nm (13.0 mkg)

Order Job name/Part name Q’ty Remarks

123

Removing the generator roterBolt/washerRotorWoodruff key

1/111

Remove the parts in the order listed.Refer to “REMOVING/INSTALLINGTHE AC MAGNETO” section.

For installation, reverse the removalprocedure.

AC MAGNETO AND STARTER CLUTCH ENG

AC MAGNETO ROTOR

4-44

AC MAGNETO AND STARTER CLUTCH ENG

NOTE:

NOTE:

NOTE:

EB410100

REMOVING THE STARTER CLUTCH1. Remove: starter clutch cover 1

Loosen each bolt 1/4 of a turn at a time, instages and in a crisscross pattern. After all ofthe bolts are fully loosened, remove them.

2. Remove: starter clutch bolt 1

While holding the magneto rotor 2 withthe sheave holder 3 , remove the starterclutch bolt.

Sheave holder90890-01701

3. Remove: starter clutch 1

(with the flywheel puller set 2 )

Flywheel puller set90890-01362

REMOVING THE AC MAGNETO1. Remove: Bolt (AC magneto rotor) 1 Washer

While holding the AC magneto rotor 2 with asheave holder 3 , loosen the AC magnetorotor bolt 1 .

Sheave holder:90890-01701

4-45

2

1

3

AC MAGNETO AND STARTER CLUTCH ENG

NOTE:

2. Remove: AC magneto rotor 1 Woodruff key

Use a flywheel puller 2 to remove the ACmagneto rotor 1 .

Flywheel puller:90890-01362

EB410401

CHECKING THE STARTER CLUTCH1. Check: starter clutch idle gear 1 starter clutch drive gear 2 starter clutch gear 3

Burrs/chips/roughness/wear Replacethe defective part(-s).

2. Check: starter clutch operation

a. When turning the starter clutch drive gearclockwise a , the starter clutch and thestarter clutch drive gear should engage.If the starter clutch drive gear and starterclutch do not engage, the starter clutch isfaulty and must be replaced.

b. When turning the starter clutch drive gearcounterclockwise b , it should turn freely.If the starter clutch drive gear does notturn freely, the starter clutch is faulty andmust be replaced.

4-46

AC MAGNETO AND STARTER CLUTCH ENG

NOTE:

NOTE:

NOTE:

INSTALLING THE AC MAGNETO1. Install: Woodruff key 1 AC magneto rotor 2 Bolt (AC magneto rotor)

Clean the tapered portion of the crankshaftand the AC magneto rotor.

When installing the AC magneto rotor,make sure that the woodruff key is properlyseated in the key way of the crankshaft.

2. Tighten: Bolt (magneto rotor)

Bolt (AC magneto rotor):130 Nm (13.0 mkg)

While holding the AC magneto rotor 1 with asheave holder 2 tighten the AC magneto ro-tor bolt 3 .

Sheave holder:90890-01701

EB410710

INSTALLING THE STARTER CLUTCH1. Install: starter clutch 1

While holding the generator rotor 1 withthe sheave holder 2 , tighten the starterclutch bolt.

Sheave holder90890-01701

Starter clutch bolt80 Nm (8.0 mkg)

4-47

63 Nm (6.3 mkg)

10 Nm (1.0 mkg)

12 Nm (1.2 mkg)

43 Nm (4.3 mkg)

7 Nm (0.7 mkg)

Order Job name/Part name Q’ty Remarks

123456789

Removing the oil strainerEngine

Oil level warning switch/O-ringOil panDowel pinOil pan gasketRelief valve/O-ringOil strainerOil strainer housingOil bypass valveOil cooler/O-ring

1/1121

1/1111

1/1

Remove the parts in the order listed.Refer to “REMOVING THE ENGINE”section.

Refer to “INSTALLING THE OIL PAN” section.

Refer to “INSTALLING THE OILSTRAINER” section.

Refer to “INSTALLING THE ADAPTOR”section.For installation, reverse the removalprocedure.

OIL PAN AND OIL STRAINER ENG

OIL PAN AND OIL STRAINEROIL STRAINER

4-48

10 Nm (1.0 mkg)

Order Job name/Part name Q’ty Remarks

123

Removing the oil pumpClutchOil pump assemblyOil pump gasketDowel pin

111

Remove the parts in the order listed.Refer to “CLUTCH” section.

Refer to “INSTALLING THE OIL PUMP”section.

For installation, reverse the removalprocedure.

OIL PAN AND OIL STRAINER ENG

OIL PUMP

4-49

Order Job name/Part name Q’ty Remarks

1234567

Disassembling the oil pumpOil pump rotor housingDowel pinInner rotor/outer rotorDowel pinOil pump shaft assemblyOil pump coverWasher

12

1/11111

Disassembly the parts in the order listed.

Refer to “ASSEMBLING THE OIL PUMP”section.

For assembly, reverse the disassemblyprocedure.

7

OIL PAN AND OIL STRAINER ENG

4-50

OIL PAN AND OIL STRAINER ENG

NOTE:

EB411100

REMOVING THE OIL PAN1. Remove: oil level switch 1 oil pan 2 gasket dowel pins

Loosen each bolt 1/4 of a turn at a time, instages and in a crisscross pattern. After all ofthe bolts are fully loosened, remove them.

EB411401

CHECKING THE OIL PUMP1. Check: oil pump drive gear 1 oil pump driven gear 2 oil pump housing 3 oil pump housing cover 4

Cracks/damage/wear Replace the de-fective part(-s).

2. Measure: inner-rotor-to-outer-rotor-tip clearance A outer-rotor-to-oil-pump-housing clear-

ance B oil-pump-housing-to-inner-rotor-and-out-

er-rotor clearance COut of specification Replace the oilpump.

1 Inner rotor2 Outer rotor3 Oil pump housing

Inner-rotor-to-outer-rotor-tipclearance

0.03 0.09 mm Limit 0.15 mmOuter-rotor-to-oil-pump-housing clearance

0.03 0.08 mm Limit 0.15 mmOil-pump-housing-to-inner-rotor-and-outer-rotor clearance

0.03 0.08 mm Limit 0.15 mm

3. Check: oil pump operation

Unsmooth Repeat steps (1) and (2) orreplace the defective part(-s).

EB411410

CHECKING THE RELIEF VALVE1. Check: relief valve body 1 relief valve 2 spring 3 O-ring 4

Damage/wear Replace the defectivepart(-s).

4-51

OIL PAN AND OIL STRAINER ENG

b

a

4

6

57

67.0 Nm (0.7 mkg)

NOTE:

EB411430

CHECKING THE OIL STRAINER1. Check: oil strainer 1

Damage Replace.Contaminants Clean with engine oil.

EB411470

CHECKING THE OIL NOZZLE1. Check: oil nozzle 1 check ball 2

Damage/wear Replace the oil nozzle. O-ring 3

Damage/wear Replace. oil nozzle passage

Obstruction Blow out with compressedair.

EB411701

ASSEMBLING THE OIL PUMP1. Lubricate: inner rotor outer rotor oil pump shaft

(with the recommended lubricant)

Recommended lubricantEngine oil

2. Install: oil pump shaft 1

(to the oil pump cover 2 ) washer pin 3 inner rotor 4 outer rotor 5 dowel pin 6 oil pump housing 7

When installing the inner rotor, align the pina in the oil pump shaft with the groove b onthe inner rotor 1 .

3. Check: oil pump operation

Refer to “CHECKING THE OIL PUMP”.

4-52

OIL PAN AND OIL STRAINER ENG

d

c

b

10 Nm (1.0 mkg)

CAUTION:

NOTE:

NOTE:

10 Nm (10 mkg)

NOTE:

NOTE:

EB411710

INSTALLING THE OIL PUMPInstall:

oil pump 1

After tightening the bolts, make sure thatthe oil pump turns smoothly.

Align the projection a on the oil pump shaftwith the slot b on the water pump shaft.

Align the arrow c on the oil pump with thearrow d on the crankcase.

EB411720

INSTALLING THE OIL STRAINER1. Install: oil strainer housing 1

LOCKTITE

The arrow on the oil strainer housing mustpoint towards the front of the engine.

2. Install: oil strainer cover 1

The arrow on the oil strainer cover mustpoint towards the rear of the engine.

EB411730

INSTALLING THE OIL PAN1. Install: dowel pins gasket (New) oil pan 1 oil level switch 2 engine oil drain bolt

Always use new copper washers.

4-53

OIL PAN AND OIL STRAINER ENG

NOTE: Tighten the oil pan bolts in stages and in a

crisscross pattern. Lubricate the oil level switch’s O-ring with

engine oil.

Oil pan bolt12 Nm (1.2 mkg)

Oil level switch bolt7 Nm (0.7 mkg)

4-54

10 Nm (1.0 mkg)

24 Nm (2.4 mkg)

24 Nm (2.4 mkg)

12 Nm (1.2 mkg)

Order Job name/Part name Q’ty Remarks

123

Disassembling the crankcaseEngine

CamshaftCylinder headCylinder, piston

ClutchOil pumpShift shaftMagneto rotorStarter clutchOil strainer

Water pump

Oil seal stopper plateNeutral switch leadNeutral switch

111

Disassembly the parts in the order listed.Refer to “REMOVING THE ENGINE”section.Refer to “CAMSHAFT” section.Refer to “CYLINDER HEAD” section.Refer to “CYLINDER AND PISTON”section.Refer to “CLUTCH” section in chapter 4.Refer to “OIL PUMP” section.Refer to “SHIFT SHAFT” section.Refer to “AC MAGNETO AND STARTERCLUTCH section.Refer to “OIL PAN AND OIL STRAINER”section.

Refer to “WATER PUMP” section inchapter 5.

CRANKCASE ENG

CRANKCASE

4-55

10 Nm (1.0 mkg)

24 Nm (2.4 mkg)

24 Nm (2.4 mkg)

12 Nm (1.2 mkg)

Order Job name/Part name Q’ty Remarks

456789

O-ringUpper crankcaseDowel pinOil sealOil jetO-ring

111111

Refer to “DISASSEMBLING/ASSEMBLING THE CRANKCASE”section.

For assembly, reverse the disassemblyprocedure.

CRANKCASE ENG

4-56

A

B

CRANKCASE ENG

NOTE:

CAUTION:

NOTE:

EB412100

DISASSEMBLING THE CRANKCASE1. Remove: crankcase bolts 1 15A Upper crankcase

Loosen each bolt 1/4 of a turn at a time, instages and in a crisscross pattern. After allof the bolts are fully loosened, removethem.

Loosen the bolts in decreasing numericalorder (refer to the numbers in the illustra-tion).

The numbers embossed on the crankcaseindicate the crankcase tightening se-quence.

2. Place the engine upside down.

3. Remove: lower crankcase bolts 1 20B lower crankcase

4. Remove: lower crankcase

Tap on one side of the crankcase with asoft-face hammer. Tap only on reinforcedportions of the crankcase, not on thecrankcase mating surfaces. Work slowlyand carefully and make sure that thecrankcase halves separate evenly.

5. Remove: dowel pins oil jet

6. Remove: crankshaft journal lower bearing

(from the lower crankcase)

Identify the position of each crankshaft jour-nal lower bearing so that it can be reinstalledin its original place.

EB412420

CHECKING THE CRANKCASE1. Thoroughly wash the crankcase halves in a

mild solvent.

2. Thoroughly clean all the gasket surfacesand crankcase mating surfaces.

3. Check: crankcase

Cracks/damage Replace. oil delivery passages

Obstruction Blow out with compressedair.

4-57

CRANKCASE ENG

2

b

a

NOTE:

NOTE:

CAUTION:

EB412742

ASSEMBLING THE CRANKCASE1. Lubricate: crankshaft journal bearings

(with the recommended lubricant)

Recommended lubricantEngine oil

2. Apply: sealant

(onto the crankcase mating surfaces)

Yamaha bond No. 121590890-85505

Do not allow any sealant to come into con-tact with the oil gallery or crankshaft journalbearings. Do not apply sealant to within 2 3 mm of the crankshaft journal bearings.

3. Install: dowel pin

4. Install: crankshaft journal lower bearings 1

(into the lower crankcase)

Align the projections a on the crankshaftjournal lower bearings with the notches bin the crankcase.

Install each crankshaft journal lower bear-ing in its original place.

5. Set the shift drum assembly and transmis-sion gears in the neutral position.

6. Install: upper crankcase 1

(onto the lower crankcase 2 )

Before tightening the crankcase bolts,make sure that the transmission gearsshift correctly when the shift drum as-sembly is turned by hand.

4-58

CRANKCASE ENG

A

B

NOTE:

7. Install: upper crankcase bolts lower crankcase bolts

Lubricate the bolt threads with engine oil. Tighten the bolts in increasing numerical

order. Install washers on bolts 1 12 . Install the cable holder on bolt #35.

A Upper crankcaseB Lower crankcase

M8 bolt24 Nm (2.4 mkg)

M6 bolt12 Nm (1.2 mkg)

4-59

10 Nm (1.0 mkg)

Order Job name/Part name Q’ty Remarks

12345

Removing the crankshaftDisassembly the crankcaseTiming chain guide (intake side)Crankshaft assemblyOil sealTiming chainCrankshaft journal bearing

1111

12

Remove the parts in the order listed.Refer to “CRANKCASE” section.

Refer to “REMOVING/INSTALLING THECRANKSHAFT ASSEMBLY” section.

For installation, reverse the removalprocedure.

CRANKSHAFT ENG

CRANKSHAFT

4-60

15 Nm (1.5 mkg) + 90

Order Job name/Part name Q’ty Remarks

12345

Removing the connecting rodNutConnecting rod boltConnecting rodConnecting rod capConnecting rod big end bearing

88448

Remove the parts in the order listed.Refer to “INSTALLING THECONNECTING RODS” section.

Refer to “REMOVING/INSTALLINGTHE CONNECTING RODS” section.

For installation, reverse the removalprocedure.

CRANKSHAFT ENG

CONNECTING ROD

4-61

1

2

12

CRANKSHAFT ENG

NOTE:

NOTE:

EB412110

REMOVING THE CRANKSHAFT ASSEMBLY1. Remove: crankshaft assembly 1 crankshaft journal upper bearing 2

(from the upper crankcase) timing chain guide (intake side)

Identify the position of each crankshaft jour-nal upper bearing so that it can be reinstalledin its original place.

EB412121

REMOVING THE CONNECTING RODS1. Remove: connecting rods 1 big end bearings 2

Identify the position of each big end bearingso that it can be reinstalled in its originalplace.

EB412401

CHECKING THE CRANKSHAFT ANDCONNECTING RODS

1. Measure: crankshaft runout

Out of specification Replace the crank-shaft.

Crankshaft runoutLess than 0.03 mm

2. Check: crankshaft journal surfaces crankshaft pin surfaces bearing surfaces

Scratches/wear Replace the crank-shaft.

3. Measure: crankshaft-journal-to-crankshaft-journal-

bearing clearanceOut of specification Replace the crank-shaft journal bearings.

4-62

CRANKSHAFT ENG

2

b

a

b

a

CAUTION:

NOTE:

NOTE:

NOTE:

Crankshaft-journal-to-crank-shaft-journal-bearing clearance

0.025 0.043 mmLimit 0.08 mm

Do not interchange the crankshaft jour-nal bearings. To obtain the correct crank-shaft journal-to-crankshaft-journal-bear-ing clearance and prevent enginedamage, the crankshaft journal bearingsmust be installed in their original posi-tion.

a. Clean the crankshaft journal bearings,crankshaft journals, and bearing portionsof the crankcase.

b. Place the upper crankcase upside downon a bench.

c. Install the crankshaft journal upper bear-ings 1 and the crankshaft into the uppercrankcase.

Align the projections a of the crankshaftjournal upper bearings with the notches b inthe crankcase.

d. Put a piece of Plastigauge 2 on eachcrankshaft journal.

Do not put the Plastigauge over the oil holein the crankshaft journal.

e. Install the crankshaft journal lower bear-ings into the lower crankcase and as-semble the crankcase halves.

Align the projections a of the crankshaftjournal lower bearings with the notches bin the crankcase.

Do not move the crankshaft until the clear-ance measurement has been completed.

4-63

CRANKSHAFT ENG

A

B

C

NOTE:

NOTE:

f. Tighten the bolts to specification in thetightening sequence cast on the crank-case.

Crankcase boltM8:24 Nm (2.4 mkg)M6:12 Nm (1.2 mkg)

A Upper crankcaseB Lower crankcase

Lubricate the crankcase bolt threads (M8)and (M6) with engine oil.

g. Remove the lower crankcase and thecrankshaft journal lower bearings.

h. Measure the compressed Plastigauge

width C on each crankshaft journal.If the clearance is out of specification, se-lect replacement crankshaft journal bear-ings.

4. Select: Crankshaft journal bearings (J1 J6)

The numbers A stamped into the crank-shaft web and the numbers 1 stampedinto the lower crankcase are used to deter-mine the replacement crankshaft journalbearing sizes.

“J1 J6” refer to the bearings shown inthe crankshaft illustration.

If “J1 J6” are the same, use the samesize for all of the bearings.

4-64

CRANKSHAFT ENG

A

1

1

b

a

1

1

CAUTION:

NOTE:

For example, if the crankcase “J1” andcrankshaft web “J1” numbers are “6” and “2”respectively, then the bearing size for “J1” is:

Bearing size for J1:J1 (crankcase) – J1 (crankshaft web) +1 = 6 – 2 + 1 = 5 (yellow)

CRANKSHAFTJOURNALBEARINGCOLOR CODE 1

1 2 3 4 5 6

blue black brown green yellow pink

5. Measure: crankshaft-pin-to-big-end-bearing clear-

anceOut of specification Replace the big endbearings.

Crankshaft-pin-to-big-end-bearing clearance

0.043 0.066 mmLimit 0.08 mm

The following procedure applies to all ofthe connecting rods.

Do not interchange the big end bearingsand connecting rods. To obtain the cor-rect crankshaft-pin-to-big-end-bearingclearance and prevent engine damage,the big end bearings must be installed intheir original positions.

a. Clean the big end bearings, crankshaftpins, and bearing portions of the connect-ing rods.

b. Install the big end upper bearing into theconnecting rod and the big end lowerbearing into the connecting rod cap.

Align the projections a on the big end bear-ings with the notches b in the connectingrod and connecting rod cap.

c. Put a piece of Plastigauge 1 on thecrankshaft pin.

4-65

c

e

A

CRANKSHAFT ENG

NOTE:

NOTE:

Do not move the connecting rod or crank-shaft until the clearance measurement hasbeen completed.

Apply molybdenum disulfide grease ontothe bolts, threads, and nut seats.

Make sure that the “Y” mark c on the con-necting rod faces towards the left side ofthe crankshaft.

Make sure that the characters d on boththe connecting rod and connecting rod capare aligned.

e. Tighten the connecting rod nuts.

Nut (connecting rod):15 Nm (1.5 mkg, 11 ft lb) +(turn the nut another 90 )

Refer to “INSTALLING THE CONNECT-ING RODS”.

f. Remove the connecting rod and big endbearings.Refer to “REMOVING THE CONNECT-ING RODS”.

g. Measure the compressed Plastigauge

width e on the crankshaft pin.If the clearance is out of specification, se-lect replacement big end bearings.

6. Select: big end bearings (P1 P4)

The numbers A stamped into the crank-shaft web and the numbers 1 on the con-necting rods are used to determine the re-placement big end bearing sizes.

“P1” “P4” refer to the bearings shown inthe crankshaft illustration.

4-66

CRANKSHAFT ENG

2

2

3

2

2

NOTE:

For example, if the connecting rod “P1” andthe crankshaft web “P1” numbers are “4”and “1” respectively, then the bearing sizefor “P1” is:

Bearing size for P 1:P1 (connecting rod) – P1 (crankshaft-web) = 4 – 1 = 3 (brown)

BIG ENDBEARINGCOLOR CODE

1 2 3 4

blue black brown green

EB412700

INSTALLING THE CONNECTING RODS1. Lubricate: bolt threads nut seats

(with the recommended lubricant)

Recommended lubricantMolybdenum disulfide grease

2. Lubricate: crankshaft pins big end bearings connecting rod inner surface

(with the recommended lubricant)

Recommended lubricantEngine oil

3. Install: big end bearings 1 connecting rods 2 connecting rod caps 3

(onto the crankshaft pins)

Align the projections on the big end bear-ings with the notches in the connectingrods and connecting rod caps.

Be sure to reinstall each big end bearing inits original place.

Make sure that the “Y” marks a on theconnecting rods face towards the left sideof the crankshaft.

Make sure that the characters on both theconnecting rod and connecting rod cap arealigned.

4-67

CRANKSHAFT ENG

CAUTION:

CAUTION:

NOTE:

4. Align: bolt heads 1

(with the connecting rod caps)

5. Tighten: Nuts (connecting rod)

Nut (connecting rod):15 Nm (1.5 mkg) +(turn the nut another 90 )

a. Replace the connecting rod bolts andnuts with new ones.

Tighten the connecting rod bolts usingthe plastic-region tightening angle meth-od.Always install new bolts and nuts.

b. Clean the connecting rod bolts and nuts.c. Tighten the connecting rod nuts.d. Put a mark 1 on the corner of the con-

necting rod nut 2 and the connecting rod3 .

e. Tighten the nut further to reach the speci-fied angle (90).

When the nut is tightened more than thespecified angle, do not loosen the nutand then retighten it.Replace the bolt with a new one and per-form the procedure again.

Do not use a torque wrench to tightenthe nut to the specified angle.

Tighten the nut until it is at the specifiedangles.

When using a hexagonal nut, note that theangle from one corner to another is 60.

4-68

CRANKSHAFT ENG

b

aNOTE:

NOTE:

10 Nm (1.0 mkg)

EB412720

INSTALLING THE CRANKSHAFT1. Install: crankshaft journal upper bearings 1

(into the upper crankcase)

Align the projections a on the crankshaftjournal upper bearings with the notches bin the crankcase.

Be sure to install each crankshaft journalupper bearing in its original place.

2. Install: timing chain 1

(onto the crankshaft sprocket) crankshaft assembly 2

Pass the timing chain through the timingchain cavity.

To prevent the timing chain from falling intothe crankcase, fasten it with a wire.

3. Install: timing chain guide 1

4-69

Order Job name/Part name Q’ty Remarks

123456789

1011

Removing the transmissionDisassembly the crankcaseMain axle assemblyCirclipBearingBearingDrive axle assemblyCirclipNozzleBearingPlate washerOil seal/collarBearing

111111111

1/11

Remove the parts in the order listed.Refer to “CRANKCASE” section.Refer to “INSTALLING THETRANSMISSION” section.

Refer to “INSTALLING THETRANSMISSION” section.

For installation, reverse the removalprocedure.

TRANSMISSION ENG

TRANSMISSION

4-70

Order Job name/Part name Q’ty Remarks

Disassembling the transmission1st wheel gear5th wheel gearCirclipWasher4th wheel gear3rd wheel gear6th wheel gear2nd wheel gearWasherCirclipDrive axle2nd pinion gear6th pinion gear

1111111111111

Disassembly the parts in the order listed.

10

123456789

111213

TRANSMISSION ENG

4-71

Order Job name/Part name Q’ty Remarks

3rd/4th pinion gearCirclipWasher5thMain axle

11111

For assembly, reverse the disassemblyprocedure.

1415161718

TRANSMISSION ENG

4-72

TRANSMISSION ENGEB413422

CHECKING THE TRANSMISSION1. Measure: main axle runout

(with a centering device and dial gauge1 )Out of specification Replace the mainaxle.

Main axle runout limit0.02 mm

2. Measure: drive axle runout

(with a centering device and dial gauge1 )Out of specification Replace the driveaxle.

Drive axle runout limit0.02 mm

3. Check: transmission gears

Blue discoloration/pitting/wear Re-place the defective gear(-s).

transmission gear dogsCracks/damage/rounded edges Re-place the defective gear(-s).

4. Check: transmission gear engagement

(each pinion gear to its respective wheelgear)Incorrect Reassemble the transmissionaxle assemblies.

5. Check: transmission gear movement

Rough movement Replace the defec-tive part(-s).

Transmission gear reassembling point:Press the 2nd pinion gear 1 into the mainaxle 2 , as shown in the illustration.

4-73

TRANSMISSION ENG

NOTE:

NOTE:

NOTE:

EB413710

INSTALLING THE TRANSMISSION1. Install: oil baffle plate 1 crankcase breather hose 2

Insert the metal clamp 3 on the crankcasebreather hose into the slots 4 in the crank-case.

2. Install: main axle assembly 1 drive axle assembly 2 oil seals circlips lock washer

Make sure that the drive axle bearing cir-clips 3 are inserted into the grooves 4 inthe upper crankcase.

The main axle bearing pin 5 must face to-wards the front of the crankcase and thedrive axle bearing pin 6 must face to-wards the rear of the crankcase.

3. Check: transmission

Rough movement Repair.

Oil each gear, shaft, and bearing thoroughly.

4-74

10 Nm (1.0 mkg)

10 Nm (1.0 mkg)

Remove the parts in the order listed.

Refer to “CRANKCASE” section.Refer to “TRANSMISSION” section.

Refer to “INSTALLING THE SHIFTFORKS AND SHIFT DRUM” section.

For installation, reverse the removalprocedure.

Order Job name/Part name Q’ty Remarks

12345678

Removing the shift drum andshift forksDisassembly the crankcaseTransmissionShift fork guide bar retainerShift drum retainerShift fork guide bar 1Shift fork CShift fork guide bar 2Shift fork LShift fork RShift drum

11111111

SHIFT DRUM AND SHIFT FORKS ENG

SHIFT DRUM AND SHIFT FORKS

4-75

SHIFT DRUM AND SHIFT FORKS ENG

1

2

1

2

EB413400

CHECKING THE SHIFT FORKSThe following procedure applies to all of the shiftforks and related components.

1. Check: shift fork cam follower 1 shift fork pawl 2

Bends/damage/scoring/wear Replacethe shift fork.

2. Check: shift fork guide bar

Roll the shift fork guide bar on a flat sur-face.Bend Replace.

Do not attempt to straighten a bent shiftfork guide bar.

3. Check: shift fork movement

(on the shift fork guide bar)Rough movement Replace the shiftforks and shift fork guide bar as a set.

EB413410

CHECKING THE SHIFT DRUM ASSEMBLY1. Check: shift drum grooves

Damage/scratches/wear Replace theshift drum.

shift drum segment 1Damage/wear Replace.

shift drum bearing 2Damage/pitting Replace.

EB413701

INSTALLING THE SHIFT FORKS AND SHIFTDRUM ASSEMBLY

1. Install: shift drum assembly 1

4-76

SHIFT DRUM AND SHIFT FORKS ENG

1

1

2 3

NOTE:

10 Nm (1.0 mkg)

10 Nm (1.0 mkg)r

2. Install: shift fork guide bars 1 shift fork “L” 2 shift fork “C” 3 shift fork “R” 4

The embossed marks on the shift forksshould face towards the left side of the en-gine and be in the following sequence: “L”,“C”, “R”.

The grooved side of the shift fork guide barshould face towards the right side of theengine.

3. Install: shift drum retainer 1

LOCKTITE

shift fork guide bar retainer 2

COOL

5

COOL

CHAPTER 5COOLING SYSTEM

RADIATOR 5-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CHECKING THE RADIATOR 5-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . INSTALLING THE RADIATOR 5-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

THERMOSTAT 5-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CHECKING THE THERMOSTAT 5-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ASSEMBLING THE THERMOSTAT 5-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . INSTALLING THE THERMOSTAT 5-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

WATER PUMP 5-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . REMOVING THE WATER PUMP 5-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CHECKING THE WATER PUMP 5-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . INSTALLING THE WATER PUMP 5-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

COOL

5-1

7 Nm (0.7 mkg)

Order Job name/Part name Q’ty Remarks

12345

Removing the radiatorSeatFuel tank

Drain the coolant

Fan motor leadsRadiator outlet hoseRadiator inlet hoseRadiatorFan

11111

Remove the parts in the order listed.Refer to “FRONT COWLING/SEAT/SIDECOVER/FUEL TANK” section in chapter3.Refer to “CHANGING THE COOLANT”section in chapter 3.

Disconnect the coupler.

For installation, reverse the removalprocedure.

NOTE:

RADIATOR COOL

COOLING SYSTEMRADIATOR

5-2

RADIATOR COOL

NOTE:

EB500010

CHECKING THE RADIATOR1. Check: radiator fins

Obstruction Clean.Apply compressed air to the rear of the ra-diator.Damage Repair or replace.

Straighten any flattened fins with a thin, flat-head screwdriver.

2. Check: radiator hoses radiator pipes

Cracks/damage Replace.

3. Measure: radiator cap opening pressure

Below the specified pressure Replacethe radiator cap.

Radiator cap opening pressure95 125 kPa(0.95 1.25 kg/cm 2)

a. Install the radiator cap tester 1 andadapter 2 to the radiator cap 3 .

Radiator cap tester90890-01325

Adapter90890-01352

b. Apply the specified pressure for ten se-conds and make sure that there is no dropin pressure.

4. Check: radiator fan

Damage Replace.Malfunction Check and repair.Refer to “COOLING SYSTEM” in chapter8.

5-3

RADIATOR COOLEB500020

INSTALLING THE RADIATOR1. Fill: cooling system

(with the specified amount of the recom-mended coolant)Refer to “CHANGING THE COOLANT” inchapter 3.

2. Check: cooling system

Leaks Repair or replace any faulty part.

a. Attach the radiator cap tester 1 to theradiator.

Radiator cap tester:90890-01325

b. Apply 100 kPa (1.0 kg/cm2) of pressure.c. Measure the indicated pressure with the

gauge.

5-4

10 Nm (1.0 mkg)

Order Job name/Part name Q’ty Remarks

1

23456789

Removing the thermostatSeatFuel tank

Drain the coolant

Thermo switch lead(engine temperature)Thermo switch lead (fan motor)Reservoir tank hoseCarburetor inlet hoseEngine outlet hoseEngine outlet hoseRadiator inlet hoseThermostat housingGround read

1

11111111

Remove the parts in the order listed.Refer to “FRONT COWLING/SEAT/SIDE COVER/FUEL TANK” section in chapter 3.

Refer to “CHANGING THE COOLANT”section in chapter 3.

Disconnect the lead.

Disconnect the coupler.

For installation, reverse the removal procedure.

NOTE:

NOTE:

THERMOSTAT COOL

THERMOSTAT

5-5

23 Nm (2.3 mkg)

8 Nm (0.8 mkg)

10 Nm (1.0 mkg)

Order Job name/Part name Q’ty Remarks

Disassembling the thermostatThermo switch (fan motor)Thermo switch (engine temperature)Thermostat housing coverO-ringThermostatThermostat housing

111111

Disassembly the parts in the order listed.

Refer to “ASSEMBLING THETHERMOSTAT” section.

For assembly, reverse the disassemblyprocedure.

123456

THERMOSTAT COOL

5-6

THERMOSTAT COOL

1

1

3

4

2

80.583.5 95C

8 mm

NOTE:

EB502021

CHECKING THE THERMOSTAT1. Check: thermostat 1

Does not open at 80.5 83.5C Replace.

a. Suspend the thermostat in a containerfilled with water.

b. Slowly heat the water.c. Place a thermometer in the water.d. While stirring the water, observe the ther-

mometer’s indicated temperature.

1 Thermometer2 Water3 Thermostat4 ContainerA ClosesB Opens

If the accuracy of the thermostat is in doubt,replace it. A faulty thermostat could causeserious overheating or overcooling.

2. Check: thermostat housing cover 1 thermostat housing 2

Cracks/damage Replace.

3. Measure: radiator cap opening pressure

Below the specified pressure Replacethe radiator cap.Refer to “CHECKING THE RADIATOR”.

4. Check: thermostat housing cover O-ring thermostat inlet pipe O-ring thermostat inlet pipe water pump outlet pipe

Damage Replace.

5-7

THERMOSTAT COOL

NOTE:

23 Nm (2.3 mkg)

8 Nm (0.8 mkg)

CAUTION:

EB502030

ASSEMBLING THE THERMOSTAT1. Install: thermostat housing 1 thermostat 2 O-ring (New) 3 thermostat housing cover 4

Install the thermostat with its breather holea facing up.

2. Install: thermo switch (fan motor) 1

thermo switch (engine temperature) 2

Use extreme care when handling thethermo switch and temperature sender.Replace any part that was dropped orsubjected to a strong impact.

EB502040

INSTALLING THE THERMOSTAT1. Fill: cooling system

(with the specified amount of the recom-mended coolant)Refer to “CHANGING THE COOLANT” inchapter 3.

2. Check: cooling system

Leaks Repair or replace any faulty part.

3. Measure: radiator cap opening pressure

Below the specified pressure Replacethe radiator cap.Refer to “CHECKING THE RADIATOR”.

5-8

10 Nm (1.0 mkg)

10 Nm (1.0 mkg)

Order Job name/Part name Q’ty Remarks

1234567

Removing the water pumpDrain the coolant

Shift arm, drive chain cover

Radiator outlet hoseWater pump outlet hoseWater pump outlet pipeWater pump housing coverO-ringWater pump assemblyO-ring

1111111

Remove the parts in the order listed.Refer to “CHANGING THECOOLANT” section in chapter 3.Refer to “REMOVING THE ENGINE”section in chapter 4.

Refer to “REMOVING/INSTALLING THEWATER PUMP” section.

For installation, reverse the removalprocedure.

WATER PUMP COOL

WATER PUMP

5-9

WATER PUMP COOL

1

2

NOTE:

EB503020

REMOVING THE WATER PUMP1. Remove: water pump housing 1

Tap out the water pump seal from the insideof the water pump housing.

EB503032

CHECKING THE WATER PUMP1. Check: water pump housing cover water pump housing 1 impeller 2

2. Check: water pump seal 1 oil seal 2

Cracks/damage/wear Replace.

3. Check: bearing 1

Roughness Replace.

4. Check: water pump inlet pipe radiator outlet hose

Cracks/damage/wear Replace.

EB503052

INSTALLING THE WATER PUMP1. Install: water pump housing

Always use a new O-ring

5-10

WATER PUMP COOL

ab

NOTE:

NOTE:

10 Nm (1.0 mkg)

10 Nm (1.0 mkg)

NOTE:

Align the slot a on the impeller shaft withthe projection b on the oil pump shaft.

Before installing the water pump housing,apply a thin coat of lithium soap basegrease onto the O-ring.

2. Install: water pump housing cover 1 water pump outlet pipe 2

Always use a new gasket and O-rings.

Before installing the water pump outlet pipe,apply a thin coat of lithium soap base greaseonto the O-rings.

Water pump housing cover bolt10 Nm (1.0 mkg)

3. Install: gasket dowel pins drive chain sprocket cover 1

4. Install: shift arm 1

Align the slot a on the shift arm 1 with thepunch mark b on the shift shaft 2 .

5. Fill: cooling system

(with the specified amount of the recom-mended coolant)Refer to “CHANGING THE COOLANT” inchapter 3.

6. Check: cooling system

Leaks Repair or replace any faulty part.

7. Measure: radiator cap opening pressure

Below the specified pressure Replacethe radiator cap.Refer to “CHECKING THE RADIATOR”.

CARB

6

CARB

CHAPTER 6CARBURETORS

CARBURETORS 6-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . AIR FILTER CASE 6-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CARBURETORS 6-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CHECKING THE CARBURETORS 6-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ASSEMBLING THE CARBURETORS 6-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . INSTALLING THE CARBURETORS 6-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . MEASURING AND ADJUSTING THE FUEL LEVEL 6-9. . . . . . . . . . . . . . . . . . . . . . . . CHECKING AND ADJUSTING THE THROTTLE POSITIONSENSOR 6-10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

CARB

6-1

Order Job name/Part name Q’ty Remarks

12345

Removing the air filter caseSeat, fueltank and sidecovers

Drain the coolant

Air filter case (left /right)Battery negative leadBattery positive leadBatteryStay

1/11111

Remove the parts in the order listed.Refer to “FRONT COWLING/SEAT/SIDE COVER/FUEL TANK” section in chapter 3.Refer to “CHANGING THE COOLANT” section.

For installation, reverse the removalprocedure.

CARBURETORS CARB

CARBURETORSCARBURETORSAIR FILTER CASE

6-2

CARBURETORS CARB

Order Job name/Part name Q’ty Remarks

123456

Removing the carburetorsThrottle position sensor leadAir filter joint screwCarburetors joint screwCarburetor inlet/outlet hoseCarburetors assemblyStarter cableThrottle cable

44

1/1112

Remove the parts in the order listed.

Disconnect the coupler.

For installation, reverse the removalprocedure.

NOTE:

CARBURETORS

6-3

CARBURETORS CARB

Order Job name/Part name Q’ty Remarks

Disassembling the carburetorsStarter plunger linkCarburetors assemblyVacuum chamber coverPiston valve springPiston valveNeedle kitFloat chamberFloat chamber gasketFloat pinFloatNeedle valve assemblyMain jet

141111111111

Disassembly the parts in the order listed.

#1, #2, #3, #4

Refer to “ASSEMBLING THE CARBURETERS” section.

123456789101112

6-4

CARBURETORS CARB

Order Job name/Part name Q’ty Remarks

Main jet holderNeedle jetPilot jetPilot screw set

Starter plunger kit

1111

1

Refer to “ASSEMBLING THE CARBURETORS” section.

For assembly, reverse the disassemblyprocedure.

13141516

17

6-5

CARBURETORS CARBEB600031

CHECKING THE CARBURETORSThe following procedure applies to all of the car-buretors.

1. Check: carburetor body float chamber main jet holder

Cracks/damage Replace.

2. Check: fuel passages

Obstruction Clean.

a. Wash the carburetor in a petroleumbasedsolvent. Do not use any caustic-carbure-tor-cleaning solution.

b. Blow out all of the passages and jets withcompressed air.

3. Check: float chamber body 1

Dirt Clean.

4. Check: float chamber rubber gasket 2

Cracks/damage/wear Replace.

5. Check: float 1

Damage Replace.

6. Check: needle valve 1 needle valve seat 2

Damage/obstruction/wear Replace theneedle valve, needle valve seat and O-ringas a set.

7. Check: O-ring 3

Damage/wear Replace the needlevalve, needle valve seat and O-ring as aset.

6-6

CARBURETORS CARB

8. Check: piston valve 1

Damage/scratches/wear Replace. rubber diaphragm 2

Cracks/tears Replace.

9. Check: vacuum chamber cover 1 piston valve spring 2 jet needle holder 3

Cracks/damage Replace.

10. Check: jet needle kit 1 needle jet 2 main jet 3 pilot jet 4 pilot screw 5 starter plunger 6

Bends/damage/wear Replace.Obstruction Clean.Blow out the jets with compressed air.

11. Check: piston valve movement

Insert the piston valve into the carburetorbody and move it up and down.Tightness Replace the piston valve.

12. Check: fuel feed pipes hose joint

Cracks/damage Replace.Obstruction Clean.Blow out the pipes with compressed air.

13. Check: fuel hoses

Cracks/damage/wear Replace.Obstruction Clean.Blow out the hoses with compressed air.

6-7

CARBURETORS CARB

CAUTION:

NOTE:

EB600041

ASSEMBLING THE CARBURETORSThe following procedure applies to all of the car-buretors.

Before assembling the carburetors,wash all of the parts in a petroleum-based solvent.

Always use a new gasket.

1. Install: O-ring (New) washer pilot screw spring pilot screw 1

Pilot screw2 turns out

2. Install: jet needle 1 washer 2 (0.5 mm) ring 3 clip 4 washer 5 (0.5 mm)

Standard clip position:No. 3 Groove

3. Install: piston valve jet needle kit 1 jet needle holder 2 piston valve spring 3 vacuum chamber cover

Insert the end of the piston valve springonto the spring guide on the vacuumchamber cover.

Align the tab on the piston valve dia-phragm with the recess in the carburetorbody.

6-8

CARBURETORS CARB

NOTE:

4. Install: fuel feed joints 1 hose joints 2 spacer 3 connecting bolt 4 starter plunger link 5 throttle cable holder 6 spacer 7 connecting bolt 8

Do not tighten the connecting bolts yet. Install the throttle arm 9 onto carburetors

#1, #2, and #4 between the spring 10 andsynchronizing screw 11 .

Install the starter plunger link onto eachstarter plunger.

Place the carburetor assembly on a sur-face plate with the intake manifold sidedown. Then, tighten the connecting boltswhile pushing down the carburetor assem-bly with an even force.

After tightening the connecting bolts,check that the throttle cable lever andstarter plunger link operate smoothly.

EB600051

INSTALLING THE CARBURETORS1. Adjust: carburetor synchronization

Refer to “SYNCHRONIZING THE CAR-BURETORS” in chapter 3.

2. Adjust: engine idling speed

Engine idling speed1,150 1,250 r/min

Refer to “ADJUSTING THE ENGINE ID-LING SPEED” in chapter 3.

3. Adjust: throttle cable free play

Throttle cable free play (at theflange of the throttle grip)

3 5 mm

Refer to “ADJUSTING THE THROTTLECABLE FREE PLAY” in chapter 3.

6-9

CARBURETORS CARB

23

NOTE:

EB600062

MEASURING AND ADJUSTING THE FUELLEVEL

1. Measure: fuel level a

Out of specification Adjust

Fuel level (above the floatchamber mating surface)

4.5 mm

a. Stand the motorcycle on a level surface.b. Place the motorcycle on a suitable stand

to ensure that the motorcycle is standingstraight up.

c. Install the fuel level gauge 1 to the fueldrain pipe 2 .

Fuel level gauge90890-01312

d. Loosen the fuel drain screw 3 .e. Hold the fuel level gauge vertically next to

the float chamber.f. Measure the fuel level a .

Fuel level readings should be equal on bothsides of the carburetor assembly.

2. Adjust: fuel level

a. Remove the carburetor assembly.b. Check the needle valve seat and needle

valve.c. If either is worn, replace them as a set.d. If both are fine, adjust the float level by

slightly bending the float tang 1 .e. Install the carburetor assembly.f. Measure the fuel level again.g. Repeat steps (a) to (f) until the fuel level is

within specification.

6-10

CARBURETORS CARB

NOTE:

1

2

3

2

EB600070

CHECKING AND ADJUSTING THETHROTTLE POSITION SENSOR

Before adjusting the throttle position sen-sor, the engine idling speed should beproperly adjusted.

When installing the throttle position sen-sor, adjust its angle according to the RPMwhich is displayed on the tachometer.Refer to the adjustment procedure below.

1. Check: throttle position sensor

a. Disconnect the throttle position sensorcoupler.

b. Connect the pocket tester (Ω 1k) to thethrottle position sensor.

Tester positive lead BLUE Tester negative lead BLACK/BLUE

c. Check the throttle position sensor maxi-mum resistance.Out of specification Replace thethrottle position sensor.

Throttle position sensormaximum resistance

3.5 6.5 kΩ at 20C(BLUE — BLACK/BLUE)

d. Install the throttle position sensor onto thecarburetor.

e. Connect the pocket tester (Ω 1k) to thethrottle position sensor.

Tester positive lead YELLOW Tester negative lead BLACK/BLUE

f. While slowly opening the throttle, checkthat the throttle position sensor resis-tance is within the specified range.Out of specification Replace thethrottle position sensor.

Throttle position sensorresistance

0 5 ± 1.5 kΩ at 20C(YELLOW — BLACK/BLUE)

2. Adjust: throttle position sensor angle

a. Turn the main switch to “ON”.

6-11

CARBURETORS CARB

2

3

NOTE:

NOTE:

1

2

3

a

b

NOTE:

b. Disconnect the throttle position sensorcoupler.

c. Reconnect the throttle position sensorcoupler.

After reconnecting the throttle position sen-sor coupler, the tachometer switches to thethrottle position sensor adjustment mode.

d. Loosen the throttle position sensorscrews 1 .

e. Adjust the throttle position sensor angleaccording to the following table:

The angle of the throttle position sensor is in-dicated by the RPM which is displayed onthe tachometer.

TachometerReading

Throttleposition

sensor angle

Adjust-ment

direction

5000 rpm Correct ——

0 rpm Incorrect

10000 rpm Incorrect

f. After adjusting the throttle position sensorangle, tighten the throttle position sensorscrews.

To exit the throttle position sensor adjust-ment mode, start the engine or turn the mainswitch to “OFF”.

6-12

CARB

CHAS

7

CHAS

CHAPTER 7CHASSIS

FRONT WHEEL AND BRAKE DISCS 7-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . FRONT WHEEL 7-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . REMOVING THE FRONT WHEEL 7-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CHECKING THE FRONT WHEEL 7-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CHECKING THE BRAKE DISCS 7-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . INSTALLING THE FRONT WHEEL 7-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ADJUSTING THE FRONT WHEEL STATIC BALANCE 7-7. . . . . . . . . . . . . . . . . . . . . .

REAR WHEEL, BRAKE DISC AND REAR WHEEL SPROCKET 7-8. . . . . . . . . . . . . . . REAR WHEEL 7-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . BRAKE DISC AND REAR WHEEL SPROCKET 7-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . DISASSEMBLY THE REAR WHEEL 7-10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . REMOVING THE REAR WHEEL 7-11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CHECKING THE REAR WHEEL 7-11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CHECKING AND REPLACING THE REAR WHEEL SPROCKET 7-12. . . . . . . . . . . . INSTALLING THE REAR WHEEL 7-12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ADJUSTING THE REAR WHEEL STATIC BALANCE 7-13. . . . . . . . . . . . . . . . . . . . . .

FRONT AND REAR BRAKES 7-14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . FRONT BRAKE PADS 7-14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . REAR BRAKE PADS 7-15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . REPLACING THE FRONT BRAKE PADS 7-16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . REPLACING THE REAR BRAKE PADS 7-18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . FRONT BRAKE MASTER CYLINDER 7-20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . REAR BRAKE MASTER CYLINDER 7-22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . REMOVING THE FRONT BRAKE MASTER CYLINDER 7-24. . . . . . . . . . . . . . . . . . . REMOVING THE REAR BREAKE MASTER CYLINDER 7-24. . . . . . . . . . . . . . . . . . . CHECKING THE FRONT AND REAR BRAKE MASTERCYLINDERS 7-25. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ASSEMBLING AND INSTALLING THE FRONT BRAKEMASTER CYLINDER 7-26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ASSEMBLING AND INSTALLING THE REAR BRAKE MASTER CYLINDER 7-27. . FRONT BRAKE CALIPERS 7-29. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . REAR BRAKE CALIPER 7-31. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . DISASSEMBLING THE FRONT BRAKE CALIPER 7-33. . . . . . . . . . . . . . . . . . . . . . . . DISASSEMBLING THE REAR BRAKE CALIPER 7-34. . . . . . . . . . . . . . . . . . . . . . . . . CHECKING THE FRONT AND REAR BRAKE CALIPERS 7-34. . . . . . . . . . . . . . . . . . ASSEMBLING AND INSTALLING THE FRONT BRAKECALIPERS 7-35. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ASSEMBLING AND INSTALLING THE REAR BRAKECALIPER 7-37. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

FRONT FORK 7-40. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . REMOVING THE FRONT FORK LEGS 7-43. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . DISASSEMBLING THE FRONT FORK LEGS 7-43. . . . . . . . . . . . . . . . . . . . . . . . . . . . . CHECKING THE FRONT FORK LEGS 7-44. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ASSEMBLING THE FRONT FORK LEGS 7-45. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . INSTALLING THE FRONT FORK LEGS 7-47. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

HANDLEBAR 7-48. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . REMOVING THE HANDLEBAR 7-50. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CHECKING THE HANDLEBAR 7-50. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . INSTALLING THE HANDLEBAR 7-51. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

CHAS

STEERING HEAD 7-53. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . LOWER BRACKET 7-53. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . REMOVING THE LOWER BRACKET 7-55. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CHECKING THE STEERING HEAD 7-55. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . INSTALLING THE STEERING HEAD 7-56. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

REAR SHOCK ABSORBER AND RELAY ARM 7-57. . . . . . . . . . . . . . . . . . . . . . . . . . . . . HANDLING THE REAR SHOCK ABSORBER 7-59. . . . . . . . . . . . . . . . . . . . . . . . . . . . . DISPOSING OF A REAR SHOCK ABSORBER 7-59. . . . . . . . . . . . . . . . . . . . . . . . . . . REMOVING THE REAR SHOCK ABSORBER ASSEMBLY 7-60. . . . . . . . . . . . . . . . . CHECKING THE REAR SHOCK ABSORBER ASSEMBLY 7-61. . . . . . . . . . . . . . . . . INSTALLING THE REAR SHOCK ABSORBER ASSEMBLY 7-61. . . . . . . . . . . . . . . .

SWINGARM AND DRIVE CHAIN 7-62. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . REMOVING THE SWINGARM 7-64. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CHECKING THE SWINGARM 7-65. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CHECKING THE DRIVE CHAIN 7-66. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . INSTALLING THE SWINGARM 7-67. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . INSTALLING THE DRIVE CHAIN 7-68. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7-1

23 Nm(2.3 mkg)

40 Nm(4.0 mkg)

67 Nm (6.7 mkg)

20 Nm (2.0 mkg)

Order Job name/Part name Q’ty Remarks

1

2345678

Removing the flont wheel and brakediscsWheel axle pinch bolt

Brake hose horder (left /right)Brake caliper (left /right)Wheel axleFront wheel assemblySpeed sensor unitCollarBrake disc (left /right)

1

1/11/11111

1/1

Remove the parts in the order listed.

Loosen

Refer to “REMOVING/INSTALLING THEFRONT WHEEL” section.

For installation, reverse the removalprocedure.

NOTE:

FRONT WHEEL AND BRAKE DISC CHAS

CHASSISFRONT WHEEL AND BRAKE DISC

7-2

Order Job name/Part name Q’ty Remarks

Disassembling the front wheelOil sealBearingSpacerBearing

1111

Disassembly the parts in the order listed.

For assembly, reverse the disassemblyprodedure.

1234

FRONT WHEEL AND BRAKE DISC CHAS

FRONT WHEEL

7-3

FRONT WHEEL AND BRAKE DISC CHAS

NOTE:

NOTE:

CAUTION:

NOTE:

EB700102

REMOVING THE FRONT WHEEL1. Stand the motorcycle on a level surface.

Securely support the motorcycle so thatthere is no danger of it falling over.

Place the motorcycle on a suitable stand sothat the front wheel is elevated.

2. Remove: wheel axle pinch bolt brake hose holder (left /right)

3. Remove: left brake caliper right brake caliper

Do not squeeze the brake lever when re-moving the brake calipers.

4. Remove: Wheel axle Speed sensor unit 1

Push the front wheel rearward andremove the speed sensor unit 1 from thefront wheel.

5. Elevate: front wheel

Place the motorcycle on a suitable stand sothat the front wheel is elevated.

EB700400

CHECKING THE FRONT WHEEL1. Measure: wheel axle runout

Wheel axle runout<Limit> 0.25 mm

Do not attempt to straighten a bent wheelaxle.

2. Check: tire front wheel

Damage/wear Replace.Refer to “CHECKING THE TIRES” and”!CHECKING THE WHEELS” in chapter 3.

7-4

FRONT WHEEL AND BRAKE DISC CHAS

2

1

NOTE:

CAUTION:

NOTE:

3. Measure: front wheel radial runout 1 front wheel lateral runout 2

Over the specified limits Replace.

Front wheel radial runout limit1.0 mm

Front wheel lateral runout limit0.5 mm

4. Check: wheel bearings

Front wheel turns roughly or is loose Replace the wheel bearings.

oil sealsDamage/wear Replace.

5. Replace: wheel bearings (New) oil seals (New)

a. Clean the outside of the front wheel hub.b. Remove the oil seals 1 with a flat-head

screwdriver.

To prevent damaging the wheel, place a rag2 between the screwdriver and the wheelsurface.

c. Remove the wheel bearings 3 with ageneral bearing puller 4 .

d. install the new wheel bearings and oilseals in the reverse order of disassembly.

Do not contact the wheel bearing centerrace 5 or balls 6 . Contact should bemade only with the outer race 7 .

Use a socket 8 that matches the diameterof the wheel bearing outer race and oil seal.

7-5

FRONT WHEEL AND BRAKE DISC CHAS

NOTE:

EB700414

CHECKING THE BRAKE DISCSThe following procedure applies to all of thebrake discs.

1. Check: brake disc

Damage/galling Replace.

2. Measure: brake disc deflection a

Out of specification Correct the brakedisc deflection or replace the brake disc.

Brake disc deflection limit(maximum)

Front: 0.2 mmRear: 0.15 mm

a. Place the motorcycle on a suitable standso that the wheel is elevated.

b. Before measuring the front brake discdeflection, turn the handlebar to the left orright to ensure that the front wheel is sta-tionary.

c. Remove the brake caliper.d. Hold the dial gauge at a right angle

against the brake disc surface.e. Measure the deflection 2 3 mm below

the edge of the brake disc.

3. Measure: brake disc thickness b

Measure the brake disc thickness at a fewdifferent locations.Out of specification Replace.

Brake disc thickness limit(minimum)

Front: 3.5 mmRear: 4.5 mm

4. Adjust: brake disc deflection

a. Remove the brake disc.b. Rotate the brake disc by one bolt hole.c. Install the brake disc.

Tighten the brake disc bolts 1 in stages andin a crisscross pattern.

Brake disc bolt LOCKTITE

23 Nm (2.3 mkg)

d. Measure the brake disc deflection.e. If out of specification, repeat the adjust-

ment steps until the brake disc deflectionis within specification.

f. If the brake disc deflection cannot bebrought within specification, replace thebrake disc.

7-6

FRONT WHEEL AND BRAKE DISC CHAS

NOTE:

NOTE:

CAUTION:

EB700722

INSTALLING THE FRONT WHEEL1. Lubricate: wheel axle wheel bearings oil seal lips

Recommended lubricantLithium soap base grease

2. Install: Speed sensor unit

Make sure that the speed sensor unit andthe wheel hud are installed with the two pro-jections a meshed into the two slots b re-spectively.

3. Install: front wheel

Make sure that the slot a in the speed sen-sor unit fits over the stopper on the outertube b .

4. Tighten: wheel axle wheel axle pinch bolt brake caliper bolts

Wheel axle67 Nm (6.7 mkg)

Wheel axle pinch bolt20 Nm (2.0 mkg)

Brake caliper bolt40 Nm (4.0 mkg)

Make sure that the brake cable is routedproperly.

Before tightening the wheel axle nut,push down hard on the handlebar sever-al times and check if the front fork re-bounds smoothly.

7-7

FRONT WHEEL AND BRAKE DISC CHAS

A

B

C

D

X1

X

NOTE:

NOTE:

NOTE:

EB700901

ADJUSTING THE FRONT WHEEL STATICBALANCE

After replacing the tire. wheel or both, thefront wheel static balance should be ad-justed.

Adjust the front wheel static balance withthe brake discs installed.

1. Remove: balancing weight(-s)

Place the front wheel on a suitable balancingstand.

2. Find: front wheel’s heavy spot

a. Spin the front wheelb. When the front wheel stops, put an “X1”

mark at the bottom of the wheel.c. Turn the front wheel 90 so that the “X1”

mark is positioned as shown A .d. Release the front wheel.e. When the wheel stops, put an “X2” mark

at the bottom of the wheel B .f. Repeat steps (b) through (d) several

times until all the marks come to rest atthe same spot.

g. The spot where all the marks come to restis the front wheel’s heavy spot “X”.

3. Adjust: front wheel static balance

a. Install a balancing weight 1 onto the rimexactly opposite the heavy spot “X” C .

Start with the lightest weight.

b. Turn the front wheel 90 so that the heavyspot is positioned as shown D .

c. If the heavy spot does not stay in thatposition, install a heavier weight.

d. Repeat steps (b) and (c) until the frontwheel is balanced.

4. Check: front wheel static balance

a. Turn the front wheel and make sure that itstays at each position shown.

b. If the front wheel does not remain station-ary at all of the positions, rebalance it.

7-8

117 Nm (11.7 mkg)

40 Nm (4.0 mkg)

Order Job name/Part name Q’ty Remarks

12345678

Removing the rear wheelBrake caliperNutWasherWheel axleWasherDrive chain puller (left)Drive chain puller (right)Rear wheel assembly

11111111

Remove the parts in the order listed.

Refer to “REMOVING/INSTALLING THEREAR WHEEL” section.

For installation, reverse the removalprocedure.

REAR WHEEL, BRAKE DISC AND REAR WHEEL SPROCKET CHAS

REAR WHEEL, BRAKE DISC AND REAR WHEEL SPROCKETREAR WHEEL

7-9

23 Nm (2.3 mkg)

60 Nm (6.0 mkg)

Order Job name/Part name Q’ty Remarks

12345678

Removing the brake disk and rearwheel sprocketCollar (left /right)Brake discRear wheel sprocketCollarDrive hub damperRear wheel drive hubOil sealBearing

1/11116111

Remove the parts in the order listed.

For instalation, reverse the removalprocedure.

REAR WHEEL, BRAKE DISC AND REAR WHEEL SPROCKET CHAS

BRAKE DISC AND REAR WHEEL SPROCKET

7-10

Order Job name/Part name Q’ty Remarks

Disassembling the rear wheelOil sealBearingCollarBearing

1111

Disassembly the parts in the order listed.

For assembly, reverse the disassemblyprocedure.

1234

REAR WHEEL, BRAKE DISC AND REAR WHEEL SPROCKET CHAS

DIASSEMBLY THE REAR WHEEL

7-11

1

12

3

REAR WHEEL, BRAKE DISC AND REAR WHEEL SPROCKET CHAS

NOTE:

NOTE:

NOTE:

EB701100

REMOVING THE REAR WHEEL1. Stand the motorcycle on a level surface.

Securely support the motorcycle so. thatthere is no danger of it falling over.

Place the motorcycle on a suitable stand sothat the rear wheel is elevated.

2. Remove: brake caliper 1

Do not depress the brake pedal when re-moving the brake caliper.

3. Loosen: locknut 1 adjusting nut 2

4. Remove: wheel axle nut 3 wheel axle 4 rear wheel

Push the rear wheel forward and remove thedrive chain from the rear wheel sprocket.

5. Remove: left collar 1 rear wheel drive hub 2 rear wheel drive hub damper 3 right collar

EB701400

CHECKING THE REAR WHEEL1. Check: wheel axle rear wheel wheel bearings oil seals

Refer to “FRONT WHEEL AND BRAKEDISC”

2. Check: tire rear wheel

Damage/wear Replace.Refer to “CHECKING THE TIRES” and“CHECKING THE WHEELS” in chapter 3.

7-12

REAR WHEEL, BRAKE DISC AND REAR WHEEL SPROCKET CHAS

NOTE:

3. Measure: rear wheel radial runout rear wheel lateral runout

Refer to “FRONT WHEEL AND BRAKEDISC”.

EB701440

CHECKING AND REPLACING THE REARWHEEL SPROCKET

1. Check: rear wheel sprocket

More than 1/4 tooth a wear Replacethe rear wheel sprocket.Bent teeth Replace the rear wheelsprocket.

correct b drive chain roller 1 rear wheel sprocket 2

2. Replace: rear wheel sprocket 1

a. Remove the self-locking nuts and the rearwheel sprocket.

b. Clean the rear wheel drive hub with aclean cloth, especially the surfaces thatcontact the sprocket.

c. Install the new rear wheel sprocket.

Rear wheel sprocket self-locking nut

60 Nm (6.0 mkg)

Tighten the self-locking nuts 2 in stagesand in a crisscross pattern.

EB701711

INSTALLING THE REAR WHEEL1. Lubricate: wheel axle wheel bearings oil seal lips

Recommended lubricantLithium soap base grease

2. Tighten: wheel axle nut brake caliper bolts

Wheel axle nut117 Nm (11.7 mkg)

Brake caliper bolt40 Nm (4.0 mkg)

7-13

REAR WHEEL, BRAKE DISC AND REAR WHEEL SPROCKET CHAS

NOTE:

EB701900

ADJUSTING THE REAR WHEEL STATICBALANCE

After replacing the tire, wheel or both, therear wheel static balance should be ad-justed.

Adjust the rear wheel static balance withthe brake disc and rear wheel drive hubinstalled.

1. Adjust: rear wheel static balance

Refer to “FRONT WHEEL AND BRAKEDISC”.

7-14

40 Nm (4.0 mkg)

Order Job name/Part name Q’ty Remarks

12345

Removing the front brake padsBrake caliperBrake pads clipBrake pad pinBrake pad springBrake pad

12112

Remove the parts in the order listed.

Refer to “REPLACING THE FRONTBRAKE PADS” section.

For installation, reverse the removalprocedure.

FRONT AND REAR BRAKES CHAS

FRONT AND REAR BRAKESFRONT BRAKE PADS

7-15

40 Nm (4.0 mkg)

10 Nm (1.0 mkg)

Order Job name/Part name Q’ty Remarks

1234

Removing the rear brake padsCaliperBrake pad pinBrake pad/shimBrake pad spring

12

2/21

Remove the parts in the order listed.

Refer to “REPLACING THE REARBRAKE PADS” section.

For instalation, reverse the removalprocedure.

FRONT AND REAR BRAKES CHAS

REAR BRAKE PADS

7-16

FRONT AND REAR BRAKES CHAS

CAUTION:

NOTE:

EB702100

Disc brake componets rarely require dis-assembly.Tehrefore, always follow these preven-tive measures: Never disassemble brake components

unless absolutely necessary. If any connection on the hydraulic

brake system is disconnected, the en-tire brake system must be disas-sembled, drained, cleaned, properlyfilled, and bled after reassembly.

Never use solvents on internal brakecomponents.

Use only clean or new brake fluid forcleaning brake components.

Brake fluid may damage painted sur-faces and plastic parts. Therefore, al-ways clean up any spilt fluid immedi-ately.

Avoid brake fluid coming into contactwith the eyes as it can cause serious in-jury.

First aid for brake fluid entering the eyes: Flush with water for 15 minutes and get

immediate medical attention.

EB702112

REPLACING THE FRONT BRAKES PADSThe following procedure applies to both brakecalipers.

When replacing the brake pads, it is not nec-essary to disconnect the brake hose or dis-assemble the brake caliper.

1. Remove: brake hose holder 1 speedometer cable guide 2 brake caliper 3

2. Remove: brake pad clips 1 brake pad pins 2 brake pad spring 3

7-17

FRONT AND REAR BRAKES CHAS

NOTE:

6 Nm (0.6 mkg)

40 Nm (4.0 mkg)

NOTE:

3. Remove: brake pads 1

(along with the brake pad shims)

4. Measure: brake pad wear limit a

Out of specification Replace the brakepads as a set.

Brake pad wear limit0.5 mm

5. Install: brake pad shims

(onto the brake pads) brake pads brake pad spring

Always install new brake pads, brake padshims, and a brake pad spring as a set.

a. Connect a clear plastic hose 1 tightly tothe bleed screw 2 . Put the other end ofthe hose into an open container.

b. Loosen the bleed screw and push thebrake caliper pistons into the brake cali-per with your finger.

c. Tighten the bleed screw.

d. Install new brake pad shims onto the newbrake pads.

e. Install new brake pads and a new brakepad spring.

6. Install: brake pad spring brake pad pins 1 brake pad clips 2 brake caliper

The arrow a on the brake pad spring mustpoint in the direction of disc rotation.

7. Check: brake fluid level

Below the minimum level mark a Addthe recommended brake fluid to the properlevel.Refer to “CHECKING THE BRAKE FLUIDLEVEL” in chapter 3.

8. Check: brake lever operation

Soft or spongy feeling Bleed the brakesystem.Refer to “BLEEDING THE HYDRAULICBRAKE SYSTEM” in chapter 3.

7-18

FRONT AND REAR BRAKES CHAS

NOTE:

NOTE:

6 Nm (6 mkg)

EB702113

REPLACING THE REAR BRAKE PADS

When replacing the brake pads, it is not nec-essary to disconnect the brake hose or dis-assemble the brake caliper.

1. Remove: brake caliper 1

2. Remove: brake pad pins 1

3. Remove: brake pads 2

(along with the brake pad shims) brake pad spring

4. Measure: brake pad wear limit a

Out of specification Replace the brakepads as a set.

Brake pad wear limit0.5 mm

5. Install brake pad shims

(onto the brake pads) brake pads brake pad spring

Always install new brake pads, brake padshims, and a brake pad spring as a set.

a. Connect a clear plastic hose 1 tightly tothe bleed screw 2 . Put the other end ofthe hose into an open container.

b. Loosen the bleed screw and push thebrake caliper pistons into the brake cali-per with your finger.

c. Tighten the bleed screw.

d. Install a new brake pad shim 3 onto eachnew brake pad 4 .

e. Install new brake pads and a new brakepad spring.

7-19

FRONT AND REAR BRAKES CHAS

10 Nm (1.0 mkg)

40 Nm (4.0 mkg)

6. Install: brake pad pins 1

brake caliper

7. Check: brake fluid level

Below the minimum level mark a Addthe recommended brake fluid to the properlevel.Refer to “CHECKING THE BRAKE FLUIDLEVEL” in chapter 3.

8. Check: brake lever operation

Soft or spongy feeling Bleed the brakesystem.Refer to “BLEEDING THE HYDRAULICBRAKE SYSTEM” in chapter 3.

7-20

10 Nm(1.0 mkg)

30 Nm(3.0 mkg)

Order Job name/Part name Q’ty Remarks

1234567

Removing the front brake mastercylinderDrain the brake fluidBrake leverBrake switch leadBrake switchUnion boltCopper washer/brake hoseMaster cylinder bracketMaster cylinder

1211

2/111

Remove the parts in the order listed.

Refer to “REMOVING/ASSEMBLINGAND INSTALLING THE FRONT BRAKEMASTER CYLINDER” section.

For installation, reverse the removalprocedure.

FRONT AND REAR BRAKES CHAS

FRONT BRAKE MASTER CYLINDER

7-21

Order Job name/Part name Q’ty Remarks

Disassembling the front brake master cylinderMaster cylinder bootCirclipMaster cylinder kitSpring

1111

Disassembly the parts in the order listed.

For assembly, reverse the disassemblyprocedure.

1234

FRONT AND REAR BRAKES CHAS

7-22

30 Nm(3.0 mkg)

4 Nm(0.4 mkg)

23 Nm(2.3 mkg)

Order Job name/Part name Q’ty Remarks

123

45678

Removing the rear brake mastercylinderSide cover (right)Drain the brake fluidMaster cylinder boltUnion boltCopper washer/brake hose

Clip/hoseCotter pinPinWasherMaster cylinder

21

2/1

2/11111

Remove the parts in the order listed.

Refer to “REMOVING/ASSEMBLINGAND INSTALLING THE REAR BRAKEMASTER CYLINDER” section.

For installation, reverse the removalprocedure.

FRONT AND REAR BRAKES CHAS

REAR BRAKE MASTER CYLINDER

7-23

Order Job name/Part name Q’ty Remarks

1234

Disassembling the rear brake mastercylinderMaster cylinder bootCirclipMaster cylinder kitSpring

1111

Disassembly the parts in the order listed.

For assembly, reverse the disassemblyprocedure.

FRONT AND REAR BRAKES CHAS

7-24

FRONT AND REAR BRAKES CHAS

NOTE:

NOTE:

NOTE:

EB702210

REMOVING THE FRONT BRAKE MASTER CYLINDER

Befor disassembling the front brake mastercylinder, drain the brake fluid from the entirebrake system.

1. Disconnect: brake switch coupler 1

(from the brake switch)

2. Remove: union bolt 2 copper washers 3 brake hoses 4

To collect any remaining brake fluid, place acontainer under the master cylinder and theend of the brake hose.

EB702220

REMOVING THE REAR BRAKE MASTER CYLINDER

1. Remove: side cover right

2. Remove: union bolt 1 copper washers 2 brake hose 3

To collect any remaining brake fluid, place acontainer under the master cylinder and theend of the brake hose.

7-25

FRONT AND REAR BRAKES CHAS

D

A B

C

EB702242

CHECKING THE FRONT AND REAR BRAKEMASTER CYLINDERSThe following procedure applies to the both ofthe brake master cylinders.

1. Check: brake master cylinder

Damage/scratches/wea Replace. brake fluid delivery passages

(brake master cylinder body)Obstruction Blow out with compressedair.

A FrontB Rear

2. Check: brake master cylinder kit 1

Damage/scratches/wear Replace.C FrontD Rear

3. Check: rear brake fluid reservoir 1

Cracks/damage Replace. rear brake fluid reservoir diaphragm 2

Cracks/damage Replace.

4. Check front brake master cylinder diaphragm 1

Damage/wear Replace.

5. Check: brake hoses 1

Cracks/damage/wear Replace.

7-26

a

FRONT AND REAR BRAKES CHAS

30 Nm (3.0 mkg)

CAUTION:

NOTE:

EB702270

ASSEMBLING AND INSTALLING THEFRONT BRAKE MASTER CYLINDER

Before installation, all internal brakecomponents should be cleaned and lu-bricated with clean or new brake fluid.

Never use solvents on internal brakecomponents.

Recommended brake fluidDOT 4

1. Install: copper washers (New) 1 brake hose 2 union bolt 3

Proper brake hose routing is essential toinsure safe motorcycle operation. Referto “CABLE ROUTING”.

When installing the brake hose onto thebrake master cylinder, make sure that thebrake pipe touches the projection a onthe brake master cylinder.

While holding the brake hose, tighten theunion bolt as shown.

Turn the handlebar to the left and to theright to make sure that the brake hosedoes not touch other parts (e.g, wire har-ness, cables, leads). Correct if necessary.

2. Fill: brake master cylinder reservoir

(with the specified amount of the recom-mended brake fluid)

Recommended brake fluidDOT 4

Use only the designated brake fluid.Other brake fluids may cause therubber seals to deteriorate, causingleakage and poor brake performance.

Refill with the same type of brake fluidthat is already in the system. Mixingbrake fluids may result in a harmfulchemical reaction, leading to poorbrake performance.

When refilling, be careful that waterdoes not enter the reservoir. Water willsignificantly lower the boiling point ofthe brake fluid and could cause vaporlock.

7-27

FRONT AND REAR BRAKES CHAS

CAUTION:

30 Nm (3.0 mkg)

CAUTION:

Brake fluid may damage paintedsurfaces and plastic parts. Therefore,always clean up any spilt brake fluidimmediately.

3. Bleed: brake system

Refer to “BLEEDING THE HYDRAULICBRAKE SYSTEM” in chapter 3.

4. Check: brake fluid level

Below the minimum level mark a Addthe recommended brake fluid to the properlevel.Refer to “CHECKING THE BRAKE FLUIDLEVEL” in chapter 3.

5. Check: brake lever operation

Soft or spongy feeling Bleed the brakesystem.Refer to “BLEEDING THE HYDRAULICBRAKE SYSTEM” in chapter 3.

EB702292

ASSEMBLING AND INSTALLING THE REARBRAKE MASTER CYLINDER

1. Install: copper washers (New) 1 brake hose 2 union bolt 3

When installing the brake hose onto thebrake master cylinder, make sure that thebrake pipe touches the projection a onthe brake master cylinder.

Proper brake hose routing is essential toinsure safe motorcycle operation. Referto “CABLE ROUTING”.

2. Fill: brake fluid reservoir

(to the maximum level mark a )

Recommended brake fluidDOT 4

7-28

FRONT AND REAR BRAKES CHAS

CAUTION:

Use only the designated brake fluid.Other brake fluids may cause therubber seals to deteriorate, causingleakage and poor brake performance.

Refill with the same type of brake fluidthat is already in the system. Mixingbrake fluids may result in a harmfulchemical reaction, leading to poorbrake performance.

When refilling, be careful that waterdoes not enter the reservoir. Water willsignificantly lower the boiling point ofthe brake fluid and could cause vaporlock.

Brake fluid may damage paintedsurfaces and plastic parts. Therefore,always clean up any spilt brake fluidimmediately.

3. Bleed: brake system

Refer to “BLEEDING THE HYDRAULICBRAKE SYSTEM” in chapter 3.

4. Check: brake fluid level

Below the minimum level mark a Addthe recommended brake fluid to the properlevel.Refer to “CHECKING THE BRAKE FLUIDLEVEL” in chapter 3.

5. Adjust: brake pedal position a

Refer to “ADJUSTING THE REARBRAKE” in chapter 3.

Brake pedal position (belowthe top of the rider footrest)

36.6 mm

6. Adjust: rear brake light operation timing

Refer to “ADJUSTING THE REAR BRAKELICHT SWITCH” in chapter 3.

7-29

30 Nm(3.0 mkg)40 Nm(4.0 mkg)

Order Job name/Part name Q’ty Remarks

1234

Removing the front brake calipersDrain the brake fluidUnion boltCopper washerBrake hoseBrake caliper assembly

1211

Remove the parts in the order listed.

Refer to “ASSEMBLING ANDINSTALLING THE FRONT BRAKECALIPERS” section.

For installation, reverse the removalprocedure.

FRONT AND REAR BRAKES CHAS

FRONT BRAKE CALIPERS

7-30

Order Job name/Part name Q’ty Remarks

12345678

Disassembling the front brake calipersClipPad pinBrake pad springBrake padBleed screw kitBrake caliper pistonDust sealPiston seal

21121444

Disassembly the parts in the order listed.

Refer to “REPLACING THE FRONTBRAKE PADS” section.

Refer to “DISASSEMBLING THE FRONTBRAKE CALIPER” section.

For assembly, reverse the disassemblyprocedure.

FRONT AND REAR BRAKES CHAS

7-31

Order Job name/Part name Q’ty Remarks

1234

Removing the rear brake caliperDrain the brake fluidUnion boltCopper washerBrake hoseRear brake caliper

1211

Remove the parts in the order listed.

Refer to “ASSEMBLING ANDINSTALLING THE REAR BRAKECALIPER” section.

For installation, revers the removalprocedure.

30 Nm(3.0 mkg)

40 Nm(4.0 mkg)

FRONT AND REAR BRAKES CHAS

REAR BRAKE CALIPER

7-32

10 Nm (1.0 mkg)

Order Job name/Part name Q’ty Remarks

1234567

Disassembling the rear brake caliperPad pinPad springBrake pad assembly/shimBleed screw kitBrake caliper pistonDust sealPiston seal

21

2/22222

Disassembly the parts in the order listed.

Refer to “REPLACING THE REARBRAKE PAD” section.

Refer to “DISASSEMBLING THE REARBRAKE CARIPER” section.

For assembly, reverse the disassemblyprocedure.

FRONT AND REAR BRAKES CHAS

7-33

FRONT AND REAR BRAKES CHAS

NOTE:

NOTE:

EB702317

DISASSEMBLING THE FRONT BRAKECALIPERSThe following procedure applies to both of thebrake calipers.

Before disassembling either brake caliper,drain the brake fluid from the entire brakesystem.

1. Remove: union bolt 1 copper washers 2 brake hose 3

Put the end of the brake hose into a contain-er and pump out the brake fluid carefully.

2. Remove: brake caliper pistons 1 brake caliper piston seals 2

a. Secure the right side brake caliper pis-tons with a piece of wood a

b. Blow compressed air into the brake hosejoint opening b to force out the left sidepistons from the brake caliper.

c. Remove the brake caliper piston seals.d. Repeat the previous steps to force out the

right side pistons from the brake caliper.

Never try to pry out the caliper pistons. Do not remove the plugs 4 .

7-34

FRONT AND REAR BRAKES CHAS

NOTE:

NOTE:

EB702322

DISASSEMBLING THE REAR BRAKECALIPER

Before disassembling the brake caliper,drain the brake fluid from the entire brakesystem.

1. Remove: union bolt 1 copper washers 2 brake hose 3

Put the end of the brake hose into a contain-er and pump out the brake fluid carefully.

2. Remove: brake caliper pistons 1 brake caliper piston seals 2

a. Secure the right side brake caliper pistonwith a piece of wood a

b. Blow compressed air into the brake hosejoint opening b to force out the left sidepiston from the brake caliper.

Never try to pry out the brake caliperpistons.

Do not loosen the bolts 3 .

c. Remove the brake caliper piston seals.d. Repeat the previous steps to force out the

right side piston from the brake caliper.

EB702343

CHECKING THE FRONT AND REAR BRAKECALIPERS

Recommended brake componentreplacement schedule

Brake pads If necessary

Piston seals Every two years

Brake hoses Every four years

Brake fluid Every two years andwhenever the brake isdisassembled.

7-35

FRONT AND REAR BRAKES CHAS

A

B

30 Nm (30 mkg)

1. Check: brake caliper pistons 1

Rust/scratches/wear Replace thebrake caliper.

brake caliper cylinders 2Scratches/wear Replace the brake cali-per.

brake calipers 3Cracks/damage Replace.

brake fluid delivery passages(brake caliper body)Obstruction Blow out with compressedair.

Whenever a brake caliper is disas-sembled, replace the brake caliper pistonseals.

A FrontB Rear

2. Check: brake caliper brackets 1

Cracks/damage Replace.

EB702374

ASSEMBLING AND INSTALLING THEFRONT BRAKE CALIPERSThe following procedure applies to both of thebrake calipers.

Before installation, all internal brakecomponents should be cleaned and lu-bricated with clean or new brake fluid.

Never use solvents on internal brakecomponents as they will cause the pis-ton seals to swell and distort.

Whenever a brake caliper is disas-sembled, replace the brake caliper pis-ton seals.

Recommended brake fluidDOT 4

1. Install: brake caliper 1

(temporarily) copper washers (New) 2 brake hose 3 union bolt 4

Proper brake hose routing is essential toinsure safe motorcycle operation. Referto “CABLE ROUTING”.

7-36

FRONT AND REAR BRAKES CHAS

CAUTION:

CAUTION:

When installing the brake hose onto thebrake caliper, make sure that the brakepipe a touches the projection a on thebrake caliper.

2. Remove: brake caliper

3. Install: brake pads brake spring brake caliper pins brake caliper clips brake caliper brake hose holder

Refer to “REPLACING THE BRAKEPADS”.

Brake caliper bolt40 Nm (40 mkg)

4. Fill: brake master cylinder reservoir

(with the specified amount of the recom-mended brake fluid)

Recommended brake fluidDOT 4

Use only the designated brake fluid.Other brake fluids may cause the rub-ber seals to deteriorate, causing leak-age and poor brake performance.

Refill with the same type of brake fluidthat is already in the system. Mixingbrake fluids may result in a harmfulchemical reaction, leading to poorbrake performance.

When refilling, be careful that waterdoes not enter the reservoir. Water willsignificantly lower the boiling point ofthe brake fluid and could cause vaporlock.

Brake fluid may damage painted sur-faces and plastic parts. Therefore, al-ways clean up any spilt brake fluid im-mediately.

7-37

1 32

FRONT AND REAR BRAKES CHAS

30 Nm (3.0 mkg)

CAUTION:

5. Bleed: brake system

Refer to “BLEEDING THE HYDRAULICBRAKE SYSTEM” in chapter 3.

6. Check: brake fluid level

Below the minimum level mark a Addthe recommended brake fluid to the properlevel.Refer to “CHECKING THE BRAKE FLUIDLEVEL” in chapter 3.

7. Check: brake lever operation

Soft or spongy feeling Bleed the brakesystem.Refer to “BLEEDING THE HYDRAULICBRAKE SYSTEM” in chapter 3.

EB702378

ASSEMBLING AND INSTALLING THE REARBRAKE CALIPER

Before installation, all internal brakecomponents should be cleaned and lu-bricated with clean or new brake fluid.

Never use solvents on internal brakecomponents as they will cause the pis-ton seals to swell and distort.

Whenever a brake caliper is disas-sembled, replace the brake caliper pis-ton seals.

Recommended brake fluidDOT 4

1. Install: brake caliper 1

(temporarily) copper washers (New) brake hose 2 union bolt 3

Proper brake hose routing is essential toinsure safe motorcycle operation. Referto “CABLE ROUTING”.

When installing the brake hose onto thebrake caliper, make sure that the brakepipe a slot the projection a on the brakecaliper.

7-38

FRONT AND REAR BRAKES CHAS

CAUTION:

2. Remove: brake caliper

3. Install: brake pad spring brake pads brake pad pins brake caliper brake hose holder

Refer to “REPLACING THE BRAKEPADS”.

Brake caliper pad pin10 Nm (1.0 mkg)

Brake caliper bolt40 Nm (4.0 mkg)

4. Fill: brake fluid reservoir

(with the specified amount of the recom-mended brake fluid)

Recommended brake fluidDOT 4

Use only the designated brake fluid.Other brake fluids may cause the rub-ber seals to deteriorate, causing leak-age and poor brake performance.

Refill with the same type of brake fluidthat is already in the system. Mixingbrake fluids may result in a harmfulchemical reaction, leading to poorbrake performance.

When refilling, be careful that waterdoes not enter the reservoir. Water willsignificantly lower the boiling point ofthe brake fluid and could cause vaporlock.

Brake fluid may damage painted sur-faces and plastic parts. Therefore, al-ways clean up any spilt brake fluid im-mediately.

5. Bleed: brake system

Refer to “BLEEDING THE HYDRAULICBRAKE SYSTEM” in chapter 3.

7-39

FRONT AND REAR BRAKES CHAS

6. Check: brake fluid level

Below the minimum level mark a Addthe recommended brake fluid to the properlevel.Refer to “CHECKING THE BRAKE FLUIDLEVEL” in chapter 3.

7. Check: brake pedal operation

Soft or spongy feeling Bleed the brakesystem.Refer to “BLEEDING THE HYDRAULICBRAKE SYSTEM” in chapter 3.

7-40

30 Nm (3.0 mkg)

30 Nm (3.0 mkg)

7 Nm (0.7 mkg)

Order Job name/Part name Q’ty Remarks

12

3

4

5

Removing the front forkFront wheel

Front brake calipers

Front fenderBolt (upper bracket)

Cap bolt

Bolt (lower bracket)

Front fork assembly (left /right)

12

2

2

1/1

Remove the parts in the order listed.Refer to “FRONT WHEEL AND BRAKEDISCS” section.Refer to “FRONT AND REAR BRAKES”section.

Loosen

Loosen

LoosenRefer to “REMOVING/INSTALLING THEFRONT FORK LEGS” section.For installation, reverse the removalprocedure.

NOTE:Refer to“REMOVING/INSTALLING THEFRONT FORKLEGS” section.

NOTE:

NOTE:

FRONT FORK CHAS

FRONT FORK

7-41

10

23 Nm (2.3 mkg)

30 Nm (3.0 mkg)

6

7

9

8

11

14

1312

15

Order Job name/Part name Q’ty Remarks

12345678910111213

Disassembling the front forkCap boltO-ringSpacerWasherFront fork springDust sealOil seal clipBoltGasketDamper rod/rebound springInner tube/Inner tube bushingOil sealWasher

111111111

1/1111

Disassembly the parts in the order listed.

Refer to “ASSEMBLING THE FRONTFORK LEGS” section.

Refer to “DISASSEMBLING/ASSEMBLING THE FRONT FORKLEGS” section.

FRONT FORK CHAS

7-42

10

23 Nm (2.3 mkg)

30 Nm (3.0 mkg)

7

9

8

11

14

1312

15

Order Job name/Part name Q’ty Remarks

1415

Outer tube bushingOil flow stopper

11/1

Refer to “ASSEMBLING THE FRONTFORK LEGS” section.For assembly, reverse the disassemblyprocedure.

6

FRONT FORK CHAS

7-43

FRONT FORK CHAS

NOTE:

CAUTION:

NOTE:

EB703100

REMOVING THE FRONT FORK LEGSThe following procedure applies to both of thefront fork legs.

1. Stand the motorcycle on a level surface.

Securely support the motorcycle so thatthere is no danger of it falling over.

Place the motorcycle on a suitable stand sothat the front wheel is elevated.

2. Loosen: upper bracket pinch bolt 1 cap bolt 2 lower bracket pinch bolt 3

Before loosening the upper and lowerbracket pinch bolts, support the frontfork leg.

3. Remove: front fork leg

EB703110

DISASSEMBLING THE FRONT FORK LEGSThe following procedure applies to both of thefront fork legs.

1. Remove: dust seal 1 oil seal clip 2

(with a flat-head screwdriver)

Do not scratch the inner tube.

2. Remove: damper rod bolt

While holding the damper rod with the damp-er rod holder 1 and T-handle 2 , loosen thedamper rod bolt.

Damper rod holder90890-01460

T-Handle90890-01326

7-44

FRONT FORK CHAS

CAUTION:

CAUTION:

3. Remove: inner tube

a. Hold the front fork leg horizontally.b. Securely clamp the brake caliper bracket

in a vise with soft jaws.c. Separate the inner tube from the outer

tube by pulling the inner tube forcefullybut carefully.

Excessive force will damage the oil sealand bushing. A damaged oil seal orbushing must be replaced.

Avoid bottoming the inner tube into theouter tube during the above procedure,as the oil flow stopper will be damaged.

EB703401

CHECKING THE FRONT FORK LEGSThe following procedure applies to both of thefront fork legs.

1. Check: inner tube 1 outer tube 2

Bends/damage/scratches Replace.

Do not attempt to straighten a bent innertube as this may dangerously weaken it.

2. Measure: spring free length a

Over the specified limit Replace.

Spring free length limit319 mm

3. Check: damper rod 1

Damage/wear Replace.Obstruction Blow out all of the oil pas-sages with compressed air.

oil flow stopperDamage/wear Replace.

The front fork leg has a built-in damperadjusting rod and a very sophisticatedinternal construction, which are partic-ularly sensitive to foreign material.

When disassembling and assemblingthe front fork leg, do not allow any for-eign material to enter the front fork.

7-45

FRONT FORK CHAS

1

NOTE:

CAUTION:

30 Nm (3.0 mkg)

NOTE:

4. Check: cap bolt O-ring

Damage/wear Replace.

EB703700

ASSEMBLING THE FRONT FORK LEGSThe following procedure applies to both of thefront fork legs.

Make sure that the oil levels in bothfront fork legs are equal.

Uneven oil levels can result in poorhandling and a loss of stability.

When assembling the front fork leg, besure to replace the following parts:-inner tube bushing-outer tube bushing-oil seal-dust seal

Before assembling the front fork leg, makesure that all of the components are clean.

1. Install: damper rod 1

Allow the damper rod to slide slowlydown the inner tube until it protrudesfrom the bottom of the inner tube. Becareful not to damage the inner tube.

2. Lubricate: inner tube’s outer surface

Recommended lubricantFork oil 10 W or equivalent

3. Tighten: damper rod bolt 1

While holding the damper rod with the damp-er rod holder 2 and T-handle 3 , tighten thedamper rod bolt.

Damper rod holder90890-01460

T-handle90890-01326

7-46

FRONT FORK CHAS

CAUTION:

NOTE:

NOTE:

4. Install: outer tube bushing 1

(with the fork seal driver weight 2 andadapter 3 )

Fork seal driver weight 290890-01367

Adapter 390890-01381

5. Install: washer oil seal 1

(with the fork seal driver weight 2 andadapter 3 )

Fork seal driver weight 290890-01367

Adapter 390890-01381

Make sure that the numbered side of theoil seal, faces up.

Before installing the oil seal, apply lithiumsoap base grease onto its lips.

Apply fork oil onto the outer surface of theinner tube.

6. Install: oil seal clip 1

Adjust the oil seal clip so that it fits into theouter tube’s groove.

7. Install: dust seal 1

(with the fork seal driver weight) 1

Fork seal driver weight90890-01367

8. Fill: front fork leg

(with the specified amount of the recom-mended fork oil)

Quantity (each front fork leg)0.475 L

Yamaha fork and shock oil10 W or equivalent.

Front fork leg oil level a (from the top of the inner tube, withthe inner tube fully compressedand without the fork spring)

121 mm

7-47

FRONT FORK CHAS

NOTE:

NOTE:

NOTE:

While filling the front fork leg, keep it up-right.

After filling, slowly pump the front fork legup and down to distribute the fork oil.

9. Install: spring 1 spring seat 2 spacer 3 cap bolt

Install the spring with the smaller pitch fac-ing up.

Before installing the cap bolt, apply greaseonto the O-ring.

Temporarily tighten the cap bolt.

EB703710

INSTALLING THE FRONT FORK LEGSThe following procedure applies to both of thefront fork legs.

1. Install: front fork leg

Temporarily tighten the upper and lowerbracket pinch bolts.

Make sure that the inner fork tube is flushwith the top of the handlebar holder.

2. Tighten: lower bracket pinch bolt 1 cap bolt 2 upper bracket pinch bolt 3

Lower bracket pinch bolt30 Nm (3.0 mkg)

Cap bolt23 Nm (2.3 mkg)

Upper bracket pinch bolt30 Nm (3.0 mkg)

Make sure that the brake hoses arerouted properly.

7-48

7 Nm (0.7 mkg)

10 Nm (1.0 mkg)

23 Nm (2.3 mkg)

7 Nm (0.7 mkg)

Order Job name/Part name Q’ty Remarks

123456789

1011

1213

Removing the handle barMaster cylinder bracketMaster cylinder assemblyThrottle cable housing coverHandle bar switch (right)Throttle cable housingThrottle cableGrip endGrip assemblyClutch cableClutch switchHandle bar switch (left)

Starter cableGrip end

11111111111

11

Remove the parts in the order listed.

Refer to “INSTALLING THEHANDLEBAR” section.

Refer to “INSTALLING THEHANDLEBAR” section.

HANDLEBAR CHAS

HANDLEBAR

7-49

7 Nm (0.7 mkg)

10 Nm (1.0 mkg)

23 Nm (2.3 mkg)

7 Nm (0.7 mkg)

Order Job name/Part name Q’ty Remarks

14151617

Grip (left)Clutch lever holderUpper handlebar holderHandle bar

1121

Refer to “REMOVING THE HANDLEBAR”section.Refer to “INSTALLING THEHANDLEBAR” section.

For installation, reverse the removalprocedure.

HANDLEBAR CHAS

7-50

HANDLEBAR CHAS

1

1

NOTE:

NOTE:

EB704100

REMOVING THE HANDLEBAR1. Stand the motorcycle on a level surface.

Securely support the motorcycle so thatthere is no danger of it falling over.

2. Remove: throttle cable housing 1 throttle grip 2

While removing the throttle cable housing,pull back the rubber cover 3 .

3. Remove: left handlebar grip 1

Blow compressed air between the handle-bar and the handlebar grip, and graduallypush the grip off the handlebar.

EB704400

CHECKING THE HANDLEBAR1. Stand the motorcycle on a level surface.

Securely support the motorcycle so thatthere is no danger of it falling over.

2. Check: handlebar 1

Bends/cracks/damage Replace.

Do not attempt to straighten a bent han-dlebar as this may dangerously weakenit.

3. Install: handlebar grip

a. Apply a light coat of rubber adhesive ontothe left end of the handlebar.

b. Slide the handlebar grip over the left endof the handlebar.

c. Wipe off any excess rubber adhesive witha clean rag.

Do not touch the handlebar grip until therubber adhesive has fully dried.

7-51

HANDLEBAR CHAS

b

23 Nm (2.3 mkg)

CAUTION:

NOTE:

NOTE:

NOTE:

NOTE:

EB704701

INSTALLING THE HANDLEBAR1. Stand the motorcycle on a level surface.

Securely support the motorcycle so thatthere is no danger of it falling over.

2. Install: handlebar 1 upper handlebar holders 2

First, tighten the bolts on the front sidea of the handlebar holder, then on therear side.

turn the handlebar all the way to the leftand right. If there is any contact with thefuel tank, adjust the handlebar posi-tion.

The upper handlebar holders should beinstalled with the arrows facing forward.

Align the match marks b on the handlebarwith the upper surface of the lower handle-bar holders.

3. Install: clutch lever holder handlebar grip 1 left grip end 2

There should be 1.0 mm of clearance a be-tween the handlebar grip and the left gripend.

4. Install: left handlebar switch 1

Align the projection a on the left handlebarswitch with the hole b in the handlebar.

5. Install: master cylinder bracket 1

Align the mating surfaces of the master cyl-inder bracket with the punch mark (right han-dlebar switch side) a on the handlebar.

7-52

HANDLEBAR CHAS

NOTE:

NOTE:

NOTE:

6. Install: throttle grip 1 throttle cable housing 2 throttle cables 3

Apply a thin coat of lithium soap basegrease onto the inside of the throttle grip andinstall it onto the handlebar.

Align the projection a on the throttle cablehousing with the hole b in the handlebar.

7. Install: right grip end right handlebar switch 1

Make sure that the throttle grip operatessmoothly.

Align the projection a on the right handle-bar switch with the hole b in the handle-bar.

8. Adjust: clutch cable free play

Refer to “ADJUSTING THE CLUTCHCABLE FREE PLAY” in chapter 3.

Clutch cable free play (at theend of the clutch lever)

10 15 mm

9. Adjust: throttle cable free play

Refer to “ADJUSTING THE THROTTLECABLE FREE PLAY” in chapter 3.

Throttle cable free play (at theflange of the throttle grip)

3 5 mm

7-53

110 Nm (11.0 mkg)

52 Nm (5.2 mkg)1st

18 Nm (1.8 mkg)2nd

Order Job name/Part name Q’ty Remarks

12345678

Removing the lower bracketFront cowling

Fuel tankFront wheelFront forkHandle barMain switch lead couplerBrake hose joint/coverSteering stem nutUpper bracketLock washerRing nut (upper)Rubber washer 1Ring nut (lower)

11/1111111

Remove the parts in the order listed.Refer to “FRONT COWUNG/SEAT/SIDE COVER/FUEL TANK” section in chapter 3

Refer to “FRONT WHEEL” section.Refer to “FRONT FORK” section.Refer to “HANDLEBAR” section.

Disconnect the coupler.

Refer to “REMOVING THE LOWERBRACKET/INSTALLING THE STEER-ING HEAD” section.

NOTE:

STEERING HEAD CHAS

STEERING HEADLOWER BRACKET

7-54

110 Nm (11.0 mkg)

52 Nm (5.2 mkg)1st

18 Nm (1.8 mkg)2nd

Order Job name/Part name Q’ty Remarks

910111213

Lower bracketBall race coverBall bearingRubber washer 1Ball bearing

11111

Refer to “INSTALLING THE STEERINGHEAD” section.

For installation, reverse the removalprocedure.

STEERING HEAD CHAS

7-55

STEERING HEAD CHAS

NOTE:

EB705102

REMOVING THE LOWER BRACKET1. Stand the motorcycle on a level surface.

Securely support the motorcycle so thatthere is no danger of it falling over.

2. Remove: upper ring nut lower ring nut 1

Hold the lower ring nut with the exhaust andsteering nut wrench 2 , then remove the up-per ring nut with the ring nut wrench.

Exhaust and steering nutwrench

90890-01268

Securely support the lower bracket sothat there is no danger of it falling.

EB705401

CHECKING THE STEERING HEAD1. Wash: bearing balls bearing races

Recommended cleaning solventKerosine

2. Check: bearing 1 bearing race 2

Damage/pitting Replace.

3. Replace: bearing balls bearing races

a. Remove the bearing races from the steer-ing head pipe with a long rod 1 and ham-mer.

7-56

STEERING HEAD CHAS

4

3

2

1

CAUTION:

NOTE:

NOTE:

NOTE:

b. Remove the bearing race from the lowerbracket with a floor chisel 2 and hammer.

c. Install a new dust seal and new bearingraces.

If the bearing race is not installed proper-ly, the steering head pipe could be dam-aged.

Always replace the bearing balls and bear-ing races as a set.

Whenever the steering head is disas-sembled, replace the dust seal.

4. Check: upper bracket lower bracket

(along with the steering stem)Bends/cracks/damage Replace.

EB705700

INSTALLING THE STEERING HEAD1. Lubricate: upper bearing lower bearing bearing races

Recommended lubricantLithium soap base grease

2. Install: lower ring nut 1 rubber washer 2 upper ring nut 3 lock washer 4

Refer to “CHECKING AND ADJUSTINGTHE STEERING HEAD” in chapter 3.

3. Install: upper bracket steering stem nut

Temporarily tighten the steering stem nut.

4. Install: front fork legs

Refer to “FRONT FORK”.

Temporarily tighten the upper and lowerbracket pinch bolts.

7-57

40 Nm (4.0 mkg)

48 Nm (4.8 mkg)

40 Nm (4.0 mkg)

48 Nm (4.8 mkg)

Order Job name/Part name Q’ty Remarks

1234567

Removing the rear shock absorberassembly and relay armSide covers

Rear wheel

Self-locking nut/washerBoltSelf-locking nut/washerBoltSelf-locking nut/boltRear shock absorber assemblySelf-locking nut

1/11

1/11

1/111

Remove the parts in the order listed.

Refer to “FRONT COWLING/SEAT/SIDE COVER/FUEL TANK” section in chapter 3Refer to “REAR WHEEL, BRAKE DISKAND REAR WHEEL SPROCKET” section.

= 120 mm

= 40 mm

Refer to “REMOVING/INSTALLING THEREAR SHOCK ABSORBER” section.

REAR SHOCK ABSORBER AND RELAY ARM CHAS

REAR SHOCK ABSORBER AND RELAY ARM

7-58

40 Nm (4.0 mkg)

48 Nm (4.8 mkg)

40 Nm (4.0 mkg)

48 Nm (4.8 mkg)

Order Job name/Part name Q’ty Remarks

89

10111213141516171819

BoltRelay armSelf-locking nut/washerBoltConnecting plateSpacerSpacerSpacerOil sealBearingBearingBearing

11

1/1121212211

= 80 mm

= 120 mm

For installation, reverse the removalprocedure.

REAR SHOCK ABSORBER AND RELAY ARM CHAS

7-59

REAR SHOCK ABSORBER AND RELAY ARM CHASEB706101

HANDLING THE REAR SHOCK ABSORBER

This rear shock absorber contain highlycompressed nitrogen gas.Before handling the rear shock absorber,read and make sure you understand thefollowing information. The manufacturercannot be held responsible for propertydamage or personal injury that may re-sult from improper handling of the rearshock absorber. Do not tamper or attempt to open the

rear shock absorber. Do not subject the rear shock absorber

to an open flame or any other source ofhigh heat. High heat can cause an ex-plosion due to excessive gas pressure.

Do not deform or damage the rearshock absorber in any way. If the rearshock absorber, or both are damaged,damping performance will suffer.

EB706111

DISPOSING OF A REAR SHOCK ABSORBER

a. Gas pressure must be released beforedisposing of a rear shock absorber. To re-lease the gas pressure, drill a 2 3 mmhole through the gas cylinder at a point 15 20 mm from its end as shown 1 .

Wear eye protection to prevent eye dam-age from released gas or metal chips.

7-60

REAR SHOCK ABSORBER AND RELAY ARM CHAS

NOTE:

CAUTION:

NOTE:

NOTE:

EB706204

REMOVING THE REAR SHOCK ABSORBERASSEMBLY

1. Stand the motorcycle on a level surface.

Securely support the motorcycle so thatthere is no danger of it falling over.

Place the motorcycle on a suitable stand sothat the rear wheel is elevated.

2. Disconnect: battery leads

(from the battery terminals)

First, disconnect the negative lead 1 ,then the positive lead 2 .

3. Remove: battery

4. Remove: side covers connecting plate bolt 1 rear shock absorber assembly lower bolt

2

While removing the rear shock absorber as-sembly lower bolt, hold the swingarm so thatit does not drop down.

5. Remove: rear shock absorber assembly upper bolt

1 rear shock absorber assembly

Raise the swingarm and then remove therear shock absorber assembly from be-tween the swingarm and relay arm.

7-61

REAR SHOCK ABSORBER AND RELAY ARM CHAS

NOTE:

CAUTION:

EB706401

CHECKING THE REAR SHOCK ABSORBERASSEMBLY

1. Check: rear shock absorber rod

Bends/damage Replace the rear shockabsorber assembly.

rear shock absorberoil leaks Replace the rear shock absorb-er assembly.

springDamage/wear Replace the rear shockabsorber assembly.

bushingsDamage/wear Replace.

dust sealsDamage/wear Replace.

boltsBends/damage/wear Replace.

EB706701

INSTALLING THE REAR SHOCKABSORBER ASSEMBLY

1. Lubricate: spacers bearings

Recommended lubricantMolybdenum disulfide grease

2. Install: rear shock absorber assembly

Rear shock absorber assemblyupper nut

40 Nm (4.0 mkg)Rear shock absorber assemblylower nut

40 Nm (4.0 mkg)Relay-arm-to-frame-nut

48 Nm (4.8 mkg)

When installing the rear shock absorberassembly, lift up the swingarm.

Install the connecting arm front bolt fromthe right.

3. Connect: battery leads

(to the battery terminals)

First, connect the positive lead 1 , thenthe negative lead 2 .

7-62

115 Nm (11.5 mkg)

23 Nm (2.3 mkg)

7 Nm (0.7 mkg)

Order Job name/Part name Q’ty Remarks

123456789

Removing the swingarm and drivechainRear wheel

Rear shock absorber assemblyRelay armRear wheel sprocket

Drive chain guardBrake hose holderCaliper bracketCompression barDrive chain guidePivot shaftSwingarmDrive chainCover

121111112

Removing the parts in the order listed.

Refer to “REAR WHEEL, BRAKEDISC AND REAR WHEEL SPROCKET”section.Refer to “REAR SHOCK ABSORBERAND RELAY ARM” section.

Refer to “REMOVING THE ENGINE”section in chapter 4

SWINGARM AND DRIVE CHAIN CHAS

SWINGARM AND DRIVE CHAIN

7-63

115 Nm (11.5 mkg)

23 Nm (2.3 mkg)

7 Nm (0.7 mkg)

Order Job name/Part name Q’ty Remarks

101112

SpacerBearingWasher

122

For installation, reverse the removalprocedure.

SWINGARM AND DRIVE CHAIN CHAS

7-64

A

B

SWINGARM AND DRIVE CHAIN CHAS

NOTE:

NOTE:

NOTE:

EB707100

Before removing the drive sprocket, drivechain, and rear wheel, measure the drivechain slack and the length of a ten-link sec-tion of the drive chain.

EB707111

REMOVING THE SWINGARM1. Stand the motorcycle on a level surface.

Securely support the motorcycle so thatthere is no danger of it falling over.

Place the motorcycle on a suitable stand sothat the rear wheel is elevated.

2. Remove: side covers connecting plate bolt 1 rear shock absorber assembly lower bolt

2

When removing the rear shock absorber as-sembly lower bolt, hold the swingarm so thatit does not drop down.

3. Check: swingarm side play swingarm vertical movement

a. Check the tightening torque of the pivotshaft nut.

Pivot shaft nut115 Nm (11.5 mkg)

b. Check the swingarm side play A by mov-ing the swingarm from side to side.

c. If the swingarm side play is out of specifi-cation, check the spacers, bearings,washers, and dust covers.

Swingarm side play (at the endof the swingarm)

1 mm

d. Check the swingarm vertical movementB by moving the swingarm up and down.If swingarm vertical movement is notsmooth or if there is binding, check thespacers, bearings, washers, and dustcovers.

7-65

SWINGARM AND DRIVE CHAIN CHASEB707400

CHECKING THE SWINGARM1. Check: swingarm

Bends/cracks/damage Replace.

2. Check: pivot shaft

Roll the pivot shaft on a flat surface.Bends Replace.

Do not attempt to straighten a bent pivotshaft.

3. Wash: pivot shaft dust covers spacer washers bearings

Recommended cleaning solventKerosine

4. Check: dust covers 1 spacer 2 washers 3 oil seals 4

Damage/wear Replace. bearings 5

Damage/pitting Replace.

5. Check: connecting arms 6 relay arm 7

Damage/wear Replace.

7-66

SWINGARM AND DRIVE CHAIN CHAS

NOTE:

CAUTION:

EB707410

CHECKING THE DRIVE CHAIN1. Measure: ten-link section a of the drive chain

Out of specification Replace the drivechain.

Ten-link drive chain sectionlimit (maximum)

150 mm

While measuring the ten-link section, pushdown on the drive chain to increase its ten-sion.

Measure the length between drive chainroller 1 and 11 as shown.

Perform this measurement at two or threedifferent places.

2. Check: drive chain

Stiffness Clean and lubricate or replace.

3. Clean: drive chain

a. Wipe the drive chain with a clean cloth.b. Put the drive chain in kerosine and re-

move any remaining dirt.c. Remove the drive chain from the kerosine

and completely dry it.

This motorcycle has a drive chain withsmall rubber O-rings 1 between thedrive chain side plates. Never use high-pressure water or air, steam, gasoline,certain solvents (e.g., benzine), or acoarse brush to clean the drive chain.High-pressure methods could force dirtor water into the drive chain’s internals,and solvents will deteriorate the O-rings.A coarse brush can also damage the O-rings. Therefore, use only kerosine toclean the drive chain.

4. Check: O-rings 1

Damage Replace the drive chain. drive chain rollers 2

Damage/wear Replace the drive chain. drive chain side plates 3

Damage/wear Replace the drive chain.Cracks Replace the drive chain.

7-67

SWINGARM AND DRIVE CHAIN CHAS

NOTE:

5. Lubricate: drive chain

Recommended lubricantEngine oil or chain lubricantsuitable for O-ring chains

6. Check: drive sprocket rear wheel sprocket

More than 1/4 tooth a wear Replacethe drive chain sprockets as a set.Bent teeth Replace the drive chainsprockets as a set.

b Correct1 Drive chain roller2 Drive chain sprocket

EB707700

INSTALLING THE SWINGARM1. Lubricate: bearings spacers dust covers pivot shaft

Recommended lubricantMolybdenum disulfide grease

2. Install: drive chain swingarm 1 relay arm 2 left connecting plate 3 right connecting plate 4

Swingarm pivot shaft nut115 Nm (11.5 mkg)

Relay arm nut48 Nm (4.8 mkg)

Connecting plate nut48 Nm (4.8 mkg)

Install the swingarm bolt 5 from the left.

3. Install: rear shock absorber assembly rear wheel

Refer to “INSTALLING THE REARSHOCK ABSORBER ASSEMBLY” and“REAR WHEEL”.

7-68

SWINGARM AND DRIVE CHAIN CHAS

70 Nm (7.0 mkg)

NOTE:

CAUTION:

CAUTION:

4. Adjust: drive chain slack

Refer to “ADJUSTING THE DRIVE CHAINSLACK” in chapter 3.

Drive chain slack30 45 mm

EB707710

INSTALLING THE DRIVE CHAIN1. Lubricate: drive chain

Recommended lubricantEngine oil or chain lubricantsuitable for O-ring chains

2. Install: drive chain 1 drive sprocket 2 washer 3 drive sprocket nut 4

While applying the rear brake, tighten thedrive sprocket nut.

Never install a new drive chain onto worndrive chain sprockets; this will dramati-cally shorten the drive chain’s life.

5. Adjust: drive chain slack

Refer to “ADJUSTING THE DRIVE CHAINSLACK” in chapter 3.

Drive chain slack30 45 mm

A drive chain that is too tight will over-load the engine and other vital parts, andone that is too loose can skip and dam-age the swingarm or cause an accident.Therefore, keep the drive chain slackwithin the specified limits.

ELEC

8– +

ELEC

CHAPTER 8ELECTRICAL

ELECTRICAL COMPONENTS 8-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CIRCUIT DIAGRAM 8-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CHECKING SWITCHES 8-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

CHECKING STEPS 8-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SWITCH CONNECTION AS SHOWN IN THIS MANUAL 8-4. . . . . . . . . . . . . . . . . . . . SWITCH POSITION AND TERMINAL CONNECTION 8-5. . . . . . . . . . . . . . . . . . . . . .

IGNITION SYSTEM 8-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CIRCUIT DIAGRAM 8-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TROUBLESHOOTING 8-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

ELECTRIC STARTING SYSTEM 8-13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CIRCUIT DIAGRAM 8-13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . STARTING CIRCUIT OPERATION 8-14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TROUBLESHOOTING 8-15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . STARTER MOTOR 8-22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CHECKING THE STARTER MOTOR 8-23. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

CHARGING SYSTEM 8-25. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CIRCUIT DIAGRAM 8-25. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TROUBLESHOOTING 8-26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

LIGHTING SYSTEM 8-29. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CIRCUIT DIAGRAM 8-29. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TROUBLESHOOTING 8-30. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . LIGHTING SYSTEM CHECK 8-33. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

SIGNAL SYSTEM 8-36. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CIRCUIT DIAGRAM 8-36. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TROUBLESHOOTING 8-38. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SIGNAL SYSTEM CHECK 8-40. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

COOLING SYSTEM 8-51. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CIRCUIT DIAGRAM 8-51. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TROUBLESHOOTING 8-52. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

FUEL PUMP SYSTEM 8-56. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CIRCUIT DIAGRAM 8-56. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . FUEL PUMP CIRCUIT OPERATION 8-57. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TROUBLESHOOTING 8-58. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . FUEL PUMP TEST 8-61. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

SELF-DIAGNOSIS 8-62. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TROUBLESHOOTING 8-63. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

ELEC

8-1

ELECTRICAL COMPONENTS ELEC

13 Rectifier /Regulator14 Thermo switch (warning light)15 Thermo switch (fan motor)16 Horn17 Diode

7 Starting circuit cut-off relay8 Flasher relay9 Sidestand switch10 Neutral switch11 Oil level gauge12 Ignition coil

1 Main switch2 Fuel sender3 Rear brake switch4 Battery5 Ignitor unit6 Starter relay

EB800000

ELECTRICALELECTRICAL COMPONENTS

8-2

CIRCUIT DIAGRAM ELEC

CIRCUIT DIAGRAM

8-3

1 A.C. magneto2 Rectifier regulator3 Main switch4 Battery5 Fuse (back up)6 Fuse (main)7 Starter relay8 Starter motor9 Starting circuit cut-off relay10 Fuel pump relay11 Ignitor unit12 Ignition coil13 Spark plug14 Pickup coil15 Throttle position sensor16 Neutral switch17 Speed sensor18 Fuel sender19 Thermo switch (warning light)20 Diode21 Fuel pump22 Sidestand switch23 Speedometer24 Tachometer25 Fuel meter26 Fuel level warning light27 Engine temperature warning light28 Neutral indicator light29 Oil level warning light

CIRCUIT DIAGRAM ELEC

30 High beam indicator light31 Turn indicator lights32 Meter lights33 Clutch switch34 Oil level switch35 Flasher relay36 Horn37 Pass switch38 Dimmer switch39 Horn switch40 Turn switch41 Front turn signal lights42 Rear turn signal lights43 Head light44 Tail /Brake light45 Auxiliary light46 Fan motor47 Thermo switch (fan motor)48 Fuse (fan)49 Fuse (head)50 Rear brake switch51 Fuse (signal)52 Front brake switch53 Lights switch54 Engine stop switch55 Starter switch56 Fuse (ignition)57 Alarm (option)

NOTE:

B Black

Br Brown

Ch Chocolate

Dg Dark green

G Green

L Blue

Lg Light green

O Orange

Sb Sky blue

P Pink

R Red

Y Yellow

W White

B/L Black/Blue

B/R Black/Red

B/Y Black/Yellow

Br/L Brown/Blue

Br/W Brown/White

G/R Green/Red

G/W Green/White

G/Y Green/Yellow

L/B Blue/Black

L/Y Blue/Yellow

L/W Blue/White

L/R Blue/Red

R/B Red/Black

R/Y Red/Yellow

R/W Red/White

Y/B Yellow/Black

Y/R Yellow/White

W/B White/Black

W/G White/Green

Starter switch is closed while the button (switch) is pushed. Sidestand switch is closed while the side stand is upped. Clutch switch is closed while the clutch lever is pulled. Brake switch is closed while the brake is applied.

COLOR CODE

8-4

CHECKING SWITCHES ELEC

NOTE:

YP-N

CHECKING SWITCHESCHECKING STEPSUsing pocket tester, check switches for continu-ity between their terminals to determine whetherthey are correctly connected.Replace the switch component if any of the com-binations does not produce the correct reading.

Pocket tester:90890-03112

Turn the switch to the “ON”, “OFF”positions several times.

Adjust the pocket tester to correct “0”position before checking switches.

Set the pocket tester selector to “1” Ω.

SWITCH CONNECTION AS SHOWN IN THISMANUALThis manual contains connection charts, like theone shown on the left, showing the terminal con-nections of switches (e.g. the main switch, han-dlebar switch, brake switch, lighting switch etc.)

The column on the extreme left indicates the dif-ferent switch positions, the top line indicates thecolors of the leads connected to the terminals onthe switch.

“ ” indicates terminals between whichthere is continuity, i.e. a closed circuit, in thegiven switch position.

In this chart:“Br and R” have continuity with the switch in the“ON” position.

8-5

Before checking a switch refer to the checkingswitches as shown in the left page and checkfor the correct terminal connections (closedcircuit) according to the color combinationsshown in the chart.Poor connection, fault Repair or replace.

* indicates coupler positions.

CHECKING SWITCHES ELECYP******

SWITCH POSITION AND TERMINAL CONNECTION

8-6

Fus

e (m

ain)

3 4 622

11

12 13 14 16 5654

Mai

n sw

itch

Bat

tery

Sid

esta

nd s

witc

h

Igni

tor

unit

Igni

tion

coil

Spa

rk p

lug

Pic

kup

coil

Neu

tral

sw

itch

Fus

e (ig

nitio

n)E

ng

ine

sto

p s

wit

ch

IGNITION SYSTEM ELECEB802000

IGNITION SYSTEMCIRCUIT DIAGRAM

8-7

IGNITION SYSTEM ELEC

NOTE:

EB802011

1. Fuses (main and ignition)

Remove the fuses. Connect the pocket tester (Ω 1) to the

fuses. Check the fuses for continuity. Replace the fuses.

CONTINUITY

NO CONTINUITY

Open-circuit voltage:12.8 V or more at 20 C

EB802012

2. Battery

Check the battery condition.Refer to “BATTERY INSPECTION” inCHAPTER 3.

Clean the battery terminals. Recharge or replace the battery.

CORRECT

INCORRECT

EB802010

TROUBLESHOOTING

IF THE IGNITION SYSTEM FAILS TO OPERATE (NO SPARK OR INTERMITTENT SPARK):

ProcedureCheck:

1. Fuses (main and ignition)2. Battery3. Spark plugs4. Ignition spark gap5. Spark plug cap resistance6. Ignition coil resistance7. Main switch

8. Engine stop switch9. Neutral switch

10. SIdestand switch11. Diode (starting circuit cut-off relay)12. Pickup coil resistance13. Wiring connection (the entire ignition

system)

Remove the following part(s) before trouble-shooting:

1) Seat2) Fuel tank3) Side cover (left) Use the following special tool(s) for trouble-

shooting.

Ignition checker:90890-06754

Pocket tester:90890-03112

8-8

EB802013

3. Spark plugs

Check the spark plug condition. Check the spark plug type. Check the spark plug gap.

Refer to “SPARK LUG INSPECTION” inCHAPTER 3.

Standard spark plug:CR9E, CR8E/U27ESR-N, U24ESR-NNGK/NIPPONDENSO

Spark plug gap:0.7 0.8 mm

CORRECT

INCORRECT

EB802014

4. Ignition spark gap

Disconnect the spark plug cap from thespark plug.

Connect the ignition checker as shown. Spark plug cap

Turn the main switch to “ON”.

1

Check the ignition spark gap . Crank the engine by pushing the starter

switch, and increase the spark gap until amisfire occurs.

The ignition system is not faulty.Minimum spark gap:6.0 mm

OUT OFSPECIFICATIONOR NO SPARK

MEETS SPECIFICATIONa

Repair or replace the spark plugs.

2

IGNITION SYSTEM ELEC

8-9

EB802015

5. Spark plug cap resistance

Remove the spark plug cap. Connect the pocket tester (Ω 1k) to the

spark plug cap.

Check if the spark plug cap has the speci-fied resistance.

Replace the spark plug cap.

Spark plug cap resistance:10 kΩ at 20C

OUT OF SPECIFICATION

6. Ignition coil resistance

Disconnect the ignition coil connector fromthe wire harness.

Connect the pocket tester (Ω 1) to theignition coil.

Check if the secondary coil has the speci-fied resistance.

Replace the ignition coil.

Secondary coil resistance:12 18 kΩ at 20C

BOTH MEETSPECIFICATION

OUT OF SPECIFICATION

Check if the primary coil has the specifiedresistance.

Primary coil resistance:1.87 2.53 Ω at 20C

MEETSSPECIFICATION

EB802016

Connect the pocket tester (Ω 1k) to theignition coil.

Tester (+) lead Red/Black terminalTester (–) lead Orange (Gray) terminal

Tester (+) lead spark plug leadTester (–) lead spark plug lead

12

IGNITION SYSTEM ELEC

8-10

EB802017

7. Main switch

Disconnect the main switch couplers fromthe wire harness.

Check for continuity as follows:Red – Brown/Blue

Replace the main switch.

CONTINUITY

NO CONTINUITY

1

EB802018

8. Engine stop switch

Disconnect the right handlebar switch cou-pler from the wire harness.

Check for continuity as follows:Red/White – Red/Black

Replace the right handlebar switch.

CONTINUITY

NO CONTINUITY

1

EB802019

9. Neutral switch

Disconnect the neutral switch/ lead from theneutral switch.

Check for continuity as follows:Neutral switch terminal – Ground1

2

2

IGNITION SYSTEM ELEC

8-11

Replace the main switch.

CONTINUITY

NO CONTINUITY

EB80201A

10. Sidestand switch

Disconnect the sidestand switch couplerfrom the wire harness.

Check for continuity as follows:Black – Black

Replace the sidestand switch.

NO CONTINUITY

1 2

CONTINUITY

11. Diode (starting circuit cut-off relay unit)

Remove the relay unit from the wire har-ness.

Check for continuity as follows:Blue/Yellow – Light green1 2

IGNITION SYSTEM ELEC

8-12

Tester lead Blue/YellowTester lead Light green

Replace the relay unit.CORRECT

INCORRECT1

Tester (+) lead Yellow terminalTester (–) lead Blue terminal

EB80201C

12. Pickup coil resistance

Disconnect the pickup coil coupler from thewire harness.

Connect the pocket tester (Ω 100) to thepickup coil terminal.

1

Check if the pickup coil has the specified re-sistance.

Replace the pickup coil.

Pickup coil resistance:189 231 Ω at 20C(Yellow – Blue)

MEETSSPECIFICATIONS

OUT OF SPECIFICATION

EB80201D

13. Wiring connection

Check the connections of the entire ignitionsystem.Refer to “CIRCUIT DIAGRAM”.

Properly connect the ignition system.

CORRECT

POOR CONNECTION

Replace the ignitor unit.

Tester lead Blue/YellowTester lead Light green

Continuity

NoContinuity

2

12

2

IGNITION SYSTEM ELEC

8-13

5416 22 33 55 56

Eng

ine

stop

sw

itch

Sta

rter

mot

orS

tart

ing

circ

uit c

ut-o

ff re

lay

Neu

tral

sw

itch

Sid

esta

nd s

witc

hC

lutc

h sw

itch

Sta

rt s

witc

hFu

se (

ign

itio

n)

8 9

Fus

e (m

ain)

3 4 6

Mai

n sw

itch

Bat

tery

Sta

rter

rel

ay7

ELECTRIC STARTING SYSTEM ELECEB803000

ELECTRIC STARTING SYSTEMCIRCUIT DIAGRAM

8-14

ELECTRIC STARTING SYSTEM ELECEB803010

STARTING CIRCUIT OPERATIONThe starting circuit on this model consists of thestarter motor, starter relay, and the starting cir-cuit cut-off relay. If the engine stop switch is on“RUN” and the main switch is on “ON” (bothswitches are closed), the starter motor can op-erate only if.

The transmission is in neutral (the neutralswitch is closed).

or if

The clutch lever is pulled to the handlebar(the clutch switch is closed) and the side-stand is up (the sidestand switch is closed).

The starting circuit cut-off relay prevents thestarter from operating when neither of theseconditions have been met. In this instance, thestarting circuit cut-off relay is open so currentcannot reach the starter motor.

When at least one of the above conditions havebeen met however, the starting circuit cut-offrelay is closed, and the engine can be started bypressing the starter switch.

WHEN THE TRANSMISSION IS INNEUTRAL

WHEN THE SIDESTAND IS UP ANDTHE CLUTCH LEVER IS PULLED IN

1 Battery2 Fuse (main)3 Main switch4 Fuse (ignition)5 Engine stop switch6 Starting circuit cut-off relay7 Diode8 Clutch switch9 Sidestand switch10 Neutral switch11 Start switch12 Starter relay13 Starter motor

8-15

ELECTRIC STARTING SYSTEM ELEC

NOTE:

EB802011

1. Fuses (main and ignition)

Remove the fuses. Connect the pocket tester (Ω 1) to the

fuses. Check the fuses for continuity. Replace the fuses.

CONTINUITY

NO CONTINUITY

Open-circuit voltage:12.8 V or more at 20 C

EB802012

2. Battery

Check the battery condition.Refer to “BATTERY INSPECTION” inCHAPTER 3.

Clean the battery terminals. Recharge or replace the battery.

CORRECT

INCORRECT

EB803020

TROUBLESHOOTING

IF THE STARTER MOTOR FAILS TO OPERATE:

ProcedureCheck:

1. Fuses (main and ignition)2. Battery3. Starter motor4. Starting circuit cut-off relay5. Starter relay6. Main switch7. Engine stop switch

8. Neutral switch9. Sidestand switch

10. Clutch switch11. Start switch12. Diode (starting circuit cut-off relay)13. Wiring connection (the entire starting

system)

Remove the following part(s) before trouble-shooting:

1) Seat2) Fuel tank3) Side cover (left) Use the following special tool(s) for trouble-

shooting.

Pocket tester:90890-03112

8-16

A wire that is used as a jumper lead musthave the equivalent capacity or more asthat of the battery lead, otherwise thejumper lead may burn.

This check is likely to reduce sparks, so besure that no flammable gas or fluid is in thevicinity.

EB803021

3. Starter motor

Connect the battery positive terminal andstarter motor cable using a jumper lead

. Check the operation of the starter motor.

Repair or replace the starter motor.

MOVES

DOES NOT MOVE

1

Battery (+) terminal

Red/Black terminal Battery (–) terminal

Black/Yellow terminal

EB803023

4. Starting circuit cut-off relay (relay unit)

Remove the relay unit from the wire har-ness.

Connect the pocket tester (Ω 1) and bat-tery (12 V) to the relay unit terminals.

Check the starting circuit cut-off relay forcontinuity.

Replace the starting circuit cut-off relay.CONTINUITY

NO CONTINUITY

Tester (+) lead Blue/White terminalTester (–) lead Black terminal

23

1

2

34

ELECTRIC STARTING SYSTEM ELEC

8-17

EB803024

5. Starter relay

Disconnect the relay unit coupler from thewire harness.

Connect the pocket tester (Ω 1) and bat-tery (12 V) to the relay unit coupler termi-nals.

Replace the starter relay.

NO CONTINUITY

CONTINUITY

EB802017

6. Main switch

Disconnect the main switch couplers fromthe wire harness.

Check for continuity as follows:Red – Brown/Blue

Replace the main switch.

CONTINUITY

NO CONTINUITY

1 2

Battery (+) terminal

Red/White terminal Battery (–) terminal

Blue/White terminal

3

4

Tester (+) lead Red terminalTester (–) lead Black terminal

34

Check the starter relay for continuity.

ELECTRIC STARTING SYSTEM ELEC

8-18

EB802018

7.Engine stop switch

Disconnect the right handlebar switch cou-pler from the wire harness.

Check for continuity as follows:Red/White – Red/White

Replace the right handlebar switch.

CONTINUITY

NO CONTINUITY

1

EB802019

8. Neutral switch

Disconnect the neutral switch/ lead from theneutral switch.

Check for continuity as follows:Neutral switch terminal – Ground

Replace the neutral switch.

CONTINUITY

NO CONTINUITY

1

2

ELECTRIC STARTING SYSTEM ELEC

8-19

EB80201A

9. Sidestand switch

Disconnect the sidestand switch couplerfrom the wire harness.

Check for continuity as follows:Black – Black

Replace the sidestand switch.

CONTINUITY

NO CONTINUITY

1

EB803025

10. Clutch switch

Disconnect the clutch switch coupler fromthe wire harness.

Check for continuity as follows:Black/Yellow – Blue/Yellow

Replace the clutch switch.

CONTINUITY

NO CONTINUITY

1

2

2

ELECTRIC STARTING SYSTEM ELEC

8-20

EB803027

11. Start switch

Disconnect the right handlebar switch cou-pler from the wire harness.

Check for continuity as follows:Blue/White – Black

Replace the right handlebar switch.

CONTINUITY

NO CONTINUITY

1

EB803026

12. Diode (starting circuit cut-off relay)

Remove the relay unit from the wire har-ness.

Check for continuity as follows:Black/Yellow – Light green

Replace the relay unit.

CORRECT

INCORRECT

1

2

2

Tester (+) lead Black/YellowTester (–) lead Light green

1

Tester (+) lead Light greenTester (–) lead Black/Yellow

Continuity

NoContinuity

2

12

ELECTRIC STARTING SYSTEM ELEC

8-21

EB803028

13. Wiring connection

Check the connections of the entire startingsystem.Refer to “CIRCUIT DIAGRAM”.

Properly connect the starting system.

POOR CONNECTION

ELECTRIC STARTING SYSTEM ELEC

8-22

Order Job name/Part name Q’ty Remarks

12

Starter motor removalStarter motorStarter motor lead

Starter motor disassemblyFront bracketWashersRear bracketShimsBrush holder/BrushArmature ass’y

11

1121

1/11

Remove the parts in order.

Reverse the removal procedure forinstallation.

Disassembly the parts in order.

Reverse the disassembly procedure forassembly.

123456

ELECTRIC STARTING SYSTEM ELECEB803030

STARTER MOTOR

8-23

ELECTRIC STARTING SYSTEM ELEC

CHECKING THE STARTER MOTOR1. Measure: Brush length a

Out of specification Replace.

Brush length wear limit:4 mm

2. Measure: Brush spring force

Fatigue/out of specification Replace asa set.

Brush spring force:780 1,020 g

3. Inspect: Commutator

Dirty Clean it with #600 grit sandpaper.

4. Inspect: Armature coil resistances (insulation/con-

tinuity)Defects Replace the starter motor.

Inspection steps: Connect the pocket tester for the continuity

1 and insulation 2 checks. Measure the armature coil resistances.

Armature coil continuityresistance 1 :

0.0015 0.0025 Ω at 20CArmature coil insulationresistance 2 :

More than 1 M Ω at 20C

If the resistance is incorrect, replace thestarter motor.

8-24

ELECTRIC STARTING SYSTEM ELEC

NOTE:

5. Measure: Commutator diameter a

Out of specification Replace the startermotor.

Commutator wear limit:27 mm

6. Measure: Mica undercut a

Out of specification Scrape the mica tothe proper measurement using a hacksawblade which has been grounded to fit thecommutator.

Mica undercut:0.7 mm

The mica insulation of the commutator mustbe undercut to ensure proper operation ofthe commutator.

8-25

Bat

tery

1 2 4

AC

mag

neto

Rec

tifie

r/re

gula

tor

Fus

e (m

ain)

6

CHARGING SYSTEM ELECEB804000

CHARGING SYSTEMCIRCUIT DIAGRAM

8-26

CHARGING SYSTEM ELEC

NOTE:

EB802011

1. Fuses (main)

Remove the fuses. Connect the pocket tester (Ω 1) to the

fuses. Check the fuses for continuity. Replace the fuses.

CONTINUITY

NO CONTINUITY

Open-circuit voltage:12.8 V or more at 20 C

EB802012

2. Battery

Check the battery condition.Refer to “BATTERY INSPECTION” inCHAPTER 3.

Clean the battery terminals. Recharge or replace the battery.

CORRECT

INCORRECT

EB803020

TROUBLESHOOTING

IF THE BATTERY IS NOT CHARGED:

ProcedureCheck:

1. Fuse (main)2. Battery3. Charging voltage

4. Stator coil resistance5. Wiring connections (the entire charging

system)

Remove the following part(s) before trouble-shooting:

1) Seat2) Side cover (left) Use the following special tool(s) for trouble-

shooting.

Engine tachometer:90890-03113

Pocket tester:90890-03112

8-27

Stator coil resistance:0.36 0.44 Ω at 20C

EB804011

3. Charging voltage

Connect the engine tachometer to the sparkplug lead.

Connect the pocket tester (DC 20 V) to thebattery.

The charging circuit is not faulty.

Charging voltage = measuredvoltage-terminal voltage:

0.2 2.5 V up

OUT OFSPECIFICATION

MEETS SPECIFICATION

EB804012

4. Stator coil resistance

Remove the generator cover. Connect the pocket tester (Ω 1) to the

stator coils.

Replace the stator coil assembly.BOTH MEETSPECIFICATION

OUT OF SPECIFICATION

Tester (+) lead White terminalTester (–) lead White terminal

Tester (+) lead White terminalTester (–) lead White terminal

Measure the stator coil resistance.

Tester (+) lead Battery (+) terminalTester (–) lead Battery (–) terminal

Measure the battery terminal voltage. Start the engine and accelerate to about

5,000 r/min. Check the terminal voltage.

12

13

NOTE:Use a fully charged battery.

1

CHARGING SYSTEM ELEC

8-28

CHARGING SYSTEM ELEC

EB804015

5. Wiring connections

Check the connections of the entire charg-ing system.Refer to “CIRCUIT DIAGRAM”.

Properly connect the charging system.

POOR CONNECTION

Replace the rectifier/regulator.

CORRECT

8-29

3 4

38

30 32

37 43 44M

ain

switc

hB

atte

ry

Dim

mer

sw

itch

Hig

h be

am in

dica

tor

light

Met

er li

ght

Pas

s sw

itch

Hea

dlig

htTa

il/b

rake

lig

ht

4945 53F

use

(hea

d)A

uxili

ary

light

Ligh

ts s

witc

h

6F

use

(mai

n)

LIGHTING SYSTEM ELECEB805000

LIGHTING SYSTEMCIRCUIT DIAGRAM

8-30

LIGHTING SYSTEM ELEC

NOTE:

EB802011

1. Fuses (main and head)

Remove the fuses. Connect the pocket tester (Ω 1) to the

fuses. Check the fuses for continuity. Replace the fuses.

CONTINUITY

NO CONTINUITY

Open-circuit voltage:12.8 V or more at 20 C

EB802012

2. Battery

Check the battery condition.Refer to “BATTERY INSPECTION” inCHAPTER 3.

Clean the battery terminals. Recharge or replace the battery.

CORRECT

INCORRECT

EB803020

TROUBLESHOOTING

IF THE HEADLIGHT, HIGH BEAM INDICATOR LIGHTS, TAILLIGHT, AUXILIARY LIGHTAND/OR METER LIGHT FAIL TO COME ON:

ProcedureCheck:

1. Fuses (main and head)2. Battery3. Main switch4. Lights switch (for Europe)

5. Dimmer switch6. Pass switch (for Europe and Australia)7. Wiring connections (the entire lighting

system)

Remove the following part(s) before trouble-shooting:

1) Seat2) Fuel tank3) Side cover (left)4) Front cowling assembly Use the following special tool(s) for trouble-

shooting.

Pocket tester:90890-03112

8-31

Disconnect the right handlebar switch cou-pler from the wire harness.

Turn the lights switch to “ON” or “PO”. Check for continuity as follows:

Red/Yellow – Blue Turn the lights switch to “ON”. Check for continuity as follows:

Red/Yellow – BlueRed/Yellow – Blue/Black1

1 2

1 2

1 221

EB802017

3. Main switch

Disconnect the main switch couplers fromthe wire harness.

Check for continuity as follows:Red – Brown/BlueBlue/Red – Blue

Replace the main switch.

CONTINUITY

NO CONTINUITY

EB805011

The lights switch is faulty. Replace the righthandlebar switch.

CONTINUITY

NO CONTINUITY

4. Lights switch

2

LIGHTING SYSTEM ELEC

8-32

5. Dimmer switch

Disconnect the left handlebar switch cou-plers from the wire harness.

Turn the dimmer switch to “HI”. Check for continuity as follows:

Blue/Black – Yellow

The dimmer switch is faulty.Replace the left handlebar switch.

CONTINUITY

NO CONTINUITY1

EB805012

6. Pass switch

Disconnect the left handlebar switch cou-pler from the wire harness.

Turn the pass switch to “ON”. Check for continuity as follows:

Red/Yellow – Yellow

The pass switch is faulty. Replace the lefthandlebar switch.

CONTINUITY

NO CONTINUITY

2

2

EB805013

7. Wiring connections

Check the connections of the entire lightingsystem.Refer to “CIRCUIT DIAGRAM”. Properly connect the lighting system.

CORRECT

POOR CONNECTION

Check the condition of each of the lightingsystem’s circuits.Refer to “LIGHTING SYSTEM CHECK”.

1

LIGHTING SYSTEM ELEC

8-33

LIGHTING SYSTEM ELEC

B

1. Bulb and bulb socket.

Check the bulb and bulb socket for continu-ity.

Replace the bulb and/or bulb socket.CONTINUITY

NO CONTINUITY

When the dimmer switch is on “LO”.When the dimmer switch is ON “HI”.

2. Voltage

Connect the pocket tester (DC 20 V) to theheadlight and high beam indicator light cou-plers.

Headlight:Tester (+) lead

Black/Yellow lead orBlack/Blue lead

Tester (–) lead Black leadHigh beam indicator light:

Tester (+) lead Yellow leadTester (–) lead Black lead

1

Turn the main switch to “ON”. Turn the light switch to “ON”. Turn the dimmer switch to “LO” or “HI”. Check the voltage (12 V) of the “Black/Yel-

low”, “Black/Blue” and “Yellow” leads on thebulb socket connector. The wiring circuit from the main switch to the

bulb socket connector is faulty, repair it.MEETSSPECIFICATION

OUT OF SPECIFICATION

This circuit is not faulty.

Headlight connector

23

45

Meter connector

AB

EB805020

LIGHTING SYSTEM CHECK1. If the headlight and the high beam indicator

light fail to come on:

8-34

LIGHTING SYSTEM ELEC

1

1. Bulb and bulb socket

Check the bulb and bulb socket for continu-ity.

Replace the bulb and/or bulb socket.CONTINUITY

NO CONTINUITY

Tester (+) lead Blue terminalTester (–) lead Black terminal

2. Voltage

Connect the pocket tester (20 V) to the bulbsocket coupler.

Turn the main switch to “ON”. Turn the light switch to “ON” or “PO”. Check the voltage (12 V) of the “blue” lead

on the bulb socket connector.

The wiring circuit from the main switch to thebulb socket connector is faulty, repair it.

MEETSSPECIFICATION

OUT OF SPECIFICATION

The circuit is not faulty.

2

2

1

1. Bulb and bulb socket

Check the bulb and bulb socket for continu-ity.

Replace the bulb and/or bulb socket.CONTINUITY

NO CONTINUITY

Tester (+) lead Blue terminalTester (–) lead Black terminal

2. Voltage

Connect the pocket tester (DC 20 V) to thebulb socket connector.

12

EB805021

2. If the meter light fails to come on:

EB805022

3. If the taillight fails to come on:

8-35

LIGHTING SYSTEM ELEC

Turn the main switch to “ON”. Turn the lights switch to “ON” or “PO”. Check the voltage (12 V) of the “Blue” lead

on the bulb socket connector.

The wiring circuit from the main switch to thebulb socket connector is faulty, repair it.

MEETSSPECIFICATION

OUT OF SPECIFICATION

This circuit is not faulty.

1

1. Bulb and bulb socket

Check the bulb and bulb socket for continu-ity.

Replace the bulb and/or bulb socket.CONTINUITY

NO CONTINUITY

Tester (+) lead Blue/Red terminalTester (–) lead Black terminal

2. Voltage

Connect the pocket tester (DC 20 V) to thebulb socket connector.

Turn the main switch is “ON”. Turn the lights switch to “ON” or “PO”. Check the voltage (12 V) of the “Blue/Red”

lead on the bulb socket connector.

The wiring circuit from the main switch to thebulb socket connector is faulty, repair it.

MEETSSPECIFICATION

OUT OF SPECIFICATION

This circuit is not faulty.

2

EB805023

4. If the auxiliary light fails to come on:

8-36

SIGNAL SYSTEM ELECEB806000

SIGNAL SYSTEMCIRCUIT DIAGRAM

8-37

3 Main switch4 Battery6 Fuse (main)16 Neutral switch18 Fuel sender20 Diode25 Fuel meter26 Fuel level warning light28 Neutral indicator light29 Oil level warning light31 Turn indicator light34 Oil level switch35 Flasher relay36 Horn39 Horn switch40 Turn switch41 Front turn signal light42 Rear turn signal light44 Tail /brake light50 Rear brake switch51 Fuse (signal)52 Front brake switch55 Start switch

SIGNAL SYSTEM ELEC

8-38

SIGNAL SYSTEM ELEC

NOTE:

EB802011

1. Fuses (main and signal)

Remove the fuses. Connect the pocket tester (Ω 1) to the

fuses. Check the fuses for continuity. Replace the fuses.

CONTINUITY

NO CONTINUITY

Open-circuit voltage:12.8 V or more at 20 C

EB802012

2. Battery

Check the battery condition.Refer to “BATTERY INSPECTION” inCHAPTER 3.

Clean the battery terminals. Recharge or replace the battery.

CORRECT

INCORRECT

B806010

TROUBLESHOOTING

IF THE TURN SIGNAL LIGHT, BRAKE LIGHT AND/OR INDICATOR LIGHT FAIL TO COME ON:IF THE HORN FAILS TO SOUND:

ProcedureCheck:

1. Fuses (main and signal)2. Battery3. Main switch4. Wiring connection (the entire signal system)

Remove the following part(s) before trouble-shooting:

1) Seat2) Fuel tank3) Side covers (left and right)4) Front cowling assembly Use the following special tool8s) for trouble-

shooting.

Pocket tester:90890-03112

8-39

EB802017

3. Main switch

Disconnect the main switch coupler fromthe wire harness.

Check for continuity as follows:Red – Brown/Blue

Replace the main switch.

CONTINUITY

NO CONTINUITY

2

EB806011

4. Wiring connections

Check the connections of the entire signalsystem.Refer to “CIRCUIT DIAGRAM”. Properly connect the signal system.

CORRECT

POOR CONNECTION

Check the condition of each of the signal sys-tem’s circuits.Refer to “SIGNAL SYSTEM CHECK”.

1

SIGNAL SYSTEM ELEC

8-40

SIGNAL SYSTEM ELEC

1

Disconnect the left handlebar switch cou-pler from the wire harness.

Disconnect the “Black/White” lead at thehorn terminal.

Check for continuity as follows:Pink – Black

Replace the left handlebar switch.

CONTINUITY

NO CONTINUITY

Tester (+) lead Brown leadTester (–) lead Frame ground

2. Voltage

Connect the pocket tester (DC 20 V) to thehorn lead.

Turn the main switch to “ON”. Check the voltage (12 V) of the “Brown” lead

at the horn terminal.