22
1
3
5
7
9
2
4
8
6
2425
2321
192018
161715
1413
1112
10
GEN
INFOSPEC
ENG
FI ELECCOOL CHK
ADJ
TRBL
SHTG
CHAS
EAS00008
SYMBOLS
The following symbols are not relevant to every
vehicle.
Symbols
1 to 9 indicate the subject of each
chapter.
1General information
2Specifications
3Periodic checks and adjustments
4Chassis
5Engine
6Cooling system
7Fuel injection system
8Electrical system
9Troubleshooting
Symbols 10 to 17 indicate the following.
10Serviceable with engine mounted
11Filling fluid
12Lubricant
13Special tool
14Tightening torque
15Wear limit, clearance
16Engine speed
17Electrical data
Symbols 18 to 23 in the exploded diagrams indi-
cate the types of lubricants and lubrication
points.
18Engine oil
19Gear oil
20Molybdenum-disulfide oil
21Wheel-bearing grease
22Lithium-soap- based grease
23Molybdenum-disulfide grease
Symbols 24 to 25 in the exploded diagrams indi-
cate the following.
24Apply locking agent (LOCTITE)
25Replace the part
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CHAPTER 1
GENERAL INFORMATION
MOTORCYCLE IDENTIFICATION1-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
VEHICLE IDENTIFICATION NUMBER 1-1. . . . . . . . . . . . . . . . . . . . . . . .
MODEL LABEL 1-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
FEATURES1-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
INSTRUMENT FUNCTIONS 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
IMPORTANT INFORMATION1-6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PREPARATION FOR REMOVAL AND DISASSEMBLY 1-6. . . . . . . . .
REPLACEMENT PARTS 1-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
GASKETS, OIL SEALS AND O-RINGS 1-6. . . . . . . . . . . . . . . . . . . . . . .
LOCK WASHERS / PLATES AND COTTER PINS 1-7. . . . . . . . . . . . . .
BEARINGS AND OIL SEALS 1-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CIRCLIPS 1-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CHECKING THE CONNECTIONS1-8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SPECIAL TOOLS1-9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CHAPTER 2
SPECIFICATIONS
GENERAL SPECIFICATIONS2-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ENGINE SPECIFICATIONS2-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CHASSIS SPECIFICATIONS2-11 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ELECTRICAL SPECIFICATIONS2-15 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CONVERSION TABLE2-18 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
GENERAL TIGHTENING TORQUE SPECIFICATIONS2-18 . . . . . . . . . . . .
TIGHTENING TORQUES2-19 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ENGINE TIGHTENING TORQUES 2-19. . . . . . . . . . . . . . . . . . . . . . . . . . .
CHASSIS TIGHTENING TORQUES 2-23. . . . . . . . . . . . . . . . . . . . . . . . . .
LUBRICATION POINTS AND LUBRICANT TYPES2-25 . . . . . . . . . . . . . . .
ENGINE 2-25. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CHASSIS 2-26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
COOLING SYSTEM DIAGRAMS2-27 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ENGINE OIL LUBRICATION CHART2-29 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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LUBRICATION DIAGRAMS2-30 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CABLE ROUTING2-35 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CHAPTER 3
PERIODIC CHECKS AND ADJUSTMENTS
INTRODUCTION3-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PERIODIC MAINTENANCE CHART FOR THE EMISSION
CONTROL SYSTEM3-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
GENERAL MAINTENANCE AND LUBRICATION CHART3-1 . . . . . . . . .
SEATS3-3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
FUEL TANK3-4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
REMOVING THE FUEL TANK 3-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
REMOVING THE FUEL PUMP 3-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
INSTALLING THE FUEL PUMP 3-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
INSTALLING THE FUEL TANK 3-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
COWLINGS3-7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
FRONT COWLING AND SIDE COWLINGS 3-7. . . . . . . . . . . . . . . . . . .
REAR COWLING 3-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
REMOVAL 3-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
INSTALLATION 3-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
AIR FILTER CASE3-10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ENGINE3-11 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ADJUSTING THE VALVE CLEARANCE 3-11. . . . . . . . . . . . . . . . . . . . . .
SYNCHRONIZING THE THROTTLE BODIES 3-17. . . . . . . . . . . . . . . . .
ADJUSTING THE EXHAUST GAS VOLUME 3-19. . . . . . . . . . . . . . . . . .
ADJUSTING THE ENGINE IDLING SPEED 3-21. . . . . . . . . . . . . . . . . . .
ADJUSTING THE THROTTLE CABLE FREE PLAY 3-22. . . . . . . . . . . .
CHECKING THE SPARK PLUGS 3-23. . . . . . . . . . . . . . . . . . . . . . . . . . . .
MEASURING THE COMPRESSION PRESSURE 3-24. . . . . . . . . . . . . .
CHECKING THE ENGINE OIL LEVEL 3-26. . . . . . . . . . . . . . . . . . . . . . . .
CHANGING THE ENGINE OIL 3-28. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
MEASURING THE ENGINE OIL PRESSURE 3-29. . . . . . . . . . . . . . . . .
ADJUSTING THE CLUTCH CABLE FREE PLAY 3-31. . . . . . . . . . . . . . .
REPLACING THE AIR FILTER ELEMENT 3-32. . . . . . . . . . . . . . . . . . . .
CHECKING THE FUEL AND BREATHER HOSES 3-33. . . . . . . . . . . . .
CHECKING THE CRANKCASE BREATHER HOSE 3-34. . . . . . . . . . . .
CHECKING THE EXHAUST SYSTEM 3-35. . . . . . . . . . . . . . . . . . . . . . . .
ADJUSTING THE EXUP CABLES 3-36. . . . . . . . . . . . . . . . . . . . . . . . . . .
CHECKING THE COOLANT LEVEL 3-37. . . . . . . . . . . . . . . . . . . . . . . . . .
CHECKING THE COOLING SYSTEM 3-38. . . . . . . . . . . . . . . . . . . . . . . .
CHANGING THE COOLANT 3-39. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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STARTER CLUTCH AND GENERATOR5-35 . . . . . . . . . . . . . . . . . . . . . . . . .
STATOR COIL ASSEMBLY 5-35. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
STARTER CLUTCH 5-37. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
REMOVING THE GENERATOR 5-38. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
REMOVING THE STARTER CLUTCH 5-39. . . . . . . . . . . . . . . . . . . . . . . .
CHECKING THE DAMPER 5-39. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CHECKING THE STARTER CLUTCH 5-40. . . . . . . . . . . . . . . . . . . . . . . .
INSTALLING THE STARTER CLUTCH 5-41. . . . . . . . . . . . . . . . . . . . . . .
INSTALLING THE GENERATOR 5-41. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CRANKSHAFT POSITION SENSOR5-43 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
REMOVING THE CRANKSHAFT POSITION SENSOR 5-44. . . . . . . . .
INSTALLING THE CRANKSHAFT POSITION SENSOR 5-44. . . . . . . .
CLUTCH5-46 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CLUTCH COVER 5-46. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PULL LEVER SHAFT 5-47. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CLUTCH 5-48. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
REMOVING THE CLUTCH 5-50. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CHECKING THE FRICTION PLATES 5-52. . . . . . . . . . . . . . . . . . . . . . . . .
CHECKING THE CLUTCH PLATES 5-52. . . . . . . . . . . . . . . . . . . . . . . . . .
CHECKING THE CLUTCH SPRINGS 5-53. . . . . . . . . . . . . . . . . . . . . . . .
CHECKING THE CLUTCH HOUSING 5-53. . . . . . . . . . . . . . . . . . . . . . . .
CHECKING THE CLUTCH BOSS 5-53. . . . . . . . . . . . . . . . . . . . . . . . . . . .
CHECKING THE PRESSURE PLATE 5-54. . . . . . . . . . . . . . . . . . . . . . . .
CHECKING THE PULL LEVER SHAFT AND PULL ROD 5-54. . . . . . .
INSTALLING THE CLUTCH 5-54. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SHIFT SHAFT5-58 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SHIFT SHAFT AND STOPPER LEVER 5-58. . . . . . . . . . . . . . . . . . . . . . .
REMOVING THE SHIFT SHAFT 5-60. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CHECKING THE SHIFT SHAFT 5-61. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CHECKING THE STOPPER LEVER 5-61. . . . . . . . . . . . . . . . . . . . . . . . .
INSTALLING THE SHIFT SHAFT 5-61. . . . . . . . . . . . . . . . . . . . . . . . . . . .
OIL PAN AND OIL PUMP5-63 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
REMOVING THE OIL PAN 5-66. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CHECKING THE SPROCKET AND CHAIN 5-66. . . . . . . . . . . . . . . . . . . .
CHECKING THE OIL PUMP 5-67. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CHECKING THE RELIEF VALVE 5-67. . . . . . . . . . . . . . . . . . . . . . . . . . . .
CHECKING THE OIL DELIVERY PIPE AND OIL PIPE 5-68. . . . . . . . .
CHECKING THE OIL STRAINER 5-68. . . . . . . . . . . . . . . . . . . . . . . . . . . .
CHECKING THE OIL NOZZLES 5-68. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ASSEMBLING THE OIL PUMP 5-68. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
INSTALLING THE OIL / WATER PUMP ASSEMBLY 5-69. . . . . . . . . . . .
INSTALLING THE OIL PAN 5-71. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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CRANKCASE5-72 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DISASSEMBLING THE CRANKCASE 5-74. . . . . . . . . . . . . . . . . . . . . . . .
CHECKING THE CRANKCASE 5-75. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CHECKING THE BEARINGS AND OIL SEALS 5-75. . . . . . . . . . . . . . . .
ASSEMBLING THE CRANKCASE 5-75. . . . . . . . . . . . . . . . . . . . . . . . . . .
CONNECTING RODS AND PISTONS5-77 . . . . . . . . . . . . . . . . . . . . . . . . . . .
REMOVING THE CONNECTING RODS AND PISTONS 5-78. . . . . . . .
REMOVING THE CRANKSHAFT ASSEMBLY 5-79. . . . . . . . . . . . . . . . .
CHECKING THE CYLINDER AND PISTON 5-79. . . . . . . . . . . . . . . . . . .
CHECKING THE PISTON RINGS 5-80. . . . . . . . . . . . . . . . . . . . . . . . . . . .
CHECKING THE PISTON PINS 5-81. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CHECKING THE BIG END BEARINGS 5-82. . . . . . . . . . . . . . . . . . . . . . .
INSTALLING THE CONNECTING ROD AND PISTON 5-86. . . . . . . . . .
CRANKSHAFT5-92 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CHECKING THE CRANKSHAFT 5-93. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CHECKING THE CRANKSHAFT DRIVE SPROCKET 5-93. . . . . . . . . .
CHECKING THE CRANKSHAFT JOURNAL BEARINGS 5-93. . . . . . . .
INSTALLING THE CRANKSHAFT 5-96. . . . . . . . . . . . . . . . . . . . . . . . . . . .
TRANSMISSION5-97 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TRANSMISSION, SHIFT DRUM ASSEMBLY AND
SHIFT FORKS 5-97. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
REMOVING THE TRANSMISSION 5-103. . . . . . . . . . . . . . . . . . . . . . . . . . .
CHECKING THE SHIFT FORKS 5-103. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CHECKING THE SHIFT DRUM ASSEMBLY 5-104. . . . . . . . . . . . . . . . . . .
CHECKING THE TRANSMISSION 5-104. . . . . . . . . . . . . . . . . . . . . . . . . . .
INSTALLING THE TRANSMISSION 5-105. . . . . . . . . . . . . . . . . . . . . . . . . .
CHAPTER 6
COOLING SYSTEM
RADIATOR6-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CHECKING THE RADIATOR 6-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
INSTALLING THE RADIATOR 6-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
OIL COOLER6-5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CHECKING THE OIL COOLER 6-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
INSTALLING THE OIL COOLER 6-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
THERMOSTAT6-8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CHECKING THE THERMOSTAT 6-10. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ASSEMBLING THE THERMOSTAT ASSEMBLY 6-11. . . . . . . . . . . . . . .
INSTALLING THE THERMOSTAT ASSEMBLY 6-11. . . . . . . . . . . . . . . .
WATER PUMP6-12 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
IMPELLER SHAFT 6-12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DISASSEMBLING THE WATER PUMP 6-14. . . . . . . . . . . . . . . . . . . . . . .
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1-7
IMPORTANT INFORMATION
GEN
INFO
CAUTION:
EAS00023
LOCK WASHERS / PLATES AND COTTER
PINS
After removal, replace all lock washers / plates
1 and cotter pins. After the bolt or nut has been
tightened to specification, bend the lock tabs
along a flat of the bolt or nut.
EAS00024
BEARINGS AND OIL SEALS
Install bearings and oil seals so that the
manufacturer’s marks or numbers are visible.
When installing oil seals, lubricate the oil seal
lips with a light coat of lithium-soap-based
grease. Oil bearings liberally when installing, if
appropriate.
1Oil seal
Do not spin the bearing with compressed air
because this will damage the bearing sur-
faces.
1Bearing
EAS00025
CIRCLIPS
Before reassembly, check all circlips carefully
and replace damaged or distorted circlips. Al-
ways replace piston pin clips after one use.
When installing a circlip
1, make sure the
sharp-edged corner
2 is positioned opposite
the thrust
3 that the circlip receives.
4Shaft
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1-9
SPECIAL TOOLS
GEN
INFO
NOTE:
EAS00027
SPECIAL TOOLS
The following special tools are necessary for complete and accurate tune-up and assembly. Use only
the appropriate special tools as this will help prevent damage caused by the use of inappropriate tools
or improvised techniques. Special tools, part numbers or both may differ depending on the country.
When placing an order, refer to the list provided below to avoid any mistakes.
For U.S.A. and Canada, use part number starting with “YM-”, “YU-”, or “ACC-”.
For others, use part number starting with “90890-”.
Tool No.
Tool name / FunctionIllustration
90890-01304
YU-01304
Piston pin puller
This tool is used to remove the piston pins.
Radiator cap tester
90890-01325
YU-24460-01
Adapter
90890-01352
YU-33984Radiator cap tester
Radiator cap tester adapter
These tools are used to check the cooling
system.
90890-01403
YU-33975
Steering nut wrench
This tool is used to loosen or tighten the
steering stem ring nuts.
90890-01423
YM-01423
Damper rod holder
This tool is used to hold the damper rod as-
sembly when loosening or tightening the
damper rod assembly bolt.
90890-01426
YU-38411
Oil filter wrench
This tool is needed to loosen or tighten the
oil filter cartridge.
90890-01434
YM-01434
Rod holder
This tool is used to support the damper ad-
justing rod.
Rod puller
90890-01437
YM-01437
Rod puller
attachment
90890-01436
YM-01436Rod puller
Rod puller attachment
These tools are used to pull up the front
fork damper rod.
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1-11
SPECIAL TOOLS
GEN
INFO
Tool No.Tool name / FunctionIllustration
90890-04113
YM-04113
90890-04118
YM-4118Valve guide reamer
This tool is used to rebore the new valve
guides.
90890-06754
YM-34487
Ignition checker
This tool is used to check the ignition sys-
tem components.
90890-85505
ACC-1109-0501
Yamaha bond No. 1215
This bond is used to seal two mating sur-
faces (e.g., crankcase mating surfaces).
90890-03174
Digital circuit tester
This tool is used to check the electrical sys-
tem.
Pivot shaft wrench
90890-01471
YM-01471
Pivot shaft wrench
adapter
90890-01476Pivot shaft wrench
Pivot shaft wrench adapter
This tool is need to loosen or tighten the
spacer bolt.
90890-03132
YU-3112
Pocket tester
This instrument is needed for checking the
engine oil temperature.
Oil pressure
gauge
90890-03153
YU-03153
Adapter
90890-03139Oil pressure gauge
Adapter
These tools are used to measure engine oil
pressure.
90890-06756
Vacuum/pressure pump gauge set
This tool used to measure the vacuum pres-
sure.
90793-80009
Engine tachometer
This tool is needed for observing engine
rpm.
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