Yamaha YZF-R6R, YZF-R6RC, YZF-R6SR SERVICE MANUAL
EAS00010
YZF-R6R/YZF-R6SR
YZF-R6RC/YZF-R6SRC
SERVICE MANUAL
2002 by Yamaha Motor
Corporation, U.S.A.
First edition, December 2002
All rights reserved. Any reproduction
or unauthorized use without the written
permission of Yamaha Motor Corporation,
U.S.A. is expressly prohibited.
Printed in U.S.A.
P/N LIT-11616-16-45
EAS00030
NOTICE
This manual was produced by the Yamaha Motor Company, Ltd. primarily for use by Yamaha dealers
and their qualified mechanics. It is not possible to include all the knowledge of a mechanic in one manual. Therefore, anyone who uses this book to perform maintenance and repairs on Yamaha vehicles
should have a basic understanding of mechanics and the techniques to repair these types of vehicles.
Repair and maintenance work attempted by anyone without this knowledge is likely to render the vehicle unsafe and unfit for use.
This model has been designed and manufactured to perform within certain specifications in regard to
performance and emissions. Proper service with the correct tools is necessary to ensure that the vehicle will operate as designed. If there is any question about a service procedure, it is imperative that
you contact a Yamaha dealer for any service information changes that apply to this model. This policy
is intended to provide the customer with the most satisfaction from his vehicle and to conform to federal
environmental quality objectives.
Yamaha Motor Company, Ltd. is continually striving to improve all of its models. Modifications and significant changes in specifications or procedures will be forwarded to all authorized Yamaha dealers
and will appear in future editions of this manual where applicable.
NOTE:
S This Service Manual contains information regarding periodic maintenance to the emission control
system. Please read this material carefully.
S Designs and specifications are subject to change without notice.
EAS00040
IMPORTANT MANUAL INFORMATION
Particularly important information is distinguished in this manual by the following.
The Safety Alert Symbol means ATTENTION! BECOME ALERT! YOUR
SAFETY IS INVOLVED!
WARNING
CAUTION:
NOTE: A NOTE provides key information to make procedures easier or clearer.
Failure to follow WARNING instructions could result in severe injury or death
the motorcycle operator, a bystander or a person checking or repairing the motorcycle.
A CAUTION indicates special precautions that must be taken to avoid damage
to the motorcycle.
to
EAS00007
HOW TO USE THIS MANUAL
This manual is intended as a handy, easy-to-read reference book for the mechanic. Comprehensive
explanations of all installation, removal, disassembly, assembly, repair and check procedures are laid
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 each
page indicate the current chapter.
Refer to “SYMBOLS”.
2
Each chapter is divided into sections. The current section title is shown at the top of each page,
except in Chapter 3 (“PERIODIC CHECKS AND ADJUSTMENTS”), where the sub-section title(s) appears.
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 each
removal and disassembly section.
5
Numbers are given in the order of the jobs in the exploded diagram. A circled number indicates a
disassembly step.
6
Symbols indicate parts to be lubricated or replaced.
Refer to “SYMBOLS”.
7
A job instruction chart accompanies the exploded diagram, providing the order of jobs, names of
parts, notes in jobs, etc.
8
Jobs requiring more information (such as special tools and technical data) are described sequentially.
4
5
6
7
12
3
8
1
GEN
INFO
3
CHK
ADJ
5
ENG
7
FI ELEC
2
SPEC
4
CHAS
6
COOL
8
EAS00008
SYMBOLS
The following symbols are not relevant to every
vehicle.
Symbols
chapter.
General information
1
Specifications
2
Periodic checks and adjustments
3
Chassis
4
Engine
5
Cooling system
6
Fuel injection system
7
Electrical system
8
Troubleshooting
9
1
to 9 indicate the subject of each
9
10
TRBL
SHTG
11 12
1413
16 1715
19 2018
22
24 25
Symbols 10 to 17 indicate the following.
10
Serviceable with engine mounted
11
Filling fluid
12
Lubricant
13
Special tool
14
Tightening torque
15
Wear limit, clearance
16
Engine speed
17
Electrical data
Symbols 18 to 23 in the exploded diagrams indicate the types of lubricants and lubrication
points.
18
Engine oil
19
Gear oil
20
2321
Molybdenum-disulfide oil
21
Wheel-bearing grease
22
Lithium-soap- based grease
23
Molybdenum-disulfide grease
Symbols 24 to 25 in the exploded diagrams indicate the following.
24
Apply locking agent (LOCTITE)
25
Replace the part
EAS00012
TABLE OF CONTENTS
GENERAL INFORMATION
SPECIFICATIONS
PERIODIC CHECKS AND
ADJUSTMENTS
CHASSIS
ENGINE
GEN
INFO
SPEC
CHK
ADJ
CHAS
ENG
1
2
3
4
5
COOLING SYSTEM
FUEL INJECTION SYSTEM
ELECTRICAL SYSTEM
TROUBLESHOOTING
COOL
FI
ELEC
TRBL
SHTG
6
7
8
9
CHAPTER 1
GENERAL INFORMATION
MOTORCYCLE IDENTIFICATION 1-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
VEHICLE IDENTIFICATION NUMBER 1-1. . . . . . . . . . . . . . . . . . . . . . . .
MODEL LABEL 1-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
FEATURES 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
OUTLINE OF FI SYSTEM 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
FI SYSTEM 1-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
INSTRUMENT FUNCTION 1-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
IMPORTANT INFORMATION 1-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PREPARATION FOR REMOVAL AND DISASSEMBLY 1-7. . . . . . . . .
REPLACEMENT PARTS 1-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
GASKETS, OIL SEALS AND O-RINGS 1-7. . . . . . . . . . . . . . . . . . . . . . .
LOCK WASHERS/PLATES AND COTTER PINS 1-8. . . . . . . . . . . . . .
BEARINGS AND OIL SEALS 1-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CIRCLIPS 1-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CHECKING THE CONNECTIONS 1-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SPECIAL TOOLS 1-10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CHAPTER 2
SPECIFICATIONS
GENERAL SPECIFICATIONS 2-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ENGINE SPECIFICATIONS 2-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CHASSIS SPECIFICATIONS 2-11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ELECTRICAL SPECIFICATIONS 2-15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CONVERSION TABLE 2-18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
GENERAL TIGHTENING TORQUE SPECIFICATIONS 2-18. . . . . . . . . . . .
TIGHTENING TORQUES 2-19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ENGINE TIGHTENING TORQUES 2-19. . . . . . . . . . . . . . . . . . . . . . . . . . .
CHASSIS TIGHTENING TORQUES 2-22. . . . . . . . . . . . . . . . . . . . . . . . . .
LUBRICATION POINTS AND LUBRICANT TYPES 2-24. . . . . . . . . . . . . . .
ENGINE 2-24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CHASSIS 2-25. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
COOLING SYSTEM DIAGRAMS 2-26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ENGINE OIL LUBRICATION CHART 2-30. . . . . . . . . . . . . . . . . . . . . . . . . . . .
LUBRICATION DIAGRAMS 2-31. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CABLE ROUTING 2-37. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CHAPTER 3
PERIODIC CHECKS AND ADJUSTMENTS
INTRODUCTION 3-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PERIODIC MAINTENANCE CHART FOR THE EMISSION CONTROL
SYSTEM 3-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
GENERAL MAINTENANCE AND LUBRICATION CHART 3-1. . . . . . . . .
SEATS 3-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
FUEL TANK 3-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
REMOVING THE FUEL TANK 3-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
REMOVING THE FUEL PUMP 3-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
INSTALLING THE FUEL PUMP 3-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
INSTALLING THE FUEL TANK 3-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
COWLINGS 3-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
REMOVAL 3-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
INSTALLATION 3-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
AIR FILTER CASE 3-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ENGINE 3-10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ADJUSTING THE VALVE CLEARANCE 3-10. . . . . . . . . . . . . . . . . . . . . .
SYNCHRONIZING THE THROTTLE BODIES 3-16. . . . . . . . . . . . . . . . .
ADJUSTING THE ENGINE IDLING SPEED 3-18. . . . . . . . . . . . . . . . . . .
ADJUSTING THE THROTTLE CABLE FREE PLAY 3-19. . . . . . . . . . . .
CHECKING THE SPARK PLUGS 3-21. . . . . . . . . . . . . . . . . . . . . . . . . . . .
MEASURING THE COMPRESSION PRESSURE 3-22. . . . . . . . . . . . . .
CHECKING THE ENGINE OIL LEVEL 3-24. . . . . . . . . . . . . . . . . . . . . . . .
CHANGING THE ENGINE OIL 3-25. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
MEASURING THE ENGINE OIL PRESSURE 3-27. . . . . . . . . . . . . . . . .
ADJUSTING THE CLUTCH CABLE FREE PLAY 3-29. . . . . . . . . . . . . . .
CLEANING THE AIR FILTER ELEMENT 3-30. . . . . . . . . . . . . . . . . . . . . .
CLEANING THE AIR INTAKE SYSTEM SURGE TANKS 3-31. . . . . . . .
CHECKING THE THROTTLE BODY JOINTS 3-31. . . . . . . . . . . . . . . . . .
CHECKING THE FUEL AND BREATHER HOSES 3-32. . . . . . . . . . . . .
CHECKING THE CRANKCASE BREATHER HOSE 3-32. . . . . . . . . . . .
CHECKING THE EXHAUST SYSTEM 3-33. . . . . . . . . . . . . . . . . . . . . . . .
CHECKING THE COOLANT LEVEL 3-33. . . . . . . . . . . . . . . . . . . . . . . . . .
CHECKING THE COOLING SYSTEM 3-34. . . . . . . . . . . . . . . . . . . . . . . .
CHANGING THE COOLANT 3-35. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CHASSIS 3-39. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ADJUSTING THE FRONT BRAKE 3-39. . . . . . . . . . . . . . . . . . . . . . . . . . .
ADJUSTING THE REAR BRAKE 3-40. . . . . . . . . . . . . . . . . . . . . . . . . . . .
CHECKING THE BRAKE FLUID LEVEL 3-41. . . . . . . . . . . . . . . . . . . . . .
ADJUSTING THE REAR BRAKE LIGHT SWITCH 3-42. . . . . . . . . . . . .
CHECKING THE FRONT AND REAR BRAKE PADS 3-43. . . . . . . . . . .
CHECKING THE FRONT AND REAR BRAKE HOSES 3-43. . . . . . . . .
BLEEDING THE HYDRAULIC BRAKE SYSTEM 3-44. . . . . . . . . . . . . . .
ADJUSTING THE SHIFT PEDAL 3-45. . . . . . . . . . . . . . . . . . . . . . . . . . . .
ADJUSTING THE DRIVE CHAIN SLACK 3-46. . . . . . . . . . . . . . . . . . . . .
LUBRICATING THE DRIVE CHAIN 3-47. . . . . . . . . . . . . . . . . . . . . . . . . .
CHECKING AND ADJUSTING THE STEERING HEAD 3-48. . . . . . . . .
CHECKING THE FRONT FORK 3-50. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ADJUSTING THE FRONT FORK LEGS 3-51. . . . . . . . . . . . . . . . . . . . . .
ADJUSTING THE REAR SHOCK ABSORBER ASSEMBLY 3-53. . . . .
CHECKING THE TIRES 3-55. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CHECKING THE WHEELS 3-57. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CHECKING AND LUBRICATING THE CABLES 3-58. . . . . . . . . . . . . . .
LUBRICATING THE LEVERS AND PEDALS 3-58. . . . . . . . . . . . . . . . . .
LUBRICATING THE SIDESTAND 3-58. . . . . . . . . . . . . . . . . . . . . . . . . . . .
LUBRICATING THE REAR SUSPENSION 3-58. . . . . . . . . . . . . . . . . . . .
ELECTRICAL SYSTEM 3-59. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CHECKING AND CHARGING THE BATTERY 3-59. . . . . . . . . . . . . . . . .
CHECKING THE FUSES 3-64. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
REPLACING THE HEADLIGHT BULBS 3-66. . . . . . . . . . . . . . . . . . . . . .
ADJUSTING THE HEADLIGHT BEAMS 3-67. . . . . . . . . . . . . . . . . . . . . .
CHAPTER 4
CHASSIS
FRONT WHEEL AND BRAKE DISCS 4-1. . . . . . . . . . . . . . . . . . . . . . . . . . .
REMOVING THE FRONT WHEEL 4-3. . . . . . . . . . . . . . . . . . . . . . . . . . .
CHECKING THE FRONT WHEEL 4-3. . . . . . . . . . . . . . . . . . . . . . . . . . . .
CHECKING THE BRAKE DISCS 4-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
INSTALLING THE FRONT WHEEL 4-6. . . . . . . . . . . . . . . . . . . . . . . . . . .
ADJUSTING THE FRONT WHEEL STATIC BALANCE 4-7. . . . . . . . .
REAR WHEEL AND BRAKE DISC 4-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
REAR WHEEL 4-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
REAR BRAKE DISC AND REAR WHEEL SPROCKET 4-10. . . . . . . . .
REMOVING THE REAR WHEEL 4-12. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CHECKING THE REAR WHEEL 4-13. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CHECKING THE REAR WHEEL DRIVE HUB 4-13. . . . . . . . . . . . . . . . .
CHECKING AND REPLACING THE REAR WHEEL
SPROCKET 4-13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
INSTALLING THE REAR WHEEL 4-14. . . . . . . . . . . . . . . . . . . . . . . . . . . .
ADJUSTING THE REAR WHEEL STATIC BALANCE 4-15. . . . . . . . . . .
FRONT AND REAR BRAKES 4-16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
FRONT BRAKE PADS 4-16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
REAR BRAKE PADS 4-17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
REPLACING THE FRONT BRAKE PADS 4-18. . . . . . . . . . . . . . . . . . . . .
REPLACING THE REAR BRAKE PADS 4-21. . . . . . . . . . . . . . . . . . . . . .
FRONT BRAKE MASTER CYLINDER 4-23. . . . . . . . . . . . . . . . . . . . . . . .
REAR BRAKE MASTER CYLINDER 4-26. . . . . . . . . . . . . . . . . . . . . . . . .
DISASSEMBLING THE FRONT BRAKE MASTER CYLINDER 4-28. .
DISASSEMBLING THE REAR BRAKE MASTER CYLINDER 4-28. . . .
CHECKING THE FRONT AND REAR BRAKE MASTER
CYLINDERS 4-29. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ASSEMBLING AND INSTALLING THE FRONT BRAKE MASTER
CYLINDER 4-30. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ASSEMBLING THE REAR BRAKE MASTER CYLINDER 4-32. . . . . . .
FRONT BRAKE CALIPERS 4-34. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
REAR BRAKE CALIPER 4-36. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DISASSEMBLING THE FRONT BRAKE CALIPERS 4-38. . . . . . . . . . .
DISASSEMBLING THE REAR BRAKE CALIPER 4-39. . . . . . . . . . . . . .
CHECKING THE FRONT AND REAR BRAKE CALIPERS 4-40. . . . . .
ASSEMBLING AND INSTALLING THE FRONT BRAKE
CALIPERS 4-41. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ASSEMBLING AND INSTALLING THE REAR BRAKE CALIPER 4-43.
FRONT FORK 4-45. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
FRONT FORK LEGS 4-45. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
REMOVING THE FRONT FORK LEGS 4-48. . . . . . . . . . . . . . . . . . . . . . .
DISASSEMBLING THE FRONT FORK LEGS 4-49. . . . . . . . . . . . . . . . .
CHECKING THE FRONT FORK LEGS 4-50. . . . . . . . . . . . . . . . . . . . . . .
ASSEMBLING THE FRONT FORK LEGS 4-51. . . . . . . . . . . . . . . . . . . . .
INSTALLING THE FRONT FORK LEGS 4-56. . . . . . . . . . . . . . . . . . . . . .
HANDLEBARS 4-58. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
REMOVING THE HANDLEBARS 4-59. . . . . . . . . . . . . . . . . . . . . . . . . . . .
CHECKING THE HANDLEBARS 4-59. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
INSTALLING THE HANDLEBARS 4-60. . . . . . . . . . . . . . . . . . . . . . . . . . .
STEERING HEAD 4-63. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
UNDER BRACKET 4-63. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
REMOVING THE UNDER BRACKET 4-65. . . . . . . . . . . . . . . . . . . . . . . . .
CHECKING THE STEERING HEAD 4-65. . . . . . . . . . . . . . . . . . . . . . . . . .
INSTALLING THE STEERING HEAD 4-66. . . . . . . . . . . . . . . . . . . . . . . . .
REAR SHOCK ABSORBER ASSEMBLY 4-68. . . . . . . . . . . . . . . . . . . . . . . .
HANDLING THE REAR SHOCK ABSORBER AND GAS
CYLINDER 4-70. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DISPOSING OF A REAR SHOCK ABSORBER AND GAS
CYLINDER 4-70. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
REMOVING THE REAR SHOCK ABSORBER ASSEMBLY 4-71. . . . .
CHECKING THE REAR SHOCK ABSORBER ASSEMBLY AND
GAS CYLINDER 4-71. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CHECKING THE CONNECTING ROD AND RELAY ARMS 4-72. . . . . .
INSTALLING THE REAR SHOCK ABSORBER ASSEMBLY 4-72. . . . .
SWINGARM AND DRIVE CHAIN 4-73. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
REMOVING THE SWINGARM 4-75. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
REMOVING THE DRIVE CHAIN 4-76. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CHECKING THE SWINGARM 4-76. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CHECKING THE DRIVE CHAIN 4-77. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
INSTALLING THE SWINGARM 4-79. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CHAPTER 5
OVERHAULING THE ENGINE
ENGINE 5-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DRIVE SPROCKET 5-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
EXHAUST PIPE 5-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
LEADS AND HOSES 5-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ENGINE 5-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
INSTALLING THE ENGINE 5-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CAMSHAFTS 5-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CYLINDER HEAD COVER 5-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CAMSHAFTS 5-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
REMOVING THE CAMSHAFTS 5-10. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CHECKING THE CAMSHAFTS 5-11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CHECKING THE TIMING CHAIN, CAMSHAFT SPROCKETS,
AND TIMING CHAIN GUIDES 5-13. . . . . . . . . . . . . . . . . . . . . . . . . . . .
CHECKING THE TIMING CHAIN TENSIONER 5-13. . . . . . . . . . . . . . . .
INSTALLING THE CAMSHAFTS 5-14. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CYLINDER HEAD 5-18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
REMOVING THE CYLINDER HEAD 5-19. . . . . . . . . . . . . . . . . . . . . . . . . .
CHECKING THE CYLINDER HEAD 5-19. . . . . . . . . . . . . . . . . . . . . . . . . .
INSTALLING THE CYLINDER HEAD 5-20. . . . . . . . . . . . . . . . . . . . . . . . .
VALVES AND VALVE SPRINGS 5-21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
REMOVING THE VALVES 5-23. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CHECKING THE VALVES AND VALVE GUIDES 5-24. . . . . . . . . . . . . . .
CHECKING THE VALVE SEATS 5-26. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CHECKING THE VALVE SPRINGS 5-28. . . . . . . . . . . . . . . . . . . . . . . . . .
CHECKING THE VALVE LIFTERS 5-29. . . . . . . . . . . . . . . . . . . . . . . . . . .
INSTALLING THE VALVES 5-29. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
STARTER CLUTCH AND GENERATOR 5-31. . . . . . . . . . . . . . . . . . . . . . . . .
STATOR COIL ASSEMBLY 5-31. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
REMOVING THE GENERATOR 5-33. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
REMOVING THE STARTER CLUTCH 5-34. . . . . . . . . . . . . . . . . . . . . . . .
CHECKING THE STARTER CLUTCH 5-35. . . . . . . . . . . . . . . . . . . . . . . .
INSTALLING THE STARTER CLUTCH 5-35. . . . . . . . . . . . . . . . . . . . . . .
INSTALLING THE GENERATOR 5-36. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SHIFT SHAFT 5-38. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SHIFT SHAFT AND STOPPER LEVER 5-38. . . . . . . . . . . . . . . . . . . . . . .
CHECKING THE SHIFT SHAFT 5-40. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CHECKING THE STOPPER LEVER 5-40. . . . . . . . . . . . . . . . . . . . . . . . .
INSTALLING THE SHIFT SHAFT 5-40. . . . . . . . . . . . . . . . . . . . . . . . . . . .
CRANKSHAFT POSITION SENSOR AND PICKUP ROTOR 5-41. . . . . . .
REMOVING THE PICKUP ROTOR 5-43. . . . . . . . . . . . . . . . . . . . . . . . . . .
INSTALLING THE PICKUP ROTOR 5-43. . . . . . . . . . . . . . . . . . . . . . . . . .
CLUTCH 5-45. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CLUTCH COVER 5-45. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CLUTCH 5-47. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
REMOVING THE CLUTCH 5-48. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CHECKING THE FRICTION PLATES 5-48. . . . . . . . . . . . . . . . . . . . . . . . .
CHECKING THE CLUTCH PLATES 5-49. . . . . . . . . . . . . . . . . . . . . . . . . .
CHECKING THE CLUTCH SPRINGS 5-49. . . . . . . . . . . . . . . . . . . . . . . .
CHECKING THE CLUTCH HOUSING 5-50. . . . . . . . . . . . . . . . . . . . . . . .
CHECKING THE CLUTCH BOSS 5-50. . . . . . . . . . . . . . . . . . . . . . . . . . . .
CHECKING THE PRESSURE PLATE 5-50. . . . . . . . . . . . . . . . . . . . . . . .
CHECKING THE PULL LEVER SHAFT AND PULL ROD 5-51. . . . . . .
INSTALLING THE CLUTCH 5-51. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
OIL PAN AND OIL PUMP 5-54. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
REMOVING THE OIL PAN 5-57. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CHECKING THE OIL PUMP 5-57. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CHECKING THE RELIEF VALVE 5-58. . . . . . . . . . . . . . . . . . . . . . . . . . . .
CHECKING THE OIL DELIVERY PIPE AND OIL PIPE 5-58. . . . . . . . .
CHECKING THE OIL STRAINER 5-58. . . . . . . . . . . . . . . . . . . . . . . . . . . .
CHECKING THE OIL NOZZLES 5-58. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ASSEMBLING THE OIL PUMP 5-59. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
INSTALLING THE OIL PUMP 5-59. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
INSTALLING THE OIL STRAINER 5-60. . . . . . . . . . . . . . . . . . . . . . . . . . .
INSTALLING THE OIL PAN 5-60. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CRANKCASE 5-61. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DISASSEMBLING THE CRANKCASE 5-63. . . . . . . . . . . . . . . . . . . . . . . .
CHECKING THE CRANKCASE 5-64. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CHECKING THE BEARINGS AND OIL SEALS 5-64. . . . . . . . . . . . . . . .
CHECKING THE TIMING CHAIN 5-64. . . . . . . . . . . . . . . . . . . . . . . . . . . .
ASSEMBLING THE CRANKCASE 5-64. . . . . . . . . . . . . . . . . . . . . . . . . . .
CONNECTING RODS AND PISTONS 5-66. . . . . . . . . . . . . . . . . . . . . . . . . . .
REMOVING THE CONNECTING RODS AND PISTONS 5-67. . . . . . . .
REMOVING THE CRANKSHAFT ASSEMBLY 5-68. . . . . . . . . . . . . . . . .
CHECKING THE CYLINDER AND PISTON 5-68. . . . . . . . . . . . . . . . . . .
CHECKING THE PISTON RINGS 5-69. . . . . . . . . . . . . . . . . . . . . . . . . . . .
CHECKING THE PISTON PINS 5-70. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CHECKING THE BIG END BEARINGS 5-71. . . . . . . . . . . . . . . . . . . . . . .
INSTALLING THE CONNECTING ROD AND PISTON 5-74. . . . . . . . . .
CRANKSHAFT 5-78. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CHECKING THE CRANKSHAFT 5-79. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CHECKING THE CRANKSHAFT JOURNAL BEARINGS 5-79. . . . . . . .
INSTALLING THE CRANKSHAFT 5-82. . . . . . . . . . . . . . . . . . . . . . . . . . . .
TRANSMISSION 5-83. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TRANSMISSION, SHIFT DRUM ASSEMBLY AND SHIFT
FORKS 5-83. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
REMOVING THE TRANSMISSION 5-89. . . . . . . . . . . . . . . . . . . . . . . . . . .
CHECKING THE SHIFT FORKS 5-89. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CHECKING THE SHIFT DRUM ASSEMBLY 5-90. . . . . . . . . . . . . . . . . . .
CHECKING THE TRANSMISSION 5-90. . . . . . . . . . . . . . . . . . . . . . . . . . .
INSTALLING THE TRANSMISSION 5-91. . . . . . . . . . . . . . . . . . . . . . . . . .
CHAPTER 6
COOLING SYSTEM
RADIATOR 6-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CHECKING THE RADIATOR 6-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
INSTALLING THE RADIATOR 6-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
OIL COOLER 6-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CHECKING THE OIL COOLER 6-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
INSTALLING THE OIL COOLER 6-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
THERMOSTAT 6-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CHECKING THE THERMOSTAT 6-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
INSTALLING THE THERMOSTAT 6-8. . . . . . . . . . . . . . . . . . . . . . . . . . . .
WATER PUMP 6-10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DISASSEMBLING THE WATER PUMP 6-12. . . . . . . . . . . . . . . . . . . . . . .
CHECKING THE WATER PUMP 6-13. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ASSEMBLING THE WATER PUMP 6-13. . . . . . . . . . . . . . . . . . . . . . . . . .
INSTALLING THE WATER PUMP 6-15. . . . . . . . . . . . . . . . . . . . . . . . . . . .
CHAPTER 7
FUEL INJECTION SYSTEM
FUEL INJECTION SYSTEM 7-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
WIRING DIAGRAM 7-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ECU’S SELF-DIAGNOSTIC FUNCTION 7-3. . . . . . . . . . . . . . . . . . . . . .
ALTERNATE INSTRUCTIONS OPERATION CONTROL
(FAIL-SAFE ACTION) 7-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
FAIL-SAFE ACTIONS TABLE 7-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TROUBLESHOOTING CHART 7-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DIAGNOSTIC MODE 7-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TROUBLESHOOTING DETAILS 7-12. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
THROTTLE BODIES 7-27. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CHECKING THE INJECTOR 7-31. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CHECKING THE THROTTLE BODY 7-31. . . . . . . . . . . . . . . . . . . . . . . . .
CHECKING THE PRESSURE REGULATOR 7-32. . . . . . . . . . . . . . . . . .
CHECKING THE FUEL PUMP AND PRESSURE REGULATOR
OPERATION 7-32. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CHECKING AND ADJUSTING THE THROTTLE POSITION
SENSOR 7-33. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
AIR INDUCTION SYSTEM 7-35. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
AIR INJECTION 7-35. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
AIR CUT-OFF VALVE 7-35. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
AIR INDUCTION SYSTEM DIAGRAMS 7-36. . . . . . . . . . . . . . . . . . . . . . .
CHECKING THE AIR INDUCTION SYSTEM 7-37. . . . . . . . . . . . . . . . . .
CHAPTER 8
ELECTRICAL
ELECTRICAL COMPONENTS 8-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CHECKING SWITCH CONTINUITY 8-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CHECKING THE SWITCHES 8-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CHECKING THE BULBS AND BULB SOCKETS 8-5. . . . . . . . . . . . . . . . .
TYPES OF BULBS 8-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CHECKING THE CONDITION OF THE BULBS 8-6. . . . . . . . . . . . . . . .
CHECKING THE CONDITION OF THE BULB SOCKETS 8-7. . . . . . .
CHECKING THE LEDs 8-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
IGNITION SYSTEM 8-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CIRCUIT DIAGRAM 8-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TROUBLESHOOTING 8-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ELECTRIC STARTING SYSTEM 8-14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CIRCUIT DIAGRAM 8-14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
STARTING CIRCUIT CUT-OFF SYSTEM OPERATION 8-15. . . . . . . . .
TROUBLESHOOTING 8-16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
STARTER MOTOR 8-19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CHECKING THE STARTER MOTOR 8-21. . . . . . . . . . . . . . . . . . . . . . . . .
ASSEMBLING THE STARTER MOTOR 8-22. . . . . . . . . . . . . . . . . . . . . .
CHARGING SYSTEM 8-23. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CIRCUIT DIAGRAM 8-23. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TROUBLESHOOTING 8-24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
LIGHTING SYSTEM 8-26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CIRCUIT DIAGRAM 8-26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TROUBLESHOOTING 8-28. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CHECKING THE LIGHTING SYSTEM 8-30. . . . . . . . . . . . . . . . . . . . . . . .
SIGNALING SYSTEM 8-33. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CIRCUIT DIAGRAM 8-33. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TROUBLESHOOTING 8-35. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CHECKING THE SIGNALING SYSTEM 8-35. . . . . . . . . . . . . . . . . . . . . .
COOLING SYSTEM 8-42. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CIRCUIT DIAGRAM 8-42. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TROUBLESHOOTING 8-43. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
FUEL PUMP SYSTEM 8-46. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CIRCUIT DIAGRAM 8-46. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
FUEL PUMP SYSTEM 8-47. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TROUBLESHOOTING 8-48. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CHECKING THE FUEL PUMP 8-50. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SELF-DIAGNOSIS 8-51. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TROUBLESHOOTING 8-52. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CHAPTER 9
TROUBLESHOOTING
STARTING FAILURES 9-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ENGINE 9-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
FUEL SYSTEM 9-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ELECTRICAL SYSTEMS 9-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
INCORRECT ENGINE IDLING SPEED 9-2. . . . . . . . . . . . . . . . . . . . . . . . . .
ENGINE 9-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
FUEL SYSTEM 9-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ELECTRICAL SYSTEMS 9-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
POOR MEDIUM-AND-HIGH-SPEED PERFORMANCE 9-2. . . . . . . . . . . .
ENGINE 9-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
FUEL SYSTEM 9-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
FAULTY GEAR SHIFTING 9-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SHIFTING IS DIFFICULT 9-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SHIFT PEDAL DOES NOT MOVE 9-3. . . . . . . . . . . . . . . . . . . . . . . . . . .
JUMPS OUT OF GEAR 9-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
FAULTY CLUTCH 9-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CLUTCH SLIPS 9-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CLUTCH DRAGS 9-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
OVERHEATING 9-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ENGINE 9-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
COOLING SYSTEM 9-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
FUEL SYSTEM 9-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CHASSIS 9-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ELECTRICAL SYSTEMS 9-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
OVERCOOLING 9-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
COOLING SYSTEM 9-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
POOR BRAKING PERFORMANCE 9-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
FAULTY FRONT FORK LEGS 9-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
LEAKING OIL 9-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
MALFUNCTION 9-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
UNSTABLE HANDLING 9-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
FAULTY LIGHTING OR SIGNALING SYSTEM 9-6. . . . . . . . . . . . . . . . . . .
HEADLIGHT DOES NOT COME ON 9-6. . . . . . . . . . . . . . . . . . . . . . . . .
HEADLIGHT BULB BURNT OUT 9-6. . . . . . . . . . . . . . . . . . . . . . . . . . . .
TAIL/BRAKE LIGHT DOES NOT COME ON 9-6. . . . . . . . . . . . . . . . . .
TAIL/BRAKE LIGHT BULB BURNT OUT 9-6. . . . . . . . . . . . . . . . . . . . .
TURN SIGNAL DOES NOT COME ON 9-6. . . . . . . . . . . . . . . . . . . . . . .
TURN SIGNAL BLINKS SLOWLY 9-6. . . . . . . . . . . . . . . . . . . . . . . . . . . .
TURN SIGNAL REMAINS LIT 9-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TURN SIGNAL BLINKS QUICKLY 9-6. . . . . . . . . . . . . . . . . . . . . . . . . . .
HORN DOES NOT SOUND 9-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
MOTORCYCLE IDENTIFICATION
EAS00014
GENERAL INFORMATION
MOTORCYCLE IDENTIFICATION
EAS00017
VEHICLE IDENTIFICATION NUMBER
The vehicle identification number
into the right side of the steering head pipe.
EAS00018
MODEL LABEL
1
The model label
information will be needed to order spare parts.
is affixed to the frame. This
GEN
INFO
1
is stamped
1
1-1
GEN
FEATURES
EAS00896
FEATURES
OUTLINE OF FI SYSTEM
The main function of a fuel supply system is to provide fuel to the combustion chamber at the optimum
air-fuel ratio in accordance with the engine operating conditions and the atmospheric temperature.
In the conventional carburetor system, the air-fuel ratio of the mixture that is supplied to the combustion
chamber is created by the volume of the intake air and the fuel that is metered by the jet used in the
respective chamber.
Despite the same volume of intake air, the fuel volume requirement varies by the engine operating
conditions, such as acceleration, deceleration, or operating under a heavy load. Carburetors that meter the fuel through the use of jets have been provided with various auxiliary devices, so that an optimum air-fuel ratio can be achieved to accommodate the constant changes in the operating conditions
of the engine.
As the requirements for the engine to deliver more performance and cleaner exhaust gases increase, it
becomes necessary to control the air-fuel ratio in a more precise and finely tuned manner. To accommodate this need, this model has adopted an electronically controlled fuel injection (FI) system, in
place of the conventional carburetor system. This system can achieve an optimum air-fuel ratio required by the engine at all times by using a microprocessor that regulates the fuel injection volume
according to the engine operating conditions detected by various sensors.
The adoption of the FI system has resulted in a highly precise fuel supply, improved engine response,
better fuel economy, and reduced exhaust emissions. Furthermore, the air induction system (AI system) has been placed under computer control together with the FI system in order to realize cleaner
exhaust gases.
INFO
1 Ignition coil
2 Air filter case
3 Intake temperature
sensor
4 Fuel delivery hose
5 Fuel tank
6 Fuel pump
7 Fuel return hose
8 Intake air pressure
sensor
9 Throttle position sen-
sor
10 Fuel injector
11 Catalytic converter
12 Crankshaft position
sensor
13 Coolant temperature
sensor
14 Spark plug
15 Cylinder identification
sensor
16 Pressure regulator
17 Battery
18 ECU
19 Atmospheric pressure
sensor
20 Fuel injection system
relay
1-2
21 Engine trouble warn-
ing light
22 Lean angle cut-off
switch
23 Air cut-off valve
GEN
FEATURES
EAS00897
FI SYSTEM
The fuel pump delivers fuel to the injector via the fuel filter. The pressure regulator maintains the fuel
pressure that is applied to the injector at only 284 kPa (2.84 kg/cm
pressure. Accordingly, when the energizing signal from the ECU energizes the injector, the fuel passage opens, causing the fuel to be injected into the intake manifold only during the time the passage
remains open. Therefore, the longer the length of time the injector is energized (injection duration), the
greater the volume of fuel that is supplied. Conversely, the shorter the length of time the injector is energized (injection duration), the lesser the volume of fuel that is supplied.
The injection duration and the injection timing are controlled by the ECU. Signals that are input from the
throttle position sensor, crankshaft position sensor, intake air pressure sensor, atmospheric pressure
sensor, intake temperature sensor and coolant temperature sensor enable the ECU to determine the
injection duration. The injection timing is determined through the signals from the crankshaft position
sensor and the cylinder identification sensor. As a result, the volume of fuel that is required by the engine can be supplied at all times in accordance with the driving conditions.
Illustration is for reference only.
2
) higher than the intake manifold
INFO
1 Fuel pump
2 Pressure regulator
3 Fuel injector
4 Throttle body
5 Intake temperature
sensor
6 Throttle position sen-
sor
7 Intake air pressure
sensor
8 ECU
9 Atmospheric pressure
sensor
10 Coolant temperature
sensor
11 Cylinder identification
sensor
12 Crankshaft position
sensor
1-3
A Fuel system
B Air system
C Control system
GEN
FEATURES
INSTRUMENT FUNCTION
Multi-function display
The multi-function display is equipped with the
following:
S a speedometer (which shows the riding
speed)
S an odometer (which shows the total distance
traveled)
S two tripmeters (which show the distance
traveled since they were last set to zero)
1 Multi-function display
2 “SELECT” button
3 “RESET” button
4 Engine trouble warning light
NOTE:
S Be sure to turn the key to “ON” before using the “SELECT” and ”RESET” buttons.
SFor the U.K. only: To switch the speedometer and odometer / tripmeter display between kilometers
and miles, press the “SELECT” button and “RESET” button together for at least two seconds.
S a fuel reserve tripmeter (which shows the
distance traveled since the fuel level warning
light came on)
S a clock
S a self-diagnosis device
S a display brightness and engine speed warn-
ing light control mode
INFO
Odometer and tripmeter modes
Pushing the “SELECT” button switches the display between the odometer mode “ODO” and the tripmeter modes “TRIP 1” and “TRIP 2” in the following order:
ODO ! TRIP 1 ! TRIP 2 ! ODO
If the fuel level warning light comes on, the odometer display will automatically change to the fuel reserve tripmeter mode “F-TRIP” and start counting the distance traveled from that point. In that case,
pushing the “SELECT” button switches the display between the various tripmeter and odometer
modes in the following order:
F-TRIP ! TRIP 1 ! TRIP 2 ! ODO ! F-TRIP
To reset a tripmeter, select it by pushing the “SELECT” button, and then push the “RESET” button for at
least one second. If you do not reset the fuel reserve tripmeter manually, it will reset itself automatically
and the display will return to the prior mode after refueling and traveling 5 km (3.1 mi).
Clock mode
Turn the key to “ON”.
To change the display to the clock mode, push the “SELECT” button for at least one second.
To change the display back to the prior mode, push the “SELECT” button.
To set the clock:
1. Push the “SELECT” button and “RESET” button together for at least two seconds.
2. When the hour digits start flashing, push the “RESET” button to set the hours.
3. Push the “SELECT” button, and the minute digits will start flashing.
4. Push the “RESET” button to set the minutes.
5. Push the “SELECT” button and then release it to start the clock.
1-4
GEN
FEATURES
Display brightness and shift timing indicator light control mode
This mode cycles through five control functions,
allowing you to make the following settings in
the order listed below.
1. Display brightness: This function allows you
to adjust the brightness of the multi-function
display to suit the outside lighting conditions.
2. Shift timing indicator light activity: This function allows you to choose whether or not the
1 Shift timing indicator light
2 “SELECT” button
3 “RESET” button
4. Shift timing indicator light deactivation: This function allows you to select the engine speed at which
the indicator light will be deactivated.
5. Shift timing indicator light brightness: This function allows you to adjust the brightness of the indicator light to suit your preference.
indicator light should be activated and
whether it should blink or stay on when activated.
3. Shift timing indicator light activation: This
function allows you to select the shift timing
at which the indicator light will be activated.
INFO
NOTE:
S To make any settings in this mode, you have to cycle through all of its functions. However, if the key is
turned to “OFF” or engine is started before completing the procedure, only the settings made before
the “SELECT” button was last pushed will be applied.
S In this mode, the multi-function display shows the current setting for each function (except the shift
timing indicator light activity function).
To adjust the display brightness
1. Turn the key to “OFF”.
2. Push and hold the “SELECT” button.
3. Turn the key to “ON”, and then, after five seconds, release the “SELECT” button.
4. Push the “RESET” button to select the desired display brightness level.
5. Push the “SELECT” button to confirm the selected display brightness level. The control mode
changes to the shift timing indicator light activity function.
To set the shift timing indicator light activity function
1. Push the “RESET” button to select one of the following indicator light activity settings:
a. The indicator light will stay on when activated. (This setting is selected when the indicator light stays
on.)
b. The indicator light will flash when activated. (This setting is selected when the indicator light flashes
four times per second.)
c. The indicator light is deactivated; in other words, it will not come on or flash. (This setting is selected
when the indicator light flashes once every two seconds.)
2. Push the “SELECT” button to confirm the selected indicator light activity. The control mode changes
to the shift timing indicator light activation function.
1-5
GEN
FEATURES
To set the shift timing indicator light activation function
NOTE:
S The indicator light activation function can be set between 10,000 and 16,000 r /min.
S From 10,000 r /min to 12,000 r/min, the indicatar light can be set in increments of 500 r/min.
S From 12,000 r /min to 16,000 r/min, the indicatar light can be set in increments of 200 r/min.
1. Push the “RESET” button to select the desired engine speed for activating the indicator light.
2. Push the “SELECT” button to confirm the selected engine speed.
The control mode changes to the shift timing indicator light deactivation function.
To set the shift timing indicator light deactivation function
NOTE:
S The indicator light deactivation function can be set between 7,000 and 12,000 r /min in increments of
500 r/min.
S Be sure to set the deactivation function to a higher engine speed than for the activation function,
otherwise the shift timing indicator light will remain deactivated.
1. Push the “RESET” button to select the desired engine speed for deactivating the indicator light.
2. Push the “SELECT” button to confirm the selected engine speed.
The control mode changes to the shift timing indicator light brightness function.
INFO
To adjust the shift timing indicator light brightness
1. Push the “RESET” button to select the desired indicator light brightness level.
2. Push the “SELECT” button to confirm the selected indicator light brightness level. The multi-function
display will return to the odometer, tripmeter or clock mode.
1-6
IMPORTANT INFORMATION
EAS00020
IMPORTANT INFORMATION
PREPARATION FOR REMOVAL AND
DISASSEMBLY
1. 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”.
3. When disassembling, always keep mated
parts together. This includes gears, cylinders, pistons and other parts that have been
“mated” through normal wear. Mated parts
must always be reused or replaced as an assembly.
4. During disassembly, clean all of the parts
and place them in trays in the order of disassembly. This will speed up assembly and allow for the correct installation of all parts.
5. Keep all parts away from any source of fire.
GEN
INFO
lip
oil
lip
spring
grease
EAS00021
REPLACEMENT PARTS
Use only genuine Yamaha parts for all replacements. Use oil and grease recommended by
Yamaha for all lubrication jobs. Other brands
may be similar in function and appearance, but
inferior in quality.
EAS00022
GASKETS, OIL SEALS AND O-RINGS
1. When overhauling the engine, replace all
gaskets, seals and O-rings. All gasket surfaces, oil seal lips and O-rings must be
cleaned.
2. During reassembly, properly oil all mating
parts and bearings and lubricate the oil seal
lips with grease.
1-7
IMPORTANT INFORMATION
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.
Oil seal
1
GEN
INFO
CAUTION:
Do not spin the bearing with compressed air
because this will damage the bearing surfaces.
Bearing
1
EAS00025
CIRCLIPS
Before reassembly, check all circlips carefully
and replace damaged or distorted circlips. Always replace piston pin clips after one use.
When installing a circlip
sharp-edged corner
3
the thrust
Shaft
4
that the circlip receives.
1
, make sure the
2
is positioned opposite
1-8
CHECKING THE CONNECTIONS
EAS00026
CHECKING THE CONNECTIONS
Check the leads, couplers, and connectors for
stains, rust, moisture, etc.
1. Disconnect:
S lead
S coupler
S connector
2. Check:
S lead
S coupler
S connector
Moisture ! Dry with an air blower.
Rust/stains ! Connect and disconnect sev-
eral times.
3. Check:
S all connections
Loose connection ! Connect properly.
NOTE:
If the pin
up.
1
on the terminal is flattened, bend it
GEN
INFO
4. Connect:
S lead
S coupler
S connector
NOTE:
Make sure all connections are tight.
5. Check:
S continuity
(with the pocket tester)
Pocket tester
90890-03112, YU-3112
NOTE:
S If there is no continuity, clean the terminals.
S When checking the wire harness, perform
steps (1) to (3).
S As a quick remedy, use a contact revitalizer
available at most part stores.
1-9
GEN
SPECIAL TOOLS
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.
NOTE:
S For U.S.A. and Canada, use part number starting with “YM-”, “YU-”, or “ACC-”.
S For others, use part number starting with “90890-”.
INFO
Tool No.
Flywheel puller
90890-01362
YU-33270-B
Adapter
90890-04089
YM-33282
90890-01701
YS-01880-A
90890-01304
YU-01304
Radiator cap
tester
90890-01325
YU-24460-01
Adapter
90890-01352
YU-33984
Tool name / Function Illustration
Flywheel puller
Adapter
This tool is used to remove the generator rotor.
Sheave holder
This tool is used to hold the generator rotor
when removing or installing the generator rotor bolt or pickup coil rotor bolt.
Piston pin puller
This tool is used to remove the piston pins.
Radiator cap tester
Adapter
These tools are used to check the cooling
system.
90890-01403
YU-33975
90890-01473
Pivot shaft
wrench
90890-01471
YM-01471
Pivot shaft wrench
adapter
90890-01476
Steering nut wrench
This tool is used to loosen or tighten the steering stem ring nuts.
Damper rod holder
This tool is used to hold the damper rod assembly when loosening or tightening the
damper rod assembly bolt.
Pivot shaft wrench
Pivot shaft wrench adapter
This tool is used to loosen or tighten the pivot
adjust bolt and engine mount adjust bolt.
1-10
SPECIAL TOOLS
Tool No. Tool name / Function Illustration
Oil filter wrench
90890-01426
YU-38411
Rod puller
90890-01437
YM-01437
Rod puller
attachment
90890-01436
Fork seal driver
90890-01367
YM-33963
Fork seal driver
attachment
90890-01374
YM-8020-A
Vacuum gauge
90890-03094
YU-08030
Compression
gauge
90890-03081
YU-33223
Adapter
90890-04136
This tool is needed to loosen or tighten the oil
filter cartridge.
Rod puller
Rod puller attachment
These tools are used to pull up the front fork
damper rod.
Fork seal driver weight
Fork seal driver attachment
This tool is used to install the front fork’s oil
seal and dust seal.
Vacuum gauge
This gauge is used to synchronize the carburetors.
Compression gauge
Adapter
These tools are used to measure engine
compression.
Pocket tester
GEN
INFO
90890-03112
YU-3112
Oil pressure
gauge
90890-03153
YU-03153
Adapter
90890-03139
90890-03174
90890-03176
YM-03176
90890-03153
YU-03153
This tool is used to check the electrical system.
Oil pressure gauge
Adapter
These tools are used to measure engine oil
pressure.
Digital circuit tester
This tool is used to check the electrical system.
Fuel pressure adapter
This tool is needed to measure fuel pressure.
Pressure gauge
This tool used is to measure fuel pressure.
1-11
SPECIAL TOOLS
Tool No. Tool name / Function Illustration
Piston ring compressor
90890-04044
YM-04044
90890-03158
Valve spring
compressor
90890-04019
YM-04019
Attachment
90890-04108
YM-01253
Middle driven shaft
bearing driver
90890-04058
YM-4058
Mechanical seal
installer
90890-04078
YM-33221
This tool is used to compress piston rings
when installing the cylinder.
Carburetor angle driver
This tool is used to turn the pilot screw when
adjusting the engine idling speed.
Valve spring compressor
Attachment
These tools are used to remove or install the
valve assemblies.
Middle driven shaft bearing driver
Mechanical seal installer
These tools are used to install the water pump
seal.
Clutch holding tool
GEN
INFO
90890-04086
YM-91042
90890-04101
90890-04111
90890-04112
90890-04113
YM-04113
This tool is used to hold the clutch boss
when removing or installing the clutch boss
nut.
Valve lapper
This tool is needed to remove and install
the valve lifter.
Valve guide remover (φ4)
This tool is used to remove or install the valve
guides.
Valve guide installer (φ4)
This tool is used to install the valve guides.
Valve guide reamer (φ4)
This tool is used to rebore the new valve
guides.
Ignition checker
90890-06754
YM-34487
This tool is used to check the ignition system
components.
1-12
SPECIAL TOOLS
Tool No. Tool name / Function Illustration
Vacuum/pressure pump gauge set
90890-06756
YB-35956
90890-85505
ACC-1100105-01
This tool used to measure the vacuum pressure.
Yamaha bond No. 1215
This bond is used to seal two mating surfaces
(e.g., crankcase mating surfaces).
GEN
INFO
1-13
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