YZF-R1S / YZF-R1SC
SERVICE MANUAL
2003 by Yamaha Motor
Corporation, U.S.A.
First edition, December 2003
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-11616-17-55
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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 manu-
al. 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 ve-
hicle 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 ve-
hicle 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 sig-
nificant 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:
This Service Manual contains information regarding periodic maintenance to the emission control
system. Please read this material carefully.
Designs and specifications are subject to change without notice.
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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
Failure to follow WARNING instructions could result in severe injury or death to
the motorcycle operator, a bystander or a person checking or repairing the mo-
torcycle.
CAUTION:
A CAUTION indicates special precautions that must be taken to avoid damage
to the motorcycle.
NOTE:
A NOTE provides key information to make procedures easier or clearer.
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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) ap-
pears.
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 sequen-
tially.
2
1
3
4
5
6
8
7
1
2
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SYMBOLS
The following symbols are not relevant to every
vehicle.
Symbols
1
to
9
indicate the subject of each
chapter.
1
General information
2
Specifications
3
Periodic checks and adjustments
4
Chassis
5
Engine
6
Cooling system
7
Fuel injection system
8
Electrical system
9
Troubleshooting
GEN
INFO
SPEC
3
4
CHK
ADJ
CHAS
5
6
ENG
COOL
7
8
FI
ELEC
9
10
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
TRBL
SHTG
11
12
13
14
15
16
17
18
19
20
Symbols
18
to
23
in the exploded diagrams indi-
cate the types of lubricants and lubrication
points.
18
Engine oil
19
Gear oil
20
Molybdenum-disulfide oil
21
Wheel-bearing grease
22
Lithium-soap- based grease
23
Molybdenum-disulfide grease
Symbols
24
to
25
in the exploded diagrams indi-
cate the following.
24
Apply locking agent (LOCTITE
)
25
Replace the part
21
22
23
24
25