YAMAHA YFM660FS SERVICE MANUAL SUPPLEMENTARY
YFM660FS
5KM2-AE3
SUPPLEMENTARY
SERVICE MANUAL
FOREWORD
This Supplementary Service Manual has been prepared to introduce new service and data for the
YFM660FS. For complete service information procedures it is necessary to use this Supplementary
Service Manual together with the following manual.
YFM660F(P) 2002 SERVICE MANUAL: 5KM2-AE1
YFM660FR SUPPLEMENTARY SERVICE MANUAL: 5KM2-AE2
YFM660FS
SUPPLEMENTARY
SERVICE MANUAL
©2003 by Yamaha Motor Co., Ltd.
First edition, April 2003
All rights reserved.
Any reproduction or unauthorized use
without the written permission of
Yamaha Motor Co., Ltd.
is expressly prohibited.
EB001000
NOTICE
This manual was produced by the Yamaha Motor Company 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, so it is assumed that anyone who uses this book to perform maintenance and repairs on
Yamaha machine has a basic understanding of the mechanical ideas and the procedures of
machine repair. Repairs attempted by anyone without this knowledge are likely to render the
machine unsafe and unfit for use.
Yamaha Motor Company, Ltd. is continually striving to improve all 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.
OTE:
Designs and specifications are subject to change without notice.
IMPORTANT INFORMATION
Particularly important information is distinguished in this manual by the following notations.
The Safety Alert Symbol means ATTENTION! BECOME ALERT! YOUR
SAFETY IS INVOLVED!
WARNING
CAUTION:
NOTE:
Failure to follow WARNING instructions could result in severe injury or death
to the machine operator, a bystander or a person inspecting or repairing the
machine.
A CAUTION indicates special precautions that must be taken to avoid damage to the machine.
A NOTE provides key information to make procedures easier or clearer.
EB002000
HOW TO USE THIS MANUAL
MANUAL ORGANIZATION
This manual consists of chapters for the main categories of subjects. (See “Illustrated symbols”)
1st title 1: This is the title of the chapter with its symbol in the upper right corner of each page.
2nd title 2: This title indicates the section of the chapter and only appears on the first page of each
section. It is located in the upper left corner of the page.
3rd title 3: This title indicates a sub-section that is followed by step-by-step procedures accompanied by corresponding illustrations.
EXPLODED DIAGRAMS
To help identify parts and clarify procedure steps, there are exploded diagrams at the start of each
removal and disassembly section.
1. An easy-to-see exploded diagram 4 is provided for removal and disassembly jobs.
2. Numbers 5 are given in the order of the jobs in the exploded diagram. A number that is enclosed
by a circle indicates a disassembly step.
3. An explanation of jobs and notes is presented in an easy-to-read way by the use of symbol marks
6
. The meanings of the symbol marks are given on the next page.
4. A job instruction chart 7 accompanies the exploded diagram, providing the order of jobs, names
of parts, notes in jobs, etc.
5. For jobs requiring more information, the step-by-step format supplements 8 are given in addition
to the exploded diagram and the job instruction chart.
12
GEN
INFO
34
SPEC
CHK
ENG
ADJ
56
COOL
78
CARB
EB003000
ILLUSTRATED SYMBOLS
Illustrated symbols 1 to 0 are printed on the
top right of each page and indicate the subject
of each chapter.
General information
1
Specifications
2
Periodic checks and adjustments
3
Engine
4
Cooling system
5
Carburetion
6
Drive train
7
Chassis
8
Electrical
9
Troubleshooting
0
DRIV
90
–+
ELEC
AB
CD
EF
T
.
R
.
GH
CHAS
TRBL
SHTG
Illustrated symbols A to H are used to identify
the specifications appearing in the text.
Can be serviced with engine mounted
A
Filling fluid
B
Lubricant
C
Special tool
D
Torque
E
Wear limit, clearance
F
Engine speed
G
, V, A
Ω
H
IJK
LS
G
M
M
New
E
LMN
B
OP
LT
Illustrated symbols I to N in the exploded
diagrams indicate the types of lubricants and
lubrication points.
Apply engine oil
I
Apply gear oil
J
Apply molybdenum disulfide oil
K
Apply wheel bearing grease
L
Apply lightweight lithium-soap-based grease
M
Apply molybdenum disulfide grease
N
Illustrated symbols O to P in the exploded
diagrams indicate where to apply a locking
agent O and when to install a new part P.
Apply the locking agent (LOCTITE
O
Replace
P
)
CONTENTS
GENERAL INFORMATION
FEATURES ...............................................................................................1
OVERRIDE SWITCH (DEACTIVATING THE SPEED LIMITER
WHEN THE DIFFERENTIAL IS LOCKED) ...........................................1
SPECIFICATIONS
GENERAL SPECIFICATIONS ..................................................................3
MAINTENANCE SPECIFICATIONS .........................................................4
ENGINE ................................................................................................4
CHASSIS ..............................................................................................5
ELECTRICAL ........................................................................................5
CHASSIS
STEERING SYSTEM ................................................................................6
ELECTRICAL
CHECKING THE SWITCH ........................................................................7
SIGNAL SYSTEM .....................................................................................9
..........................................................................................................6
INSTALLING THE REAR BRAKE LEVER ............................................6
CHECKING THE SWITCH CONTINUITY .............................................7
CIRCUIT DIAGRAM ..............................................................................9
............................................................................................3
...................................................................................................7
..............................................................................1
YFM660FS WIRING DIAGRAM
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