Yamaha YP250 98 Manual

FOREWORD
This Supplementary Service Manual has been prepared to introduce new service and data for
the YP250 (J) ’98. For complete service information procedures it is necessary to use this Sup-
plementary Service Manual together with the following manual.
YP250 SERVICE MANUAL: 4UC-AE1
YP250 (J) ’98
SUPPLEMENTARY
SERVICE MANUAL
1997 by Yamaha Motor Co., Ltd.
First Edition, June 1997
Any reproduction or unauthorized use
without the written permission of
Yamaha Motor Co., Ltd.
is expressly prohibited.

NOTE:
CAUTION:
EB001000 NOTICE
This manual was produced by the Yamaha Motor Company primarily for use by Yamaha deal-
ersandtheirqualifiedmechanics.Itisnotpossibletoincludealltheknowledgeofamechanicin
one manual, so it is assumed that anyone who uses this book to perform maintenance and re-
pairsonYamahascooterhasabasicunderstandingofthemechanicalideasandtheprocedures
of scooter repair. Repairs attempted by anyone without this knowledge are likely to render the
scooter 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 Ya-
maha dealers and will appear in future editions of this manual where applicable.
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!
Failure to follow WARNING instructions could result in severe injury or
death to the scooter operator, a bystander or a person inspecting or re-
pairing the scooter.
A CAUTION indicates special precautions that must be taken to avoid
damage to the scooter.
NOTE: A NOTE provides key information to make procedures easier or clearer.

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YP002000 HOW TO USE THIS MANUAL
MANUAL ORGANIZATION
This manual consists of chapters for the main categories of subjects. (See “Illustrated sym-
bols”)
1st title 1: This is the title of the chapter with its symbol on the upper right corner of each
page.
2nd title 2: Thistitleindicatesthesectionofthe chapter and only appears on thefirstpageof
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 ac-
companied by corresponding illustrations.
EXPLODED DIAGRAMS
To heps identify parts and clarify procedure steps, there are exploded diagrams at start of each
removal and disassembly section.
1. An easy-to-see exploded diagram 4is provided for disassembly and assembly jobs.
2. Numbers 5are given in the order of jobs in the exploded diagram. A number that is en-
closed 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 7accompanies 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 8are given in
addition to the exploded diagram and the job instruction chart.