1YP250A_SMsuppl_1999.pdf

FOREWORD

This Supplementary Service Manual has been prepared to introduce new service and data for the YP250A

’99. For complete service information procedures it is necessary to use this Supplementary Service Manual

together with the following manual.

YP250 SERVICE MANUAL: 4UC-AE1

YP250 (J) SUPPLEMENTARY SERVICE MANUAL: 4UC-AE2

YP250D SUPPLEMENTARY SERVICE MANUAL: 5DF-AE1

YP250A ’99

SUPPLEMENTARY

SERVICE MANUAL

1998 by Yamaha Motor Co., Ltd.

First Edition, July 1998

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 scooter has a

basic understanding of the mechanical ideas and the procedures 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 Yamaha dealers and will appear

in future editions of this manual where applicable.

NOTE:

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

Failure to follow WARNING instructions could result in severe injury or death to the

scooter operator, a bystander or a person inspecting or repairing the scooter.

CAUTION:

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.

YP002000

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 on 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 sec-

tion. 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 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 4 is provided for disassembly and assembly jobs.

2. Numbers 5 are given in the order of 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.

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