Yamaha VMX12 93 Manual

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FOREWORD
This Supplementary Service Manual has been prepared to introduce new service and data for the
VMX12 ’93. For complete service information procedures it is necessary to use this Supplementary
Service Manual together with the following manual.
VMX12 ’86 SERVICE MANUAL: 2EN-ME1
VMX12 ’91 SUPPLEMENTARY SERVICE MANUAL: 2EN-AE1
VMX12 ’93
SUPPLEMENTARY
SERVICE MANUAL
1992 by Yamaha Motor Co., Ltd.
1st Edition, November 1992
All rights reserved.
Any reprinting or unauthorized use
without the written permission of
Yamaha Motor Co., Ltd.
is expressly prohibited.

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CAUTION:
NOTICE
This manual was written by Yamaha Motor Company Ltd. primarily for use by Yamaha dealers and
qualified mechanics. It is not possible to put an entire mechanic’s education into one manual, so per-
sonsusingthisbooktoperformmaintenanceandrepairsonYamahamotorcyclesshouldhaveabasic
understanding of the mechanical concepts and procedures inherent in motorcycle repair technology.
Without such knowledge, attempted repairs or service to the motorcycle may render it unfit to use
and/or unsafe.
Yamaha Motor Company Ltd. is continually striving to improve all models manufactured by Yamaha.
Modifications and significant changes in specifications or procedures will be forwarded to all Autho-
rized Yamaha dealers and will, where applicable, appear in future editions of this manual.
PARTICULARLY IMPORTANT INFORMATION
This material is distinguished by the following notation.
The Safety Alert Symbol means ATTENTION! BECOME ALERT! YOUR
SAFETY IS INVOLVED!
Failureto followWARNINGinstructions couldresultinsevereinjury ordeathto
the motorcycle operator, a bystander, or a person inspecting or repairing the
motorcycle.
ACAUTION indicates specialprecautions that mustbe taken toavoiddamage
to the motorcycle.
NOTE: A NOTE provides key information to make procedures easier or clearer.

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HOW TO USE THIS MANUAL
CONSTRUCTION OF THIS MANUAL
This manual consists of chapters for the main categories of subjects. (See “Illustrated symbols”)
1st title 1: This is a chapter with its symbol on the upper right of each page.
2nd title 2: This title appears on the upper of each page on the left of the chapter symbol.
(For the chapter “Periodic inspection and adjustment” the 3rd title appears.)
3rd title 3: This is a final title.
MANUAL FORMAT
Alloftheproceduresinthismanualareorganizedinasequential,step-by-stepformat.Theinformation
has been compiled to povide the mechanic with an easy to read, handy reference that contains com-
prehensive explanations of all disassembly, repair, assembly, and inspections.
Asetof particularly important procedure 4is placed between a lineof asterisks “ ” with eachproce-
dure preceded by “”.
IMPORTANT FEATURES
Data and a special tool are framed in a box preceded by a relevant symbol 5.
Anencirclednumeral 6indicatesapartname,andanencircledalphabeticalletterdataoranalign-
ment mark 7, the others being indicated by an alphabetical letter in a box 8.
Aconditionofafaultycomponentwillprecedeanarrowsymbolandthecourseofactionrequiredthe
symbol 9.
EXPLODED DIAGRAM
Eachchapterprovidesexplodeddiagramsbeforeeachdisassemblysectionforeaseinidentifyingcor-
rect disassembly and assembly procedures.