This manual was written by the Yamaha Motor
Company primarily for use by Yamaha dealers and
qualified mechanics. It is not possible to put
an entire mechanics education into one manu
al, so it is assumed that persons using this book
to perform maintenance and repairs on Yamaha
generator have a basic understanding
and procedures inherent
generator repair technology. Without such
knowledge, attempted repairs or service to this
model may render it unfit for use and/or unsafe.
Company Ltd. is continually striv
to further improve all models manufactured
by Yamaha. Modifications and significant
changes in specifications or procedures will be for
to all Authorized Yamaha dealers and will,
where applicable, appear in future editions of this
This Service Manual contains information
regarding periodic maintenance to the emis
control system. Please read this materi
©1995 by Yamaha Motor Co., Ltd.
1st Edition, January 1995
All rights reserved. Any reprinting or
without the written
Yamaha Motor Co., ltd.
is expressly prohibited.
HOW TO USE THIS MANUAL
This material is distinguished by the following no
The Safety Alert Symbol means ATTENTION!
ALERT! YOUR SAFETY IS INVOLVED!
Failure to follow WARNING instructions could
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 proce
dures easier or
The procedures in this manual are organized
in a sequential, step-by-step format. The in
formation has been compiled to provide the
mechanic with an easy to read, handy refer
that contains comprehensive explana
tions of all disassembly, repair, assembly,
and inspection operations.
In this revised format, the condition of a faulty
component will precede an arrow symbol and the
of action required will follow the symbol,
Pitting/ Damage~ Replace.
Each chapter provides exploded diagrams before
disassembly section for ease in identifying
disassembly and assembly procedures.