Yamaha VMX12H Supplementary Service Manual page 51

This manual was written by the Yamaha Motor Company primarily for use by Yamaha dealers and
their qualified mechanics. It is not possible to put an entire mechanic's education into one manual,
so it is assumed that persons using this book to perform maintenance and repairs on Yamaha motor-
cycles have a basic understanding of the mechanical concepts and procedures inherent in motorcycle
repair technology. Without such knowledge, attempted repairs or service to this model may render
unfit to use and/or unsafe.
it
/ - - This model has been designed and manufactured to perform within certain specifications in regard to
performance and emissions. Proper service with the correct tools is necessary to ensure that the
motorcycle will operate as designed. If there is any question about a service procedure, it is impera-
tive that you contact
This policy is intended to provide the customer with the most satisfaction from his motorcycle and
to conform with federal environmental quality objectives.
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
Authorized Yamaha dealers and will, where applicable, appear in future editions of this manual.
NOTE:
This Service Manual contains information regarding periodic maintenance to the emission control
system for the VMX12N/NC. Please read this material carefully.
PARTICULARLY IMPORTANT INFORMATION
This material is distinguished by the following notations.
NOTE:
MANUAL FORMAT
All of the procedures in this manual are organized in a sequential, step-by-step format. The informa-
tion has been compiled to provide the mechanic with an easy to read, handy reference that contains
comprehensive explanations 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
course of action required will follow the symbol,
Bearings:
Pitting/Damage
EXPLODED DIAGRAM
Each chapter provides exploded diagrams before each disassembly section for ease in identifying
correct disassembly and assembly procedures.
a Yamaha dealer for any service information changes that apply to this model.
HOW TO USE THIS MANUAL
A NOTE provides key information to make procedures easier or clearer.
A CAUTION indicates special procedures that must be followed to avoid damage to
the motorcycle.
A WARNING indicates special procedures that must be followed to avoid injury to a
motorcycle operator or person inspecting or repairing the motorcycle.
Replace.
NOTICE
e.g.,
TECHNICAL PUBLICATIONS
SERVICE DIVISION
MOTORCYCLES OPERATIONS
YAMAHA MOTOR CO., LTD.