IMPORTANT
This manual was produced by the PT. Yamaha Indonesia Motor Mfg. primarily for use by Yamaha deal-
ers and their qualified mechanics. It is not possible to include alll the knowledge of a mechanic in one
manual. Therefore, anyone who uses this book to perform maintenance and repairs on Yamaha vehi-
cles should have a basic understanding of mechanics and the techniques to repair these types of ve-
hicles. Please refer to “BASIC INFORMATION” (separate volume, YOA-28197-E0*) for basic
instructions that must be observed during servicing. Repair and maintenance work attempted by any-
‘one without this knowledge is likely to render the vehicle unsafe and unfit for use.
PT. Yamaha Indonesia Motor Mfg. is continually striving to improve all of 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.
TIP
‘+ * If the contents of the manual are revised, the last digit of the manual number will be increased by
one.
* Designs and specifications are subject to change without notice.
IMPORTANT MANUAL INFORMATION
Particularly important information is distinguished in this manual by the following notations.
This is the safety alert symbol. It is used to alert you to potential personal inju-
a ry hazards. Obey all safety messages that follow this symbol to avoid possible
injury or death.
‘A WARNING indicates a hazardous situation which, if not avoided, could result
A WARNING in death or serious injury.
A NOTICE indicates special precautions that must be taken to avoid damage to
NOTICE the vehicle or other property.
TIP ATIP provides key information to make procedures easier or clearer.
MTN320-A
SERVICE MANUAL
©2020 by PT. Yamaha Indonesia Motor Mfg.
First edition, December 2019
All rights reserved.
Any reproduction or unauthorized use
without the written permission of
PT. Yamaha Indonesia Motor Mfg.
is expressly prohibited.
Printed in Indonesia.
cso
HOW TO USE THIS MANUAL
This manual is intended as a handy, easy-to-read reference book for the mechanic. Comprehensive
explanations of all installation, removal, disassembly, assembly, repair and check procedures are laid
out with the individual steps in sequential order.
* The manual is divided into chapters and each chapter is divided into sections. The current section title
“1” is shown at the top of each page.
* Sub-section titles “2” appear in smaller print than the section title.
* To help identify parts and clarify procedure steps, there are exploded diagrams “3” at the start of each
removal and disassembly section.
+ Numbers “4” are given in the order of the jobs in the exploded diagram. A number indicates a disas-
sembly step.
* Symbols “5” indicate parts to be lubricated or replaced.
Refer to “SYMBOLS”.
* Ajob instruction chart “6” accompanies the exploded diagram, providing the order of jobs, names of
parts, notes in jobs, etc. This step explains removal and disassembly procedure only. For installation
and assembly procedure, reverse the steps.
+ Jobs “7” requiring more information (such as special tools and technical data) are described sequen-
tially.
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SYMBOLS
The following symbols are used in this manual for easier understanding.
TIP
The following symbols are not relevant to every vehicle.
SYMBOL DEFINITION SYMBOL DEFINITION
ots| Serviceable with engine mounted 4 Gear oil
N Filling fluid 4 Molybdenum disulfide oil
Lubricant 4 Brake fluid
Special tool +A | Wheel bearing grease
Tightening torque Lithium-soap-based grease
@— (DOI eI Silt
Wear limit, clearance MBA | Molybdenum disulfide grease
Engine speed =ESP4 Silicone grease
rn
Electrical data Aa Apply locking agent (LOCTITE®).
Engine oil Replace the part with a new one.
~ TABLE OF CONTENTS
GENERAL INFORMATION
SPECIFICATIONS
PERIODIC CHECKS AND
ADJUSTMENTS
CHASSIS
ENGINE
COOLING SYSTEM
FUEL SYSTEM
ELECTRICAL SYSTEM
APPENDIX
folalN{[oal[alalo]nr| |
GENERAL INFORMATION
IDENTIFICATION ...
VEHICLE IDENTIFICATION NUMBER
ENGINE SERIAL NUMBER
MODEL LABEL..
FEATURES...
MULTI-FUNCTION METER UNIT
SPECIAL TOOLS
IDENTIFICATION
IDENTIFICATION
VEHICLE IDENTIFICATION NUMBER
The vehicle identification number “1” is stamped
into the frame under the passenger seat.
ENGINE SERIAL NUMBER
The engine serial number “1” is stamped into the
crankcase.
<7 PUL
MODEL LABEL
The model label “1” is affixed to the frame under
the passenger seat. This information will be
needed to order spare parts.
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