Yamaha XT660R S Service Manual

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NOTICE
This manual was produced by MBK Industrie primarily for use by Yamaha dealers and their quali-
fied mechanics. It is not possible to include all the knowledge of a mechanic in one manual. There-
fore, anyone who uses this book to perform maintenance and repairs on Yamaha vehicles should
have a basic understanding of mechanics and the techniques to repair these types of vehicles.
Repair and maintenance work attempted by anyone without this knowledge is likely to render the
vehicle unsafe and unfit for use.
Yamaha 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.
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IMPORTANT MANUAL INFORMATION
Particularly important information is distinguished in this manual by the following.
The Safety Alert Symbol means ATTENTION! BECOME ALERT! YOUR
SAFETY IS INVOLVED!
Failure to follow WARNING instructions could result in severe injury or death
to the motorcycle operator, a bystander or a person checking or repairing
the motorcycle.
A CAUTION indicates special precautions that must be taken to avoid dam-
age to the motorcycle.
A NOTE provides key information to make procedures easier or clearer.
WARNING
CAUTION:
NOTE:

Yamaha XT660R S Specifications

General

Displacement	660 cc
Bore x Stroke	100.0 mm x 84.0 mm
Compression Ratio	10.0:1
Fuel System	Fuel Injection
Ignition System	TCI
Starter System	Electric
Transmission System	5-speed
Final Drive	Chain
Front Suspension System	Telescopic forks
Front Tyre	90/90-21 M/C 54S
Rear Tyre	130/80-17 M/C 65S
Overall Width	865 mm
Overall Height	1, 230 mm
Seat Height	865 mm
Wheelbase	1, 505 mm
Wet Weight	181 kg
Fuel Tank Capacity	15 litres
Oil Tank Capacity	2.9 litres
Engine Type	Liquid-cooled, 4-stroke, single cylinder, SOHC
Maximum Power	48hp (35kW) @ 6, 000rpm
Frame	Steel diamond
Rear Suspension System	Swingarm, (link suspension)
Front Brake	Single 298mm disc, 2-piston caliper
Rear Brake	Single Disc, 245 mm