Yamaha XT660R S Service Manual

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CHK
ADJ
LUBRICATING THE DRIVE CHAIN/
CHECKING AND ADJUSTING THE STEERING HEAD
EAS00142
LUBRICATING THE DRIVE CHAIN
The drive chain consists of many interacting
parts. If the drive chain is not maintained prop-
erly, it will wear out quickly. Therefore, the
drive chain should be serviced, especially
when the motorcycle is used in dusty areas.
This motorcycle has a drive chain with small
rubber O-rings between each side plate.
Steam cleaning, high-pressure washing, cer-
tain solvents, and the use of a coarse brush
can damage these O-rings. Therefore, use
only kerosene to clean the drive chain. Wipe
the drive chain dry and thoroughly lubricate it
with engine oil or chain lubricant that is suit-
able for O-ring chains. Do not use any other
lubricants on the drive chain since they may
contain solvents that could damage the O-
rings.
Recommended lubricant
Engine oil or chain lubricant
suitable for O-ring chains
EAS00146
CHECKING AND ADJUSTING THE
STEERING HEAD
1. Stand the motorcycle on a level surface.
WARNING
_
Securely support the motorcycle so that
there is no danger of it falling over.
NOTE:
_
Place the motorcycle on a suitable stand so
that the front wheel is elevated.
2. Check:
• steering head
Grasp the bottom of the front fork legs and
gently rock the front fork.
Binding/looseness
→
Adjust the steering
head.

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