Yamaha XT660R S Service Manual

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CHK
ADJ
CHECKING THE FRONT FORK/ADJUSTING THE REAR
SHOCK ABSORBER ASSEMBLY
3. Hold the motorcycle upright and apply the
front brake.
4. Check:
• front fork operation
Push down hard on the handlebar several
times and check if the front fork rebounds
smoothly.
Rough movement → Repair.
Refer to “FRONT FORK” in chapter 4.
EAS00156
ADJUSTING THE REAR SHOCK
ABSORBER ASSEMBLY
WARNING
_
Securely support the motorcycle so that
there is no danger of it falling over.
Spring preload
CAUTION:
_
Never go beyond the maximum or mini-
mum adjustment positions.
1. Adjust:
• spring preload
▼▼▼▼ ▼ ▼▼▼▼ ▼ ▼▼▼▼ ▼ ▼▼▼▼ ▼ ▼▼▼▼ ▼ ▼▼▼▼ ▼▼▼
a. Adjust the spring preload with the special
wrench provided in the owner’s tool kit.
b. Turn the adjusting ring 1 in direction a or
b.
c. Align the desired position on the adjusting
ring with the stopper 2.
▲▲▲▲ ▲ ▲▲▲▲ ▲ ▲▲▲▲ ▲ ▲▲▲▲ ▲ ▲▲▲▲ ▲ ▲▲▲▲ ▲▲▲
Direction a
Spring preload is
increased (suspension
is harder).
Direction b
Spring preload is
decreased (suspension
is softer).
Adjusting positions
Minimum: 1
Standard: 2
Maximum: 5

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