Yamaha XT660R S Service Manual

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CHAS
SWINGARM AND DRIVE CHAIN
EAS00703
REMOVING THE SWINGARM
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 rear wheel is elevated.
2. Measure:
• swingarm side play
• swingarm vertical movement
▼▼▼▼ ▼ ▼▼▼▼ ▼ ▼▼▼▼ ▼ ▼▼▼▼ ▼ ▼▼▼▼ ▼ ▼▼▼▼ ▼▼▼
a. Measure the tightening torque of the pivot
shaft nut.
b. Measure the swingarm side play
È
by mov-
ing the swingarm from side to side.
c. If the swingarm side play is out of specifica-
tion, check the spacers, bearings, and dust
covers.
d. Check the swingarm vertical movement
É
by moving the swingarm up and down.
If swingarm vertical movement is not
smooth or if there is binding, check the
spacers, bearings, and dust covers.
▲▲▲▲ ▲ ▲▲▲▲ ▲ ▲▲▲▲ ▲ ▲▲▲▲ ▲ ▲▲▲▲ ▲ ▲▲▲▲ ▲▲▲
3. Remove:
• swingarm shaft nut
• pivot shaft
• swingarm
T
R
.
.
Pivot shaft nut
92 Nm (9.2 m · kg, 66 ft · lb)
Swingarm side play (at the end of
the swingarm)
1.0 mm (0.04 in)
È
É

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