Yamaha XT660R S Service Manual

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CHAS
REAR WHEEL, BRAKE DISC, AND REAR WHEEL
SPROCKET
EAS00561
REMOVING THE REAR WHEEL
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. Loosen:
• locknut
1
• adjusting nut
2
3. Remove:
• stabilizer (XT660X)
• chain cover
• wheel axle nut
3
• washer (N)
• wheel axle
• washer (O)
• rear wheel
NOTE:
_
Push the rear wheel forward and remove the
drive chain from the rear wheel sprocket.
4. Remove:
• brake caliper
NOTE:
_
Do not depress the brake pedal when remov-
ing the brake caliper.
EAS00566
CHECKING THE REAR WHEEL
1. Check:
• wheel axle
• rear wheel
• wheel bearings
• oil seals
Refer to “CHECKING THE FRONT
WHEEL”.

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