Yamaha XT660R S Service Manual

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CHAS
SWINGARM AND DRIVE CHAIN
5. Lubricate:
• drive chain
Recommended lubricant
Engine oil or chain lubricant
suitable for O-ring chains
6. Check:
• drive sprocket
• rear wheel sprocket
More than 1/4 tooth a wear → Replace the
drive chain sprockets as a set.
Bent teeth → Replace the drive chain
sprockets as a set.
b
Correct
1
Drive chain roller
2
Drive chain sprocket
EAS00711
INSTALLING THE SWINGARM
1. Lubricate:
• spacers
• dust covers
• pivot shaft
2. Install:
• bushings
1
• bearings
2
• spacers
3
(to swingarm)
Recommended lubricant
Lithium-soap-based grease
Installed depth of bearing a
4 mm (0.16 in)
Installed depth of bushing b
8 mm (0.31 in)
a
b
b
a
2
31 1
32

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