Yamaha XT660R S Service Manual

5 - 46
ENG
CLUTCH
2. Measure:
• clutch spring free length a
Out of specification → Replace the clutch
springs as a set.
Clutch spring free length
55.6 mm (2.19 in)
<Limit>: 52.82 mm (2.08 in)
EAS00284
CHECKING THE CLUTCH HOUSING
1. Check:
• clutch housing dogs
Damage/pitting/wear → Deburr the clutch
housing dogs or replace the clutch housing.
NOTE:
_
Pitting on the clutch housing dogs will cause
erratic clutch operation.
EAS00285
CHECKING THE CLUTCH BOSS
1. Check:
• clutch boss splines
Damage/pitting/wear → Replace the clutch
boss.
NOTE:
_
Pitting on the clutch boss splines will cause
erratic clutch operation.
EAS00286
CHECKING THE PRESSURE PLATE
1. Check:
• pressure plate 1
Cracks/damage → Replace.
• bearing 2
Damage/wear → Replace.
1
2
EAS00287
CHECKING THE PULL LEVER SHAFT AND
PULL ROD
1. Check:
• pull lever shaft pinion gear teeth 1
• pull rod teeth 2
Damage/wear → Replace the pull rod and
pull lever shaft pinion gear as a set.
1
2

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