Yamaha XT660R S Service Manual

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CHK
ADJ
CHECKING THE TIRES/
CHECKING AND TIGHTENING THE SPOKES
WARNING
_
New tires have a relatively low grip on the
road surface until they have been slightly
worn. Therefore, approximately 100 km
should be traveled at normal speed before
any high-speed riding is done.
NOTE:
_
For tires with a direction of rotation mark
1
:
• Install the tire with the mark pointing in the
direction of wheel rotation.
• Align the mark
2
with the valve installation
point.
EAS00169
CHECKING AND TIGHTENING THE
SPOKES
The following procedure applies to all of the
spokes.
1. Check:
• spoke
1
Bends/damage
→
Replace.
Loose
→
Tighten.
Tap the spokes with a screwdriver.
NOTE:
_
A tight spoke will emit a clear, ringing tone; a
loose spoke will sound flat.
2. Tighten:
• spoke
(with a spoke wrench
2
)
NOTE:
_
Be sure to tighten the spokes before and after
break in.
T
R
.
.
3 Nm (0.3 m · kg, 2.2 ft · lb)

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