Yamaha XT660R S Service Manual

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CHK
ADJ
ADJUSTING THE ENGINE IDLING SPEED/
ADJUSTING THE THROTTLE CABLE FREE PLAY
EAS00054
ADJUSTING THE ENGINE IDLING SPEED
NOTE:
_
Prior to adjusting the engine idling speed, the
air filter element should be cleaned, and the
engine should have adequate compression.
1. Start the engine and let it warm up for sev-
eral minutes.
2. Check:
• engine idling speed
Out of specification
→
Adjust.
3. Adjust:
• engine idling speed
▼▼▼▼ ▼ ▼▼▼▼ ▼ ▼▼▼▼ ▼ ▼▼▼▼ ▼ ▼▼▼▼ ▼ ▼▼▼▼ ▼▼▼
a. Turn the throttle stop screw
1
in direction
a
or
b
until the specified engine idling
speed is obtained.
▲▲▲▲ ▲ ▲▲▲▲ ▲ ▲▲▲▲ ▲ ▲▲▲▲ ▲ ▲▲▲▲ ▲ ▲▲▲▲ ▲▲▲
4. Adjust:
• throttle cable free play
Refer to “ADJUSTING THE THROTTLE
CABLE FREE PLAY”.
Engine idling speed
1,300 ~ 1,500 r/min
Direction a
Engine idling speed is
increased.
Direction b
Engine idling speed is
decreased.
Throttle cable free play (at the
flange of the throttle grip)
3.0 ~ 5.0 mm (0.12 ~ 0.20 in)
EAS00056
ADJUSTING THE THROTTLE CABLE FREE
PLAY
NOTE:
_
Prior to adjusting the throttle cable free play,
the engine idling speed should be adjusted
properly.

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