Yamaha XT660R S Service Manual

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CHK
ADJ
CHECKING THE FRONT AND REAR BRAKE PADS AND BRAKE PAD
PINS/ADJUSTING THE REAR BRAKE LIGHT SWITCH
EAS00118
CHECKING THE FRONT AND REAR BRAKE
PADS AND BRAKE PAD PINS
The following procedure applies to all of the
brake pads.
1. Operate the brake.
2. Check:
• front brake pads
XT660R
Wear indicator grooves
1
have almost dis-
appeared
→
Replace the brake pads as a
set.
XT660X
Wear limit
2
reached
→
Replace the brake
pads as a set.
Refer to “REPLACING THE FRONT
BRAKE PADS” in chapter 4.
3. Measure:
• rear brake pads
Wear limit
3
reached
→
Replace the brake
pads as a set.
Refer to “REPLACING THE REAR BRAKE
PADS” in chapter 4.
4. Check:
• brake pad pins
Damage/wear
→
Replace.
È
Front brake (XT660R)
É
Front brake (XT660X)
Ê
Rear brake (XT660R/XT660X)
Rear brake pad wear limit
1.0 mm (0.04 in)
È
É
3
Ê
EAS00128
ADJUSTING THE REAR BRAKE LIGHT
SWITCH
NOTE:
_
The rear brake light switch is operated by
movement of the brake pedal. The rear brake
light switch is properly adjusted when the
brake light comes on just before the braking
effect starts.

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