Yamaha XT660R S Service Manual

4 - 34
CHAS
FRONT AND REAR BRAKES
5. Check:
• brake hoses
Cracks/damage/wear → Replace.
EAS00598
ASSEMBLING AND INSTALLING THE
FRONT BRAKE MASTER CYLINDER
WARNING
_
• Before installation, all internal brake com-
ponents should be cleaned and lubricated
with clean or new brake fluid.
• Never use solvents on internal brake
components.
1. Install:
• brake master cylinder 1
• brake master cylinder holder
NOTE:
_
• Install the brake master cylinder holder with
the “UP” mark a facing up.
• Align the end of the brake master cylinder
holder with the punch mark b on the handle-
bar.
• First, tighten the upper bolt, then the lower
bolt.
2. Install:
• copper washers
• brake hose
• union bolt
WARNING
_
Proper brake hose routing is essential to
insure safe motorcycle operation. Refer to
“CABLE ROUTING” in chapter 2.
NOTE:
_
• Install the brake hose within the range
shown.
• Turn the handlebar to the left and right to
make sure the brake hose does not touch
other parts (e.g., wire harness, cables,
leads). Correct if necessary.
Recommended brake fluid
DOT 4
1
b
a
T
R
.
.
7 Nm (0.7 m · kg, 5.1 ft · lb)
New
T
R
.
.
30 Nm (3.0 m · kg, 22 ft · lb)
40˚±10˚

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