Yamaha XT660R S Service Manual

3 - 15
CHK
ADJ
ADJUSTING THE VALVE CLEARANCE
d. Hold the adjusting screw to prevent it from
moving and tighten the locknut to the speci-
fied torque.
e. Measure the valve clearance again.
f. If the valve clearance is still out of specifica-
tion, repeat all of the valve clearance adjust-
ment steps until the specified clearance is
obtained.
▲▲▲▲ ▲ ▲▲▲▲ ▲ ▲▲▲▲ ▲ ▲▲▲▲ ▲ ▲▲▲▲ ▲ ▲▲▲▲ ▲▲▲
8. Install:
• timing mark accessing screw
• crankshaft end accessing screw
9. Install:
• spark plug
10.Connect:
• spark plug cap
11.Install:
• camshaft sprocket cover
• O-rings 1
• intake tappet cover
• exhaust tappet cover
12.Install:
• air-filter-to-air-cut-off-valve hose
Refer to “AIR INDUCTION SYSTEM” in
chapter 7.
• radiator
Refer to “RADIATOR” in chapter 6.
• fuel tank
Refer to “FUEL TANK”.
• side panels (left and right)
• seat
Refer to “COWLING AND COVER”.
T
R
.
.
Locknut
14 Nm (1.4 m · kg, 10 ft · lb)
T
R
.
.
13 Nm (1.3 m · kg, 9.4 ft · lb)
T
R
.
.
10 Nm (1.0 m · kg, 7.2 ft · lb)
1
New
New
T
R
.
.
10 Nm (1.0 m · kg, 7.2 ft · lb)
T
R
.
.
10 Nm (1.0 m · kg, 7.2 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