Yamaha XT660X Service Manual

4 - 58
CHAS
FRONT FORK
3. Check:
• damper rod 1
Damage/wear → Replace.
Obstruction → Blow out all of the oil pas-
sages with compressed air.
• oil flow stopper 2
Damage → Replace.
CAUTION:
_
• The front fork leg has a built-in damper
adjusting rod and a very sophisticated
internal construction, which are particu-
larly sensitive to foreign material.
• When disassembling and assembling the
front fork leg, do not allow any foreign
material to enter the front fork.
2
1
EAS00659
ASSEMBLING THE FRONT FORK LEGS
The following procedure applies to both of the
front fork legs.
WARNING
_
• Make sure the oil levels in both front fork
legs are equal.
• Uneven oil levels can result in poor han-
dling and a loss of stability.
NOTE:
_
• When assembling the front fork leg, be sure
to replace the following parts:
- inner tube bushing
- outer tube bushing
- oil seal
- dust seal
• Before assembling the front fork leg, make
sure all of the components are clean.
1. Install:
• damper rod 1
• rebound spring 2
CAUTION:
_
Allow the damper rod assembly to slide
slowly down the inner tube
3 until it pro-
trudes from the bottom of the inner tube.
Be careful not to damage the inner tube.
2
1
3

Yamaha XT660X Specifications

General

Displacement	660cc
Bore x Stroke	100.0 mm x 84.0 mm
Compression Ratio	10.0:1
Fuel System	Fuel Injection
Ignition System	TCI
Transmission	5-speed
Final Drive	Chain
Rear Brake	Single disc, Ø 245 mm
Front Tyre	120/70 R17
Rear Tyre	160/60 R17
Maximum Power	48 HP (35.3 kW) @ 6, 000 rpm
Maximum Torque	58.4Nm (43.1lb-ft) @ 5, 250rpm
Front Suspension	Telescopic fork
Rear Suspension	Swingarm, (link suspension)
Fuel Tank Capacity	15 litres
Engine Type	Liquid-cooled, 4-stroke, single cylinder, SOHC, 4-valves