Yamaha XT660X Service Manual

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CHAS
STEERING HEAD
EAS00679
REMOVING THE LOWER BRACKET
1. Stand the motorcycle on a level surface.
WARNING
_
Securely support the motorcycle so that
there is no danger of it falling over.
2. Remove:
• upper ring nut
1
• rubber washer
• lower ring nut
2
• lower bracket
NOTE:
_
Hold the lower ring nut with the steering nut
wrench
3
, and then remove the upper ring nut
with the ring nut wrench
4
.
WARNING
_
Securely support the lower bracket so that
there is no danger of it falling.
Steering nut wrench
90890-01403
Ring nut wrench
90890-01268
3
4
2
1
EAS00681
CHECKING THE STEERING HEAD
1. Wash:
• bearings
• bearing races
2. Check:
• bearings
• bearing races
Damage/pitting
→
Replace.
Recommended cleaning solvent
Kerosene

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