Yamaha TTR90(M), Owner'S Service Manual

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INSP
ADJ
STEERING HEAD INSPECTION AND ADJUSTMENT
3. Check:
●
Steering smooth action
Turn the handlebar lock to lock.
Unsmooth action
→
Adjust steering ring
nut.
4. Adjust:
●
Steering ring nut
Steering ring nut adjustment steps:
●
Remove the front fender 1 .
●
Remove the handlebar and handle crown.
●
Loosen the ring nut 2 using the ring nut
wrench 3 .
Ring nut wrench:
YU-01268/90890-01268
●
Tighten the ring nut 4 using ring nut
wrench 5 .
Ring nut wrench:
YM-33975/90890-01403
T
R
.
.
Ring nut (initial tightening):
38 Nm (3.8 m • kg, 27 ft • lb)
●
Loosen the ring nut one turn.
●
Retighten the ring nut using the ring nut
wrench.
T
R
.
.
Ring nut (final tightening):
1 Nm (0.1 m • kg, 0.7 ft • lb)
●
Check the steering shaft by turning it lock
to lock. If there is any binding, remove the
steering shaft assembly and inspect the
steering bearings.
●
Install the handle crown 6 , handlebar 7 ,
and front fender.
2
3
5
4
NOTE:
Set the torque wrench to the ring nut
wrench so that they form a right angle.
WARNING
Avoid over-tightening.