steering YAMAHA TTR90 2004 User Guide

3 - 18
INSP
ADJ
STEERING HEAD INSPECTION AND ADJUSTMENT
Loosen the ring nut one turn.
Retighten the ring nut using the ring nut
wrench.
WARNING
Avoid over-tightening.
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, main switch
7, handlebar 8, and front fender.
NOTE:
Install the handlebar holder with its groove
a facing outward.
The upper handlebar holder should be
installed with the punched mark b for-
ward.
CAUTION:
First tighten the bolts on the front side of
the handlebar holder, and then tighten
the bolts on the rear side.
T R..
Steering stem bolt:
40 Nm (4.0 m • kg, 2.9 ft • lb)
Front fork cap bolt:
40 Nm (4.0 m • kg, 2.9 ft • lb)
Handlebar upper holder:
23 Nm (2.3 m • kg, 17 ft • lb)
8
7
6
a

5 - 11
CHASSTEERING
EC560000
STEERING
LS
LS
T R..TIGHTENING STEPS:
•Tighten ring nut.
38 Nm (3.8 m • kg, 27 ft • Ib)
•Loosen it completely.
•Retighten it.
1 Nm (0.1 m • kg, 0.7 ft • Ib)
T R..40 Nm (4.0 m • kg, 29 ft • Ib)
5 9681076 43
21
Extent of removal:1 Under bracket removal2 Bearing removal
Extent of removal Order Part name Q’ty Remarks
STEERING REMOVAL
WARNINGSupport the machine securely so there is nodanger of it falling over.
Preparation for removal Hold the machine by placing the
suitable stand under the engine.
Front fork Refer to “FRONT FORK” section.
1 Steering stem bolt 1
2 Handle crown 1
3 Ring nut 1 Use special tool.
Refer to “STEERING HEAD INSPEC-
TION AND ADJUSTMENT” section in
the CHAPTER 3.
4 Ball race cover 1
5 Under bracket 1
6 Bearing inner race 2
7 Upper bearing ball 19
8 Lower bearing ball 16
9 Dust seal 1
10 Bearing outer race 2
2
1