2003 YAMAHA YZ85 steering

5 - 48
CHAS
EC564101
Bearing and ball race
1. Wash the bearings and ball races with a
solvent.
2. Inspect:

Bearing 1

Ball race
Pitting/damage → Replace bearings and
ball races as a set.
Install the bearing in the ball races. Spin
the bearings by hand. If the bearings hang
up or are not smooth in their operation in
the ball races, replace bearings and ball
races as a set.
5PA51510
EC565000
ASSEMBLY AND INSTALLATION
Lower bracket
1. Install:

Lower bearing 1
NOTE:
Apply the lithium soap base grease on the
bearing inner circumference.
5PA51520
2. Install:

Ball race

Upper bearing 1
NOTE:
Apply the lithium soap base grease on the
bearing.
5PA51530
3. Install:

Lower bracket 1
NOTE:
Apply the lithium soap base grease on the
bearing.
5PA51540
STEERING

5 - 49
CHAS
4. Install:

Washer 1

Ball race cover 2
5PA51550
5. Install:

Steering ring nut 1
Tighten the steering ring nut using the
steering nut wrench 2.
Refer to “STEERING HEAD INSPECTION
AND ADJUSTMENT” section in the CHAP-
TER 3.
5PA51560
T R..4 Nm (0.4 m · kg, 2.9 ft · lb)
6. Check the steering stem by turning it lock
to lock. If there is any binding, remove the
steering stem assembly and inspect the
steering bearings.
5PA51570
7. Install:

Front fork 1

Upper bracket 2
NOTE:

Temporarily tighten the pinch bolts (lower
bracket).

Do not tighten the pinch bolts (upper bracket)
yet.
5PA51580
8. Install:

Washer 1

Steering stem nut 2
5PAR0018
T R..125 Nm (12.5 m · kg, 90 ft · lb)
STEERING

5 - 50
CHAS
9. After tightening the nut, check the steering
for smooth movement. If not, adjust the
steering by loosening the steering ring nut
little by little.
10. Adjust:

Front fork top end a
Front fork top end (standard) a:
YZ85: 24 mm (0.94 in)
YZ85LW: Zero mm (Zero in)
5PA51600
11. Tighten:

Pinch bolt (upper bracket) 1

Pinch bolt (lower bracket) 2
CAUTION:
Tighten the lower bracket to specified
torque. If torqued too much, it may cause
the front fork to malfunction.5PA51610
T R..22 Nm (2.2 m · kg, 16 ft · lb)
T R..20 Nm (2.0 m · kg, 14 ft · lb)
STEERING