Yamaha YZ450FA 2011 Owner's Service Manual page 238

HANDLING NOTE
Support the machine securely so there is no
danger of it falling over.
REMOVING THE STEERING RING NUT
1. Remove:
• Steering ring nut "1"
Use the steering nut wrench "2".
Steering nut wrench:
YU-33975/90890-01403
Support the steering stem so that it may not
fall down.
REMOVING THE LOWER BEARING
1. Remove:
• Lower bearing "1"
Use the floor chisel "2".
Take care not to damage the steering shaft
thread.
REMOVING THE BEARING RACE
1. Remove:
• Bearing race "1"
Remove the bearing race using long rod "2"
and the hammer.
CHECKING THE STEERING STEM
1. Inspect:
• Steering stem "1"
Bend/damage → Replace.
CHECKING THE BEARING AND BEARING
RACE
1. Wash the bearings and bearing races with a
solvent.
2. Inspect:
• Bearing "1"
• Bearing race
Pitting/damage → Replace bearings and
bearing races as a set.
Install the bearing in the bearing races. Spin
the bearings by hand. If the bearings hang
up or are not smooth in their operation in the
bearing races, replace bearings and bearing
races as a set.
5-44
STEERING