Yamaha YZ450F(W), Owner'S Service Manual

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INSP
ADJ
FRONT FORK OIL SEAL AND DUST SEAL CLEANING/
FRONT FORK INTERNAL PRESSURE RELIEVING/
FRONT FORK REBOUND DAMPING FORCE ADJUSTMENT
EC36D001
FRONT FORK OIL SEAL AND DUST SEAL
CLEANING
1. Remove:
• Protector
• Dust seal
1
NOTE:
Use a thin screw driver, and be careful not to
damage the inner fork tube and dust seal.
2. Clean:
• Dust seal
a
• Oil seal
b
NOTE:
• Clean the dust seal and oil seal after every
run.
• Apply the lithium soap base grease on the
inner tube.
FRONT FORK INTERNAL PRESSURE
RELIEVING
NOTE:
If the front fork initial movement feels stiff dur-
ing a run, relieve the front fork internal pres-
sure.
1. Elevate the front wheel by placing a suit-
able stand under the engine.
2. Remove the air bleed screw
1
and release
the internal pressure from the front fork.
3. Install:
• Air bleed screw
EC36H002
FRONT FORK REBOUND DAMPING FORCE
ADJUSTMENT
1. Adjust:
• Rebound damping force
By turning the adjuster
1
.
Stiffer
a
→
Increase the rebound damp-
ing force. (Turn the adjuster
1
in.)
Softer
b
→
Decrease the rebound damp-
ing force. (Turn the adjuster
1
out.)
T
R
.
.
1 Nm (0.1 m · kg, 0.7 ft · lb)