Air Bleeding From Front Fork; Adjusting The Front Fork Legs - Yamaha YZ450F Owner's Service Manual

2. Clean:
• Dust seal "a"
• Oil seal "b"
TIP
• Clean the dust seal and oil seal after every
run.
• Apply lithium-soap-based grease on the inner
tube.
b
LS

AIR BLEEDING FROM FRONT FORK

EASB111101
TIP
If the front fork initial movement feels stiff dur-
ing a run, relieve the front fork internal pres-
sure.
1. Use a suitable stand to raise the front wheel
off the ground.
EWA
WARNING
Securely support the vehicle so that there is
no danger of it falling over.
2. Remove the air bleed screw "1" and release
the internal pressure from the front fork.
3. Tighten:
• Air bleed screw
Air bleed screw
1.3 Nm (0.13 m·kgf, 0.94 ft·lbf)
1
EASB111102
a
3-30

ADJUSTING THE FRONT FORK LEGS

EWA32D1006
WARNING
• Always adjust the left and right front forks
evenly. If this is not done, the vehicle may
have poor stability.
• Securely support the vehicle so that there
is no danger of it falling over.
Rebound damping
ECA@
NOTICE
Do not turn the adjuster forcibly beyond its
adjusting range.
1. Adjust:
• Rebound damping
▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼
a. Turn the adjuster "1" in the direction of "a" or
"b" to make an adjustment.
Direction "a"
Rebound damping is increased (sus-
pension is harder).
Direction "b"
Rebound damping is decreased (sus-
pension is softer).
Rebound damping adjusting posi-
tions
Maximum
Fully turned in
Standard
11 clicks out*
Minimum
20 clicks out*
* With the adjuster fully turned in
1
a
b
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CHASSIS