Checking The Front Fork Legs; Checking The Front Fork Protector Guide; Cleaning The Front Fork Oil Seal And Dust Seal - Yamaha YZ450F Owner's Service Manual

1
TIP
• To maintain the proper wheel alignment, ad-
just both sides evenly.
• Push the rear wheel forward to make sure that
there is no clearance between the swingarm
end plates and the ends of the swingarm.
d. Tighten the locknut.
Locknut
21 Nm (2.1 m·kgf, 15 ft·lbf)
e. Tighten the wheel axle nut.
Wheel axle nut
135 Nm (13.5 m·kgf, 98 ft·lbf)
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CHECKING THE FRONT FORK LEGS

EASB111098
1. Stand the vehicle upright on a level surface.
EWA
WARNING
Securely support the vehicle so that there is
no danger of it falling over.
2. Check:
• Inner tube
Damage/scratches  Replace.
• Front fork leg (s)
Oil leaks between inner tube and outer tube
 Replace the oil seal.
3. Hold the vehicle upright and apply the front
brake.
4. Check:
• Front fork operation
Push down hard on the handlebar several
times and check if the front fork rebounds
smoothly.
Unsmooth operation  Correct or replace.
Refer to "FRONT FORK" on page 4-38.
a
b
2
3
3-29
CHECKING THE FRONT FORK PROTEC-
EASB111099
TOR GUIDE
1. Check:
• Protector guide "1"
Out of specification  Replace.
TIP
The protector guide reaches the limit of its use
when it is worn down to the same height "a" as
of the outer tube circumference.
CLEANING THE FRONT FORK OIL SEAL
EASB111100
AND DUST SEAL
1. Remove:
• Protector
• Dust seal "1"
ECA
NOTICE
Be careful not to damage the dust seal and
the inner tube by a driver.
1
CHASSIS
1
a