Yamaha WR450F, Owner'S Service Manual

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CHAS
EC554200
Base valve
1. Inspect:
• Valve assembly
1
Wear/damage
→
Replace.
• O-ring
2
Damage
→
Replace.
2
1
EC554400
Fork spring
1. Measure:
• Fork spring free length
a
Out of specification
→
Replace.
EC554502
Inner tube
1. Inspect:
• Inner tube surface
a
Score marks
→
Repair or replace.
Use #1,000 grit wet sandpaper.
Damaged oil lock piece
→
Replace.
• Inner tube bends
Out of specification
→
Replace.
Use the dial gauge
1
.
NOTE:
The bending value is shown by one half of the
dial gauge reading.
WARNING
Do not attempt to straighten a bent inner
tube as this may dangerously weaken the
tube.
EC554600
Outer tube
1. Inspect:
• Outer tube
1
Score marks/wear/damage
→
Replace.
Fork spring free length:
Standard Limit
460 mm (18.1 in) 455 mm (17.9 in)
Inner tube bending limit:
0.2 mm (0.008 in)
FRONT FORK