Yamaha YZ450FA Automobile User Manual


 
5-27
FRONT FORK
CHECKING THE COLLAR
1. Inspect:
• Piston metal "1"
Wear/damage Replace.
CHECKING THE FORK SPRING
1. Measure:
• Fork spring free length "a"
Out of specification Replace.
CHECKING THE 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".
The bending value is shown by one half of the
dial gauge reading.
Do not attempt to straighten a bent inner
tube as this may dangerously weaken the
tube.
CHECKING THE OUTER TUBE
1. Inspect:
• Outer tube "1"
Score marks/wear/damage Replace.
Fork spring free length:
470 mm (18.5 in)
<Limit>: 465 mm (18.3 in)
Inner tube bending limit:
0.2 mm (0.008 in)