Yamaha YZ450FA Automobile User Manual


 
5-28
FRONT FORK
CHECKING THE ADJUSTER
1. Inspect:
• Adjuster "1"
• O-ring "2"
Wear/damage Replace.
ASSEMBLING THE FRONT FORK
1. Wash the all parts in a clean solvent.
2. Stretch the damper assembly fully.
3. Fill:
• Front fork oil "1"
To damper assembly.
• Be sure to use recommended fork oil. If
other oils are used, they may have an ex-
cessively adverse effect on the front fork
performance.
• Never allow foreign materials to enter the
front fork.
4. After filling, pump the damper assembly "1"
slowly up and down (about 200 mm (7.9 in)
stroke) several times to bleed the damper
assembly of air.
Be careful not to excessive full stroke. A stroke
of 200 mm (7.9 in) or more will cause air to en-
ter. In this case, repeat the steps 2 to 4.
5. Measure:
• Oil level (left and right) "a"
Out of specificationAdjust.
6. Tighten:
• Locknut "1"
Fully finger tighten the locknut onto the damper
assembly.
Recommended oil:
Suspension oil "S1"
Oil capacity:
197 cm
3
(6.93 Imp oz, 6.66 US oz)
Standard oil level:
145–148 mm (5.71–5.83 in)
From top of fully stretched damper
assembly.