Yamaha WR450FX, Owner'S Service Manual

Page: 178 / 220

6-21
FRONT FORK
Be sure to install the spring guide "2"
when checking the oil level.
Never fail to make the oil level ad-
justment between the maximum
and minimum level and always ad-
just each front fork to the same
setting. Uneven adjustment can
cause poor handling and loss of
stability.
21. Measure:
•
Distance "a"
Out of specification
→
Turn into
the locknut.
22. Loosen:
• Rebound damping adjuster "1"
•
Loosen the rebound damping ad-
juster finger tight.
•
Record the set position of the ad-
juster (the amount of turning out the
fully turned in posi-tion).
23. Install:
•
Push rod "1"
• Fork spring "2"
•
Install the fork spring with the
damper rod "3" pulled up.
•
After installing the fork spring, hold
the damper rod end so that it will not
go down.
24. Install:
• Spring seat "1"
•
Front fork cap bolt "2"
Fully finger tighten the front fork cap
bolt onto the damper rod.
25. Tighten:
•
Front fork cap bolt (locknut) "1"
Hold the locknut "2" and tighten the
front fork cap bolt with specified
torque.
26. Install:
•
Front fork cap bolt "1"
To outer tube.
Temporarily tighten the cap bolt.
27. Install:
• Protector guide "1"
Install the protector guide with its wid-
er side "a" facing downward.
INSTALLING THE FRONT FORK
1. Install:
• Front fork "1"
• Temporarily tighten the pinch bolts
(lower bracket).
• Do not tighten the pinch bolts (up-
per bracket) yet.
2. Tighten:
• Front fork cap bolt
3. Adjust:
•
Front fork top end "a"
4. Tighten:
Distance "a":
18 mm (0.71 in) or more
Between damper rod
"1" top and locknut "2"
top.
Front fork cap bolt (lock-
nut):
29 Nm (2.9 m•kg, 21
ft•lb)
Front fork cap bolt:
30 Nm (3.0 m•kg, 22
ft•lb)
Front fork top end (stan-
dard) "a":
Zero mm (Zero in)
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