Yamaha YZ450FP 2023, Owner'S Service Manual

Page: 168 / 388

FRONT FORK
4-52
9. After filling, pump the damper assembly “1”
slowly up and down more than 10 times to
distribute the fork oil.
10.While protecting the damper assembly “1”
with a cloth and compressing fully, allow ex-
cessive oil to overflow on the base valve side.
NOTICE
ECA24540
Take care not to damage the damper assem-
bly.
11.Allow the overflowing oil to escape at the hole
“a” in the damper assembly.
TIP
The overflow measures about 10 cm³ (0.34
US oz, 0.35 Imp.oz).
12.Check:
• Damper assembly smooth movement
Tightness/binding/rough spots

Repeat the
steps (1) to (12).
13.Install:
• Dust seal “1”
•
Stopper ring “2”
• Oil seal “3”
•
Washer “4”
• Slide metal “5”
(to the inner tube “6”)
NOTICE
ECA24550
Make sure that the numbered side of the oil
seal faces bottom side.
TIP
• Apply the lithium-soap-based grease on the
dust seal lip and oil seal lip.
• Apply the fork oil on the inner tube.
•
When installing the oil seal, use vinyl seat “a”
with fork oil applied to protect the oil seal lip.
1
2
3
1
1
a
Ne w
Ne w
Ne w
LS