Yamaha YZ450F(D) Owner's Service Manual page 160

15. Install:
• Dust seal "1"
• Stopper ring "2"
• Oil seal "3"
• Oil seal washer "4"
• Slide metal "5"
To inner tube "6".
• Apply the fork oil on the inner tube.
• When installing the oil seal, use vi-
nyl seat "a" with fork oil applied to
protect the oil seal lip.
• Install the oil seal with its manufac-
ture's marks or number facing the
axle holder side.
16. Install:
• Piston metal "1"
Install the piston metal onto the slot
on inner tube.
17. Install:
• Outer tube "1"
To inner tube "2".
18. Install:
• Slide metal "1"
• Oil seal washer "2"
To outer tube slot.
Press the slide metal into the outer
tube with fork seal driver "3".
Fork seal driver:
YM-A0948/90890-01502
19. Install:
• Oil seal "1"
Press the oil seal into the outer tube
with fork seal driver "2".
Fork seal driver:
YM-A0948/90890-01502
20. Install:
• Stopper ring "1"
Fit the stopper ring correctly in the
groove in the outer tube.
5-21
FRONT FORK
21. Install:
• Dust seal "1"
Apply the lithium soap base grease
on the inner tube.
22. Check:
• Inner tube smooth movement
Tightness/binding/rough spots →
Repeat the steps 15 to 21.
23. Measure:
• Distance "a"
Out of specification → Turn into
the locknut.
Distance "a":
16 mm (0.63 in) or more
Between the damper
assembly "1" bottom
and locknut "2" bot-
tom.
24. Install:
• Collar "1"
• Fork spring "2"
To damper assembly "3".
Install the collar with its larger dia.
end "a" facing the fork spring.