Yamaha YZ450FX 2019 Owner's Service Manual page 173

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.
15.Install:
• Piston metal "1"
New
TIP
Install the piston metal onto the slot on inner
tube.
16.Install:
• Outer tube "1"
(to the inner tube "2")
17.Install:
• Slide metal "1"
• Washer "2"
(to the outer tube)
TIP
LS
Press the slide metal into the outer tube with fork
seal driver "3".
18.Install:
• Oil seal "1"
TIP
Using a fork seal driver "2", press the oil seal in
until the stopper ring groove fully appears.
4-45
FRONT FORK
Fork seal driver
90890-01502
Fork seal driver (48)
YM-A0948
New