Yamaha YZ 2020 Series Owner's Service Manual page 163

Fork seal driver
90890-01502
Fork seal driver (48)
YM-A0948
19.Install:
• Stopper ring "1"
TIP
Fit the stopper ring correctly in the groove in the
outer tube.
20.Install:
• Dust seal "1"
New
TIP
Apply lithium-soap-based grease on the inner
tube.
21.Check:
• Inner tube smooth movement
Tightness/binding/rough spots  Repeat the
steps (14) to (20).
22.Measure:
23.Install:
TIP
Install the collar with its larger dia. end "a" facing
the fork spring.
1 New
24.Install:
4-49
• 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.
2
1
• Upper spring seat "1"
• Fork spring "2"
(to the damper assembly "3")
1
3
• Damper assembly "1"
(to the inner tube "2")
FRONT FORK
a
2
a