Yamaha WR250F(N) Owner's Service Manual page 536

FRONT FORK
9. Install:
Slide metal 1
Oil seal washer 2
To outer tube slot.
NOTE:
Press the slide metal into the outer tube with
fork seal driver 3.
Fork seal driver:
YM-01442/90890-01442
10. Install:
Oil seal 1
NOTE:
Press the oil seal into the outer tube with fork
seal driver 2.
Fork seal driver:
YM-01442/90890-01442
11. Install:
Stopper ring 1
NOTE:
Fit the stopper ring correctly in the groove in
the outer tube.
12. Install:
Dust seal 1
NOTE:
Apply the lithium soap base grease on the
inner tube.
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CHAS