Yamaha WR450F(R) Owner's Service Manual page 416

OIL FILTER, WATER PUMP AND CRANKCASE COVER
(RIGHT)
EC4H4600
Bearing
1. Inspect:
Bearing
G
Rotate inner race with a finger.
Rough spot/seizure → Replace.
EC444400
Oil seal
1. Inspect:
Oil seal
G
Wear/damage → Replace.
ASSEMBLY AND INSTALLATION
EC4G5110
Oil seal
1. Install:
Oil seal 1
G
NOTE:
Apply the lithium soap base grease on the oil
G
seal lip.
Install the oil seal with its manufacture's
G
marks or numbers facing inward.
Bearing
1. Install:
Bearing 1
G
NOTE:
Install the bearing by pressing its outer race
parallel.
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ENG
New