Yamaha YZ250N Owner's Service Manual page 316

WATER PUMP
EC444300
Impeller shaft gear
1. Inspect:
9Gear teeth a
Wear/Damage
EC4H4600
Bearing
1. Inspect:
9Bearing 1
Rotate inner race with a finger.
Rough spot/Seizure
EC444400
Oil seal
1. Inspect:
9Oil seal 1
Wear/Damage
EC4G5000
ASSEMBLY AND INSTALLATION
EC4G5111
Oil seal
1. Install:
9Oil seal 1
NOTE:
9Apply the lithium soap base grease on the oil
seal lip.
9Install the oil seal with its manufacture's marks
or numbers facing the crankcase cover (right)
2.
2. Install:
9Bearing 1
NOTE:
Install the bearing by pressing its outer race par-
allel.
4-53
ENG
Replace.
Replace.
Replace.