Yamaha YZ250F Owner's Service Manual page 158

OIL FILTER ELEMENT, WATER PUMP AND RIGHT
CRANKCASE COVER
REMOVAL POINTS
Impeller shaft
1. Remove:
• Impeller 1
• Washer 2
• Impeller shaft 3
NOTE:
Hold the impeller shaft on its width across the
flats a with spanners, etc. and remove the
impeller.
EC4G3210
Oil seal
NOTE:
It is not necessary to disassemble the water
pump, unless there is an abnormality such as
excessive change in coolant level, discolora-
tion of coolant, or milky transmission oil.
1. Remove:
• Bearing 1
2. Remove:
• Oil seal 1
INSPECTION
Oil delivery pipe
1. Inspect:
• Oil delivery pipe 1
Bend/damage → Replace.
Clogged → Blow.
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ENG