Yamaha YZ450FA Automobile User Manual


 
4-43
OIL FILTER ELEMENT AND WATER PUMP
REMOVING THE IMPELLER SHAFT
1. Remove:
• Impeller "1"
•Washer "2"
• Impeller shaft "3"
Hold the impeller shaft on its width across the
flats "a" with spanners, etc. and remove the im-
peller.
REMOVING THE OIL SEAL
It is not necessary to disassemble the water
pump, unless there is an abnormality such as
excessive change in coolant level, discolor-
ation of coolant, or milky transmission oil.
1. Remove:
•Bearing "1"
•Oil seal "2"
CHECKING THE IMPELLER SHAFT
1. Inspect:
• Impeller shaft "1"
Bend/wear/damage Replace.
Fur deposits Clean.