Checking The Water Pump; Checking The Oil Cooler - Yamaha YP400T, YP400V, YP400W Service Manual

WATER PUMP AND OIL COOLER
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CHECKING THE WATER PUMP

1. Check:
• water pump cover
• impeller shaft
• water pump seal
Cracks/damage/wear → Replace.
2. Check:
• bearing
Rough movement → Replace.
3. Check:
• water pump inlet hose
• water pump outlet hose
• thermostat inlet hose
Cracks/damage → Replace.

CHECKING THE OIL COOLER

1. Check:
• oil cooler pipe 1
Cracks/damage → Replace.
2. Check:
• oil cooler cover 1
Cracks/damage → Replace.
3. Check:
• oil cooler outlet hose
Cracks/damage → Replace.
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