Yamaha FZ1-N Service Manual page 303

EAS26520
DISASSEMBLING THE WATER PUMP
1. Remove:
• Water pump seal "1"
• Water pump housing "2"
NOTE:
Tap out the water pump seal from the inside of
the water pump housing.
2. Remove:
• Oil seal "1"
• Bearing "2"
• Water pump housing "3"
NOTE:
Tap out the bearing and oil seal from the out-
side of the water pump housing.
3. Remove:
• Rubber damper holder "1"
• Rubber damper "2"
(from the impeller, with a thin, flat-head
screwdriver)
NOTE:
Do not scratch the impeller shaft.
EAS26540
CHECKING THE WATER PUMP
1. Check:
• Water pump housing cover "1"
• Water pump housing "2"
• Impeller "3"
• Rubber damper "4"
• Rubber damper holder "5"
• Water pump seals
• Oil seal
Cracks/damage/wear → Replace.
2. Check:
• Bearing
Rough movement → Replace.
3. Check:
• Water pump outlet pipe
Cracks/damage/wear → Replace.
EAS26560
ASSEMBLING THE WATER PUMP
1. Install:
• Oil seal "1"
(into the water pump housing "2")
NOTE:
• Before installing the oil seal, apply tap water
or coolant onto its out surface.
• Install the oil seal with a socket that matches
its outside diameter.
6-11
WATER PUMP