Yamaha RS90K Manuel D'atelier page 586

b
a
REMOVAL
NOTE:
Turn the crankshaft clockwise.
DISASSEMBLY
NOTE:
Remove the water pump seal 1 from the inside of
the water pump housing 2.
NOTE:
Remove the bearing 1 and oil seal 2 from the
inside of the water pump housing 3.
1
NOTE:
2
Do not scratch the impeller shaft.
6-11
WATER PUMP
1. Remove:
• Timing mark accessing screw
• Crankshaft end accessing screw
2. Align:
• "I" mark a on the A.C. magneto rotor
(with the stationary pointer b on the A.C.
magneto cover)
3. Remove:
• Water pump assembly
1. Remove:
• Impeller
• Water pump seal 1
2. Remove:
• Bearing 1
• Oil seal 2
3. Remove:
• Rubber damper holder 1
• Rubber damper 2
(from the impeller, with a thin, flat-head
screwdriver)
COOL