Yamaha YZ250(W)/W1, Owner'S Service Manual

Page: 328 / 596

4-55
WATER PUMP
ENG
EC4G5220
Impeller shaft
1. Install:
9 Impeller shaft
1
NOTE:
9 Take care so that the oil seal lip is not damaged
or the spring does not slip off its position.
9 When installing the impeller shaft, apply the
lithium soap base grease on the oil seal lip and
impeller shaft. And install the shaft while turn-
ing it.
2. Install:
9 Plain washer
1
9 Impeller
2
NOTE:
Hold the impeller shaft on its width across the
flats
a
with spanners, etc. and install the
impeller.
3. Install:
9 Dowel pin
1
9 Gasket (water pump housing cover)
2
4. Install:
9 Water pump housing cover
1
9 Bolt (water pump housing cover)
2
9
Copper washer (coolant drain bolt) 3
9 Coolant drain bolt
4
10 Nm (1.0 m•kg, 7.2 ft•lb)
10 Nm (1.0 m•kg, 7.2 ft•lb)
14 Nm (1.4 m•kg, 10 ft•lb)
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