Installing The Water Pump - Yamaha YZF-R125 Service Manual

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• Water pump housing plate "2"
• Impeller shaft
• Impeller shaft retainer "3"
Impeller shaft retainer bolt
10 Nm (1.0 m·kg, 7.2 ft·lb)
LOCTITE®
NOTE:
• Before installing the impeller shaft retainer, lu-
bricate the slit on the impeller shaft end with a
thin coat of lithium-soap-based grease.
• Install the water pump housing gasket, water
pump housing plate, and impeller shaft retainer
as shown in the illustration.
• After installation, check that the impeller shaft
rotates smoothly.
3
EAS26580

INSTALLING THE WATER PUMP

1. Install:
• Water pump assembly "1"
• O-rings "2" New
NOTE:
• Align the projection "a" on the impeller shaft
with the slit "b" on the camshaft sprocket bolt.
• Lubricate the O-rings with a thin coat of lithium-
soap-based grease.
1
2. Fill:
• Cooling system
(with the specified amount of the recom-
mended coolant)
1 New
2
a
b
2
New
Refer to "CHANGING THE COOLANT" on
page 3-15.
3. Check:
• Cooling system
Leaks → Repair or replace the faulty part.
4. Measure:
• Radiator cap opening pressure
Below the specified pressure → Replace the
radiator cap.
Refer to "CHECKING THE RADIATOR" on
page 6-3.
6-9
WATER PUMP