Removing The Crankshaft; Checking The Oil Pump - Yamaha YFM45FAR Service Manual

CRANKSHAFT AND OIL PUMP

REMOVING THE CRANKSHAFT

1.Remove:
Crankshaft seal 1
G
NOTE:
Mark a note of the position of each crankshaft
seal so that they can be installed in the correct
place and in the correct direction.
2.Remove:
Crankshaft
G
Use a crankcase separating tool 1.

CHECKING THE OIL PUMP

1.Check:
Oil pump driven gear
G
Oil pump housing
G
Rotor cover
G
Cracks/wear/damage → Replace.
2.Measure:
Tip clearance a
G
(between the inner rotor 1 and the outer
rotor 2)
Side clearance b
G
(between the outer rotor 2 and the pump
housing 3)
Out of specification → Replace the oil pump.
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ENG
Crankcase separating tool:
P/N. YU-01135-A, 90890-01135
Tip clearance a:
0.15 mm (0.006 in)
<Limit>: 0.20 mm (0.008 in)
Side clearance b:
0.04 ~ 0.09 mm (0.002 ~ 0.004 in)