Checking The Oil Pump - Yamaha Raptor 90 YFM90RA 2011 Service Manual

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EAS00364

CHECKING THE OIL PUMP

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OIL PUMP
1. Check:
oil pump driven gear
Cracks/damage/wear
fective part(s).
2. Measure:
inner-rotor-to-outer-rotor-tip clearance
outer-rotor-to-oil-pump-housing clear-
ance
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oil-pump-housing-to-inner-rotor-and-
outer-rotor clearance
Out of specification
pump.
Inner rotor
Outer rotor
Oil pump housing
Inner-rotor-to-outer-rotor-tip clear-
ance
0.04 ~ 0.12 mm
(0.0016~0.0047in)
<Limit>: 0.15mm (0.006 in)
Outer-rotor-to-oil-pump-housing
clearance
0.14 ~ 0.21 mm
(0.0055~0.0083in)
<Limit>: 0.28 mm (0.011 in)
Oil-pump-housing-to-inner-rotor-
and-outer-rotor clearance
0.06 ~ 0.11mm (0.002~0.004 in)
<Limit>: 0.20 mm (0.0079 in)
ENG
Replace the de-
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Replace the oil