ENGINE
03-M-E3B, 03-M-DI-E3B, 03-M-E3BG, WSM
1-S99
(6) Oil Pump
Rotor Lobe Clearance
1. Measure the clearance between the lobes of the inner rotor and
the outer rotor with a feeler gauge.
2. Measure the clearance between the outer rotor and the pump
body with a feeler gauge.
3. If the clearance is more than the allowable limit, replace the
rotor assembly of the oil pump.
M00000003ENS0145US1
Clearance between Rotor and Cover
1. Put a strip of Plastigage on the rotor face with grease.
2. Install the cover and tighten the screws.
3. Remove the cover carefully.
4. Measure the width that Plastigage becomes flat with the scale
to get the oil clearance.
5. If the clearance is more than the allowable limit, replace the
rotor assembly of the oil pump.
M00000003ENS0146US1
(7) Starter
Overrunning Clutch
1. Examine the pinion and if it is worn or damaged, replace the
clutch assembly.
2. Examine that the pinion turns freely and smoothly in the
direction that it overruns. Make sure that it does not slip in the
direction that it cranks.
3. If the pinion slips or does not turn in the 2 directions, replace the
overrunning clutch assembly.
• Do not clean off the grease in the overrunning clutch with
the chemicals or oils.
M00000003ENS0147US1
Clearance between inner
rotor and outer rotor
Factory spec.
0.030 to 0.14 mm
0.0012 to 0.0055 in.
Allowable limit
0.2 mm
0.008 in.
Clearance between outer
rotor and pump body
Factory spec.
0.11 to 0.19 mm
0.0044 to 0.0074 in.
Allowable limit
0.25 mm
0.0098 in.
Clearance between inner
rotor and cover
Factory spec.
0.105 to 0.150 mm
0.00414 to 0.00590 in.
Allowable limit
0.20 mm
0.008 in.
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