Bearing, Oil Seal, O-Ring And Oil Pump Drive Gear; Assembly And Adjustment; Piston - Yamaha 25J Service Manual

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POWR

ASSEMBLY AND ADJUSTMENT

G71002-0
ASSEMBLY AND ADJUSTMENT
BEARING, OIL SEAL, O-RING AND OIL
PUMP DRIVE GEAR
1. Using press, install the oil pump drive
gear and the new bearing.
CAUTION:
When reassembling the lower crank bear-
ing and/or the oil-pump drive gear, the
chamfered bore edge side of the drive gear
and the seal-cap side of the bearing should
be installed towards the crank side, as
shown in the illustration.
2. Install the new oil seal in the oil seal
housing.
CAUTION:
The direction of the oil seal must be as
shown in the illustration, otherwise dam-
age will be caused.
3. Install the new O-ring.
4. Lubricate the bearing with two-cycle
outboard motor oil. Apply water resis-
tant grease or equivalent to the inside
lip of the oil seal and to the O-ring.
G72002-0

PISTON

1. Install the 2nd and top ring.
2. Align each ring end-gap with their locat-
ing pins.
5-11
E

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