Oil Seal Installation - Yamaha F20A Service Manual

POWR
CRANKCASE, CRANKSHAFT ASSY., AND
CYLINDER BODY
CAUTION:
Make sure the upper oil ring's end gap is
positioned correctly, then install the pis-
ton.
Install the piston with the "UP" mark on
the piston crown facing towards the fly-
wheel side.

Oil seal installation

1. Install:
Oil seal 1 and 2
CAUTION:
Do not install the oil seals after tightening
the crankcase bolts; this can damage the
oil seals.
5-42
E