BOMBARDIER 1980 Shop Manual page 65

When positioning P.T.O. outer bearing on crankshaft. a
gap of 0.5 mm (.020") must be left between bearing
and labyrinth sleeve to avoid axial forces to the beaflng.
.,
0.5 mm
@At assembly. apply a light coat of lithium grease on
seal lips.
To insure adequate oil supply to the bearings (magneto
and PTO. sides). install oil seals with a gap of at
least 0.60 mm (.025") with bearing.
SECTION 03
SUB-SECTION 02, (ENGINES)
(354-454 ENGINE TYPES). PAGE 7