BRP Johnson J30TEL4SUA 2007 Service Manual page 168

POWERHEAD
PISTON, CYLINDER, AND CRANKSHAFT
If removed, install the crankshaft main bearings.
Apply engine oil to the bearing wear surfaces. DO
NOT apply oil between the bearing holder and the
back of the bearing.
1
1. Upper bearing shells
2. Lower bearing shells
IMPORTANT:
Make sure that the bearing tab is
aligned with the notches in the cylinder and the
crankcase.
1
1. Bearing tab
If removed, install the main thrust bearing in the
cylinder block between the No. 2 and No. 3 cylin-
ders. Apply engine oil to the bearing.
166
IMPORTANT:
bearing must face toward the crank webs.
2
1. Thrust bearing
2. Oil grooves
001570
Apply engine oil to the lip of a new upper oil seal.
Install the upper oil seal to the crankshaft. Make
sure that the lip of the seal is facing inward.
Apply engine oil to the crank pin and the crank-
shaft main journal. Install the crankshaft in the cyl-
inder.
001571
1. Oil seal
2. Crankshaft main journal
3. Crank pin
The oil groove sides of the thrust
2
1
001567
3
2
1
001593