Husqvarna 331RB Workshop Manual page 35

a) Put the bearings in the crankcase and the
crankcase cover.
b) Use a hot air gun to increase the temperature of
the crankcase and crankcase cover to 110°C.
c) Use a hammer and an applicable punch to hit
the bearings into position.
d) Make sure that the bearings is against the
shoulder in the bearing seat.
2. Install the sealing rings in the crankcase and the
crankcase cover with the worn side up. Use an
applicable punch.
Note: The sealing ring on the flywheel side must be
0.5-1 mm below the edge of the bearing seat. Make
sure that the sealing ring levels with the crankcase
on the starter side.
3. Attach the crankshaft.
1281 - 001 -
a) Lubricate the stub axle of the crankshaft and the
large end of the connecting rod with some drops
of two-stroke oil. Do not put oil on the threads.
b) Carefully move the crankshaft (C) into the
bearing in the crankcase (D).
C
D
c) Make sure that the 2 guide bushings (F) are in
position in the crankcase.
d) Put a new crankcase gasket (E) on the
crankcase. Use grease to make sure that the
gasket stays in position.
F
E
Repair instructions - 35