Husqvarna 543RBX Workshop Manual page 55

3. Attach the sealing rings.
4. Put the crankshaft in the crankcase half on the
flywheel side. Lubricate the stub axle with some oil
and carefully move the crankshaft into the bearing.
1239 - 001 -
5. Lubricate the crankshaft with some oil. Move the
crankcase half on the clutch side into position.
6. Tighten the 4 screws crosswise. Make sure that the
crankshaft can rotate easily.
Repair instructions- 55