Husqvarna 50 Workshop Manual page 58

13
Always use new crankshaft seals. Begin with the ignition
side. Apply grease to the crankshaft seal lip and carefully
slide the seal over the end of the crankshaft. The open
side of the seal must face inward. Drive the seal into the
crankcase using tool P/N 5025079-01 until the seal is
flush with the crankcase. Install the drive side crankshaft
seal in the same manner.
The remainder of reassembly is the reverse of
disassembly. Refer to the appropriate sections for
reassembly instructions.