Chainsaw Repair

There is also a tool that will help you pull the crank into the bearings after you have put the new bearings in the case. Husqvarna part number 502 50 30-15. This tool makes it very easy to get the crank into the bearings, eliminates any side thrust on the bearings and can be used to align the crank properly in the case. There are a couple of other tools that make the seals very easy to install.

Be VERY CAREFUL when disassembling the case especially on the oil pump/clutch side! Under the oil pomp there is a large flat washer that keeps the drive wheel from eating up the seal. There is a large bushing that the oil pump drive wheel rides on. Under that there is an o-ring (a very fine and fragile one) Do not loose or damage it. It is part 503 26 30-19 in the attached file.