I have a Poulan 2500 Farmhand saw torn down for a piston replacement and I was hoping to replace the seals and bearings also. My problem is that I can’t seem to figure out how to get the bearing and seal removed from the oil pump side of the shaft. The gear that drives the oil pump seems to be machined as part of the crankshaft and is too large to allow removing of the bearings and seal. Can anyone give me a helpful comment? Thanks!