Chainsaw Repair

I have a set of nylon drifts which are similar I use to install the circlips .The smaller diameter fits in the hollow of the pin,the larger shoves the clip in .To get a stubborn pin loose I use a 1/4" drive socket extension and tap it with a nylon hammer .I also have a few drifts that are make of aluminum .
Another tip I do,don't spare the oil,I mean drown it .If on a cold new start if that engine doesn't blow smoke about 5 minutes I worry I didn't use enough .