Chainsaw Repair

I have used both Meteor and OEM Stihl/Mahle brands for the 064 piston. You will have to remove some metal from the inner faces of the piston pin boss to clear the small end of the 372 rod and insure proper oiling. In order to figure out how much to take off I measured an OEM/Mahle 372 piston. I have machined it off and did it the redneck way with a good flat file. Easier to do it with a flat file on the Meteor pistons because the inner faces of the piston pin boss on Meteor pistons are already flat. The Mahle pistons are rounded and difficult to do with a file. Also make sure you have enough clearance on the skirt for the crank throws.