Details
American pattern round chainsaw file
Round shape, double cut, more aggressive sharpening
Tighten tension on chain to firmly support cutters when filing
File from inside to outside of cutter
Place file against bevelled cutting surface of teeth 20° to 45° with saw
Follow saw manufacturers' specifications
Sharpen all left hand cutters on one side of chain
Then move to the other side and file all the right hand cutters
Check depth gauge height every 2 or 3 sharpenings
Height between cutting teeth and depth gauge is between .020" to .030"