The guide should fit flush on the chain with only one tooth centered in the guide as shown below.

How to use a chainsaw file guide. Slide the file gently across the cutters. My take on using file guides.action starts at 2:15thanks for watching! The main thing is to make sure you always have a sharp chain to facilitate your work.

A round file sized to match the pitch of the chain. As you slide the file through the cutter, you should feel the grind. Just rotate it out of the way.

The file should grind against the cutter for you to be sure that it is. Identify the right angle step 3: Oregon® chainsaw filing guide, bar mount design, assists with filing chainsaw chain for better consistency and accuracy, 23820 part#.

Chainsaw file size as we will see on the graph, the primary file options are 4.0 mm, 4.8 mm, and 5.5 mm. To determine the size of your chainsaw file, measure the pitch of your chain. The pitch is determined by multiplying the number of teeth on the chain by 0.120 inches.

2 fasten it securely in a stump or log. How to sharpen chainsaw chain with a file: For 3/8 pitch chain, use a 4.8mm (3/16”) file.

Position the file at an angle of 30 degrees and file horizontally versus (relative) to the blade. Cut from the top and use a downward stroke along the chainsaw’s lower edge. Therefore, the file cannot be used as a guide for sharpening the chisel cutter.