Saw Chain Maintenance
File Direction We recommend that square saw chain be filed from the outside in (in a downward direction). This leaves a better edge on the chromed cutting surfaces and makes it easier to
keep the file’s position, and the resulting cutting edges, in correct alignment as shown in the preceding File Positioning section. However, filing from the outside in will wear out your file faster. Some square saw chain users may prefer to file from the inside out (in an upward direction). You should be aware that inside-out filing is much more difficult. But whichever direction you choose, be sure your file and your cutting edges stay positioned as shown in the preceding File Positioning section. File all cutters on one side of the saw chain, then reverse the saw chain and repeat the process. Use the same file positions for cutters on the opposite side of the saw chain. Tools Only use files specially designed for square chisel cutters, available from your chainsaw dealer.
Safety & Maintenance Manual
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