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15
Note: This illustration shows file guide placement and filing direction for sharpening
cutters on left side of chain.
4. Hold file guide level. Make sure 30° mark on file guide is parallel to center of guide
bar (see Fig.16). This will ensure that you file the cutters at 30° angle.
5. File from inside towards outside of cutter until sharp. Only file in this one direction
(see Fig.16). (Note: Two or three strokes with file should be sufficient to sharpen cutter.)
Fig.16
Filing Cutter Depth Gauges
The cutter depth gauge clearance is reduced as cutters are sharpened. After every second
or third sharpening, reset cutter depth gauges.
1. Place depth gauge tool (.025") firmly across top of two cutters. Make sure depth gauge
enters slot in depth gauge tool (see Fig.17).
2. Use medium flat file. File depth gauge level with depth gauge tool.
3. Remove depth gauge tool. With flat file, round off front corner of cutter depth gauge
(see Fig.18).
After several hand filings, have an authorized service center or sharpening service
machine sharpen chain. This will insure even filing.
Fig.17
Fig.18