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e. Keep a correct sharpening angle of 30°
between the file and the saw chain (see
Fig. 20b & 20c). Always use a file holder
(available separately) when sharpening saw
chains by hand. File holders have markings
for the sharpening angle.
f. Using light but firm pressure, perform a
stroke towards the front corner of the tooth.
Lift the file away from the steel on each
return stroke.
g. Make a few firm strokes on every tooth. File
all left hand cutters in one direction. Then
move to the other side and file the right-hand
cutters in the opposite direction. Occasionally
remove filings from the file with a wire brush
(Fig. 20d).
WARNING
kickback.
WARNING
serious injury.
Improper chain sharpening
increases the potential of
Failure to replace or repair
a damaged chain can cause
Fig . 20b
1/8" (3.2 mm)
Round file
Filing Direction
Fig . 20c
Fig . 20d
Left hand
cutters
Cutter tooth
Sharpening
Angle: 30°
Right hand
cutters
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