24
CARE AND MAINTENANCE
e. Keep a correct sharpening angle of 30°
between the le and the saw chain; see Fig.
13b & 13c. Always use a le holder (available
separately) when sharpening saw chains
by hand. File holders have markings for the
sharpening angle.
f. Using light but rm pressure, stroke towards the
front corner of the tooth. Lift the le away from
the steel on each return stroke.
g. Make a few rm strokes on every tooth. File all
left hand cutters in one direction. Then move
to the other side and le the right-hand cutters
in the opposite direction. Occasionally remove
lings from the le with a wire brush (Fig. 13d).
WARNING
• Improper chain sharpening increases the
potential of kickback.
• Failure to replace or repair a damaged chain can
cause serious injury.
Top Plate Sharpening Angles (Fig. 13e)
CORRECT 30°- This optimal angle can be obtained
only when the specied les and proper setting are
used. File holders are marked with guide marks
to align the le properly to produce the correct top
plate angle.
LESS THAN 30°- The tooth is too dull for cutting.
MORE THAN 30°- The edge of the cutting tooth is
feathered and dulls quickly.
13c
13b
5/32" (4.0mm)
Round File
Filing
Direction
Cutter tooth
Sharpening
Angle: 30°
13d
Left hand
cutters
Right hand
cutters
30°
13e
CORRECT
INCORRECT INCORRECT
Less than 30°
More than 30°
Top plate sharpening angles
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