Kobalt 1447232 - Top Plate Sharpening Angles

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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 specied 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