7. 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. 21).
WARNING:
sharpened chain can cause excessive
motor speed during cutting, which may
result in severe motor damage.
WARNING:
WARNING:
injury.
Top Plate Sharpening Angles
(Fig. 22)
◾ ◾
CORRECT 30°- This optimal angle
can be obtained only when the
specified files and proper setting
are used. File holders are marked
with guide marks to align the file
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.
A dull or improperly
Improper chain sharpening increases the potential of kickback.
Failure to replace or repair a damaged chain can cause serious
21
Left Hand
Cutters
22
Top Plate Sharpening Angles
30°
CORRECT
POLE SAW ATTACHMENT — PSA1000
Right Hand
Cutters
LESS THAN 30°
MORE THAN 30°
INCORRECT
INCORRECT
29