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. S).
WARNING:
A dull or improperly
sharpened chain can cause excessive
motor speed during cutting, which may
result in severe motor damage.
WARNING:
Improper chain sharpening increases the potential of kickback.
WARNING:
Failure to replace or repair a damaged chain can cause
serious injury.
Top Plate Sharpening Angles
(Fig. T)
◾
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.
Side Plate Sharpening Angle
(Fig. U)
◾
CORRECT 55°- The optimal angle
can be produced automatically if the
correct diameter file is used in the
file holder.
◾
HOOK-
“Grabs” and dulls quickly.
Increases potential of KICKBACK.
Results from using a file with a
T
Top Plate Sharpening Angles
LESS THAN 30°
MORE THAN 30°
30°
CORRECT
INCORRECT
INCORRECT
55°
U