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HOW TO SHARPEN THE CUTTERS
See Figures 36 - 37.
Be careful to file all cutters to the specified angles
and to the same length, as fast cutting can be
obtained only when all cutters are uniform.
Wear gloves for protection. Properly tension
the chain prior to sharpening. Refer to Chain
Tension Section earlier in this manual. Do all
of your filing at the mid-point of the bar.
Use a 5/32 in. diameter round file and holder.
Keep the file level with the top plate of the tooth.
Do not let the file dip or rock.
Using light but firm pressure, stroke towards the
front corner of the tooth.
Lift file away from the steel on each return stroke.
Put 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.
WARNING:
Improper chain sharpening increases the poten-
tial of kickback.
WARNING:
Failure to replace or repair damaged chain can
cause serious injury.
WARNING:
The saw chain is very sharp, always wear pro-
tective gloves when performing maintenance
to the chain.
TOP PLATE FILING ANGLE
See Figure 38.
CORRECT 30° - File holders are marked with
guide marks to align file properly to produce
correct top plate angle.
LESS THAN 30° - For Cross Cutting.
MORE THAN 30° - Feathered Edge Dulls Quickly.
MAINTENANCE
CORRECT TOP PLATE
29 - English
LEFT HAND
CUTTERS
RIGHT HAND
CUTTERS
INCORRECT TOP PLATE FILING
FILING ANGLE
THAN 30°
30°
Fig. 36
Fig. 37
ANGLE
LESS
MORE
THAN 30°
Fig. 38
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