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Page 26
MAINTENANCE
SHARPENING THE CUTTERS
See Figures 49 - 52.
Be careful to file all cutters to the specified angles and to
the same length, as fast cutting can only be obtained when
all cutters are uniform.
WARNING:
The saw chain is very sharp. Always wear protective
gloves when performing maintenance to the chain to
prevent serious personal injury.
Tension the chain prior to sharpening. Refer to Adjusting
The Chain Tension.
Use a 5/32 in. diameter round file and holder. Do all of
your filing at the midpoint of the bar.
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 the 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.
Remove filings from the file with a wire brush.
CAUTION:
A dull or improperly sharpened chain can cause exces-
sive engine speed during cutting, which may result in
severe engine damage.
WARNING:
Improper chain sharpening increases the potential of
kickback.
WARNING:
Failure to replace or repair a damaged chain can cause
serious injury.
CUTTING
CORNER
SIDE PLATE
DEPTH GAUGE
TOE
GULLET
HEEL
RIVET HOLE
TOP PLATE
Fig. 49
Fig. 50
Fig. 51
LEFT HAND
CUTTERS
RIGHT HAND
CUTTERS
Fig. 52