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16
MAINTENANCE
CUTTING CORNER
SIDE PLATE
DEPTH GAUGE
TOE
GULLET
HEEL
RIVET HOLE
TOP PLATE
PARTS OF A CUTTER
Fig. 24
HOW TO SHARPEN THE CUTTERS
See Figures 24 - 27.
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.
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. Oc-
casionally remove filings from the file with a wire brush.
Fig. 25
Fig. 26
Tighten the chain tension enough that the chain does not
wobble. Do all of your filing at the mid-point of the bar.
Wear gloves for protection.
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.
LEFT HAND
CUTTERS
RIGHT HAND
CUTTERS
Fig. 27
CAUTION:
Dull or improperly sharpened chain can cause excessive
engine speed during cutting which may result in severe
engine damage.
WARNING:
Improper chain sharpening increases the potential of
kickback. Failure to replace or repair damaged chain can
cause serious injury.
CLEANING THE EXHAUST PORT AND
MUFFLER
Depending on the type of fuel used, the type and amount of
oil used, and/or your operating conditions, the exhaust port
and muffler may become blocked with carbon deposits. If
you notice a power loss with your gas powered tool, a quali-
fied service technician will need to remove these deposits
to restore performance.
SPARK ARRESTOR
The spark arrestor must be cleaned or replaced every 25 hours
or yearly to ensure proper performance of your product. For
the location of the spark arrestor and specific cleaning in-
structions, contact your nearest authorized service center.