Scotts S20505 Operator's Manual page 17

HOW TO SHARPEN THE CUTTERS
See Figures 18 - 21.
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.
 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.
 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.
NOTICE:
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 poten-
tial of kickback. Failure to replace or repair dam-
aged chain can cause serious injury.
MAINTENANCE
TOP
PLATE
RIVET HOLE
RIGHT HAND
17 — English
PARTS OF A CUTTER
HEEL
GULLET
LEFT HAND
CUTTERS
CUTTERS
CUTTING
CORNER
SIDE PLATE
DEPTH GAUGE
TOE
Fig. 18
Fig. 19
Fig. 20
Fig. 21