25
CARE AND MAINTENANCE
NOTICE: Inspect the drive sprocket for wear or
damage when replacing the chain. If signs of wear
or damage are present in the areas indicated, have
the drive sprocket replaced by qualied service
technician.
Sharpen the Cutters
Be sure to le all cutters (Fig. 13a) to the specied
angles and to the same length, as fast cutting can
be obtained only when all cutters are uniform.
a. Remove the battery pack. Wear gloves for
protection.
b. Properly tension the chain prior to sharpening.
Refer to the section: “Adjusting the Chain
Tension” earlier in this manual.
c. Use a 5/32ʺ (4.0 mm) diameter round le and
holder (available separately). Do all of your
ling at the middle position of the guide bar.
d. Keep the le level with the top plate of the
tooth. Do not let the le dip or rock.
e. Keep a correct sharpening angle of 30°
between the le and the saw chain
(see Fig. 13b & 13c). Always use a le holder
(available separately) when sharpening saw
chains by hand. File holders have markings for
the sharpening angle.
f. Using light but rm pressure, perform a stroke
towards the front corner of the tooth. Lift the le
away from the steel on each return stroke.
g. Make a few rm strokes on every tooth. File all
left hand cutters in one direction. Then move to
the other side and le the right-hand cutters in the opposite direction. Occasionally remove
lings from the le with a wire brush (Fig. 13d).
13a
Top plate
Side plate
Depth
gauge
13c
13d
Left hand
cutters
Right hand
cutters
13b
5/32" (4.0mm)
Round File
Filing
Direction
Cutter tooth
Sharpening
Angle: 30°
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