- 07 -
Lift le away from the steel on each return stroke.
Put 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 di-
rection. Occasionally remove ling from the le 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 protec-
tive gloves when performing maintenance to the
chain.
Top Plate Filing Angle
Correct 30 degrees-File holders are marked with
guide marks to align le properly to produce top
plate angle.
Less than 30 degrees -for cross cutting.
More than 30 degrees -feathered edge dulls quickly.
Side Plate Angle
Correct-80 degrees produced automatically if correct
diameter le is used in le holder.
Hook - “Grabs” and dulls quickly. Increases potential
of kickback.
Results from using a le with a diameter too small,
or le held too low.
Backward Slope - Needs too much feed pressure,
causes excessive wear to bar and chain. Results
from using a le with a diameter too large, or le held
too high.
Depth Gauge Clearance
The depth gauge should be maintained at a clear-
ance of .025 in.(0.6 mm). Use a depth gauge tool for
checking the depth gauge clearances.
Every time the chain is led, check the depth gauge
clearance.
Use a at le and a depth gauge joint- er to lower all
gauges uniformly. Depth gauge jointers are available
in .020 in. to .035 in.(0.5 mm to 0.9 mm). Use a .025
in.(0.6 mm) depth gauge joint- er. After lowering each
depth gauge, restore original shape by rounding the
front. Be careful not to damage adjoining drive links
with the edge of the le.
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