Skil CS4555-00 Manual Del Propietário página 30

7. Make 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 (Fig. 33).
WARNING
cause excessive motor speed during
cutting, which may result in severe motor
damage .
WARNING
potential of kickback .
WARNING
can cause serious injury .
Top-Plate Sharpening Angles (Fig . 34)
CORRECT 30°- This optimal angle can be
•
obtained only when the specified files and
proper setting are used. File holders are
marked with guide marks to align the file
properly to produce the correct top plate
angle.
LESS THAN 30°- The tooth is too dull for
•
cutting.
MORE THAN 30°- The edge of the cutting
•
tooth is feathered and dulls quickly.
Side-Plate Angle (Fig . 35)
CORRECT 55°- The optimal angle can be
•
produced automatically if the correct diameter
file is used in the file holder.
HOOK- "Grabs" and dulls quickly. Increases
•
potential of KICKBACK. Results from using a
file with a diameter that is too small, or a file
held too low.
BACKWARD SLOPE- Needs too much feed
•
pressure, causes excessive wear to bar
and chain. Results from using a file with a
diameter too large, or a file held too high.
Depth-Gauge Clearance
1. The depth gauge should be maintained at a clearance of 0.025 in. (0.6 mm), as shown
in Fig. 36. Use a depth-gauge tool (available separately) to check the depth-gauge
clearances.
2. Check the depth-gauge clearance every time the chain is filed.
Use a flat file and a depth-gauge jointer (both available separately) to lower all gauges
uniformly (Fig. 37). Depth-gauge jointers are available in 0.020 in. to 0. 035 in.
(0.5 mm to 0.9 mm). Use a 0.025 in. (0.6 mm) depth-gauge jointer.
30
A dull or improperly
sharpened chain can
Improper chain
sharpening increases the
Failure to replace or
repair a damaged chain
Fig. 33
Left Hand
Cutters
Top Plate Sharpening Angles
Fig.34
Less
Than 30°
30°
Correct Incorrect
Side Plate Angle
Fig.35
Hook
80°
Correct Incorrect
Right Hand
Cutters
More
Than 30°
Incorrect
Backward
Slope
Incorrect