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WARNING:
Improper chain sharpening increases the potential of
kickback.
TOP PLATE FILING ANGLE
See Figure 36.
n CORRECT 30° - File holders are marked with guide marks
to align file properly to produce correct top plate angle.
n LESS THAN 30° - For Cross Cutting.
n MORE THAN 30° - Feathered Edge Dulls Quickly.
SIDE PLATE ANGLE
See Figure 37.
n CORRECT - 80
o
Produced automatically if correct diam-
eter file is used in file holder.
n HOOK - “Grabs” and dulls quickly. Increases potential
of KICKBACK.
Results from using a file with diameter too small, or file
held too low.
n BACKWARD SLOPE - Needs too much feed pressure,
causes excessive wear to bar and chain.
Results from using a file with diameter too large, or file
held too high.
DEPTH GAUGE CLEARANCE
See Figure 38.
n The depth gauge should be maintained at a clearance of
.025 in. (0.6 mm). Use a depth gauge tool for checking
the depth gauge clearances.
n Every time the chain is filed, check the depth gauge clear-
ance.
INCORRECT TOP PLATE FILING
ANGLE
MORE
THAN 30°
LESS
THAN 30°
Fig. 36
30°
CORRECT TOP PLATE
FILING ANGLE
INCORRECT SIDE PLATE
FILING ANGLE
BACKWARD
SLOPE
HOOK
Fig. 37
80°
CORRECT SIDE
PLATE FILING
ANGLE
WARNING:
Failure to replace or repair damaged chain can cause
serious injury.
WARNING:
The saw chain is very sharp, always wear protective gloves
when performing maintenance to the chain.
RAKER CLEARANCE
.025 in. (0.6 mm)
Fig. 38
MAINTENANCE