23
WARNING:
Improper chain sharpening increases the potential of
kickback.
TOP PLATE FILING ANGLE
See Figure 35.
CORRECT 30° - File holders are marked with guide marks
to align file properly to produce correct top plate angle.
LESS THAN 30° - For Cross Cutting.
MORE THAN 30° - Feathered Edge Dulls Quickly.
SIDE PLATE ANGLE
See Figure 36.
CORRECT - 80
o
Produced automatically if correct diam-
eter file is used in file holder.
HOOK - “Grabs” and dulls quickly. Increases potential
of KICKBACK.
Results from using a file with diameter too small, or file
held too low.
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 37 - 39.
The depth gauge should be maintained at a clearance of
.025 in. Use a depth gauge tool for checking the depth
gauge clearances.
Every time the chain is filed, check the depth gauge clear-
ance.
INCORRECT TOp pLATE fILING
ANGLE
MORE
ThAN 30°
LEss
ThAN 30°
Fig. 35
30°
CORRECT TOp pLATE
fILING ANGLE
INCORRECT sIDE pLATE
fILING ANGLE
BACKwARD
sLOpE
hOOK
Fig. 36
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.
Fig. 37
MAINTENANCE
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