27
CARE AND MAINTENANCE
Side Plate Angle (Fig. 13f)
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
a. The depth gauge should be maintained at a
clearance of 0.025 in. (0.6 mm), as shown in
Fig. 13g. Use a depth gauge tool (available
separately) to check the depth gauge
clearances.
b. 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. 13h). Use a
0.025 in. (0.6 mm) depth-gauge jointer.
Depth-gauges must be adjusted with the flat file
in the same direction the adjoining cutter was filed
with the round file. Use care not to contact the
cutter face with the flat file when adjusting depth
gauges.
13g
0.025" (0.6 mm)
Depth gauge clearance
55°
13f
CORRECT INCORRECT
INCORRECT
Hook
Backward
Slope
Side plate angle
13h
Depth gauge jointer
Flat file
