MasterCraft 054-0370-0, Instruction Manual

Page: 20 / 28

headline bars
continuation tabs
notes
warnings
headline bars
continuation tabs
notes
warnings
headline bars
continuation tabs
notes
warnings
20
model no. 054-0370-0 | contact us 1-800-689-9928
TOP-PLATE SHARPENING ANGLES
(
fig. 10e)
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. 10f )
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 diam-
eter 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
( fig. 10g−fig. 10h)
1. The depth gauge should be maintained at a
clearance of 1/32” (0.6 mm), as shown in fig. 10g .
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. 10h)
. Use a 1/32” (0.6 mm) depth-gauge jointer.
Depth gauges must be adjusted with the flat file in
the same direction that 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.
MAINTENANCE
30°
fig. 10e
Correct
Top-plate sharpening angles
Less than 30° More than 30°
Incorrect Incorrect
fig. 10f
55°
Correct Incorrect Incorrect
Side-plate angle
Hook Backward Slope
fig. 10g
Depth-gauge clearance
1/32’’ (0.6 mm)
fig. 10h
Depth-gauge jointer
Flat file