Homelite UT10570 Operator's Manual page 28

TOP PLATE FILING ANGLE
See Figure 62.
■ 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 63.
■ CORRECT 80
o – Produced automatically if you use the
correct diameter file in the file holder.
■ HOOK – "Grabs" and dulls quickly, increases the
potential of KICKBACK.
Results from using a file with a diameter too small or a
file held too low.
■ BACKWARD SLOPE – Needs too much feed pressure,
causes excessive wear to the bar and chain.
Results from using a file with a diameter too large or file
held too high.
TOP PLATE FILING ANGLE
CORRECT
LESS THAN 30°
MAINTENANCE
30°
MORE THAN 30°
INCORRECT
Fig. 62
SIDE PLATE FILING ANGLE
HOOK
MAINTAINING DEPTH GAUGE CLEARANCE
See Figure 64, 65, and 66.
■ Maintain the depth gauge at a clearance of .025 in.
(0.6 mm). Use a depth gauge tool for checking the
depth gauge clearances.
■ Every time the chain is filed, check the depth gauge
clearance.
■ Use a flat file and a depth gauge jointer to lower all
gauges uniformly. Use a .025 in. (0.6mm) depth gauge
jointer. After lowering each depth gauge, restore original
shape by rounding the front. Be careful not to damage
adjoining drive links with the edge of the file.
■ 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 cutter face with flat
file when adjusting depth gauges.
DEPTH GAUGE JOINTER
Page 28
80°
CORRECT
BACKWARD SLOPE
INCORRECT
DEPTH GAUGE
.025 in.
(0.6 mm)
FLAT FILE
Fig. 63
Fig. 64
Fig. 65