Ryobi CS1800 Operator's Manual page 27

5. Put a few firm strokes on every tooth. File all left
hand cutters in one direction. Then move to the
other side and file the right hand cutters in the
opposite direction. Occasionally remove filings from
the file with a wire brush.
WARNING:
Improper chain sharpening increases the
potential of kickback.
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.
TOP PLATE FILING ANGLE
See Figure 36.
■ 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 37.
■ CORRECT- 80
o Produced automatically if correct
diameter 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 38.
1. The depth gauge should be maintained at a clear-
ance of .025 in. (0.6 mm). Use a depth gauge tool for
checking the depth gauge clearances.
2. Every time the chain is filed, check the depth gauge
clearance.
MAINTENANCE
CORRECT TOP PLATE
FILING ANGLE
CORRECT SIDE
PLATE FILING
ANGLE
27
LEFT HAND
CUTTERS
RIGHT HAND
CUTTERS
INCORRECT TOP PLATE
FILING ANGLE
LESS
°
THAN 30
30 °
INCORRECT SIDE PLATE
FILING ANGLE
HOOK
°
80
RAKER CLEARANCE
.025 in. (0.6 mm)
Fig. 35
MORE
°
THAN 30
Fig. 36
BACKWARD
SLOPE
Fig. 37
Fig. 38