Ryobi P4360 Manuel D'utilisation page 84

WARNING:
Improper chain sharpening increases the poten-
tial of kickback.
WARNING:
Failure to replace or repair damaged chain can
cause serious injury.
WARNING:
The saw chain is very sharp, always wear pro-
tective gloves when performing maintenance
to the chain to prevent serious personal injury.
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° Produced automatically if cor-
rect 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 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 clearance.
Use a flat file and a depth gauge jointer to lower
all gauges uniformly. Depth gauge jointers are
MAINTENANCE
CORRECT TOP PLATE
CORRECT SIDE
PLATE FILING
DEPTH GAUGE JOINTER
28 - English
INCORRECT TOP PLATE FILING
FILING ANGLE
THAN 30°
30°
INCORRECT SIDE PLATE
ANGLE
HOOK
80°
RAKER CLEARANCE
.025 in.
ANGLE
LESS
MORE
THAN 30°
Fig. 35
FILING ANGLE
BACKWARD
SLOPE
Fig. 36
Fig. 37
FLAT FILE
Fig. 38
RESTORE ORIGINAL
SHAPE BY ROUNDING
THE FRONT
Fig. 39