Ryobi RY10518 Operator's Manual - Page 30

Sharpening The Cutters, Warning, Caution

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MAINTENANCE SHARPENING THE CUTTERS See Figures 49 - 52. Be careful to file all cutters to the specified angles and to the same length, as fast cutting can only be obtained when all cutters are uniform. WARNING: The saw chain is very sharp. Always wear protective gloves when performing maintenance to the chain to prevent serious personal injury. n Tension the chain prior to sharpening. Refer to Adjusting The Chain Tension. n Use a 3/16 in. diameter round file and holder. Do all of your filing at the midpoint of the bar. n Keep the file level with the top plate of the tooth. Do not let the file dip or rock. n Using light but firm pressure. Stroke towards the front corner of the tooth. n Lift the file away from the steel on each return stroke. n 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. n Remove filings from the file with a wire brush. CAUTION: A dull or improperly sharpened chain can cause excessive engine speed during cutting, which may result in severe engine damage. TOP PLATE RIVET HOLE CUTTING CORNER SIDE PLATE DEPTH GAUGE HEEL GULLET TOE Fig. 49 Fig. 50 LEFT HAND CUTTERS Fig. 51 WARNING: Improper chain sharpening increases the potential of kickback. WARNING: Failure to replace or repair a damaged chain can cause serious injury. RIGHT HAND CUTTERS Fig. 52 Page 30 - English

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Page 30 — English
CUTTING
CORNER
SIDE PLATE
DEPTH GAUGE
TOE
GULLET
HEEL
RIVET HOLE
TOP PLATE
Fig. 49
Fig. 50
Fig. 51
LEFT HAND
CUTTERS
RIGHT HAND
CUTTERS
Fig. 52
MAINTENANCE
SHARPENING THE CUTTERS
See Figures 49 - 52.
Be careful to file all cutters to the specified angles
and to the same length, as fast cutting can only be
obtained when all cutters are uniform.
WARNING:
The saw chain is very sharp. Always wear pro-
tective gloves when performing maintenance to
the chain to prevent serious personal injury.
Tension the chain prior to sharpening. Refer to
Adjusting The Chain Tension
.
Use a 3/16 in. diameter round file and holder.
Do all of your filing at the midpoint of the bar.
Keep the file level with the top plate of the tooth.
Do not let the file dip or rock.
Using light but firm pressure. Stroke towards
the front corner of the tooth.
Lift the file away from the steel on each return
stroke.
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.
Remove filings from the file with a wire brush.
CAUTION:
A dull or improperly sharpened chain can cause
excessive engine speed during cutting, which
may result in severe engine damage.
WARNING:
Improper chain sharpening increases the poten-
tial of kickback.
WARNING:
Failure to replace or repair a damaged chain
can cause serious injury.