Scotts LCS31440S Manual Del Operador página 9

NOTE: Inspect the drive sprocket for wear or damage when
replacing the chain. If signs of wear or damage are present in the
areas indicated, have the drive sprocket replaced. Call our
customer service help line at 1-800-618-7474 for assistance.
HOW TO SHARPEN THE CUTTERS
Be careful to file all cutters to the specified angles and to the same
length, as fast cutting can be obtained only when all cutters are
uniform.
Wear gloves for protection. Properly tension the chain prior to
sharpening. Refer to "Chain Tension Section" earlier in this manual.
Do all of your filing at the midpoint of the bar.
Use a 5/32 in. diameter round file and holder.
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. ( Fig. 12)
Lift 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. Occasionally remove filing from the file with a
wire brush. ( Fig. 13)
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.
CHAIN TENSION AND MAINTENANCE
Fig. 12
Fig. 13
Model LCS31440S
TOP PLATE FILING ANGLE ( Fig. 14)
Correct 30 degrees – File holders are marked with guide marks
to align file properly to produce top plate angle.
Less than 30 degrees – for cross cutting.
More than 30 degrees – feathered edge dulls quickly.
SIDE PLATE ANGLE (Fig.
15)
Correct – 80 degrees 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 a diameter too small, or
file held to 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 file held too high.
DEPTH GAUGE CLEARANCE (Fig.16,17,18)
The depth gauge should be maintained 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. Depth gauge jointers
are available in .020 in. to .035 in.
(0.5 mm to 0.9 mm). Use a .025 in.
(0.6 mm) 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.
9
Fig.14
Fig. 15
Fig. 16
Fig. 17
Fig. 18