MAINTENANCE AND REPAIR INSTRUCTIONS
CHAIN MAINTENANCE
For smooth and fast cutting, the chain needs to be maintained properly. The
following conditions indicate that the chain requires sharpening:
• Wood chips are small and powdery.
• The chain must be forced through the wood during cutting.
• The chain cuts to one side.
During maintenance of the chain, consider the following:
• The depth gauge (or raker clearance) setting determines the height at which the
cutter enters the wood and the size of the wood chip that is removed (Fig. 33).
Too much clearance increases the potential for kickback. Too little clearance
decreases the size of the wood chip, thus decreasing the chain's cutting ability.
• If the cutter teeth have hit hard objects, such as nails and stones, or were
abraded by mud or sand on the wood, have a service dealer sharpen the chain.
NOTE: Inspect the drive sprocket for wear or damage when replacing the chain. If
signs of wear or damage are present, do not use the unit.
NOTE: If you do not fully understand the correct procedure for sharpening the
cutters after reading the instructions that follow, have the saw chain
sharpened by an authorized service center or replace the chain with a
recommended low-kickback chain.
SHARPENING THE CUTTERS
WARNING:
A dull or improperly sharpened chain can
cause excessive motor speed during cutting, which may result
in severe motor damage.
WARNING:
Improper chain sharpening increases the
potential of kickback. Failure to replace or repair a damaged
chain can cause serious injury.
Be careful to file all cutters to the specified angles and to the same length. Fast
cutting can be obtained only when all cutters are uniform.
• Tighten the chain tension enough so that the chain does not wobble. Do all of
the filing at the midpoint of the guide bar. Wear gloves for protection.
• Use a round file and holder.
• Keep the file level with the top plate of the tooth (Fig. 34). Do not let the file
dip or rock (Fig. 35).
• Using light but firm pressure, stroke towards the front corner of the tooth (Fig. 20).
Lift the file away from the cutter before returning the file to the beginning of the
sharpening stroke.
• Put a few firm strokes on every tooth. File all left hand cutters in one direction
(Fig. 36). Then move to the other side and file the right hand cutters in the
opposite direction (Fig. 36). Occasionally remove filings from the file with a
wire brush.
Top Plate Filing Angle
• CORRECT (30°) – File holders are marked with guide marks to align the file
properly and produce the correct top plate angle (Fig. 37).
• INCORRECT (LESS THAN 30°) – For cross cutting (Fig. 38).
• INCORRECT (MORE THAN 30°) – This creates a feathered edge that dulls quickly.
Side Plate Filing Angle
• CORRECT (80°) – This is produced automatically if the correct diameter file is
used in the file holder (Fig. 37).
• INCORRECT (HOOK) – This causes the chain to "grab" and dull quickly,
increasing the potential for kickback. A hook is caused by using a file with too
small a diameter or a file held too low (Fig. 38).
• INCORRECT (BACKWARD SLOPE) – This causes a need for too much feed
pressure, producing excessive wear to the bar and chain. A backward slope
is caused by using a file with too large a diameter or a file held too high.
MAINTAINING DEPTH GAUGE CLEARANCE
• Maintain the depth gauge at a clearance of 1/32" (0.6 mm). Use a depth
gauge tool for checking the depth gauge clearances. (Fig. 33)
• 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 (Fig. 39).
Use a 1/32 inch (0.6 mm) depth gauge jointer. After lowering each depth
gauge, restore the original shape by rounding the front (Fig. 40). 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 the cutter face with the flat file when adjusting depth
gauges.
MAINTAINING THE GUIDE BAR
After every week of use, rotate the guide bar on the saw to distribute the wear for
maximum guide bar life (Fig. 41). Frequently check the guide bar for damage.
Feathering and burring of the guide bar rails (the ridges on either side of the bar
groove) is a normal process of guide bar wear. Such faults should be smoothed
with a file as soon as they occur.
A guide bar with the following faults should be replaced:
• Wear inside the guide bar rails that permits the chain to lay sideways.
• Bent guide bar.
• Cracked or broken rails.
• Spread rails.
Raker Clearance
1/32" (0.6 mm)
Cutting Corner
Side Plate
Top Plate
Depth
Gauge
Gullet
Fig. 33
Filing Height
Fig. 34
Filing Angle
Fig. 35
Left Hand
Cutters
Right Hand
Cutters
Fig. 36
Correct
30˚
Filing Angles
Top Plate
80˚
Side Plate
Fig. 37
Incorrect
Less than 30˚
More than 30˚
Filing Angles
Top Plate
Hook
Backward Slope
Side Plate
Fig. 38
Depth Gauge Jointer
Flat File
Fig. 39
Restore Original
Shape by Rounding
the Front
Fig. 40
Fig. 41
CLEANING AND STORAGE
WARNING:
Do not let brake fluids, gasoline, petroleum-based products, penetrating oils, etc., come in contact with plastic
parts. These chemicals may damage, weaken and destroy plastic, which may result in serious personal injury.
CLEANING INSTRUCTIONS
NOTE: It is normal for oil to seep from the unit when it is not in use. Please take this into consideration when storing the unit.
• Remove the battery from the unit.
• Slacken the chain if it was retensioned at operating temperature during cutting work. The chain contracts as it cools down. If it is not
slackened, it may damage the gearbox and bearings.
• Wipe the unit down with a damp cloth. Do not douse the unit with water. Do not use solvents or strong detergents. If preparing the unit
for long-term storage (three months or more), remove the chain and guide bar, then clean the unit thoroughly with a damp cloth. A firm-
bristled, non-wire, brush can be used to remove debris from the bar groove and assembly. When finished, reassemble the unit. Refer to
Removing/Replacing the Guide Bar and Chain.
• Spray the guide bar and chain with corrosion inhibiting oil.
STORAGE INSTRUCTIONS
• Follow the Cleaning Instructions listed above.
• Attach the scabbard to the guide bar and chain.
• Store the unit in a dry, high and/or locked location, out of the reach of children and other unauthorized persons.
TROUBLESHOOTING
CAUSE
THE MOTOR OPERATES SLOWLY OR WILL NOT OPERATE
The battery lacks sufficient charge
THE BAR AND CHAIN ARE RUNNING HOT AND SMOKING OR STUCK
The chain tension is too tight
The bar lube reservoir is empty
THE CHAIN DOES NOT ROTATE WHILE THE MOTOR IS RUNNING
The chain tension is too tight
The guide bar and chain are assembled incorrectly
The guide bar and chain are damaged
The drive assembly is damaged
THE CHAIN ROTATES, BUT DOES NOT CUT
The chain is dull
The chain is on backwards
NOTE: For maintenance beyond the minor adjustments listed above, or for replacement parts, please call the Customer Support
Department at 1-877-282-8684 (U.S.) or 1-800-668-1238 (Canada).
SPECIFICATIONS*
Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Cordless, Battery-powered
Motor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 V
Motor Speed. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2100 rpm
Bar Length . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 inches (25.4 cm)
Chain Pitch. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3/8 inch (9.5 mm)
Chain Gauge. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.043 inch (1.1 mm)
Chain Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-inch Chain
Guide Bar Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-inch Bar
Chain speed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12.86 ft./s (3.92 m/s)
Bar Lube Reservoir Capacity. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 oz (148 ml)
Weight (with Battery) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 lb 9 oz (4.3 kg)
*
All specifications are based on the latest product information available at the time of printing. We reserve the right to make changes at
any time without notice.
ACCESSORIES (SOLD SEPARATELY)
Model #
Part #
Description
A59 LBTY . . . . . . . . . . . . .
753-06579 . . . . . . .
20V Lithium-ion Battery
A59LCHGR . . . . . . . . . . . .
753-06580 . . . . . . .
20V Lithium-ion Battery Charger
REPLACEMENT PARTS
Part #
753-06629 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
753-06631 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SOLUTION
Charge the battery
Adjust the chain tension
Refill the bar lube reservoir
Adjust the chain tension
Refer to Removing/Replacing the Guide Bar and Chain
Inspect the guide bar and chain for damage
Refer to Service Information
Sharpen the chain
Reverse the direction of the chain
Description
10-inch Chain
10-inch Bar
5