Maintenance - DeWalt DWD012S Quick Start Manual

1. Use sharp drill bits only. For WOOD, use twist
drill bits, spade bits, power auger bits, or hole
saws. For METAL, use steel twist drill bits or
hole saws.
2. Always apply pressure in a straight line with the
bit. Use enough pressure to keep drill biting, but
do not push hard enough to stall the motor or
deflect the bit.
3. Hold tool firmly with both hands to control the
twisting action of the drill.
4. IF DRILL STALLS, it is usually because
it is being overloaded or improperly used.
RELEASE TRIGGER IMMEDIATELY, remove
drill bit from work, and determine cause of
stalling. DO NOT CLICK TRIGGER ON
AND OFF IN AN ATTEMPT TO START A
STALLED DRILL — THIS CAN DAMAGE
THE DRILL.
5. To minimize stalling or breaking through the
material, reduce pressure on drill and ease the
bit through the last fractional part of the hole.
6. Keep the motor running when pulling the bit
back out of a drilled hole. This will help prevent
jamming.
7. With variable speed drills there is no need to
center punch the point to be drilled. Use a
slow speed to start the hole and accelerate by
squeezing the trigger harder when the hole is
deep enough to drill without the bit skipping
out.
DRILLING IN METAL
Start drilling with slow speed and increase to full
power while applying firm pressure on the tool.
A smooth even flow of metal chips indicates the
proper drilling rate. Use a cutting lubricant when
drilling metals. The exceptions are cast iron and
brass which should be drilled dry.
NOTE: Large (6 mm) holes in steel can be made
easier if a pilot hole (3 mm) is drilled first.
DRILLING IN WOOD
Start drilling with slow speed and increase to full
power while applying firm pressure on the tool.
Holes in wood can be made with the same twist
drills used for metal. These bits may overheat unless
pulled out frequently to clear chips from the flutes.
Work that is apt to splinter should be backed up
with a block of wood.
Keyless chuck (fig. 3, 4)
The DWD012S features a keyless chuck (d). To
insert a drill bit or other accessory, follow the steps
listed below.
1. Open the chuck by turning the sleeve (d)
counterclockwise and insert the bit shank.
2. Tighten firmly by turning the sleeve clockwise.
To release the bit, turn the chuck counterclockwise
in just one hole, then loosen the chuck by hand.
REMOVAL OF KEYLESS CHUCK (FIG. 3)
Tighten the chuck around the shorter end of a hex
key (not supplied) of 1/4" (6 mm) or greater size.
Using a soft hammer, strike the key sharply in the
counterclockwise direction when viewed from the
front of the tool. This will loosen the chuck so that it
can be removed by hand.
KEYLESS CHUCK INSTALLATION (FIG. 4)
Screw the chuck on by hand as far as it will go.
Insert the shorter end of a hex key (not supplied)
of 1/4" (6 mm) or greater size and strike it in the
clockwise direction with a soft hammer.

MAINTENANCE

Your D WALT power tool has been designed to
E
operate over a long period of time with a minimum
of maintenance. Continuous satisfactory operation
depends upon proper tool care and regular cleaning.
WARNING: To reduce the risk of
injury, turn unit off and disconnect
machine from power source before
installing and removing accessories,
before adjusting or changing set-ups
or when making repairs. Be sure the
trigger switch is in the OFF position. An
accidental start-up can cause injury.
E N G LISH
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