DeWalt DW988 - Accessory and Operation Details; Side Handle Usage; Quick Release Chuck DW978; Operation as a Drill

other hand to secure the tool as shown in Figure 4. Rotate the
sleeve counterclockwise far enough to accept the desired
accessory.
3. Insert the accessory about 3/4" into the chuck and tighten securely
by rotating the chuck sleeve clockwise with one hand while holding
the tool with the other. Your tool is equipped with an automatic
spindle lock mechanism. This allows you to open and close the
chuck with one hand.
To release the accessory, repeat step 2 above.
A\WARNING: Do not attempt to tighten drill bits (or any other
accessory) by gripping the front part of the chuck
and turning the tool on. Damage to the chuck and
personal injury may result. Always lock off trigge
switch when changing accessories.
Be sure to tighten chuck with one hand on the
chuck sleeve and one hand holding the tool for
maximum tightness.
Side Handle
A\ CAUTION: Always use side handle and hold
drill with both hands. It clamps to the front of the
gear case as shown and can be rotated 360° to
permit right or left hand use.
Quick Release Chuck
DW978 (Fig. 5)
NOTE: The chuck accepts 1/4" (6.35 mm)
hex accessories only.
To install an accessory, pull the chuck collar
away from the front of the tool, insert the
accessory, and release the collar. The
accessory is locked in place. é
FIG. 5
To remove an accessory, pull the chuck collar away from the front of
the tool. Remove the accessory and release the collar.
Operation as a Drill
Turn the collar to the drill bit symbol. Install and tighten the desired drill
bit in the chuck. Select the desired speed/torque range using the gear
shifter to match the speed and torque to the planned operation. Follow
these instructions for best results when drilling.
DRILLING
1.
Use sharp drill bits only. For WOOD, use twist drill bits, spade bits,
power auger bits, or hole saws. For METAL, use high speed steel
twist drill bits or hole saws. For MASONRY, such as brick, cement,
cinder block, etc., use carbide-tipped bits.
. Be sure the material to be drilled is anchored or clamped firmly. If
drilling thin material, use a “back-up” block to prevent damage to the
material.
. Always apply pressure in a straight line with the bit. Use enough
pressure to keep the drill bit biting, but do not push hard enough to
stall the motor or deflect the bit.
Hold tool firmly to control the twisting action of the drill.
. IF DRILL STALLS, it is usually because it is being overloaded.
RELEASE TRIGGER IMMEDIATELY, remove drill bit from work,
and determine cause of stalling. DO NOT CLICK TRIGGER OFF
AND ON IN AN ATTEMPT TO START A STALLED DRILL — THIS
CAN DAMAGE THE DRILL.
. To minimize stalling as you are breaking through the material,
reduce pressure on drill and ease the bit through the last fractional
part of the hole.
. Keep the motor running when pulling the bit back out of a drilled
hole. This will help prevent jamming.
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