DeWalt DC727 Instruction Manual page 10

NOTE: When using the Drill/Driver for drilling holes, be sure that the
Torque Adjusting Collar is set so the figure of the drill is aligned with
the center line on the top of the tool. Failure to do this will allow the
clutch to slip while attempting to drill
Dual Range Gearing (Fig. 5)
The dual range feature of your Driver/Drill allows you
to shift gears for greater versatility.
To select the low speed, high torque setting, turn the
tool off and permit to stop. Slide the gear shifter for-
ward (towards the chuck) as shown in Figure 5. To
select the high speed, low torque setting, turn the tool
off and permit to stop. Slide the gear shifter back
(away from chuck).
NOTE Do not change gears when the tool is running.
If you are having trouble changing gears, make sure
that the dual range gear shifter is either completely
pushed forward or completely pushed back.
Keyless Single Sleeve Chuck
Your tool features a keyless chuck with one rotating sleeve for one-
handed operation of the chuck. To insert a drill bit or other accessory,
follow these steps.
1. Lock the trigger in the OFF position as previously described.
2. Grasp the black sleeve of the chuck with one hand and use the
other hand to secure the tool. Rotate the sleeve counterclock-
wise far enough to accept the desired accessory.
3. Insert the accessory about 3/4" (19 mm) into the chuck and tight-
en 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.
WARNING: Do not attempt to tighten drill bits (or any other acces-
sory) 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
trigger 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.
Operation as a Drill
Turn the collar to the drill bit symbol. Install and tighten the desired drill
FIG. 5
bit in the chuck. Select the desired speed/torque range using the dual
range gear shifter to match the speed and torque to the planned oper-
ation. 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,
B
cinder block, etc., use carbide-tipped bits.
2. 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.
3. 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.
4. Hold the drill firmly with one hand on the grip and the other hand
on the bottom of the battery pack to control its twisting action.
5. 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.
6. To minimize stalling upon breaking through the material, reduce
pressure on drill and ease the bit through the last fractional part of
the hole.
7. Keep the motor running when pulling the bit back out of a drilled
hole. This will help prevent jamming.
8