DeWalt DCD7781 - Page 29

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ENGLISH
set a torque range for screwdriving. The higher the number
on the collar, the higher the torque and the larger the
fastener which can bedriven.
1. Turn the mode selection collar
5
to the desiredposition.
Refer to Mode Selection.
2. Pull the trigger switch applying pressure in a straight line
with the bit until the fastener is seated at the desired
depth in theworkpiece.
Recommendations for Screwdriving
• Start with lower torque settings, then advance to higher
torque settings to avoid damage to the workpiece
orfastener.
• Make some practice runs in scrap or on unseen areas of
the workpiece to determine the proper position of the
mode selectioncollar.
Drilling
1. Turn the mode selection collar
5
to the drillsymbol.
Refer to ModeSelection.
2. Place drill bit in contact with theworkpiece.
NOTE: Use sharp drill bitonly.
3. Pull the trigger switch applying pressure in a straight line
with the bit until it reaches the desireddepth.

WARNING: Drill may stall if overloaded causing a
sudden twist. Always expect the stall. Grip the drill
firmly to control the twisting action and avoidinjury.
4. Keep the motor running when pulling the bit back out of
a drilled hole to preventjamming.
Recommendations for Drilling
• When drilling, always apply pressure in a straight line
with the bit, but do not push hard enough to stall the
motor or deflect thebit.
• IF THE DRILL STALLS:
 RELEASE TRIGGER SWITCH IMMEDIATELY,
remove drill bit from work, and determine cause
ofstalling.
- DO NOT DEPRESS TRIGGER SWITCH ON AND OFF
IN AN ATTEMPT TO START A STALLED DRILL—
THIS CAN DAMAGE THEDRILL.
- To minimize stalling or breaking through the
material, reduce pressure on drill and ease the bit
through the last fractional part of thehole.
• Large holes (5/16" to 1/2" [7.9 mm to 12.7 mm]) in steel
can be made easier if a pilot hole (5/32" to 3/16" [4 mm
to 4.8 mm]) is drilledfirst.
• If drilling thin material or material that is prone to splinter,
use a wood “back-up” block to prevent damage to
theworkpiece.
Hammerdrilling DCD7781
IMPORTANT: Use carbide-tipped or masonry bits rated for
percussion drillingonly.
1. Select the desired speed/torque range using the speed
selector
6
to match the speed and torque to the
planned operation. Turn the mode selection collar
5
to
the hammerdrillsymbol.
Performing an Application (Fig.A)

WARNING: To reduce the risk of personal
injury, ALWAYS ensure workpiece is anchored or
clampedfirmly.

WARNING: Always wait until the motor has come to
a complete standstill before changing the direction
ofrotation.
Prior to Performing Work
• Set the speed selector
6
. Refer to SpeedSelection.
• Install the appropriate bit or accessory into the
chuck. Refer to Installing a Bit or Accessory into a
KeylessChuck.

WARNING:
• Do not use this tool to mix or pump easily
combustible or explosive fluids (benzine,
alcohol,etc.).
• Do not mix or stir flammable liquids
labeledaccordingly.
Screwdriving
Your tool has a clutch with adjustable torque for driving
and removing a wide array of fastener shapes and sizes. The
numbers 1–15 on the mode selection collar
5
are used to
Worklight (Fig.A)
The worklight
7
is activated when the trigger switch is
depressed, and will automatically turn off 20 seconds after
the trigger switch is released. If the trigger switch remains
depressed, the worklight will remainon.
NOTE: The worklight is for lighting the immediate work
surface and is not intended to be used as aflashlight.
Variable Speed Trigger and Forward/
Reverse Control Button (Fig. A)
The tool is turned on and off by pulling and releasing the
variable speed trigger
3
. The farther the trigger is depressed,
the higher the speed of the tool. Your tool is equipped with
a brake. The chuck will stop as soon as the trigger switch is
fullyreleased.
A forward/reverse control button
4
determines the
rotational direction of the tool and also serves as a
lock-offbutton.
• To select forward rotation (clockwise), release the trigger
and depress the forward/reverse control button on the
right side of thetool.
• To select reverse (counterclockwise), depress the
forward/reverse control button on the left side of
thetool.
NOTE: The center position of the control button locks the
tool in the off position. When changing the position of the
control button, be sure the trigger isreleased.
NOTE: Continuous use in variable speed range is not
recommended. It may damage the switch and should
beavoided.
NOTE: The first time the tool is run after changing the
direction of rotation, you may hear a click on start up. This is
normal and does not indicate aproblem.