DeWalt DCD778L1 - Performing an Application; Installing and Removing the Battery Pack; Proper Hand Position; Variable Speed Trigger and Forward;Reverse Control

9
ENGLISH
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
• Install the appropriate bit or accessory into the chuck.
Refer to accessory installation instructions in thismanual.

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
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 selector
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.
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.
Proper Hand Position (Fig.F)

WARNING: To reduce the risk of serious personal
injury, ALWAYS use proper hand position as shown.

WARNING: To reduce the risk of serious personal
injury, ALWAYS hold securely in anticipation of a
suddenreaction.
Proper hand position requires one hand on the main
handle
12
and the other hand holding the battery pack
1
.
Installing and Removing the Battery Pack
(Fig.E)
NOTE: For best results, make sure your battery pack is
fullycharged.
To install the battery pack
1
into the tool handle, align the
battery pack with the rails inside the tool’s handle and slide
it into the handle until the battery pack is firmly seated in the
tool and ensure that it does notdisengage.
To remove the battery pack from the tool, press the release
button
2
and firmly pull the battery pack out of the tool
handle. Insert it into the charger as described in the charger
section of thismanual.