DeWalt DCH133NT - Page 13

ENGLISH
11
Mechanical Clutch
With a mechanical clutch the indication that the clutch
has activated will be an audible ratcheting together with
increasedvibration.

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.
Operation Modes (Fig.F)

WARNING: Do not select the operating mode when the
tool isrunning.

CAUTION: Never use in Rotary Drilling or Rotary
Hammering mode with a chisel bit in the bit holder.
Personal injury and damage to the the tool may result.
Your tool is equipped with a mode selector dial 
6
to selectthe
mode appropriate to desired operation.
Symbol Mode Application
Rotary Drilling
Screwdriving
Drilling into steel, wood
andplastics
Rotary Hammering
Drilling into concrete
andmasonry
Hammering only Lightchipping
To select an operating mode:
1. Depress the mode selector release button
7
.
2. Rotate the mode selector dial so that the arrow points to the
symbol corresponding for the desired mode.
NOTE: The arrow on the mode selector dial
6
must be pointing
at a mode symbol at all times. There are no operable positions
inbetween. It may be necessary to briefly run the motor after
having changed from 'hammering only' to 'rotary' modes in
order to align thegears.
Performing an Application (Fig.A, G)

WARNING: TO REDUCE THE RISK OF PERSONAL
INJURY, ALWAYS ensure workpiece is anchored or
clamped firmly. If drilling thin material, use a wood “back-
up” block to prevent damage to thematerial.

WARNING: Always wait until the motor has come to
a complete standstill before changing the direction
ofrotation.
1. Choose and install the appropriate chuck, adapter, and/or
bit onto to the tool. Refer to Bit and Bit Holder.
2. Using the mode selector dial
6
, selectthe mode
appropriate to desired application. Refer to
OperationModes.
3. Adjust the side handle
3
asnecessary.
4. Select the direction ofrotation using the forward/reverse
button
4
. When changing the position of the control
button, be sure the trigger isreleased.
- To select forward rotation, press the for ward/re verse
control button on the right side of thetool.
- To select reverse, press 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.
5. Place the bit/chisel on the desired location.
6. Depress the trigger switch
5
. The farther you depress
the trigger switch, the faster the tool will operate. For
maximum tool life, use variable speed only for starting holes
orfasteners.
7. To stop the hammer, release the switch.
Recommendations for Tool Operation
• Large (7.9 mm to 12.7 mm) holes in steel can be made
easier if a pilot hole (4 mm to 4.8 mm) is drilledfirst.
• 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. A smooth even flow of material indicates the
proper drilling rate.
• If drilling thin material or material that is prone to splinter,
use a wood “back-up” block to prevent damage to
theworkpiece.

WARNING:
• Do not use this tool to mix or pump easily combustible
or explosive fluids (benzine, alcohol,etc.).
• Do not mix or stir inflammable liquids
labelledaccordingly.
MAINTENANCE
Your DeWALT power tool has been designed to 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 serious personal
injury, turn tool off and disconnect battery pack
before making any adjustments or removing/
installing attachments or accessories. An accidental
start-up can causeinjury.
The charger and battery pack are notserviceable.