DeWalt D25733 Instruction Manual page 26

ENGlIsh
E-Clutch® and Service Indicator LEDs (Fig. A)
Your rotary hammer has two LEDs
E-Clutch® (ADC) function and a service indicator. Refer to
the table for more information on LED functionality.
lED Function Description
Red lock-on/service
(flashing)
The red indicator LED
up if the lock-on button
in any mode except the chipping
mode or if there is a fault with
the tool or the brushes have
completely worn out
Red E-Clutch®
(permanently on)
E-Clutch® is engaged.
Yellow Brush service
(permanently on)
The yellow brushwear indicator
LED 10
carbon brushes are nearly worn
out, indicating that the tool needs
servicing within the next 8 hours
of use.
Operation Modes (Fig. E)

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
select the mode appropriate to desired operation.
symbol Mode
Rotary
hammering
hammering
only
Bit adjustment
To select an operating mode
1. Rotate the mode selector dial
arrow points to the symbol corresponding for the
desired mode.
Fig. E
4
24
, indicating the
10
lights
10
is used
8
lights up when the
to
4
application
Drilling into concrete
and masonry
Light chipping
Chisel bit position
adjustment
4 so that the
NoTE: The arrow on the mode selector dial
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 or to postion
the chisel bit.
Indexing the Chisel Position (Fig. A)
The chisel can be indexed and locked into 24
different positions.
1. Rotate the mode selector switch
towards the position.
2. Rotate the chisel in the desired position.
3. Set the mode selector switch
Only" position.
4. Twist the chisel until it locks in position.
Performing an Application (Fig. A, F)

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
appropriate to desired application. Refer to
Operation Modes.
3. Adjust the side handle 2
Fig. F
4
2
4. Place the bit/chisel on the desired location.
5. Depress the trigger switch
6. To stop the hammer, release the switch.
Recommendations for Tool Operation
• Large (7,9 mm to 12,7 mm [ 5/16" to 1/2"]) holes in
steel can be made easier if a pilot hole (4 mm to 4,8 mm
[5/32" to 3/16"]) 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.
4 must be
until it points
4
4 to the "Hammering
4 , select the mode
as necessary.
1
1 .