Soft Start Feature; Operation - DeWalt D25911 Original Instructions Manual

lED Function
Yellow
(permanently on)
Yellow
(flashing)
Active Vibration Control (AVC) System
For best vibration control, hold the tool as described in Proper
Hand Position and apply just enough pressure so the damping
device on the main handle is approximately midstroke.
The active vibration control neutralises rebound vibration from
the hammer mechanism. Lowering hand and arm vibration,
it allows more comfortable use for longer periods of time and
extends the life of the unit.
The hammer only needs enough pressure to engage the active
vibration control. Applying too much pressure will not make
the tool drill or chip faster and active vibration control will
not engage.

Soft Start Feature

The soft start feature allows the tool to accelerate slowly, thus
preventing the drill bit from walking off the intended hole
position when starting.
The soft start feature also reduces the immediate torque
reaction transmitted to the gearing and the operator if the
hammer is started with the drill bit in an existing hole.
D WALT Tool Tag Ready (Fig. F)
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Optional Accessory
Your demolition hammer comes with Tool Tag mounting
holes 8 and fasteners 12 for installing a D
will need a T15 bit tip to install the tag.

WARNING: Use only original fasteners. Longer screws
increase the risk of electrical shock or damage to the tool.
The D WALT Tool Tag is designed for tracking and locating
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professional power tools, equipment, and machines using
the D WALT Tool Connect™ app. For proper installation of the
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D WALT Tool Tag refer to the D
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Dust Extraction System (Fig. G)
The use of a dust extraction system (DWH051) is recommended
to reduce potentially harmful airborne dust and to prolong tool
and accessory life.
Consult your dealer for further information on suitable dust
extraction systems.
Description
service required
The yellow service indicator
LED 10 lights up to indicate
the tool needs servicing within
the next 10 hours of use (new
lubrication and hammer
mechanism sealing).
service exceeded
With the service indicator lit,
after a further 10 hours of use
the service indicator flashes to
indicate the tool has exceeded
the required service interval.
WALT Tool Tag. You
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WALT Tool Tag manual.
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OPERATION

Instructions for Use

WARNING: Always observe the safety instructions and
applicable regulations.

WARNING: To reduce the risk of serious personal
injury, turn tool off and disconnect tool from power
source before making any adjustments or removing/
installing attachments or accessories. An accidental
start‑up can cause injury.

WARNING: Always observe the safety instructions and
applicable regulations.

WARNING: Be aware of the location of pipework
and wiring.

WARNING: Apply a pressure of approx. 44–66 lbs.
(20–30 kg) to the tool. Excessive force does not speed
up chiselling but decreases tool performance and may
shorten tool life.
Proper Hand Position (Fig. E1, E2)

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.
iMPORTAnT: The tool must be held with two hands at all times
when in use.
Horizontal Applications (Fig. E1)
Proper hand position requires one hand on the bail/loop style
auxiliary handle 5 with the other hand on the main handle
Vertical Applications (Fig. E2)
Proper hand position requires both hands on the
main handle .
2
Switching On and Off (Fig. A)
Switching on: set the on/off switch
Switching off: set the on/off switch
Demolition (Fig. A)

WARNING: Ensure that the cutting edge does not show
discoloration caused by too much pressure. This may
impair the hardness of the accessory.
Various types of chisels are available as an option.
1. Select the appropriate chisel. Clean the chisel shank.
2. Insert the chisel and check whether it is properly locked.
3. Set the desired impact energy level.
4. Fit and adjust the bail/loop style auxiliary handle
make sure it is firmly tightened.
5. Hold the tool with main handle and switch on. The tool now
runs in continuous operation.
iMPORTAnT: AlWAYs use two hands when operating the
tool. Refer to Proper Hand Position for the proper use of
the tool for both horizontal and vertical applications.
English
2
1 to position 1.
1 to position 0.
5 and
.
7