Overload Clutch - DeWalt D25481 Original Instructions Manual

English
Active Vibration Control
For best vibration control, hold the tool as described in Proper
Hand Position.
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
vibraton control. Applying too much pressure will not make
the tool drill or chip faster and active vibration control will
not engage.
ASSEMBLY AND ADJUSTMENTS

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. Be sure the
trigger switch is in the OFF position. An accidental start-up
can cause injury.
Side Handle (Fig. A–B)

WARNING: To reduce the risk of personal injury, ALWAYS
operate the tool with the side handle properly installed.
Failure to do so may result in the side handle slipping
during tool operation and subsequent loss of control. Hold
tool with both hands to maximize control.
The side handle 2 clamps to the front of the gear case and may
be rotated 360˚ to permit right- or left-hand use.
Mounting the Straight Side Handle (Fig. B)
1. Widen the ring opening of the side handle
anti-clockwise.
2. Place the assembly onto the tool by the putting the nose of
the tool through the steel ring
the bit holder and sleeve.
3. Rotate the side handle assembly to the desired position. For
hammerdrilling horizontally with a heavy drill bit, place the
side handle assembly at an angle of approximately 20° to
the tool for optimum control.
4. Lock the side handle mounting assembly in place by
securely tightening the handle
that the assembly will not rotate.
Bit and Bit Holder

WARNING: Burn Hazard. ALWAYS wear gloves when
changing bits. Accessible metal parts on the tool and bits
may get extremely hot during operation. Small bits of
broken material may damage bare hands.

WARNING: Do not attempt to tighten or loosen drill bits
(or any other accessory) by gripping the front part of the
chuck and turning the tool on. Damage to the chuck and
personal injury may occur.
The rotary hammer can be fitted with various chisel bits
depending on the desired application. Use sharp drill
bits only.
6
by rotating it
2
and onto the collar past
9 3
2 rotating it clockwise so
Inserting and Removing SDS Bits (Fig. C)
1. Pull back the locking sleeve
bit shank must be clean.
2. Turn the bit slightly until the sleeve snaps back into position.
3. Ensure the bit is properly engaged.
nOTE: The bit needs to move several centimeters in and out
of the bit holder 7 when properly engaged.
To remove the bit, pull back the locking sleeve and pull the
bit out.
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. Be sure the
trigger switch is in the OFF position. An accidental start-up
can cause injury.
Proper Hand Position (Fig. D)

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 mounted side
handle, with the other hand on the main handle.

Overload Clutch

In case of jamming of a drill bit, the drive to the drill spindle
is interrupted by the overload clutch. Due to the resulting
forces, always hold the tool with both hands and take a
firm stance. After the overload, release and depress the trigger
to re-engage drive.
Mechanical Clutch
These tools are fitted 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. 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
mode appropriate to desired operation.
and insert the bit shank. The
8
4 to select the