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INSTRUCTION MANUAL

GUIDE D’UTILISA

TION

MANUAL DE INSTRUCCIONES

IINSTRUCTIVO DE OPERACIÓN, CENTROS DE SER

VICIO Y PÓLIZA DE

 

GARANTÍA. 

ADVER

TENCIA: 

LÉASE ESTE INSTRUCTIVO ANTES DE

 

USAR EL PRODUCTO.

 

D

E

WALT Industrial Tool Co., 701 East Joppa Road, Baltimore, MD 21286

(AUG13)   Part No. N330561   D25721, D25762, D25871, D25891   Copyright © 2010, 2013 D

E

WALT

The following are trademarks for one or more D

E

WALT power tools: the yellow and black color scheme, the “D” shaped air 

intake grill, the array of pyramids on the handgrip, the kit box configuration, and the array of lozenge-shaped humps on the 
surface of the tool.

If you have questions or comments, contact us.

Pour toute question ou tout commentaire, nous contacter

.

Si tiene dudas o comentarios, contáctenos.

1-800-4-D

E

W

A

L

T

 • www

.dewalt.com

Defi nitions: Safety Guidelines 

The definitions below describe the level of severity for each signal word. Please read the 
manual and pay attention to these symbols.

DANGER: 

Indicates an imminently hazardous situation which, if not avoided, 

will

 result in 

death or serious injury

.

WARNING:

 Indicates a potentially hazardous situation which, if not avoided, 

could

 result 

in 

death or serious injury

.

CAUTION:

 Indicates a potentially hazardous situation which, if not avoided, 

may

 result in 

minor or moderate injury

.

NOTICE:

 indicates a practice 

not related to personal injury

 which, if not avoided, 

may

 

result in 

property damage

.

IF YOU HAVE ANY QUESTIONS OR COMMENTS ABOUT THIS OR ANY D

E

WALT TOOL, CALL 

US TOLL FREE AT: 

1-800-4-D

E

WALT (1-800-433-9258)

.

 WARNING:

 To reduce the risk of injury, read the instruction manual.

General Power Tool Safety Warnings

WARNING! Read all safety warnings and all instructions. 

Failure to follow the warnings 

and instructions may result in electric shock, fire and/or serious injury.

SAVE ALL WARNINGS AND INSTRUCTIONS 

FOR FUTURE REFERENCE

The term “power tool” in the warnings refers to your mains-operated (corded) power tool or 
battery-operated (cordless) power tool.

1) WORK AREA SAFETY

a)

  Keep work area clean and well lit. 

Cluttered or dark areas invite accidents.

b)

  Do not operate power tools in explosive atmospheres, such as in the presence of 

flammable liquids, gases or dust. 

Power tools create sparks which may ignite the dust 

or fumes.

c)

  Keep children and bystanders away while operating a power tool. 

Distractions can 

cause you to lose control.

2) ELECTRICAL SAFETY

a)

  Power tool plugs must match the outlet. Never modify the plug in any way. Do not 

use any adapter plugs with earthed (grounded) power tools. 

Unmodified plugs and 

matching outlets will reduce risk of electric shock.

b)

  Avoid body contact with earthed or grounded surfaces such as pipes, radiators, 

ranges and refrigerators. 

There is an increased risk of electric shock if your body is 

earthed or grounded.

c)

  Do not expose power tools to rain or wet conditions. 

Water entering a power tool will 

increase the risk of electric shock.

d)

  Do not abuse the cord. Never use the cord for carrying, pulling or unplugging the 

power tool. Keep cord away from heat, oil, sharp edges or moving parts. 

Damaged 

or entangled cords increase the risk of electric shock. 

e)

  When operating a power tool outdoors, use an extension cord suitable for outdoor 

use. 

Use of a cord suitable for outdoor use reduces the risk of electric shock. 

f)

   If operating a power tool in a damp location is unavoidable,

 use a ground fault circuit 

interrupter (GFCI) protected supply. Use of a GFCI reduces the risk of electric shock.

3) PERSONAL SAFETY

a)

  Stay alert, watch what you are doing and use common sense when operating a 

power tool. Do not use a power tool while you are tired or under the influence of 
drugs, alcohol or medication.

 

A moment of inattention while operating power tools may 

result in serious personal injury.

b)

 Use personal protective equipment. Always wear eye protection. 

Protective 

equipment such as dust mask, non-skid safety shoes, hard hat, or hearing protection used 
for appropriate conditions will reduce personal injuries.

c)

 Prevent unintentional starting. Ensure the switch is in the off position before 

connecting to power source and/or battery pack, picking up or carrying the tool. 

Carrying power tools with your finger on the switch or energising power tools that have the 
switch on invites accidents.

d)

  Remove any adjusting key or wrench before turning the power tool on. 

A wrench or 

a key left attached to a rotating part of the power tool may result in personal injury.

e)

  Do not overreach. Keep proper footing and balance at all times. 

This enables better 

control of the power tool in unexpected situations.

f)

  Dress properly. Do not wear loose clothing or jewellery. Keep your hair, clothing 

and gloves away from moving parts. 

Loose clothes, jewellery or long hair can be caught 

in moving parts. 

g)

 If devices are provided for the connection of dust extraction and collection 

facilities, ensure these are connected and properly used. 

Use of dust collection can 

reduce dust-related hazards.

4) POWER TOOL USE AND CARE

a)

  Do not force the power tool. Use the correct power tool for your application. 

The 

correct power tool will do the job better and safer at the rate for which it was designed.

b)

  Do not use the power tool if the switch does not turn it on and off. 

Any power tool 

that cannot be controlled with the switch is dangerous and must be repaired.

c)

 Disconnect the plug from the power source and/or the battery pack from the 

power tool before making any adjustments, changing accessories, or storing 
power tools. 

Such preventive safety measures reduce the risk of starting the power tool 

accidentally.

d)

 Store idle power tools out of the reach of children and do not allow persons 

unfamiliar with the power tool or these instructions to operate the power tool. 

Power tools are dangerous in the hands of untrained users.

e)

  Maintain power tools. Check for misalignment or binding of moving parts, breakage 

of parts and any other condition that may affect the power tool’s operation. If 
damaged, have the power tool repaired before use. 

Many accidents are caused by 

poorly maintained power tools.

f)

  Keep cutting tools sharp and clean. 

Properly maintained cutting tools with sharp cutting 

edges are less likely to bind and are easier to control.

g)

 Use the power tool, accessories and tool bits etc., in accordance with these 

instructions taking into account the working conditions and the work to be 
performed. 

Use of the power tool for operations different from those intended could result 

in a hazardous situation.

5) SERVICE

a)

  Have your power tool serviced by a qualified repair person using only identical 

replacement parts.

 

This will ensure that the safety of the power tool is maintained.

Additional Safety Instructions for Rotary Hammers 

• 

Wear ear protectors.

 Exposure to noise can cause hearing loss.

• 

Use auxiliary handle(s), if supplied with the tool.

 Loss of control can cause personal injury.

• 

Hold power tool by insulated gripping surfaces when performing an operation where 
the cutting accessory may contact hidden wiring or its own cord. 

Cutting accessory 

contacting a “live” wire may make exposed metal parts of the power tool “live” and could give 
the operator an electric shock.

• 

Use clamps or other practical way to secure and support the workpiece to a stable 
platform. 

Holding the work by hand or against your body is unstable and may lead to loss of 

control.

• 

Wear safety goggles or other eye protection. 

Hammering operations cause chips to 

fly. Flying particles can cause permanent eye damage. Wear a dust mask or respirator for 
applications that generate dust. Ear protection may be required for most applications.

• 

Keep a firm grip on the tool at all times.

 Do not attempt to operate this tool without holding 

it with both hands. It is recommended that the side handle be used at all times. Operating this 
tool with one hand will result in loss of control. Breaking through or encountering hard materials 
such as re-bar may be hazardous as well. Tighten the side handle securely before use.

• 

Do not operate this tool for long periods of time.

 Vibration caused by hammer action may 

be harmful to your hands and arms. Use gloves to provide extra cushion and limit exposure by 
taking frequent rest periods.

• 

Do not recondition bits yourself.

 Chisel reconditioning should be done by an authorized 

specialist. Improperly reconditioned chisels could cause injury.

• 

Wear gloves when operating tool or 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.

• 

Never lay the tool down until the bit has come to a complete stop.

 Moving bits could 

cause injury.

• 

Do not strike jammed bits with a hammer to dislodge them.

 Fragments of metal or 

material chips could dislodge and cause injury.

• 

Keep the power cord away from the rotating bit.

 Do not wrap the cord around any part of 

your body. An electric cord wrapped around a spinning bit may cause personal injury and loss 
of control.

• 

Air vents often cover moving parts and should be avoided.

 Loose clothes, jewellery or 

long hair can be caught in moving parts.

• 

An extension cord must have adequate wire size (AWG or American Wire Gauge) for 
safety. 

The smaller the gauge number of the wire, the greater the capacity of the cable, that is 

16 gauge has more capacity than 18 gauge. An undersized cord will cause a drop in line voltage 
resulting in loss of power and overheating. When using more than one extension to make up 
the total length, be sure each individual extension contains at least the minimum wire size. The 
following table shows the correct size to use depending on cord length and nameplate ampere 
rating. If in doubt, use the next heavier gauge. The smaller the gauge number, the heavier the 
cord.

Minimum Gauge for Cord Sets

Ampere Rating

Volts

Total Length of Cord in Feet (meters)

120V

25 (7.6)

50 (15.2)

100 (30.5)

150 (45.7)

240V

50 (15.2)

100 (30.5)

200 (61.0)

300 (91.4)

More

Than

Not More 

Than

AWG

0

6

18

16

16

14

6

10

18

16

14

12

10

12

16

16

14

12

12

16

14

12

Not Recommended

WARNING: ALWAYS 

use safety glasses. Everyday eyeglasses are NOT safety glasses. Also use 

face or dust mask if cutting operation is dusty. ALWAYS WEAR CERTIFIED SAFETY EQUIPMENT:

•  ANSI Z87.1 eye protection (CAN/CSA Z94.3),
•  ANSI S12.6 (S3.19) hearing protection,
•  NIOSH/OSHA/MSHA respiratory protection.

 WARNING: 

Some dust created by power sanding, sawing, grinding, drilling, and other 

construction activities contains chemicals known to the State of California to cause cancer, birth 
defects or other reproductive harm. Some examples of these chemicals are:

•  lead from lead-based paints,
•  

crystalline silica from bricks and cement and other masonry products, and 

•  arsenic and chromium from chemically-treated lumber.

Your risk from these exposures varies, depending on how often you do this type of work. To reduce 
your exposure to these chemicals: work in a well ventilated area, and work with approved safety 
equipment, such as those dust masks that are specially designed to filter out microscopic particles.
• 

Avoid prolonged contact with dust from power sanding, sawing, grinding, drilling, and 
other construction activities. Wear protective clothing and wash exposed areas with 
soap and water. 

Allowing dust to get into your mouth, eyes, or lay on the skin may promote 

absorption of harmful chemicals. 

 WARNING: 

Use of this tool can generate and/or disperse dust, which may cause serious and 

permanent respiratory or other injury. Always use NIOSH/OSHA approved respiratory protection 
appropriate for the dust exposure. Direct particles away from face and body.

WARNING: Always wear proper personal hearing protection that conforms to ANSI 

S12.6 (S3.19) during use. 

Under some conditions and duration of use, noise from this product 

may contribute to hearing loss.
•  The label on your tool may include the following symbols. The symbols and their definitions 

are as follows:

V .....................volts 

A .........................amperes

Hz ...................hertz 

W ........................watts

min .................minutes 

or AC .............alternating current

or DC .....direct current 

or AC/DC......alternating or direct current

 ...................Class I Construction 

no .......................no load speed

 .......................(grounded) n 

.........................rated 

speed

 ...................Class  II  Construction 

 .......................earthing terminal

(double insulated)  

 ........................safety alert symbol

…/min ............per minute  

BPM ...................beats per minute

IPM .................impacts per minute  

RPM ...................revolutions per minute

SPM ...............strokes per minute  

sfpm ...................surface feet per minute

Motor

Your D

E

WALT tool is powered by a D

E

WALT-built motor. Be sure your power supply agrees with the 

nameplate markings. Voltage decrease of more than 10% will cause loss of power and overheating. 
All D

E

WALT tools are factory tested.

COMPONENTS (Fig. 1–6)

WARNING: 

Never modify the power tool or any part of it. Damage or personal injury could result.

 

A.  Trigger switch (D25721, D25762) 

L.  Collar

 

  On/off rocker switch (D25871, D25891) 

M. Tool holder

 

B.  Lock-on slider (D25721, D25762) 

N.  Bushing

 C. 

Side 

handle 

O. 

Pin

 

D.  Main handle 

P.  Locking sleeve

 

E.  SHOCKS Active Vibration Control

®

 

Q. Side handle knob

 

F.  Mode selector 

R.  Clutch setting 1 (40 Nm)

 

G. Electronic speed and impact control dial 

S.  Clutch setting 2 (80 Nm)

 

H.  Clamp wheel 

T.  Yellow brush wear indicator LED

 

I.  Rear side handle position 

U.  Red indicator LED

 

J.  Side handle clamp 

V.  Torque control lever

 

K.  Steel ring 

W. Side handle mounting area

INTENDED USE

These heavy-duty rotary hammers have been designed for professional hammerdrilling and 
chipping at various work sites (i.e., construction sites). 

DO NOT

 use under wet conditions or in 

presence of flammable liquids or gases.
These heavy-duty rotary hammers are professional power tools. 

DO NOT

 let children come into 

contact with the tool. Supervision is required when inexperienced operators use this tool.

ASSEMBLY AND ADJUSTMENTS

 WARNING: To reduce the risk of injury, turn unit off and disconnect it from power 

source before installing and removing accessories, before adjusting or when making 
repairs.

 An accidental start-up can cause injury.

Perform and Protect Control (Fig. 1)

D25762 ONLY

These hammers are equipped with both 2-stage clutch. These features sense the motion of the 
tool and reduce the motor torque to a manageable level if necessary. The red indicator LED (U) will 
illuminate to indicate status.

INDICATOR

DIAGNOSIS

SOLUTION

OFF

Tool is functioning 
normally

Follow all warnings and 
instructions when operating tool

SOLID

Perform and protect 
control has been 
activated

With tool properly supported, 
release trigger; The tool will 
function normally when the 
trigger is depressed again and 
the indicator light will go out

FLASHING

Perform and 
protect control is 
malfunctioning

Take the tool to an authorized 
D

E

WALT repair agent.

NOTE:

 If the tool power is insufficient for normal hammering and the LED does not flash, take the 

tool to an authorized D

E

WALT repair center.

D25721 1-7/8" (48 mm) SDS Max

®

 Hammer; D25762 2" (52 mm) SDS Max

®

 Hammer; D25871, D25891

 

Chipping Hammer

Marteau SDS Max

®

 D25721 48 

mm (1 

7/8 

po); Marteau SDS Max

®

 D25762 52 

mm (2 

po); Marteaux

 

burineur D25871, D25891

Martillo SDS Max

®

 de 48 

mm (1-7/8") D25721; Martillo SDS Max

®

 de 52 

mm (2") D25762; Martillos

 

cincelador D25871, D25891

Summary of Contents for D25721K

Page 1: ...ion Hammering operations cause chips to fly Flying particles can cause permanent eye damage Wear a dust mask or respirator for applications that generate dust Ear protection may be required for most applications Keep a firm grip on the tool at all times Do not attempt to operate this tool without holding it with both hands It is recommended that the side handle be used at all times Operating this ...

Page 2: ...d indicator LED U lights up if the lock on slider B and or electronic clutch is engaged in any mode except the chipping mode The red indicator LED U starts to flash if there is a fault with the tool or the brushes have completely worn out refer to Repairs under Maintenance OPERATION WARNING To reduce the risk of injury turn unit off and disconnect it from power source before installing and removin...

Page 3: ...tiliser d outil électrique en cas de fatigue ou sous l influence de drogues d alcool ou de médicaments Un simple moment d inattention en utilisant un outil électrique peut entraîner des blessures corporelles graves b Utiliser des équipements de protection individuelle Toujours porter une protection oculaire L utilisation d équipements de protection comme un masque antipoussière des chaussures anti...

Page 4: ... à percussion MAINTENANCE AVERTISSEMENT pour réduire le risque de blessures éteindre l appareil et le débrancher avant d installer ou de retirer tout accessoire et avant d effectuer des réglages ou des réparations Un démarrage accidentel peut provoquer des blessures Balais de moteur DEWALT utilise un système de balais qui immobilisent automatiquement la perceuse lorsqu ils sont usés Cela protège l...

Page 5: ...tuercas o una clavija de ajuste que quede conectada a una pieza giratoria de la herramienta eléctrica puede provocar lesiones personales e No se estire Conserve el equilibrio y párese adecuadamente en todo momento Esto permite un mejor control de la herramienta eléctrica en situaciones inesperadas f Use la vestimenta adecuada No use ropas holgadas ni joyas Mantenga el cabello la ropa y los guantes...

Page 6: ...e la broca y la dureza del material taladrado Selector de modo Fig 1 ATENCIÓN Nunca cambie el modo mientras que la unidad esté funcionando ATENCIÓN No cambie a la modalidad de taladro percutor con la broca para cincelado en el portaherramientas Podrían presentarse lesiones corporales y daños a la herramienta Para seleccionar el modo operativo requerido gire el selector de modalidad F hasta que la ...

Page 7: ...ión del producto y o componentes sin cargo alguno para el cliente incluyendo mano de obra así como los gastos de transportación razonablemente erogados derivados del cumplimiento de este certificado Para hacer efectiva esta garantía deberá presentar su herramienta y esta póliza sellada por el establecimiento comercial donde se adquirió el producto de no contar con ésta bastará la factura de compra...

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