Makita HM1304B User Manual

INSTRUCTION MANUAL
MANUEL D'INSTRUCTION
MANUAL DE INSTRUCCIONES

Demolition Hammer
Marteau de démolition
Martillo Domoledor

HM1304B

003891

DOUBLE INSULATION
DOUBLE ISOLATION
DOBLE AISLAMIENTO

WARNING:

For your personal safety, READ and UNDERSTAND before using.
SAVE THESE INSTRUCTIONS FOR FUTURE REFERENCE.

AVERTISSEMENT:

Pour votre propre sécurité, prière de lire attentivement avant l’utilisation.
GARDER CES INSTRUCTIONS POUR RÉFÉRENCE ULTÉRIEURE.

ADVERTENCIA:

Para su seguridad personal, LEA DETENIDAMENTE este manual antes de usar la herramienta.
GUARDE ESTAS INSTRUCCIONES PARA FUTURA REFERENCIA.

ENGLISH

SPECIFICATIONS

Model HM1304B

Blows per minute 1,450

Overall length 831 mm (32 - 3/4”)

Net weight 17 kg (37.5 lbs)

• Due to our continuing programme of research and development, the specifications herein are subject to change
without notice.

• Note: Specifications may differ from country to country.

GENERAL SAFETY RULES

USA002-2

(For All Tools)

WARNING:

Read and understand all instructions.

Failure to follow all instructions listed below,
may result in electric shock, fire and/or seri­ous personal injury.

SAVE THESE INSTRUCTIONS

Work Area

1. Keep your work area clean and well lit. Cluttered

benches and dark areas invite accidents.

2. Do not operate power tools in explosive atmo-

spheres, such as in the presence of flammable
liquids, gases, or dust. Power tools create sparks

which may ignite the dust or fumes.

3. Keep bystanders, children, and visitors away

while operating a power tool. Distractions can

cause you to lose control.

Electrical Safety

4. Double insulated tools are equipped with a

polarized plug (one blade is wider than the
other.) This plug will fit in a polarized outlet only
one way. If the plug does not fit fully in the outlet,
reverse the plug. If it still does not fit, contact a
qualified electrician to install a polarized outlet.
Do not change the plug in any way. Double insula-

tion eliminates the need for the three wire
grounded power cord and grounded power supply
system.

5. Avoid body contact with grounded surfaces

such as pipes, radiators, ranges and refrigera­tors. There is an increased risk of electric shock if

your body is grounded.

6. Do not expose power tools to rain or wet condi­tions. Water entering a power tool will increase the

risk of electric shock.

7. Do not abuse the cord. Never use the cord to
carry the tools or pull the plug from an outlet.
Keep cord away from heat, oil, sharp edges or
moving parts. Replace damaged cords immedi­ately. Damaged cords increase the risk of electric

shock.

8. When operating a power tool outside, use an
outdoor extension cord marked “W-A” or “W”.

These cords are rated for outdoor use and reduce
the risk of electric shock.

Personal Safety

9. Stay alert, watch what you are doing and use
common sense when operating a power tool. Do
not use tool while tired or under the influence of
drugs, alcohol, or medication. A moment of inat-

tention while operating power tools may result in
serious personal injury.

10. Dress properly. Do not wear loose clothing or
jewelry. Contain long hair. Keep your hair, cloth­ing, and gloves away from moving parts. Loose

clothes, jewelry, or long hair can be caught in mov­ing parts.

11. Avoid accidental starting. Be sure switch is off
before plugging in. Carrying tools with your finger

on the switch or plugging in tools that have the
switch on invites accidents.

12. Remove adjusting keys or wrenches before turn­ing the tool on. A wrench or a key that is left

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

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

enables better control of the tool in unexpected situ­ations.

14. Use safety equipment. Always wear eye protec­tion. Dust mask, non-skid safety shoes, hard hat, or

hearing protection must be used for appropriate con­ditions. Ordinary eye or sun glasses are NOT eye
protection.

2

Tool Use and Care

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

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

16. Do not force tool. Use the correct tool for your
application. The correct tool will do the job better

and safer at the rate for which it is designed.

17. Do not use tool if switch does not turn it on or
off. Any tool that cannot be controlled with the

switch is dangerous and must be repaired.

18. Disconnect the plug from the power source
before making any adjustments, changing
accessories, or storing the tool. Such preventive

safety measures reduce the risk of starting the tool
accidentally.

19. Store idle tools out of reach of children and
other untrained persons. Tools are dangerous in

the hands of untrained users.

20. Maintain tools with care. Keep cutting tools
sharp and clean. Properly maintained tools with

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

21. Check for misalignment or binding of moving
parts, breakage of parts, and any other condition
that may affect the tools operation. If damaged,

have the tool serviced before using. Many acci-

dents are caused by poorly maintained tools.

22. Use only accessories that are recommended by
the manufacturer for your model. Accessories

that may be suitable for one tool, may become haz­ardous when used on another tool.

SERVICE

23. Tool service must be performed only by qualified
repair personnel. Service or maintenance per-

formed by unqualified personnel could result in a risk
of injury.

24. When servicing a tool, use only identical
replacement parts. Follow instructions in the
Maintenance section of this manual. Use of unau-

thorized parts or failure to follow Maintenance
instructions may create a risk of electric shock or
injury.

USE PROPER EXTENSION CORD: Make sure your
extension cord is in good condition. When using an
extension cord, be sure to use one heavy enough to
carry the current your product will draw. An undersized
cord will cause a drop in line voltage resulting in loss of
power and overheating. Table 1 shows the correct size to
use depending on cord length and nameplate ampere
rating. If in doubt, use the next heavier gage. The smaller
the gage number, the heavier the cord.

Table 1. Minimum gage for cord

Ampere Rating

Volts Total length of cord in feet

120 V 25 ft. 50 ft. 100 ft. 150 ft.

More Than Not More Than AWG

0 6 18 16 16 14

6 10 18161412
10 12 16 16 14 12
12 16 14 12 Not Recommended

SPECIFIC SAFETY RULES

USB009-2

DO NOT let comfort or familiarity with
product (gained from repeated use)
replace strict adherence to hammer
safety rules. If you use this tool unsafely
or incorrectly, you can suffer serious per­sonal injury.

1. Hold tools by insulated gripping surfaces when
performing an operation where the cutting tool
may contact hidden wiring or its own cord. Con-

tact with a “live” wire will make exposed metal parts
of the tool “live” and shock the operator.

2. Wear ear protectors when using the tool for
extended periods. Prolonged exposure to high

intensity noise can cause hearing loss.

3. Wear a hard hat (safety helmet), safety glasses
and/or face shield. Ordinary eye or sun glasses
are NOT safety glasses. It is also highly recom­mended that you wear a dust mask and thickly
padded gloves.

4. Be sure the bit is secured in place before opera­tion.

5. Under normal operation, the tool is designed to
produce vibration. The screws can come loose
easily, causing a breakdown or accident. Check
tightness of screws carefully before operation.

6. In cold weather or when the tool has not been
used for a long time, let the tool warm up for a
while by operating it under no load. This will

3

loosen up the lubrication. Without proper warm­up, hammering operation is difficult.

7. Always be sure you have a firm footing.
Be sure no one is below when using the tool in
high locations.

8. Hold the tool firmly with both hands.

9. Keep hands away from moving parts.

10. Do not leave the tool running. Operate the tool
only when hand-held.

11. Do not point the tool at any one in the area when
operating. The bit could fly out and injure some­one seriously.

12. Do not touch the bit or parts close to the bit
immediately after operation; they may be
extremely hot and could burn your skin.

13. Some material contains chemicals which may be
toxic. Take caution to prevent dust inhalation
and skin contact. Follow material supplier safety
data.

SAVE THESE INSTRUCTIONS

WARNING:

MISUSE or failure to follow the safety
rules stated in this instruction manual
may cause serious personal injury.

SYMBOLS

The followings show the symbols used for tool.

V............................volts

A ...........................amperes

Hz..........................hertz

..................alternating current

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

.../min....................revolutions or reciprocation per

..................number of blow

minute

USD203-2

FUNCTIONAL DESCRIPTION

CAUTION:

• Always be sure that the tool is switched off and

unplugged before adjusting or checking function on
the tool.

Switch action

CAUTION:

• Before plugging in the tool, always check to see

that the switch trigger actuates properly and returns
to the “OFF” position when released.

• Switch can be locked in “ON” position for ease of

operator comfort during extended use. Apply cau­tion when locking tool in “ON” position and maintain
firm grasp on tool.

To start the tool, simply pull the switch trigger. Release
the switch trigger to stop.
For continuous operation, pull the switch trigger and then
slide down the lock button.
To stop the tool from the locked position, pull the switch
trigger fully, then release it.

003892

1

2

1. Lock button

2. Switch trigger

ASSEMBLY

CAUTION:

• Always be sure that the tool is switched off and

unplugged before carrying out any work on the tool.

Side handle (auxiliary handle)

5

4

The side handle can be either freely swiveled or secured
at one position for use during tool operation. Just loosen
the nut to swivel the handle freely.
To secure the handle at a fixed position, first loosen the
nut and swing the handle to the desired position for use.
Then tighten the nut firmly. If the set bolt turns together
with the nut when you secure the nut, see that the pro­jecting portion of the side handle fits into the notch on the
head of the set bolt.

003893

1

2

3

1. Side handle

2. Nut

3. Projecting por­tion of side han­dle

4. Notch on set
bolt

5. Set bolt

4

Installing or removing the bit

This tool accepts bits either with or without a collar on its
shank.

002928

1

2

1. Bit with collar

2. Bit without collar

far as it will go. Then pivot the tool retainer further
downward toward the barrel to securely retain the
bit.

CAUTION:

• Always assure that the bit is securely retained by

attempting to pull the bit out of the tool holder after
completing the above procedure.

• The bit without a collar cannot be retained by the

method shown in Fig.(1).

To remove the bit, follow the installation procedure in
reverse.

To install the bit, follow either procedure (1) or (2)
described below.

(1) For bits with a collar

1

2

3

45

1. Bit 2. Tool retainer

3. Tool holder 4. When the bit is inserted

5. When the bit is retained

Pivot the tool retainer back and slightly downward.
Insert the bit into the tool holder as far as it will go.
To securely retain the bit, return the tool retainer to
its original position.

CAUTION:

• Always assure that the bit is securely retained by

attempting to pull the bit out of the tool holder after
completing the above procedure.

(2) For bits without a collar

1
2

3

45

1. Notched portion 2. Tool retainer shaft

3. Barrel 4. When the bit is inserted

5. When the bit is retained

003894

003895

OPERATION

Chipping/Scaling/Demolition

Hold the tool firmly with both hands. Turn the tool on and
apply slight pressure on the tool so that the tool will not
bounce around, uncontrolled. Pressing very hard on the
tool will not increase the efficiency.

MAINTENANCE

CAUTION:

• Always be sure that the tool is switched off and

unplugged before attempting to perform inspection
or maintenance.

Replacing carbon brushes

1

When the resin insulating tip inside the carbon brush is
exposed to contact the commutator, it will automatically
shut off the motor. When this occurs, both carbon
brushes should be replaced. Keep the carbon brushes
clean and free to slip in the holders. Both carbon brushes
should be replaced at the same time. Use only identical
carbon brushes.

Use a screwdriver to remove the holder cap plates.

1

001146

1. Commutator

2

3

2. Insulating tip

3. Carbon brush

003896

1. Holder cap plate

2. Screwdriver

2

Pivot the tool retainer back and slightly downward.
With the notched portion of the bit facing the tool
retainer shaft, insert the bit into the tool holder as

5

Use a screwdriver to remove the brush holder caps. Take
out the worn carbon brushes, insert the new ones and
secure the brush holder caps.

003897

1. Brush holder
cap

1

2

2. Screwdriver

Reinstall the holder cap plates firmly.

Lubrication

This tool requires no hourly or daily lubrication because it
has a grease-packed lubrication system. It should be
relubricated after every 6 months of operation. Send the
complete tool to Makita Authorized or Factory Service
Center for this lubrication service. However, if circum­stances require that you should lubricate it by yourself,
proceed as follows.

Run the tool for several minutes to warm it up. Switch off
and unplug the tool.

Remove the crank cap using a hex wrench, then replen­ish with fresh grease (60 g; 2 oz). Use only Makita genu­ine hammer grease (optional accessory). Filling with
more than the specified amount of grease (approx. 60 g;
2 oz) can cause faulty hammering action or tool failure.
Fill only with the specified amount of grease.

1
2

1

Reinstall the crank cap securely with the hex wrench.
To maintain product SAFETY and RELIABILITY, repairs,

any other maintenance or adjustment should be per­formed by Makita Authorized or Factory Service Centers,
always using Makita replacement parts.

003898

1. Hex wrench

2. Crank cap

003899

1. Hammer grease

ACCESSORIES

CAUTION:

• These accessories or attachments are recom-

mended for use with your Makita tool specified in
this manual. The use of any other accessories or
attachments might present a risk of injury to per­sons. Only use accessory or attachment for its
stated purpose.

If you need any assistance for more details regarding
these accessories, ask your local Makita Service Center.

• Bull point

• Cold chisel

• Scaling chisel

• Clay spade

• Rammer

• Hammer grease

• Safety goggles

• Steel carrying case

MAKITA LIMITED ONE YEAR WARRANTY

Warranty Policy

Every Makita tool is thoroughly inspected and tested
before leaving the factory. It is warranted to be free of
defects from workmanship and materials for the period of
ONE YEAR from the date of original purchase. Should
any trouble develop during this one year period, return
the COMPLETE tool, freight prepaid, to one of Makita’s
Factory or Authorized Service Centers. If inspection
shows the trouble is caused by defective workmanship or
material, Makita will repair (or at our option, replace)
without charge.

This Warranty does not apply where:

• repairs have been made or attempted by others:

• repairs are required because of normal wear and

tear:

• the tool has been abused, misused or improperly

maintained:

• alterations have been made to the tool.

IN NO EVENT SHALL MAKITA BE LIABLE FOR ANY
INDIRECT, INCIDENTAL OR CONSEQUENTIAL DAM­AGES FROM THE SALE OR USE OF THE PRODUCT.
THIS DISCLAIMER APPLIES BOTH DURING AND
AFTER THE TERM OF THIS WARRANTY.

MAKITA DISCLAIMS LIABILITY FOR ANY IMPLIED
WARRANTIES, INCLUDING IMPLIED WARRANTIES
OF “MERCHANTABILITY” AND “FITNESS FOR A SPE­CIFIC PURPOSE,” AFTER THE ONE YEAR TERM OF
THIS WARRANTY.

This Warranty gives you specific legal rights, and you
may also have other rights which vary from state to state.
Some states do not allow the exclusion or limitation of
incidental or consequential damages, so the above limi­tation or exclusion may not apply to you. Some states do
not allow limitation on how long an implied warranty lasts,
so the above limitation may not apply to you.

6

EN0006-1