Rotary Hammer
24 mm (15/16”)
MODEL HR2400
003093
DOUBLE
INSULATION
I N S T R U C T I O N M A N U A L
WARNING:
For your personal safety, READ and UNDERSTAND before using.
SAVE THESE INSTRUCTIONS FOR FUTURE REFERENCE.
w w w. m a k i t a t o o l s . c o m
trician to install a polarized outlet. Do not
change the plug in any way. Double insula-
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.
tion
eliminates the need for the three wire
grounded power cord and grounded power
supply system.
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.
5. Avoid body contact with grounded sur-
faces such as pipes, radiators, ranges and
refrigerators. There is an increased risk of
electric shock if your body is grounded.
Tool Use and Care
6. Do not expose power tools to rain or wet
conditions. Water entering a power tool will
increase the risk of electric shock.
15. 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.
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.
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.
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.
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.
Personal Safety
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.
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 inattention while
operating power tools may result in serious
personal injury.
19. Store idle tools out of reach of children
and other untrained persons. Tools are
dangerous in the hands of untrained users.
10. Dress properly. Do not wear loose cloth-
ing 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.
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.
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.
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 ser-
viced before using. Many accidents are
caused by poorly maintained tools.
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.
22. Use only accessories that are recom-
mended by the manufacturer for your
3
model. Accessories that may be suitable for
one tool, may become hazardous when used
on another tool.
tenance performed 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 unauthorized parts or failure to follow
Maintenance instructions may create a risk of
electric shock or injury.
SERVICE
23. Tool service must be performed only by
qualified repair personnel. Service or main-
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 num-
ber, the heavier the cord.
Table 1: Minimum gage for cord
Volts
120 V
Total length of cord in feet
Ampere Rating
25 ft.
50 ft.
100 ft.
150 ft.
More Than
Not More Than
AWG
0
6
10
12
6
18
18
16
14
16
16
16
12
16
14
14
14
12
12
10
12
16
Not Recommended
SPECIFIC SAFETY RULES
USB010-2
DO NOT let comfort or familiarity with product (gained from
repeated use) replace strict adherence to rotary 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. Contact with a “live” wire will
make exposed metal parts of the tool “live”
and shock the operator.
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.
2. Wear ear protectors when using the tool
for extended periods. Prolonged exposure
4. Be sure the bit is secured in place before
operation.
4
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.
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.
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 loosen up the lubrica-
tion. Without proper warm-up, hammering
operation is difficult.
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.
7. Always be sure you have a firm footing.
Be sure no one is below when using the
tool in high locations.
13. Some material contains chemicals which
may be toxic. Take caution to prevent dust
inhalation and skin contact. Follow mate-
rial supplier safety data.
8. Hold the tool firmly with both hands.
SAVE THESE INSTRUCTIONS
WARNING:
MISUSE or failure to follow the safety rules stated in this
instruction manual may cause serious personal injury.
5
FUNCTIONAL
DESCRIPTION
CAUTION:
•
Always be sure that the tool is switched off and
unplugged before adjusting or checking function on the
tool.
003106
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.
1
2
•
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.
1. Switch trigger
2. Lock lever
To start the tool, simply pull the switch trigger. Tool speed is
increased by increasing pressure on the switch trigger.
Release the switch trigger to stop.
For continuous operation, pull the switch trigger and then
slide the lock lever upward.
To stop the tool from the locked position, pull the switch trig-
ger fully, then release it.
003114
Reversing switch action
This tool has a reversing switch to change the direction of
rotation. Press the upper side (FWD side) of the reversing
switch for clockwise rotation or the lower side (REV side) of
the reversing switch for counterclockwise rotation.
1
CAUTION:
•
•
Always check the direction of rotation before operation.
1. Reversing switch
Use the reversing switch only after the tool comes to a
complete stop. Changing the direction of rotation before
the tool stops may damage the tool.
6
003123
Selecting the action mode
This tool employs an action mode changing knob. Select one
of the three modes suitable for your work needs by using this
knob.
For rotation only, turn the knob so that the arrow on the knob
points toward the
For hammering only, turn the knob so that the arrow on the
knob points toward the mark on the tool body.
For rotation with hammering, turn the knob so that the arrow
mark on the tool body.
1
1. Action mode changing knob
on the knob points toward the
mark on the tool body.
CAUTION:
•
Always set the knob correctly to your desired mode
mark. If you operate the tool with the knob positioned
halfway between the mode marks, the tool may be
damaged.
NOTE:
When it is hard to turn the knob, pull the switch trigger
halfway for running at low speed and turn the knob.
•
Torque limiter
The torque limiter will actuate when a certain torque level is
reached. The motor will disengage from the output shaft.
When this happens, the bit will stop turning.
CAUTION:
•
•
As soon as the torque limiter actuates, switch off the tool
immediately. This will help prevent premature wear of the
tool.
Hole saws, core bits, diamond core bits, etc. cannot be
used with this tool. They tend to pinch or catch easily in
the hole. This will cause the torque limiter to actuate too
frequently.
ASSEMBLY
CAUTION:
•
Always be sure that the tool is switched off and
unplugged before carrying out any work on the tool.
7
003143
Side grip (auxiliary handle)
2
The side grip swings around to either side, allowing easy
handling of the tool in any position. Loosen the clamp screw
on the side grip and swing the side grip to the desired posi-
tion. Then tighten the clamp screw to secure the side grip.
1
1. Side grip
2. Clamp screw
Bit grease (optional accessory)
Coat the bit shank head beforehand with a small amount of
bit grease (about 0.5 -1 g; 0.02 - 0.04 oz.). This chuck lubri-
cation assures smooth action and longer service life.
003150
Installing or removing the bit
Clean the bit shank and apply bit grease before installing the
bit.
2
1
1. Bit shank
2. Bit grease
003158
Insert the bit into the tool. Turn the bit and push it in until it
engages.
If the bit cannot be pushed in, remove the bit. Pull the chuck
cover down a couple of times. Then insert the bit again. Turn
the bit and push it in until it engages.
1
2
After installing, always make sure that the bit is securely held
in place by trying to pull it out.
1. Bit
2. Chuck cover
8
003163
To remove the bit, pull the chuck cover down all the way and
pull the bit out.
1
2
1. Bit
2. Chuck cover
Using cold chisel or bull point
003178
When using optional cold chisel or bull point, proceed as fol-
lows.
1
2
3
1. Unplug the tool.
2. Remove the side grip from the tool.
3. Set the action mode changing knob to “rotation with
hammering” symbol.
4. Install the cold chisel or bull point and then the chisel
adapter (optional accessory) on the tool.
1. Chisel adapter
2. Clamp screw
3. Chisel
5. Rotate the cold chisel toward the direction suitable for
your work. Then secure the cold chisel and chisel
adapter by using the clamp screw on the chisel adapter.
6. Turn the action mode changing knob to “hammering
only” symbol. Now you can use the cold chisel or bull
point.
CAUTION:
•
Always use ’’hammering only’’ action when the chisel
adapter is installed on the tool. If you use ’’rotation with
hammering’’ or ’’rotation only’’ action, a malfunction and
damage to the tool will result.
003181
Depth gauge
1
The depth gauge is convenient for drilling holes of uniform
depth. Insert the depth gauge into the hole in the grip base.
Adjust the depth gauge to the desired depth and then tighten
the clamp screw to secure the depth gauge.
2
NOTE:
•
The depth gauge cannot be used at the position where
the depth gauge strikes against the tool body.
1. Clamp screw
2. Depth gauge
9
003186
Dust cup (optional accessory)
Use the dust cup to prevent dust from falling over the tool
and on yourself when performing overhead drilling opera-
tions. Attach the dust cup to the bit as shown in the figure.
The size of bits which the dust cup can be attached to is as
follows.
1
Bit diameter
Dust cup 5 6 mm (1/4”) - 14.5 mm (9/16”)
Dust cup 9 12 mm (15/32”) - 16 mm (5/8”)
1. Dust cup
Hammer drilling operation
OPERATION
Set the action mode changing knob to the
symbol.
Position the bit at the desired location for the hole, then pull
the switch trigger. Do not force the tool. Light pressure gives
best results. Keep the tool in position and prevent it from slip-
ping away from the hole.
Do not apply more pressure when the hole becomes clogged
with chips or particles. Instead, run the tool at an idle, then
remove the bit partially from the hole. By repeating this sev-
eral times, the hole will be cleaned out and normal drilling
may be resumed.
CAUTION:
•
There is a tremendous and sudden twisting force
exerted on the tool/bit at the time of hole break-through,
when the hole becomes clogged with chips and
particles, or when striking reinforcing rods embedded in
the concrete. Always use the side grip (auxiliary handle)
and firmly hold the tool by both side grip and switch
handle during operations. Failure to do so may result in
the loss of control of the tool and potentially severe
injury.
002449
Blow-out bulb (optional accessory)
After drilling the hole, use the blow-out bulb to clean the dust
out of the hole.
1
1. Blow-out bulb
10
Chipping/Scaling/Demolition
Set the action mode changing knob to the
symbol.
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.
003219
Drilling in wood or metal
Use the optional drill chuck assembly. When installing it, refer
to “Installing or removing the bit” described on the previous
page.
Set the action mode changing knob to “rotation only”.
1
You can drill up to 13 mm (1/2”) diameter in metal and up to
38 mm (1 - 1/2”) diameter in wood. (Note: When using a flat
boring bit.)
1. Drill chuck assembly
CAUTION:
•
•
•
•
•
Never use “rotation with hammering” when the drill
chuck assembly is installed on the tool. The drill chuck
assembly may be damaged. Also, the drill chuck will
come off when reversing the tool.
Pressing excessively on the tool will not speed up the
drilling. In fact, this excessive pressure will only serve to
damage the tip of your bit, decrease the tool
performance and shorten the service life of the tool.
There is a tremendous twisting force exerted on the tool/
bit at the time of hole breakthrough. Hold the tool firmly
and exert care when the bit begins to break through the
workpiece.
A stuck bit can be removed simply by setting the
reversing switch to reverse rotation in order to back out.
However, the tool may back out abruptly if you do not
hold it firmly.
Always secure small workpieces in a vise or similar hold-
down device.
MAINTENANCE
CAUTION:
•
Always be sure that the tool is switched off and
unplugged before attempting to perform inspection or
maintenance.
11
To maintain product SAFETY and RELIABILITY, repairs, car-
bon brush inspection and replacement, any other mainte-
nance or adjustment should be performed by Makita
Authorized or Factory Service Centers, always using Makita
replacement parts.
ACCESSORIES
CAUTION:
•
These accessories or attachments are recommended 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.
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
SDS-Plus Carbide-tipped bits
Bull point
Cold chisel
Chisel adapter assembly
Drill chuck assembly
Drill chuck S13
Chuck adapter
Chuck key S13
Bit grease
Grip assembly
Depth gauge
Blow-out bulb
Dust cup
Dust extractor attachment
Safety goggles
Steel carrying case
12
First-Class
Postage
Required
Post Office will
not deliver
without proper
postage.
Makita U.S.A., Inc.
14930 Northam Street
La Mirada, CA 90638-5753
Fold
MAIL THIS PORTION
Your answers to the following questions are appreciated.
1. This product was purchased from:
3. How did you learn about this product:
Home Center
Other (
)
Magazine
Radio
Hardware/Lumber Store
Tool Distributor
From Dealer
Newspaper
Store Display
Catalog
Exhibition
From Friend
Previous Usage
Other (
Industrial Supply
Construction Supply
)
2. Use of the product is intended for:
4. Most favored points are:
Construction Trade
Industrial Maintenance
Home Maintenance
Hobby
Design
Repair Service
Durability
Power
Features
Size
Price
Other (
)
Other (
)
Makita Brand
5. Any comments:
DATE PURCHASED
MONTH
MODEL NO.
DAY
YEAR
SERIAL NO.
STATUS
SEX
Married Single
M
F
INTL.
LAST NAME / COMPANY NAME
STREET ADRESS
CITY
AREA
CODE
STATE
ZIP CODE
PHONE
40-49
Under 19
20-29
30-39
50-60
Over 60
AGE:
BE SURE TO COMPLETE THE CUSTOMER’S PORTION OF THIS FORM AND RETAIN FOR YOUR RECORDS.
Please return this portion by facsimile or mail.
Facsimile No: (714) 522-8133
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FACTORY SERVICE CENTERS
1-800-4-MAKITA
RETAIN THIS PORTION FOR YOUR RECORDS
ALABAMA
COLORADO
KENTUCKY
NEW MEXICO
PUERTO RICO
2365 Pelham Parkway
Pelham, AL 35124
(205) 620-1791
11839 E. 51st Ave.
Denver, CO 80239-2709
(303) 371-2850
1215 S. Hurstbourne Parkway
Louisville, KY 40222
(502) 326-3740
5805 Menaul Blvd. NE
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(505) 881-4619
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(787) 250-8776
ARIZONA
CONNECTICUT
508 Spring St.
Windsor Locks, CT 06096
(860) 292-6405
LOUSIANA
NEW YORK
TENNESSEE
3707 E. Broadway Rd., Ste. 6
Phoenix, AZ 85040
(602) 437-2850
5626 Jefferson Hwy.
Harahan, LA 70123
(504) 733-4138
4917 Genessee Street
Cheektowaga, NY 14225
(716) 685-9503
4655 Nolensville Rd.
Nashville, TN 37211
(615) 331-9922
131-35 31st Ave.
Flushing, NY 11354
(718) 886-0971
ARKANSAS
FLORIDA
MARYLAND
TEXAS
Shackleford Shopping Center
240 South Shackleford Rd.,
Ste. C
620 Douglas Ave. Suite 1302
Altamonte Springs, FL 32714
(407) 774-6000
7541 - 45 Ritchie Highway
Glen Burnie, MD 21061
(410) 590-0160
12801 Stemmons Fwy Ste. 809
Farmers Branch, TX 75234
(972) 243-1150
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(501) 224-5733
NORTH CAROLINA
3501-G S. Tryon St.
Charlotte, NC 28217
(704) 527-0611
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(954) 781-6333
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(281) 565-8665
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Westwood, MA 02090
(617) 461-9754
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Fremont, CA 94538-5107
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5501 W. Waters Ave., Ste. 406
Tampa, FL 33634
3453 IH-35 North, Ste. 101
San Antonio, TX 78219
(210) 228-0676
OHIO
6253 E. Main St.
Columbus, OH 43213
(614) 860-0222
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MICHIGAN
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GEORGIA
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8403 Michigan Road, Unit 1
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53227
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Suites. 22 - 24
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CUSTOMER’S RECORD
Date Purchased
When you need service: Send
complete tool (prepaid) to one
of the Makita Factory Service
Centers listed, or to an Authorized
Makita Service Center. Be sure
to attach a letter to the outside of
the carton detailing the problem
with your tool.
Dealer’s Name & Address
Model No.
Serial No.
15
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.
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 form 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.
Makita Corporation
3-11-8, Sumiyoshi-cho,
Anjo, Aichi 446-8502 Japan
883824D069
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