Makita HR4000C User Manual

Rotary Hammer

40 mm (1-9/16”)
MODEL HR4000C

DOUBLE
INSULATION

INSTRUCTION MANUAL

WARNING:

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

www.makitatools.com

003099

SPECIFICATIONS

Model HR4000C

Capacities

No load speed (RPM) 230 - 450/min.

Blows per minute 1,250 - 2,500

Overall length 455 mm (17-7/8”)

Net weight 6.2 kg (13.6 lbs)

• Manufacturer reserves the right to change specifications without notice.

• Specifications may differ from country to country.

Carbide-tipped bit 40 mm (1-9/16”)

Core bit 105 mm (4-1/8”)

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

3.

Work A re a

1.

Keep your work area clean and well lit.

Cluttered benches and dark areas invite acci­dents.

2.

Do not operate power tools in explosive
atmospheres, such as in the presence of
flammable liquids, gases, or dust. Powe r

tools create sparks which may ignite the dust
or fumes.

Keep bystanders, children, and visitors
away while operating a power tool. Distrac-

tions 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

2

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 inattention 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.

Tool Use and Care

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.

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 accidents 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.

3

24.

SERVICE

23.

Tool service must be performed only by
qualified repair personnel. Service or main-

tenance performed by unqualified personnel
could result in a risk of injury.

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.

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

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

Volts Total length of cord in feet

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

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.

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

4

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

11.

warm up for a while by operating it under
no load. This will loosen up the lubrica­tion. Without proper warm-up, 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.

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

USD202-2

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

n

˚

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

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

minute

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

5

FUNCTIONAL
DESCRIPTION

003112

Switch action

CAUTION:

• Always be sure that the tool is switched off and
unplugged before adjusting or checking function on the
tool.

1. Switch trigger

1

1. Adjusting dial

1

CAUTION:

• Before plugging in the tool, always check to see that the
switch trigger actuates properly and returns to the “OFF”
position when released.

To start the tool, simply pull the switch trigger. Release the
switch trigger to stop.

003119

Speed change

The revolutions and blows per minute can be adjusted just by
turning the adjusting dial. The dial is marked 1 (lowest
speed) to 6 (full speed).
Refer to the table below for the relationship between the
number settings on the adjusting dial and the revolutions/
blows per minute.

Number on adjusting dial

6
5
4
3
2
1

Revolutions per minute

450
430
370
310
250
230

CAUTION:

• If the tool is operated continuously at low speeds for a
long time, the motor will get overloaded, resulting in tool
malfunction.

• The speed adjusting dial can be turned only as far as 6
and back to 1. Do not force it past 6 or 1, or the speed
adjusting function may no longer work.

Blows per minute

2,500
2,350
2,050
1,700
1,400
1,250

6

12

3

1. Change lever

2. Pointer

3. Lock button

12

1. Pointer

2. Change lever

003130

Selecting the action mode

Rotation with hammering

For drilling in concrete, masonry, etc., depress the lock but­ton and rotate the change lever so that the pointer points to
the symbol. Use a tungsten-carbide tipped bit.

003135

Hammering only

For chipping, scaling or demolition operations, depress the
lock button and rotate the change lever so that the pointer
points to the symbol. Use a bull point, cold chisel, scaling
chisel, etc.

CAUTION:

• Do not rotate the change lever when the tool is running
under load. The tool will be damaged.

• To avoid rapid wear on the mode change mechanism, be
sure that the change lever is always positively located in
one of the two action mode positions.

Torque l imit er

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.

003138

2

1

1. Service indicator lamp (red)

2. Power-ON indicator lamp (green)

CAUTION:

• As soon as the torque limiter actuates, switch off the tool
immediately. This will help prevent premature wear of the
tool.

Indicator lamp

The green power-ON indicator lamp lights up when the tool is
switched ON. If the indicator lamp is lit but the tool does not
start, the carbon brushes may be worn out, or the electric cir­cuit or the motor may be defective. If the indicator lamp does
not light up and the tool does not start, the ON/OFF switch or
the mains cord may be defective.
The red service indicator lamp lights up when the carbon
brushes are nearly worn out to indicate that the tool needs

7

servicing. After approx. 8 hours of use, the motor will auto­matically be shut off.

ASSEMBLY

1

2

1. Side handle

2. Clamp nut

1

1. Side grip

CAUTION:

• Always be sure that the tool is switched off and
unplugged before carrying out any work on the tool.

003139

Side handle

CAUTION:

• Use the side handle only when chipping, scaling or
demolishing. Do not use it when drilling in concrete,
masonry, etc. The tool cannot be held properly with this
side handle when drilling.

The side handle can be swung 360° on the vertical and

003581

secured at any desired position. It also secures at eight dif­ferent positions back and forth on the horizontal. Just loosen
the clamp nut to swing the side handle to a desired position.
Then tighten the clamp nut securely.

003147

Side grip

CAUTION:

• Always use the side grip to ensure operating safety
when drilling in concrete, masonry, etc.

The side grip swings around to either side, allowing easy
handling of the tool in any position. Loosen the side grip by
turning it counterclockwise, swing it to the desired position
and then tighten it by turning clockwise.

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 lubri­cation assures smooth action and longer service life.

8

1

1. Bit shank

2. Bit grease

1

2

1. Bit

2. Chuck cover

003150

Installing or removing the bit

2

Clean the bit shank and apply bit grease before installing the
bit.

003161

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.

After installing, always make sure that the bit is securely held
in place by trying to pull it out.

003168

To remove the bit, pull the chuck cover down all the way and
pull the bit out.

1

2

1. Bit

2. Chuck cover

1. Lock button

2. Change lever

3. Pointer

4. “O” symbol

003172

1

2

Bit angle (when chipping, scaling or demolishing)

The bit can be secured at 12 different angles. To change the
bit angle, depress the lock button and rotate the change lever
so that the pointer points to the “O” symbol. Turn the bit to

3
4

the desired angle.

9

1

2

1. Change lever

2. Pointer

2

1

1. Depth gauge

2. Clamp screw

OPERATION

003176

Depress the lock button and rotate the change lever so that
the pointer points to the symbol. Then make sure that the
bit is securely held in place by turning it slightly.

003184

Depth gauge

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.

NOTE:

• The depth gauge cannot be used at the position where
the depth gauge strikes against the tool body.

003200

Hammer drilling operation

Set the change lever 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 slip­ping 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 sev­eral times, the hole will be cleaned out and normal drilling
may be resumed.

10

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.

1. Blow-out bulb

1

002449

Blow-out bulb (optional accessory)

After drilling the hole, use the blow-out bulb to clean the dust
out of the hole.

003206

Chipping/Scaling/Demolition

Set the change lever 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.

MAINTENANCE

2

1

3

1. Commutator

2. Insulating tip

3. Carbon brush

1

2

1. Screwdriver

2. Brush holder cover

CAUTION:

• Always be sure that the tool is switched off and
unplugged before attempting to perform inspection or
maintenance.

001146

Replacing carbon brushes

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.

003226

Use a screwdriver to remove the brush holder cover.

11

1

2

1. Screwdriver

2. Brush holder cap

1

1. Screws

003232

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.

Lubrication

CAUTION:

• This servicing should be performed by Makita
Authorized or Factory Service Centers only.

003237

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.

Loosen the six screws and remove the handle. Note that the
top screws are different from other screws.

003240

Disconnect the two terminals (white and black) by pulling

1

them.

23

1. Black

2. Terminals

3. White

12

1. Hex wrench

2. Crank cap

1

1. Hammer grease

1. Terminals

2. White

3. Black

003243

Remove the crank cap using a hex wrench. Rest the tool on

1

the table with the bit end pointing upwards. This will allow the
old grease to collect inside the crank housing.

2

003247

Wipe out the old grease inside and replace with a 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.

Reinstall the crank cap and tighten with the hex wrench.

003249

Connect the two terminals and reinstall the handle.

CAUTION:

1

• Do not tighten the crank cap excessively. It is made of
resin and is subject to breakage.

3

2

• Be careful not to damage the terminals or lead wires
especially when wiping out the old grease or installing
the handle.

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.

13

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-Max Carbide-tipped bits

• Bull point

• Cold chisel

• Scaling chisel

• Scraping chisel

• Clay spade

• Hammer grease

• Bit grease

• Side handle

• Side grip

• Depth gauge

• Blow-out bulb

• Safety goggles

• Plastic carrying case

14

Memo

15

Memo

16

Cut

Makita U.S.A., Inc.

14930 Northam Street
La Mirada, CA 90638-5753

Fold

First-Class

Postage

Required

Post Office will

not deliver

without proper

postage.

17

MAIL THIS PORTION

Your answers to the following questions are appreciated.

1. This product was purchased from:

Home Center

Hardware/Lumber Store

Tool Distributor

Industrial Supply

Construction Supply

2. Use of the product is intended for:

Construction Trade

Industrial Maintenance

Home Maintenance

Hobby

Other ( )

5. Any comments:

DATE PURCHASED MODEL NO.

MONTH DAY YEAR

INTL. LAST NAME / COMPANY NAME

Other ( )

3. How did you learn about this product:

4. Most favored points are:

SERIAL NO.

Magazine

From Dealer

Newspaper

Store Display

Catalog

Design

Features

Size

Price

Makita Brand

Radio

Exhibition

From Friend

Previous Usage

Other ( )

Repair Service

Durability

Powe r

Other ( )

STATUS

Married

Single

SEX

MF

STREET ADRESS

CITY

AREA

S TATE

AGE:

BE SURE TO COMPLETE THE CUSTOMER’S PORTION OF THIS FORM AND RETAIN FOR YOUR RECORDS.

Paste Paste Paste Paste Paste Paste

18

Please return this portion by facsimile or mail.

Facsimile No: [phone]

ZIP CODE PHONE

Under 19 20-29 30-39 40-49 50-60 Over 60

CODE

Paste Paste Paste Paste Paste Paste Paste Paste

Paste Paste Paste Paste Paste Paste

FACTORY SERVICE CENTERS

1-800-4-MAKITA

RETAIN THIS PORTION FOR YOUR RECORDS

ARIZONA

3707 E. Broadway Rd., Ste. 6
Phoenix, AZ 85040
[phone]

CALIFORNIA

41850 Christy St.
Fremont, CA 94538-5107
[phone]

14930 Northam St.
La Mirada, CA 90638-5753
[phone]

1970 Fulton Avenue
Sacramento, CA 95825
[phone]

7674 Clairemont Mesa Blvd.
San Diego, CA 92111
[phone]

16735 Saticoy St., Ste. 105
Van Nuys, CA 91406
[phone]

COLORADO

11839 E. 51st Ave.
Denver, CO 80239-2709
[phone]

FLORIDA

750 East Sample Road
Pompano Beach, FL 33064
[phone]

GEORGIA

4680 River Green Parkway NW
Duluth, GA 30096
[phone]

ILLINOIS

1450 Feehanville Dr.
Mt. Prospect, IL 60056-6011
[phone]

MARYLAND

7397 Washington Boulevard,
Suite 104 Elkridge, MD 21075
[phone]

MASSACHUSETTS

232 Providence Hwy.
Westwood, MA 02090
[phone]

MINNESOTA

6427 Penn Ave. South
Richfield, MN 55423
[phone]

MISSOURI

9876 Watson Road
St. Louis, MO 63126-2221
[phone]

NEBRASKA

4129 S. 84th St.
Omaha, NE 68127
[phone]

NEVADA

3375 S. Decatur Blvd.
Suites. 22 - 24
Las Vegas, NV 89102
[phone]

NEW JERSEY

251 Herrod Blvd.
Dayton, NJ 08810-1539
[phone]

NEW YORK

4917 Genessee Street
Cheektowaga, NY 14225
[phone]

OREGON

828 19th Avenue, N.W.
Portland, OR 97209
[phone]

PENNSYLVANIA

1704 Babcock Blvd.
Pittsburgh, PA 15209
[phone]

PUERTO RICO

200 Guayama St.
Hato Rey, PR 00917
[phone]

TENNESSEE

1120 Elm Hill P.
Suile 170 Nashville, TN 372
[phone]

TEXAS

12801 Stemmons Fwy Ste. 809
Farmers Branch, TX 75234
[phone]

12701 Directors Dr.
Stafford, TX 77477-3701
[phone]

3453 IH-35 North, Ste. 101
San Antonio, TX 78219
[phone]

WISCONSIN

Lincoln Plaza Shopping Ctr.
2245 S. 108th St. West Allis, WI
53227
[phone]

CUSTOMER’S RECORD

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.

Date Purchased

Dealer’s Name & Address

Model No.

Serial No.

19

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 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.

884094D063

Makita Corporation

3-11-8, Sumiyoshi-cho,

Anjo, Aichi 446-8502 Japan