Demolition Hammer
MODEL HM1242C
002879
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
Download from Www.Somanuals.com. All Manuals Search And Download.
6. Do not expose power tools to rain or wet
conditions. Water entering a power tool will
increase the risk of electric shock.
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.
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
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.
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.
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
model. Accessories that may be suitable for
one tool, may become hazardous when used
on another tool.
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.
SERVICE
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.
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.
3
Download from Www.Somanuals.com. All Manuals Search And Download.
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.
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
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 seri-
ous 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.
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.
2. Wear ear protectors when using the tool
for extended periods. Prolonged exposure
to high intensity noise can cause hearing
loss.
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-
3. Wear a hard hat (safety helmet), safety
glasses and/or face shield. Ordinary eye
or sun glasses are NOT safety glasses. It
4
Download from Www.Somanuals.com. All Manuals Search And Download.
tion. Without proper warm-up, hammering
operation is difficult.
11. Do not point the tool at any one in the area
when operating. The bit could fly out and
injure someone seriously.
7. Always be sure you have a firm footing.
Be sure no one is below when using the
tool in high locations.
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.
8. Hold the tool firmly with both hands.
9. Keep hands away from moving parts.
13. Some material contains chemicals which
may be toxic. Take caution to prevent dust
inhalation and skin contact. Follow mate-
rial supplier safety data.
10. Do not leave the tool running. Operate the
tool only when hand-held.
SAVE THESE INSTRUCTIONS
WARNING:
MISUSE or failure to follow the safety rules stated in this
instruction manual may cause serious personal injury.
SYMBOLS
USD203-2
The followings show the symbols used for tool.
V .......................volts
....................Class II Construction
A .......................amperes
.../min................revolutions or reciprocation per
minute
Hz .....................hertz
................number of blow
................alternating current
5
Download from Www.Somanuals.com. All Manuals Search And Download.
FUNCTIONAL
DESCRIPTION
CAUTION:
•
Always be sure that the tool is switched off and
unplugged before adjusting or checking function on the
tool.
002889
Switch action
CAUTION:
1
•
Before plugging in the tool, always check to see that the
tool is switched off.
•
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 lever
To start the tool, push the switch lever on the left side of the
tool. To stop the tool, push the switch lever on the right side
of the tool.
002897
Speed change
The blows per minute can be adjusted just by turning the
adjusting dial. This can be done even while the tool is run-
ning. 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 blows per
minute.
1
1. Adjusting dial
Number
on adjusting dial
Blows
per minute
1,900
1,800
1,550
1,300
1,050
950
6
5
4
3
2
1
CAUTION:
•
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.
6
Download from Www.Somanuals.com. All Manuals Search And Download.
002899
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 cir-
cuit 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.
1
2
The red service indicator lamp lights up when the carbon
brushes are nearly worn out to indicate that the tool needs
servicing. After approx. 8 hours of use, the motor will auto-
matically be shut off.
1. Power-ON indicator lamp(green)
2. Service indicator lamp(red)
ASSEMBLY
CAUTION:
•
Always be sure that the tool is switched off and
unplugged before carrying out any work on the tool.
002906
Side handle (auxiliary handle)
1
The side handle can be swung 360° on the vertical and
secured at any desired position. It also secures at eight dif-
ferent 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.
2
1. Side handle
2. Clamp nut
002907
The side handle also can be mounted in the rear groove.
Loosen the clamp nut and widen the side handle base. Slide
the side handle back to the rear groove and secure it with the
clamp nut.
1
2
1. Side handle base
2. Clamp nut
7
Download from Www.Somanuals.com. All Manuals Search And Download.
002919
Installing or removing the bit
This tool accepts 3/4” Hexagonal and 21/32” round shank
bits.
Clean the bit shank and apply bit grease before installing the
bit.
2
1
1. Bit grease
2. Bit shank
002920
Pull the tool holder cover down all the way. With the cut in the
bit shank aligned with the notch in the tool holder cap, insert
the bit into the tool holder.
1
2
4
3
Release the tool holder cover. It will return automatically to
its original position to secure the bit. After installing, always
make sure that the bit is securely held in place by trying to
pull it out.
1. Bit
2. Tool holder cover
3. Tool holder cap
4. Notch
002921
To remove the bit, pull the tool holder cover down all the way
and pull the bit out.
002940
Bit angle
The bit can be secured at 12 different angles. To change the
bit angle, slide the change ring forward, then turn the change
ring to change the bit angle. At the desired angle, slide the
change ring back to the original position. The bit will be
secured in place.
1
NOTE:
1. Change ring
•
The change ring cannot turn when the bit is not installed
on the tool.
8
Download from Www.Somanuals.com. All Manuals Search And Download.
OPERATION
002945
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.
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.
2
3
1
1. Commutator
2. Insulating tip
3. Carbon brush
002953
Remove the screws which secure the rear cover. Pry up the
rear cover with a screwdriver and remove it.
1
2
3
1. Screwdriver
2. Rear cover
3. Screws
9
Download from Www.Somanuals.com. All Manuals Search And Download.
002954
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.
1
2
1. Screwdriver
2. Brush holder cap
002967
Lubrication
This tool requires no hourly or daily lubrication because it
has a grease-packed lubrication system. It should be relubri-
cated 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.
1
1. Screws
Run the tool for several minutes to warm it up. Switch off and
unplug the tool.
002968
Loosen the six screws and remove the handle.
1
Remove the crank cap using a socket wrench. Rest the tool
on the table with the bit end pointing upwards. This will allow
the old grease to collect inside the crank housing.
2
1. Socket wrench
2. Crank cap
002969
Wipe out the old grease inside and replace with a fresh
grease (30 g; 1 oz). Use only Makita genuine hammer
grease (optional accessory). Filling with more than the speci-
fied amount of grease (approx. 30 g; 1 oz) can cause faulty
hammering action or tool failure. Fill only with the specified
amount of grease.
1
Reinstall the crank cap and tighten with the socket wrench.
1. Hammer grease
CAUTION:
•
•
Do not tighten the crank cap excessively. It is made of
resin and is subject to breakage.
Be careful not to damage the terminals or lead wires
especially when wiping out the old grease or installing
the handle.
10
Download from Www.Somanuals.com. All Manuals Search And Download.
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.
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.
•
•
•
•
•
•
•
•
•
•
•
Bull point
Cold chisel
Scaling chisel
Clay spade
Grooving chisel
Rammer
Bushing tool
Safety goggles
Hammer grease
Bit grease
Plastic carrying case
11
Download from Www.Somanuals.com. All Manuals Search And Download.
Memo
12
Download from Www.Somanuals.com. All Manuals Search And Download.
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
Download from Www.Somanuals.com. All Manuals Search And Download.
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
Download from Www.Somanuals.com. All Manuals Search And Download.
Paste
Paste
Paste
Paste
Paste
Paste
Paste
Paste
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
Albuquerque, NM 87110
(505) 881-4619
200 Guayama St.
Hato Rey, PR 00917
(787) 250-8776
ARIZONA
CONNECTICUT
508 Spring St.
Windsor Locks, CT 06096
(860) 292-6405
LOUSIANA
NEWYORK
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
Little Rock, AR 72211
(501) 224-5733
NORTH CAROLINA
3501-G S. Tryon St.
Charlotte, NC 28217
(704) 527-0611
750 East Sample Road
Pompano Beach, FL 33064
(954) 781-6333
12701 Directors Dr.
Stafford, TX 77477-3701
(281) 565-8665
MASSACHUSETTS
232 Providence Hwy.
Westwood, MA 02090
(617) 461-9754
CALIFORNIA
41850 Christy St.
Fremont, CA 94538-5107
(510) 657-9881
Thompson Center Waters
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
(813) 886-8292
MICHIGAN
1421 N. Clovis Ave., Ste. 112
Fresno, CA 93727
(559) 252-5166
37454 Ann Arbor Trail
Livonia, MI 48150
(313) 432-1012
UTAH
GEORGIA
6379 Pearl Road
Parma Heights, OH 44130
(440) 843-7555
145 E. 1300 S., Ste. 101
Salt Lake City, UT 84115
(801) 359-3410
4680 River Green Parkway
Duluth, GA 30096-2566
(770) 476-8911
14930 Northam St.
La Mirada, CA 90638-5753
(714) 522-8088
MINNESOTA
6427 Penn Ave. South
Richfield, MN 55423
(612) 869-5199
1617 E. Kemper Rd.
Sharonville, OH 45246
(513) 771-0788
VIRGINIA
5760 Northampton Blvd,. Ste.
102
Virginia Beach, VA 23455
(757) 460-0280
1970 Fulton Avenue
Sacramento, CA 95825
(916) 482-5197
HAWAII
4510 Salt Lake Blvd., Suite A7
Honolulu, HI 96818
(808) 847-0038
MISSOURI
OKLAHOMA
1440 South “E” Street
San Bernardino, CA 92408
(909) 885-1289
9876 Watson Road
St. Louis, MO 63126-2221
(314) 909-9889
552 E. Memorial Road
Oklahoma City, OK 73114
(405) 752-2655
ILLINOIS
WASHINGTON
1450 Feehanville Dr.
Mt. Prospect, IL 60056-6011
(847) 297-3100
22220 84th Ave. So., Bldg. A
Kent, WA 98032
(253) 395-8055
7674 Clairemont Mesa Blvd.
San Diego, CA 92111
(858) 278-4471
NEBRASKA
OREGON
4129 S. 84th St.
Omaha, NE 68127
(402) 597-2925
828 19th Avenue., N.W.
Portland, OR 97209
(503) 222-1823
1714 E.McFadden Ave., Unit M
Santa Ana, CA 92705
(714) 667-5066
INDIANA
WISCONSIN
8403 Michigan Road, Unit 1
Indianapolis, IN 46268
(317) 334-9980
Lincoln Plaza Shopping Ctr.
2245 S. 108th St. West Allis, WI
53227
NEVADA
3375 S. Decatur Blvd.
Suites. 22 - 24
Las Vegas, NV 89102
(702) 368-4277
PENNSYLVANIA
Springwater Plaza
364 Wilmington W. Chester
Pike
Glen Mills, PA 19342
(610) 459-4122
1565 Winchester B.
Campbell, CA 95008-0501
(408) 379-0377
(414) 541-4776
KANSAS
8819 W. 95th St.
Overland Park, KS 66212
(913) 642-1111
16735 Saticoy St., Ste. 105
Van Nuys, CA 91406
(818) 782-2440
NEW JERSEY
6200 Babcock Blvd
Pittsburgh, PA 15237
(412) 366-6363
251 Herrod Blvd.
Dayton, NJ 08810-1539
(609) 655-1212
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
Download from Www.Somanuals.com. All Manuals Search And Download.
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
884290B063
Download from Www.Somanuals.com. All Manuals Search And Download.
|