Makita DHR242 User manual

1
GB Cordless Combination Hammer INSTRUCTION MANUAL
UA
Багаторежимний бездротовий бурильний молоток ІНСТРУКЦІЯ ЗЕКСПЛУАТАЦІЇ
PL Młotowiertarka Akumulatorowa INSTRUKCJA OBSŁUGI
RO Ciocan combinat cu acumulatori MANUAL DE INSTRUCŢIUNI
DE Akku-Kombi-Bohrhammer BEDIENUNGSANLEITUNG
HU Akkumulátoros kombikalapács HASZNÁLATI KÉZIKÖNYV
SK
Akumulátorové kombinované kladivo NÁVOD NA OBSLUHU
CZ
Akumulátorové kombinované vrtací kladivo NÁVOD K OBSLUZE
DHR242
DHR243

2
1
2
3
1 012622
1
2 012128
1
3 012627
1
AB
4 012628
12
3
5 012690
1
2
34
6 012689
1
23
7 012629
1
8 012631
1
9 012630
1
2
34
5
10 012623
1
2
11 001296
2
1
12 012624
1
2
13 012625
1
2
14 012632 15 012633

3
1
234
16 012626
1
17 012636 18 012634
1
19 002449 20 012686
1
2
21 012684
1
2
22 012685
12
3
23 012690
1
2
34
24 012689
1
23
25 012720

4
ENGLISH (Original instructions)
Explanation of general view
1-1. Red indicator
1-2. Button
1-3. Battery cartridge
2-1. Star marking
3-1. Switch trigger
4-1. Reversing switch lever
5-1. Quick change chuck for SDS-plus
5-2. Change cover line
5-3. Change cover
6-1. Spindle
6-2. Quick change drill chuck
6-3. Change cover
6-4. Change cover line
7-1. Rotation with hammering
7-2. Lock button
7-3. Action mode changing knob
8-1. Rotation only
9-1. Hammering only
10-1. Protrusion
10-2. Groove
10-3. Loosen
10-4. Tighten
10-5. Side grip
11-1. Bit shank
11-2. Bit grease
12-1. Bit
12-2. Chuck cover
13-1. Bit
13-2. Chuck cover
14-1. Action mode changing knob
14-2. O symbol
16-1. Hole
16-2. Depth gauge
16-3. Loosen
16-4. Tighten
17-1. Dust cup
19-1. Blow-out bulb
21-1. Chuck adapter
21-2. Keyless drill chuck
22-1. Sleeve
22-2. Ring
23-1. Quick change chuck for SDS-plus
23-2. Change cover line
23-3. Change cover
24-1. Spindle
24-2. Quick change drill chuck
24-3. Change cover
24-4. Change cover line
25-1. Quick change drill chuck
25-2. Sleeve
25-3. Ring
SPECIFICATIONS
Model DHR242 DHR243
Concrete 24 mm
Steel 13 mm
Capacities
Wood 27 mm
No load speed (min-1) 0 - 950
Blows per minute 0 - 4,700
Overall length 328 mm 353 mm
Net weight 3.3 kg 3.4 kg
Rated voltage D.C. 18 V
• Due to our continuing program of research and development, the specifications herein are subject to change without notice.
• Specifications and battery cartridge may differ from country to country.
• Weight, with battery cartridge, according to EPTA-Procedure 01/2003
ENE043-1
Intended use
The tool is intended for hammer drilling and drilling in
brick, concrete and stone as well as for chiselling work.
It is also suitable for drilling without impact in wood, metal,
ceramic and plastic.
ENG905-1
Noise
The typical A-weighted noise level determined according
to EN60745:
Model DHR242
Sound pressure level (LpA) : 90 dB (A)
Sound power level (LWA) : 101 dB (A)
Uncertainty (K) : 3 dB (A)
Model DHR243
Sound pressure level (LpA) : 89 dB (A)
Sound power level (LWA) : 100 dB (A)
Uncertainty (K) : 3 dB (A)
Wear ear protection
ENG900-1
Vibration
The vibration total value (tri-axial vector sum) determined
according to EN60745:
Model DHR242
Work mode : hammer drilling into concrete
Vibration emission (ah,HD) : 13.5 m/s2
Uncertainty (K) : 1.5 m/s2
Work mode : chiselling
Vibration emission (ah,CHeq) : 10.5 m/s2
Uncertainty (K) : 1.5 m/s2
Work mode: drilling into metal
Vibration emission (ah,D) : 3.5 m/s2
Uncertainty (K) : 1.5 m/s2

5
Model DHR243
Work mode : hammer drilling into concrete
Vibration emission (ah,HD) : 13 m/s2
Uncertainty (K) : 1.5 m/s2
Work mode : chiselling
Vibration emission (ah,CHeq) : 11 m/s2
Uncertainty (K) : 1.5 m/s2
Work mode: drilling into metal
Vibration emission (ah,D) : 2.5 m/s2or less
Uncertainty (K) : 1.5 m/s2
ENG901-1
• The declared vibration emission value has been
measured in accordance with the standard test
method and may be used for comparing one tool
with another.
• The declared vibration emission value may also be
used in a preliminary assessment of exposure.
WARNING:
• The vibration emission during actual use of the
power tool can differ from the declared emission
value depending on the ways in which the tool is
used.
• Be sure to identify safety measures to protect the
operator that are based on an estimation of
exposure in the actual conditions of use (taking
account of all parts of the operating cycle such as
the times when the tool is switched off and when it
is running idle in addition to the trigger time).
ENH101-17
For European countries only
EC Declaration of Conformity
Makita declares that the following Machine(s):
Designation of Machine:
Cordless Combination Hammer
Model No./ Type: DHR242, DHR243
Conforms to the following European Directives:
2006/42/EC
They are manufactured in accordance with the following
standard or standardized documents:
EN60745
The technical file in accordance with 2006/42/EC is
available from:
Makita, Jan-Baptist Vinkstraat 2, 3070, Belgium
31.12.2013
000331
Yasushi Fukaya
Director
Makita, Jan-Baptist Vinkstraat 2, 3070, Belgium
GEA010-1
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.
GEB046-2
CORDLESS ROTARY HAMMER
SAFETY WARNINGS
1. Wear ear protectors. Exposure to noise can
cause hearing loss.
2. Use auxiliary handle(s), if supplied with the
tool. Loss of control can cause personal injury.
3. Hold power tool by insulated gripping
surfaces, when performing an operation
where the cutting accessory may contact
hidden wiring. Cutting accessory contacting a
"live" wire may make exposed metal parts of the
power tool "live" and could give the operator an
electric shock.
4. 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.
5. Be sure the bit is secured in place before
operation.
6. 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.
7. 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 lubrication. Without proper
warm-up, hammering operation is difficult.
8. Always be sure you have a firm footing.
Be sure no one is below when using the tool in
high locations.
9. Hold the tool firmly with both hands.
10. Keep hands away from moving parts.
11. Do not leave the tool running. Operate the tool
only when hand-held.
12. Do not point the tool at any one in the area
when operating. The bit could fly out and
injure someone seriously.
13. Do not touch the bit or parts close to the bit
immediately after operation; they may be
extremely hot and could burn your skin.

6
14. 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:
DO NOT let comfort or familiarity with product
(gained from repeated use) replace strict adherence
to safety rules for the subject product. MISUSE or
failure to follow the safety rules stated in this
instruction manual may cause serious personal
injury.
ENC007-7
IMPORTANT SAFETY
INSTRUCTIONS
FOR BATTERY CARTRIDGE
1. Before using battery cartridge, read all
instructions and cautionary markings on (1)
battery charger, (2) battery, and (3) product
using battery.
2. Do not disassemble battery cartridge.
3. If operating time has become excessively
shorter, stop operating immediately. It may
result in a risk of overheating, possible burns
and even an explosion.
4. If electrolyte gets into your eyes, rinse them
out with clear water and seek medical
attention right away. It may result in loss of
your eyesight.
5. Do not short the battery cartridge:
(1) Do not touch the terminals with any
conductive material.
(2) Avoid storing battery cartridge in a
container with other metal objects such as
nails, coins, etc.
(3) Do not expose battery cartridge to water
or rain.
A battery short can cause a large current flow,
overheating, possible burns and even a
breakdown.
6. Do not store the tool and battery cartridge in
locations where the temperature may reach or
exceed 50 ﾟC (122 ﾟF).
7. Do not incinerate the battery cartridge even if
it is severely damaged or is completely worn
out. The battery cartridge can explode in a fire.
8. Be careful not to drop or strike battery.
9. Do not use a damaged battery.
SAVE THESE INSTRUCTIONS.
Tips for maintaining maximum battery life
1. Charge the battery cartridge before
completely discharged.
Always stop tool operation and charge the
battery cartridge when you notice less tool
power.
2. Never recharge a fully charged battery
cartridge.
Overcharging shortens the battery service life.
3. Charge the battery cartridge with room
temperature at 10 ﾟC - 40 ﾟC (50 ﾟF - 104 ﾟF).
Let a hot battery cartridge cool down before
charging it.
4. Charge the battery cartridge once in every six
months if you do not use it for a long period of
time.

7
FUNCTIONAL DESCRIPTION
CAUTION:
• Always be sure that the tool is switched off and the
battery cartridge is removed before adjusting or
checking function on the tool.
Installing or removing battery cartridge
CAUTION:
• Hold the tool and the battery cartridge firmly
when installing or removing battery cartridge.
Failure to hold the tool and the battery cartridge
firmly may cause them to slip off your hands and
result in damage to the tool and battery cartridge
and a personal injury.
Fig.1
• Always switch off the tool before installing or
removing of the battery cartridge.
• To remove the battery cartridge, slide it from the
tool while sliding the button on the front of the
cartridge.
• To install the battery cartridge, align the tongue on the
battery cartridge with the groove in the housing and
slip it into place. Always insert it all the way until it
locks in place with a little click. If you can see the red
indicator on the upper side of the button, it is not
locked completely. Install it fully until the red indicator
cannot be seen. If not, it may accidentally fall out of
the tool, causing injury to you or someone around you.
• Do not use force when installing the battery
cartridge. If the cartridge does not slide in easily, it
is not being inserted correctly.
Battery protection system
(Lithium-ion battery with star marking)
Fig.2
Lithium-ion batteries with a star marking are equipped
with a protection system. This system automatically cuts
off power to the tool to extend battery life.
The tool will automatically stop during operation if the tool
and/or battery are placed under one of the following
conditions:
• Overloaded:
The tool is operated in a manner that causes
it to draw an abnormally high current.
In this situation, release the trigger switch on
the tool and stop the application that caused
the tool to become overloaded. Then pull the
trigger switch again to restart.
If the tool does not start, the battery is
overheated. In this situation, let the battery
cool before pulling the trigger switch again.
• Low battery voltage:
The remaining battery capacity is too low and
the tool will not operate. In this situation,
remove and recharge the battery.
Switch action
Fig.3
CAUTION:
• Before inserting the battery cartridge into 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. Tool speed
is increased by increasing pressure on the switch trigger.
Release the switch trigger to stop.
Reversing switch action
Fig.4
This tool has a reversing switch to change the direction of
rotation. Depress the reversing switch lever from the A
side for clockwise rotation or from the B side for
counterclockwise rotation.
When the reversing switch lever is in the neutral position,
the switch trigger cannot be pulled.
CAUTION:
• Always check the direction of rotation before
operation.
• 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.
• When not operating the tool, always set the
reversing switch lever to the neutral position.
Changing the quick change chuck for
SDS-plus
For model DHR243
The quick change chuck for SDS-plus can be easily
exchanged for the quick change drill chuck.
Removing the quick change chuck for SDS-plus
Fig.5
CAUTION:
• Before removing the quick change chuck for
SDS-plus, always remove the bit.
Grasp the change cover of the quick change chuck for
SDS-plus and turn in the direction of the arrow until the
change cover line moves from the symbol to the
symbol. Pull forcefully in the direction of the arrow.
Attaching the quick change drill chuck
Fig.6
Check the line of the quick change drill chuck shows the
symbol. Grasp the change cover of the quick change
drill chuck and set the line to the symbol.
Place the quick change drill chuck on the spindle of the
tool.
Grasp the change cover of the quick change drill chuck
and turn the change cover line to the symbol until a
click can clearly be heard.

8
Selecting the action mode
Rotation with hammering
Fig.7
For drilling in concrete, masonry, etc., depress the lock
button and rotate the action mode changing knob to the
symbol. Use a tungsten-carbide tipped bit.
Rotation only
Fig.8
For drilling in wood, metal or plastic materials, depress
the lock button and rotate the action mode changing
knob to the symbol. Use a twist drill bit or wood bit.
Hammering only
Fig.9
For chipping, scaling or demolition operations, depress
the lock button and rotate the action mode changing
knob to the symbol. Use a bull point, cold chisel,
scaling chisel, etc.
CAUTION:
• Do not rotate the action mode changing knob when
the tool is running. The tool will be damaged.
• To avoid rapid wear on the mode change
mechanism, be sure that the action mode changing
knob is always positively located in one of the three
action mode positions.
• When changing from the symbol mode to the
symbol mode, the action mode changing knob
may no longer move in the symbol position. At
this time, turn the tool on or turn the chuck by hand
in the symbol position and then rotate the
action mode changing knob. Forcing the action
mode changing knob may cause tool damage.
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 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 the
battery cartridge is removed before carrying out
any work on the tool.
Side grip (auxiliary handle)
Fig.10
CAUTION:
• Always use the side grip to ensure operating safety.
Install the side grip so that the protrusion on the grip fit in
between the grooves in the tool barrel. Then tighten the
grip by turning clockwise at the desired position. It may
be swung 360° so as to be secured at any position.
Bit grease
Coat the bit shank head beforehand with a small amount
of bit grease (about 0.5 -1 g). This chuck lubrication
assures smooth action and longer service life.
Installing or removing the bit
Clean the bit shank and apply bit grease before installing
the bit.
Fig.11
Insert the bit into the tool. Turn the bit and push it in until it
engages.
Fig.12
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.
To remove the bit, pull the chuck cover down all the way
and pull the bit out.
Fig.13
Bit angle
(when chipping, scaling or demolishing)
Fig.14
The bit can be secured at the desired angle. To change
the bit angle, depress the lock button and rotate the
action mode changing knob to the Osymbol. Turn the bit
to the desired angle.
Depress the lock button and rotate the action mode
changing knob to the symbol. Then make sure that the
bit is securely held in place by turning it slightly.
Fig.15
Depth gauge
Fig.16
The depth gauge is convenient for drilling holes of
uniform depth. Loosen the side grip and insert the depth
gauge into the hole in the side grip. Adjust the depth
gauge to the desired depth and tighten the side grip.
NOTE:
• The depth gauge cannot be used at the position
where the depth gauge strikes against the gear
housing.

9
Dust cup
Fig.17
Use the dust cup to prevent dust from falling over the tool
and on yourself when performing overhead drilling
operations. 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.
Bit diameter
Dust cup 5 6 mm - 14.5 mm
Dust cup 9 12 mm - 16 mm
006382
OPERATION
Hammer drilling operation
Fig.18
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 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.
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.
NOTE:
Eccentricity in the bit rotation may occur while operating
the tool with no load. The tool automatically centers itself
during operation. This does not affect the drilling precision.
Blow-out bulb (optional accessory)
Fig.19
After drilling the hole, use the blow-out bulb to clean the
dust out of the hole.
Chipping/Scaling/Demolition
Fig.20
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.
Drilling in wood or metal
Fig.21
Fig.22
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 so that the pointer
points to the symbol.
For model DHR243
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.
Fig.23
Fig.24
Use the quick change drill chuck as standard equipment.
When installing it, refer to "changing the quick change
chuck for SDS-plus " described on the previous page.
Fig.25
Hold the ring and turn the sleeve counterclockwise to
open the chuck jaws. Place the bit in the chuck as far as it
will go. Hold the ring firmly and turn the sleeve clockwise
to tighten the chuck. To remove the bit, hold the ring and
turn the sleeve counterclockwise.
Set the action mode changing knob to the symbol.
You can drill up to 13 mm diameter in metal and up to 32
mm diameter in wood.
CAUTION:
• Never use "rotation with hammering" when the
quick change drill chuck is installed on the tool. The
quick change drill chuck 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.

10
MAINTENANCE
CAUTION:
• Always be sure that the tool is switched off and the
battery cartridge is removed before attempting to
perform inspection or maintenance.
• Never use gasoline, benzine, thinner, alcohol or the
like. Discoloration, deformation or cracks may
result.
To maintain product SAFETY and RELIABILITY, repairs,
carbon brush inspection and replacement, any other
maintenance or adjustment should be performed by
Makita Authorized Service Centers, always using Makita
replacement parts.
OPTIONAL 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
• Scaling chisel
• Grooving chisel
• Drill chuck assembly
• Drill chuck S13
• Chuck adapter
• Chuck key S13
• Bit grease
• Side grip
• Depth gauge
• Blow-out bulb
• Dust cup
• Dust extractor attachment
• Safety goggles
• Plastic carrying case
• Keyless drill chuck
• Various type of Makita genuine batteries and
chargers
NOTE:
• Some items in the list may be included in the tool
package as standard accessories. They may differ
from country to country.