DHR242 - Drill MAKITA - Free user manual and instructions

USER MANUAL DHR242 MAKITA

ENGLISH (Original instructions)

Explanation of general view

8 Quick change chuck for

12 Quick change drill chuck

13 Rotation with hammering

33 Keyless drill chuck

Rated voltage D.C. 18 V D.C. 18 V Optional accessory

Model DX01/DX06 DX02/DX07

(For DHR242) (For DHR243)

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

• Specifications may differ from country to country.

• The weight may differ depending on the attachment(s), including the battery cartridge. The lightest and heaviest

combination, according to EPTA-Procedure 01/2014, are shown in the table.

Applicable battery cartridge and charger

• Some of the battery cartridges and chargers listed above may not be available depending on your region of resi-

WARNING: Only use the battery cartridges and chargers listed above. Use of any other battery cartridges and

chargers may cause injury and/or fire. 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. GEA010-2 General power tool safety warnings

WARNING: Read all safety warnings, instructions,

illustrations and specifications provided with this

power tool. Failure to follow all instructions listed below

may result in electric shock, fire and/or serious injury.

Save all warnings and instructions for future refer-

The term “power tool” in the warnings refers to your

mains-operated (corded) power tool or battery-operated

(cordless) power tool. GEB246-1

CORDLESS ROTARY HAMMER SAFETY WARNINGS Safety instructions for all operations

1. Wear ear protectors. Exposure to noise can cause

2. Use auxiliary handle(s), if supplied with the tool.

Loss of control can cause personal injury.

Battery cartridge BL1815N / BL1820B / BL1830B / BL1840B / BL1850B / BL1860B Charger DC18RC / DC18RD / DC18RE / DC18SD / DC18SE / DC18SF / DC18SH / DC18WC7

3. Hold the power tool by insulated gripping sur-

faces, 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.

Safety instructions when using long drill bits with

1. Always start drilling at low speed and with the bit

tip in contact with the workpiece. At higher

speeds, the bit is likely to bend if allowed to rotate

freely without contacting the workpiece, resulting in

2. Apply pressure only in direct line with the bit

and do not apply excessive pressure. Bits can

bend, causing breakage or loss of control, resulting

Additional safety warnings

1. 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 recom-

mended that you wear a dust mask and thickly

2. Be sure the bit is secured in place before opera-

3. 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.

4. 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.

5. Always be sure you have a firm footing. Be sure

no one is below when using the tool in high loca-

6. Hold the tool firmly with both hands.

7. Keep hands away from moving parts.

8. Do not leave the tool running. Operate the tool

only when hand-held.

9. Do not point the tool at any one in the area when

operating. The bit could fly out and injure some-

10. Do not touch the bit, parts close to the bit, or

workpiece immediately after operation; they may

be extremely hot and could burn your skin.

11. Some material contains chemicals which may be

toxic. Take caution to prevent dust inhalation

and skin contact. Follow material supplier safety

12. Always be sure that the tool is switched off and

the battery cartridge and the bit are removed

before handing the tool to other person.

13. Before operation, make sure that there is no bur-

ied object such as electric pipe, water pipe or

gas pipe in the working area. Otherwise, the drill

bit/chisel may touch them, resulting an electric

shock, electrical leakage or gas leak.

14. Do not operate the tool at no-load unnecessarily.

SAVE THESE INSTRUCTIONS.

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

IMPORTANT SAFETY INSTRUCTIONS FOR BATTERY CARTRIDGE

1. Before using battery cartridge, read all instruc-

tions and cautionary markings on (1) battery

charger, (2) battery, and (3) product using bat-

2. Do not disassemble or tamper with the battery

cartridge. It may result in a fire, excessive heat, or

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 conduc-

(2) Avoid storing battery cartridge in a container

with other metal objects such as nails, coins,

(3) Do not expose battery cartridge to water or

A battery short can cause a large current flow,

overheating, possible burns and even a break-

6. Do not store and use the tool and battery car-

tridge in locations where the temperature may

reach or exceed 50 °C (122 °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. Do not nail, cut, crush, throw, drop the battery

cartridge, or hit against a hard object to the bat-

tery cartridge. Such conduct may result in a fire,

excessive heat, or explosion.

9. Do not use a damaged battery.

10. The contained lithium-ion batteries are subject

to the Dangerous Goods Legislation require-

For commercial transports e.g. by third parties, for-

warding agents, special requirement on packaging

and labeling must be observed.

For preparation of the item being shipped, consult-

ing an expert for hazardous material is required.

Please also observe possibly more detailed national

Tape or mask off open contacts and pack up the bat-

tery in such a manner that it cannot move around in

11. When disposing the battery cartridge, remove it

from the tool and dispose of it in a safe place.

Follow your local regulations relating to disposal

12. Use the batteries only with the products speci-

fied by Makita. Installing the batteries to non-com-

pliant products may result in a fire, excessive heat,

explosion, or leak of electrolyte.

13. If the tool is not used for a long period of time,

the battery must be removed from the tool.

14. During and after use, the battery cartridge may

take on heat which can cause burns or low tem-

perature burns. Pay attention to the handling of

hot battery cartridges.

15. Do not touch the terminal of the tool immediately

after use as it may get hot enough to cause

16. Do not allow chips, dust, or soil stuck into the

terminals, holes, and grooves of the battery car-

tridge. It may cause heating, catching fire, burst and

malfunction of the tool or battery cartridge, resulting

in burns or personal injury.

17. Unless the tool supports the use near high-volt-

age electrical power lines, do not use the battery

cartridge near high-voltage electrical power

lines. It may result in a malfunction or breakdown of

the tool or battery cartridge.

18. Keep the battery away from children.

SAVE THESE INSTRUCTIONS.

Only use genuine Makita batteries. Use of non-

genuine Makita batteries, or batteries that have been

altered, may result in the battery bursting causing fires,

personal injury and damage. It will also void the Makita

warranty for the Makita tool and charger.

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

2. Never recharge a fully charged battery cartridge.

Overcharging shortens the battery service life.

3. Charge the battery cartridge with room tempera-

ture at 10 °C - 40 °C (50 °F - 104 °F). Let a hot bat-

tery cartridge cool down before charging it.

4. When not using the battery cartridge, remove it

from the tool or the charger.

5. Charge the battery cartridge if you do not use it

for a long period (more than six months).

FUNCTIONAL DESCRIPTION CAUTION:

• Always be sure that the tool is switched off and the bat-

tery cartridge is removed before adjusting or checking

function on the tool.

Installing or removing battery cartridge (Fig. 1)

• 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.

• 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 com-

pletely. Install it fully until the red indicator cannot be

seen. If not, it may accidentally fall out of the tool, caus-

ing 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

Indicating the remaining battery capacity (Fig. 2)

Only for battery cartridges with the indicator

Press the check button on the battery cartridge to indi-

cate the remaining battery capacity. The indicator lamps

light up for a few seconds.

• Depending on the conditions of use and the ambient

temperature, the indication may differ slightly from the

• The first (far left) indicator lamp will blink when the bat-

tery protection system works.

Tool / battery protection system

The tool is equipped with a tool/battery protection sys-

tem. This system automatically cuts off the power to

extend tool and battery life. The tool will automatically

stop during operation if the tool or battery is placed under

one of the following conditions:

This protection works when the tool is operated in a man-

ner that causes it to draw an abnormally high current. In

this situation, turn the tool off and stop the application

that caused the tool to become overloaded. Then turn

the tool on to restart.

This protection works when the tool or battery is over-

heated. In this situation, let the tool and battery cool

before turning the tool on again.

Overdischarge protection

This protection works when the remaining battery capac-

ity gets low. In this situation, remove the battery from the

tool and charge the battery.

Switch action (Fig. 3)

• 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

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 counter-

When the reversing switch lever is in the neutral position,

the switch trigger cannot be pulled.

• 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

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

• 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

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.

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 m 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, scal-

Notice on the action mode changing knob operation

To avoid the damage to the mechanism of the action

mode changing knob, follow the procedures below:

• Do not rotate the action mode changing knob when the

• Make sure that the action mode changing knob is

always positively located in one of the three action

mode positions (m, , or ). (Fig. 10)

• Do not turn the knob forcibly. Forcing the knob may

When turning the action mode changing knob from the

symbol to the m symbol or vise versa, the knob may

no longer move in the symbol position. In this case,

move the knob to the symbol position and run the

tool few seconds. After that, move the knob to the

desired position. (Fig. 11)

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.

• As soon as the torque limiter actuates, switch off the

tool immediately. This will help prevent premature wear

• 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.

• Always be sure that the tool is switched off and the bat-

tery cartridge is removed before carrying out any work

Side grip (auxiliary handle) (Fig. 12)

• 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.

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

Insert the bit into the tool. Turn the bit and push it in until

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. 15)10

Bit angle (when chipping, scaling or demolishing)

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

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.

Depth gauge (Fig. 18)

The depth gauge is convenient for drilling holes of uni-

form 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.

• The depth gauge cannot be used at the position where

the depth gauge strikes against the gear housing.

Use the dust cup to prevent dust from falling over the tool

and on yourself when performing overhead drilling oper-

ations. Attach the dust cup to the bit as shown in the fig-

ure. The size of bits which the dust cup can be attached

OPERATION Hammer drilling operation (Fig. 20)

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

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.

• 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 embed-

ded 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

• Eccentricity in the bit rotation may occur while operat-

ing the tool with no load. The tool automatically centers

itself during operation. This does not affect the drilling

Blow-out bulb (optional accessory) (Fig. 21)

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

dust out of the hole.

Chipping/Scaling/Demolition (Fig. 22)

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. 23 & 24)

Use the optional drill chuck assembly. When installing it,

refer to the section “Installing or removing the bit”.

Set the action mode changing knob so that the pointer

• 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.

Use the quick change drill chuck as standard equipment.

When installing it, refer to the section “Changing the

quick change chuck for SDS-plus”.

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 clock-

wise to tighten the chuck. To remove the bit, hold the ring

and turn the sleeve counterclockwise.

Set the action mode changing knob to the m symbol.

You can drill up to 13 mm diameter in metal and up to

32 mm diameter in wood.

• 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

• 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 perfor-

mance 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

• Always secure small workpieces in a vise or similar

MAINTENANCE CAUTION:

• Always be sure that the tool is switched off and the bat-

tery 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

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

• Dust extractor attachment

• Plastic carrying case

• Keyless drill chuck

• Various type of Makita genuine batteries and chargers

• Some items in the list may be included in the tool pack-

age as standard accessories. They may differ from

The typical A-weighted noise level determined according

Sound pressure level (L

Sound power level (L WA

Uncertainty (K) : 3 dB (A)

Sound pressure level (L

Sound power level (L WA

Uncertainty (K) : 3 dB (A)

Sound pressure level (L

Sound power level (L WA

Uncertainty (K) : 3 dB (A)

Sound pressure level (L

Sound power level (L WA

Uncertainty (K) : 3 dB (A)

Sound pressure level (L

Sound power level (L WA

Uncertainty (K) : 3 dB (A)

Sound pressure level (L

Sound power level (L WA

• The declared noise emission value(s) has been mea-

sured in accordance with a standard test method and

may be used for comparing one tool with another.

• The declared noise emission value(s) may also be

used in a preliminary assessment of exposure.

• Wear ear protection.

• The noise emission during actual use of the power

tool can differ from the declared value(s) depend-

ing on the ways in which the tool is used especially

what kind of workpiece is processed.

• Be sure to identify safety measures to protect the

operator that are based on an estimation of expo-

sure 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).

The following table shows the vibration total value (tri-

axial vector sum) determined according to applicable

• The declared vibration total value(s) has been mea-

sured in accordance with a standard test method and

may be used for comparing one tool with another.

• The declared vibration total value(s) may also be used

in a preliminary assessment of exposure.

• The vibration emission during actual use of the

power tool can differ from the declared value(s)

depending on the ways in which the tool is used

especially what kind of workpiece is processed.

• Be sure to identify safety measures to protect the

operator that are based on an estimation of expo-

sure 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).

EC Declaration of Conformity

For European countries only

The EC declaration of conformity is included as Annex A

to this instruction manual.

WAARSCHUWING! Lees alle

• Plastic draagkoffer