Handleiding Makita DHR242RTJW (pagina 9 van 16) (Nederlands, Duits, Engels, Frans, Italiaans, Portugees, Spaans, Turks, Deens)

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Depth gauge (Fig. 16)

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.

NOTE:

• The depth gauge cannot be used at the position where

the depth gauge strikes against the gear housing.

Dust cup (Fig. 17)

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

to is as follows.

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 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

severe injury.

NOTE:

• 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

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 & 22)

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

points to the

m symbol.

For Model DHR243 (Fig. 23, 24 & 25)

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.

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.

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 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

not hold it firmly.

• Always secure small workpieces in a vise or similar

hold-down device.

MAINTENANCE

CAUTION:

• Always be sure that the tool is switched off and 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

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.

Bit diameter

Dust cup 5 6 mm – 14.5 mm

Dust cup 9 12 mm – 16 mm

006382

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