Bedienungsanleitung Makita 8444 d (Seite 6 von 18) (Deutsch, Englisch, Holländisch, Dänisch, Französisch, Italienisch, Portugiesisch, Spanisch, Schwedisch, Norwegisch, Finnisch)

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ASSEMBLY

CAUTION:

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

tery cartridge is removed before carrying out any work

on the tool.

Installing side grip (auxiliary handle) (Fig. 7)

Always use the side grip to ensure operating safety.

Install the side grip so that the protrusions on the grip

base fit in between the grooves on the barrel. Then

tighten the grip by turning clockwise.

Installing or removing driver bit or drill bit

Turn the sleeve counterclockwise to open the chuck jaws.

Place the bit in the chuck as far as it will go. Turn the

sleeve clockwise to tighten the chuck. To remove the bit,

turn the sleeve counterclockwise. (Fig. 8)

When not using the driver bit, keep it in the bit holders.

Bits 45 mm long can be kept there. (Fig. 9)

Adjustable depth rod (Fig. 10)

The adjustable depth rod is used to drill holes of uniform

depth. Loosen the clamp screw, set to desired position,

then tighten the clamp screw.

OPERATION

Hammer drilling operation

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.

First, slide the action mode change lever so that it points

to the marking. The adjusting ring can be aligned in

any torque levels for this operation.

Be sure to use a tungsten-carbide tipped bit.

Position the bit at the desired location for the hole, then

pull the switch trigger. Do not force the tool. Light pres-

sure gives best results. Keep the tool in position and pre-

vent 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.

Blow-out bulb (optional accessory) (Fig. 11)

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

dust out of the hole.

Screwdriving operation (Fig. 12)

First, slide the action mode change lever so that it points

to the marking. Adjust the adjusting ring to the proper

torque level for your work. Then proceed as follows.

Place the point of the driver bit in the screw head and

apply pressure to the tool. Start the tool slowly and then

increase the speed gradually. Release the switch trigger

as soon as the clutch cuts in.

NOTE:

• Make sure that the driver bit is inserted straight in the

screw head, or the screw and/or bit may be damaged.

• When driving wood screws, predrill pilot holes to make

driving easier and to prevent splitting of the workpiece.

See the chart.

NOTE:

• If the tool is operated continuously until the battery car-

tridge has discharged, allow the tool to rest for 15 min-

utes before proceeding with a fresh battery.

Drilling operation

CAUTION:

• 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 force exerted on the tool/bit at

the time of hole break through. 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.

• If the tool is operated continuously until the battery car-

tridge has discharged, allow the tool to rest for 15 min-

utes before proceeding with a fresh battery.

First, slide the action mode change lever so that it points

to the m marking. The adjusting ring can be aligned in

any torque levels for this operation. Then proceed as fol-

lows.

Drilling in wood

When drilling in wood, the best results are obtained with

wood drills equipped with a guide screw. The guide

screw makes drilling easier by pulling the bit into the

workpiece.

Nominal diameter of

wood screw (mm)

Recommended size of

pilot hole (mm)

3.1 2.0 – 2.2

3.5 2.2 – 2.5

3.8 2.5 – 2.8

4.5 2.9 – 3.2

4.8 3.1 – 3.4

5.1 3.3 – 3.6

5.5 3.6 – 3.9

5.8 4.0 – 4.2

6.1 4.2 – 4.4

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