Makita DA4030 Manuale di istruzioni - Pagina 6

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Installing side grip (auxiliary handle) (Fig. 2)

CAUTION:

• Always be sure that the tool is switched off and

unplugged before installing or removing the side grip.

• Always be sure that the side grip is installed securely.

Screw the side grip on the tool securely. The side grip

can be installed on either side of the tool.

Spade grip (Fig. 3 & 4)

The spade grip can be installed in any position as shown

in the figure. To change the position, loosen the hex bolts

(both sides) with a hex wrench and turn the spade grip to

the desired position. Then tighten the hex bolts securely.

After reposition the grip, return the hex wrench to the

wrench holder.

CAUTION:

• Do not fix the spade grip beyond the limits of the arrow.

Be cautious that your hand is not caught in the grip.

Keep the hand away from the drill chuck. They can lead

to serious accidents.

• Always be sure that the hex bolts (both sides) of the

spade grip are tightened securely.

Switch handle mounting positions (Fig. 5)

The switch handle can be rotated to either 90° left or right

to fit your work needs. First, unplug the tool. Press the

lock button and rotate the handle until the

lock button is aligned with that on the motor housing. The

handle will be locked in that position.

Switch action (Fig. 6)

CAUTION:

Before plugging in 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. Release

the trigger to stop.

Reversing switch action (Fig. 7 & 8)

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.

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-

clockwise rotation.

Speed change (For Model DA4031) (Fig. 9)

Two speed ranges can be pre-selected with the speed

change knob. Depress the lock button and turn the speed

change knob so that the pointer points to the position 1

or position 2.

–1

Position 1: 300 min

–1

Position 2: 1200 min

CAUTION:

• Use the speed change knob only after the tool comes

to a complete stop. Changing the tool speed before the

tool stops may damage the tool.

• Always set the speed change knob carefully into the

correct position. If you operate the tool with the speed

change knob positioned half-way between the position

1 and the position 2, the tool may be damaged.

Torque limiter (For Model DA4031)

The torque limiter will actuate when a certain torque level

is reached (for low speed setting: position 1). The motor

will disengage from the output shaft. When this happens,

the bit will stop turning.

Holding tool (Fig. 10 & 11)

CAUTION:

This is a powerful tool. High torque is developed and it is

important that the tool is securely held and properly

braced.

Grasp the handle with one hand and the spade grip with

the other hand. When drilling a large hole with a self-feed

bit, etc., the side grip (auxiliary handle) should be used

as a brace to maintain safe control of the tool.

When drilling action is forward (clockwise), the tool

should be braced to prevent a counterclockwise reaction

if the bit should bind. When reversing, brace the tool to

prevent a clockwise reaction. If the bit must be removed

from a partially drilled hole, be sure the tool is properly

braced before reversing.

Drilling operation

CAUTION:

• There is a tremendous force exerted on the tool/bit at

the time of hole breakthrough. Hold the tool firmly and

mark on the

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.

• 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.

• Always secure small workpieces in a vise or similar

hold-down device.

• Avoid drilling in material that you suspect contains hid-

den nails or other things that may cause the bit to bind

or break.

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.

Drilling in metal

To prevent the bit from slipping when starting a hole,

make an indentation with a center punch and hammer at

the point to be drilled. Place the point of the bit in the

indentation and start drilling. Use a cutting lubricant

when drilling metals. The exceptions are iron and brass

which should be drilled dry.