Manual Makita DS4012 (page 4 of 32) (English, German, Dutch, Danish, French, Italian, Portuguese, Turkish, Spanish)

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This tool has a reversing switch to change the direction

of rotation. Move the reversing switch lever to the

position (A side) for clockwise rotation or the E position

(B side) for counterclockwise rotation.

ASSEMBLY

CAUTION:

• Always be sure that the tool is switched off and

unplugged before carrying out any work on the tool.

Installing top grip (auxiliary handle) (Fig. 3)

Screw the top grip on the tool securely.

Installing or removing drill bit (Fig. 4)

To install the bit, place it in the chuck as far as it will go.

Tighten the chuck by hand. Place the chuck key in each

of the three holes and tighten clockwise. Be sure to

tighten all three chuck holes evenly.

To remove the bit, turn the chuck key counterclockwise in

just one hole, then loosen the chuck by hand.

After using the chuck key, be sure to return it to the

original position.

OPERATION

Drilling operation (Fig. 5)

Always use the top or back grip (auxiliary handle) and

firmly hold the tool by top or back grip and switch handle

during operations.

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.

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

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.

• Avoid drilling in material that you suspect contains

hidden nails or other things that may cause the bit to

bind or break.

MAINTENANCE

CAUTION:

• Always be sure that the tool is switched off and

unplugged before attempting to perform inspection or

maintenance.

• Never use gasoline, benzine, thinner, alcohol or the

like. Discoloration, deformation or cracks may result.

Replacing carbon brushes (Fig. 6 & 7)

Remove and check the carbon brushes regularly.

Replace when they wear down to the limit mark. Keep

the carbon brushes clean and free to slip in the holders.

Both carbon brushes should be replaced at the same

time. Use only identical carbon brushes.

Use a screwdriver to remove the brush holder caps. Take

out the worn carbon brushes, insert the new ones and

secure the brush holder caps.

To maintain product SAFETY and RELIABILITY, repairs,

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.

• Drill bits

• Hole saws

• Angle attachment

• Chuck key

•Grip 36

• Depth gauge assembly

•Wrench

NOTE:

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

package as standard accessories. They may differ from

country to country.

ENG905-1

Noise

The typical A-weighted noise level determined according

to EN60745:

Sound pressure level (L

): 81 dB (A)

Sound power level (L

): 92 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:

Work mode: drilling into metal

Vibration emission (a

h, D

): 2.5 m/s

or less

Uncertainty (K): 1.5 m/s

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.

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Makita DS4012 Manual

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