Manual Makita bdf 451 rfx (page 8 of 22) (English, German, Dutch, Danish, French, Italian, Portuguese, Swedish, Spanish, Norwegian, Finnish)

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• When driving wood screws, predrill pilot holes to make

driving easier and to prevent splitting of the workpiece.

See the chart.

• 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

First, slide the action mode change lever to the position of

symbol.

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 indenta-

tion and start drilling.

Use a cutting lubricant when drilling metals. The excep-

tions 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 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.

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.

Replacing carbon brushes

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. (Fig. 13)

Use a screwdriver to remove two screws then remove the

rear cover. (Fig. 14)

Raise the arm part of the spring and then place it in the

recessed part of the housing with a slotted bit screwdriver

of slender shaft or the like. (Fig. 15)

Use pliers to remove the carbonbrush caps of the carbon

brushes. Take out the worn carbon brushes, insert the

new ones and replace the carbonbrush caps in reverse.

(Fig. 16)

Make sure that the carbonbrush caps have fit into the

holes in brush holders securely. (Fig. 17)

Reinstall the rear cover and tighten two screws securely.

To maintain product SAFETY and RELIABILITY, repairs,

any other maintenance or adjustment should be per-

formed by Makita Authorized Service Centers, always

using Makita replacement parts.

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

• Screw bits

•Hook

• Grip assembly

• Various type of Makita genuine batteries and chargers

• Rubber pad assembly

• Wool bonnet

• Foam polishing pad

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 3.7 - 3.9

5.8 4.0 - 4.2

6.1 4.2 - 4.4

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Makita bdf 451 rfx Manual

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