Manual Makita BDF 441 (page 7 of 52) (English, German, Dutch, Danish, French, Italian)

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a second at the “2” position, then stop the tool and slide

to your desired position.

CAUTION:

• Always set the speed change lever fully to the correct

position. If you operate the tool with the speed change

lever positioned halfway between the “1” position, “2”

position and “3” position, the tool may be damaged.

• Do not use the speed change lever while the tool is

running. The tool may be damaged.

Selecting action mode (Fig. 6)

This tool has an action mode change lever. For drilling,

slide the action mode change lever to the left ( symbol).

For screwing, slide the action mode change lever to the

right ( symbol).

NOTE:

• When changing the position from “ ” to “ ”, it may be

a little difficult to slide the mode change lever. At this

time, switch on and run the tool for a second at the

“Screw” position, then stop the tool and slide to your

desired position.

CAUTION:

• Always slide the action mode change lever all the way

to your desired mode position. If you operate the tool

with the lever positioned halfway between the mode

symbols, the tool may be damaged.

• Do not use the action mode change lever while the tool

is running. The tool may be damaged.

Adjusting the fastening torque (Fig. 7)

The fastening torque can be adjusted in 16 steps by

turning the adjusting ring so that its graduations are

aligned with the pointer on the tool body.

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

symbol.

The fastening torque is minimum when the number 1 is

aligned with the pointer, and maximum when the marking

is aligned with the pointer. The clutch will slip at various

torque levels when set at the number 1 to 16. Before

actual operation, drive a trial screw into your material or a

piece of duplicate material to determine which torque level

is required for a particular application.

NOTE:

• The adjusting ring does not lock when the pointer is

positioned only halfway between the graduations.

ASSEMBLY

CAUTION:

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

battery cartridge is removed before carrying out any

work on the tool.

Installing side grip (auxiliary handle)

(Fig. 8)

Always use the side grip to ensure operating safety.

Insert the side grip so that the protrusions on the grip base

fit in between the grooves on the tool barrel. Then tighten

the grip by turning clockwise.

Installing or removing driver bit or drill bit

(Fig. 9)

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.

Installing bit holder (Fig. 10)

Fit the bit holder into the protrusion at the tool foot on

either right or left side and secure it with a screw.

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

Bits 45 mm long can be kept there.

Hook (Fig. 11)

The hook is convenient for temporarily hanging the tool.

This can be installed on either side of the tool.

To install the hook, insert it into a groove in the tool

housing on either side and then secure it with a screw. To

remove, loosen the screw and then take it out.

OPERATION

Screwdriving operation (Fig. 12)

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

symbol and select the fastening torque.

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

cartridge has discharged, allow the tool to rest for

15 minutes 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.

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 441 Manual

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