Manual Makita BTD125 (page 7 of 44) (English, German, Dutch, Danish, French, Italian)

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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 or removing driver bit or socket

bit (Fig. 7)

Use only bits that has inserting portion shown in the

figure.

For tool with shallow bit hole

For tool with deep bit hole

1. To install the bit, pull the sleeve in the direction of the

arrow and insert the bit into the sleeve as far as it will

go. Then release the sleeve to secure the bit. (Fig. 8)

2. To install the bit, pull the sleeve in the direction of the

arrow and insert the bit-piece and bit into the sleeve

as far as it will go. The bit-piece should be inserted

into the sleeve with its pointed end facing in. Then

release the sleeve to secure the bit. (Fig. 9)

To remove the bit, pull the sleeve in the direction of the

arrow and pull the bit out firmly.

NOTE:

• If the bit is not inserted deep enough into the sleeve,

the sleeve will not return to its original position and the

bit will not be secured. In this case, try re-inserting the

bit according to the instructions above.

• After inserting the bit, make sure that it is firmly

secured. If it comes out, do not use it.

OPERATION (Fig. 10)

The proper fastening torque may differ depending upon

the kind or size of the screw/bolt, the material of the

workpiece to be fastened, etc. The relation between

fastening torque and fastening time is shown in the

figures. (Fig. 11 - 14)

Hold the tool firmly and place the point of the driver bit in

the screw head. Apply forward pressure to the tool to the

extent that the bit will not slip off the screw and turn the

tool on to start operation.

NOTE:

• Use the proper bit for the head of the screw/bolt that

you wish to use.

• When fastening screw M8 or smaller, carefully adjust

pressure on the switch trigger so that the screw is not

damaged.

• Hold the tool pointed straight at the screw.

• If you tighten the screw for a time longer than shown in

the figures, the screw or the point of the driver bit may

be overstressed, stripped, damaged, etc. Before

starting your job, always perform a test operation to

determine the proper fastening time for your screw.

The fastening torque is affected by a wide variety of

factors including the following. After fastening, always

check the torque with a torque wrench.

1. When the battery cartridge is discharged almost

completely, voltage will drop and the fastening torque

will be reduced.

2. Driver bit or socket bit

Failure to use the correct size driver bit or socket bit

will cause a reduction in the fastening torque.

3. Bolt

• Even though the torque coefficient and the class of

bolt are the same, the proper fastening torque will

differ according to the diameter of bolt.

• Even though the diameters of bolts are the same,

the proper fastening torque will differ according to

the torque coefficient, the class of bolt and the bolt

length.

4. The manner of holding the tool or the material of

driving position to be fastened will affect the torque.

5. Operating the tool at low speed will cause a reduction

in the fastening torque.

MAINTENANCE

CAUTION:

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

battery cartridge is removed 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. 15)

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 two screws then remove the

rear cover. (Fig. 16)

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. 17)

Use pliers to remove the carbon brush cap of the carbon

brushes. Take out the worn carbon brushes, insert the

new ones and replace the carbon brush cap in reverse.

(Fig. 18 & 19)

Make sure that the carbon brush cap have fit into the

holes in brush holders securely.

Reinstall the rear cover and tighten two screws securely.

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.

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

A=12 mm

B=9 mm

Use only these type of bit. Follow the

procedure (1).

(Note) Bit-piece is not necessary.

A=17 mm

B=14 mm

To install these types of bits, follow the

procedure (1).

A=12 mm

B=9 mm

To install these types of bits, follow the

procedure (2).

(Note) Bit-piece is necessary for installing

the bit.

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Makita BTD125 Manual

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