Makita BFL122F Buku Petunjuk - Halaman 8

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Adjusting the fastening torque (Fig. 6 & 7)

When you wish to drive machine screws, wood screws,

hex bolts, etc. with the predetermined torque, adjusting

the fastening torque as follows.

1. First remove the battery cartridge from the tool.

2. Loosen the screws securing the lamp cover.

3. Rotate the ring in the front of the tool by hand so that a

hole can be seen below the ring.

4. Place the battery cartridge in place and pull the switch

trigger. Release it so that the adjusting ring rotates

and becomes visible in the hole. And then remove the

battery cartridge.

5. Use an optional adjusting grip to adjust the fastening

torque. Insert the pin of the adjusting grip into the hole

in the front of the tool. And then, turn the adjusting grip

clockwise to set a greater fastening torque, and coun-

terclockwise to set a smaller fastening torque.

6. Align the edge of the adjusting ring with your desired

number on the fastening torque scale.

7. Align the yellow line with your desired number on the

fastening torque scale.

8. Insert the battery cartridge and be sure that a fasten-

ing torque has been set up by using a fastening torque

tester.

9. Tighten the screws to secure the lamp cover and then

rotate the ring in front of the tool until the ring is

locked.

NOTE:

• Numbers on the fastening torque scale is a guideline to

set up your desired fastening torque.

ASSEMBLY

CAUTION:

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

tery cartridge is removed before carrying out any work

on the tool.

Selecting correct socket or screw bit

There are different types of sockets or bits for some mod-

els depending on applications. Choose and install a cor-

rect socket or bit for your application.

Installing or removing socket (Fig. 8)

To install the socket, push it onto the square drive of the

tool with one hand by depressing a pin on the square

drive with another hand until it locks into place. To

remove the socket, simply pull it off depressing the pin on

the square drive.

Installing or removing bit (Fig. 9)

For tools with retracting sleeve

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.

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

arrow and pull the bit out firmly.

For tools without retracting sleeve

To install the bit, just insert the bit into the spindle as far

as it will go. To remove the bit, pull the bit out firmly.

OPERATION

Hold the tool firmly and place the socket over the bolt or

nut. Then switch the tool on. When the clutch cuts in, the

motor will stop automatically. Then release the switch

trigger.

NOTE:

• Hold the tool with its square drive pointed straight at the

bolt or nut, or the bolt or nut will be damaged.

Limits of fastening capacity

Use the tool within the range of the revolution angle up to

360°. If you use the tool beyond the upper limit of this

range, the clutch does not work. And the tool cannot

deliver enough fastening torque (LED indicator flickers in

red and green alternatively).

NOTE:

• The revolution angle means the angle which a screw/

bolt revolves when the tool attains to 100% from 50%

of desired torque.

• Use of a low temperature conditioned battery cartridge

may sometimes give warning for battery cartridge

capacity by warning lamp and beeper which makes the

tool stop immediately. In this case, the fastening capac-

ity may be inferior to the specification on this manual

even if a charged battery cartridge is used.

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.

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

like. Discoloration, deformation or cracks may result.

Replacing carbon brushes (Fig. 10 & 11)

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 per-

formed by Makita Authorized Service Centers, always

using Makita replacement parts.