Makita DFL300F Instruction Manual Download

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Adjusting the fastening torque

When you wish to drive machine screws, wood screws,
hex bolts, etc. with the predetermined torque, adjust the
fastening torque as follows.
1. First remove the battery cartridge from the tool.
2. Loosen and remove the screw that secures ring.

(Fig. 6)

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

hole can be seen below the ring.

(Fig. 7)

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

trigger. Release it so that the adjust ring rotates and
becomes visible in the hole. And then remove the
battery cartridge.

5. Use an optional adjust grip to adjust the fastening

torque. Insert the pin of the adjust grip into the hole in
the front of the tool. And then, turn the adjust grip
clockwise to set a greater fastening torque, and
counterclockwise to set a smaller fastening torque.

(Fig. 8)

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

number on the fastening torque scale.

7. Insert the battery cartridge and be sure that a

fastening torque has been set up by using a fastening
torque tester.

8. Rotate the ring in front of the tool and then tighten the

screw to secure the ring.

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

battery cartridge is removed before carrying out any
work on the tool.

Selecting correct socket

There are different types of sockets for some models
depending on applications. Choose and install a correct
socket for your application.

Installing or removing socket (Fig. 9)

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.

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 (Fig. 10 & 11)

Use the tool within the limits of fastening capacity. If you
use the tool beyond the limits, the clutch does not work.
And the tool cannot deliver enough fastening torque.

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 range of
fastening capacity may be inferior to those shown in
the Fig. 10 and 11 even if a charged battery cartridge is
used.

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.

To maintain product SAFETY and RELIABILITY, repairs,
any other maintenance or adjustment should be
performed by Makita Authorized Service Centres, 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.

Overheat

This function works if the temperature
of the controller or motor increases to a
high level and the tool stops.

Flickers in red
quickly.

A series of
short beeps

Remove the battery
cartridge immediately
and cool the tool
down.

Operation error of
the switch trigger

This function works to avoid the tool’s
immediate start upon insertion of
battery cartridge into the tool with the
switch trigger being pulled.

Flickers in red
and green
alternatively.

A series of
short beeps

Release the switch
trigger.

Function

Status