Manual Makita DFS451 (page 5 of 40) (English, German, Dutch, Danish, French, Italian, Portuguese, Spanish)

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6. Do not store the tool and battery cartridge in

locations where the temperature may reach or

exceed 50°C (122°F).

7. Do not incinerate the battery cartridge even if it is

severely damaged or is completely worn out. The

battery cartridge can explode in a fire.

8. Be careful not to drop or strike battery.

9. Do not use a damaged battery.

SAVE THESE INSTRUCTIONS.

Tips for maintaining maximum battery life

1. Charge the battery cartridge before completely

discharged.

Always stop tool operation and charge the battery

cartridge when you notice less tool power.

2. Never recharge a fully charged battery cartridge.

Overcharging shortens the battery service life.

3. Charge the battery cartridge with room

temperature at 10°C - 40°C (50°F - 104°F). Let a hot

battery cartridge cool down before charging it.

4. Charge the battery cartridge once in every six

months if you do not use it for a long period of

time.

FUNCTIONAL DESCRIPTION

CAUTION:

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

battery cartridge is removed before adjusting or

checking function on the tool.

Installing or removing battery cartridge

(Fig. 1)

• Always switch off the tool before installing or removing

of the battery cartridge.

• To remove the battery cartridge, slide it from the tool

while sliding the button on the front of the cartridge.

• To install the battery cartridge, align the tongue on the

battery cartridge with the groove in the housing and slip

it into place. Always insert it all the way until it locks in

place with a little click. If you can see the red indicator

on the upper side of the button, it is not locked

completely. Install it fully until the red indicator cannot

be seen. If not, it may accidentally fall out of the tool,

causing injury to you or someone around you.

• Do not use force when installing the battery cartridge. If

the cartridge does not slide in easily, it is not being

inserted correctly.

Battery protection system (Battery

cartridge with a star mark) (Fig. 2)

The battery cartridge with a star mark is equipped with the

protection system, which automatically cuts off the output

power for its long service life.

The tool stops during operation when the tool and/or

battery are placed under the following situation. This is

caused by the activation of protection system and does

not show the tool trouble.

• When the tool is overloaded:

At this time, release the switch trigger, remove the

battery cartridge and remove causes of overload and

then pull the switch trigger again to restart.

• When battery cells get hot:

If any operation of the switch trigger, the motor will

remain stopped. At this time, stop use of the tool and

cool or charge the battery cartridge after removing it

from the tool.

• When the remaining battery capacity gets low:

If any operation of the switch trigger, the motor will

remain stopped. At this time, remove the battery

cartridge from the tool and charge it .

Switch action (Fig. 3)

CAUTION:

• Before inserting the battery cartridge into the tool,

always check to see that the switch trigger actuates

properly and returns to the “OFF” position when

released.

To start the tool, simply pull the switch trigger. Tool speed

is increased by increasing pressure on the switch trigger.

Release the switch trigger to stop.

NOTE:

• Even with the switch on and motor running, the bit will

not rotate until you fit the point of the bit in the screw

head and apply forward pressure to engage the clutch.

Lighting up the front lamp (Fig. 4)

CAUTION:

• Do not look in the light or see the source of light

directly.

Pull the switch trigger to light up the lamp. The lamp

keeps on lighting while the switch trigger is being pulled.

The lamp goes out 10 - 15 seconds after releasing the

trigger.

NOTE:

• Use a dry cloth to wipe the dirt off the lens of lamp. Be

careful not to scratch the lens of lamp, or it may lower

the illumination.

Reversing switch action (Fig. 5)

This tool has a reversing switch to change the direction of

rotation. Depress the reversing switch lever from the A

side for clockwise rotation or from the B side for

counterclockwise rotation.

When the reversing switch lever is in the neutral position,

the switch trigger cannot be pulled.

CAUTION:

• Always check the direction of rotation before operation.

• Use the reversing switch only after the tool comes to a

complete stop. Changing the direction of rotation

before the tool stops may damage the tool.

When not operating the tool, always set the reversing

switch lever to the neutral position.

Depth adjustment (Fig. 6)

The depth can be adjusted by turning the locator. Turn it

in “B” direction for less depth and in “A” direction for more

depth. One full turn of the locator equals 2 mm change in

depth. (Fig. 7)

Adjust the locator so that the distance between the tip of

the locator and the screw head is approximately 3 mm as

shown in the figures. Drive a trial screw into your material

or a piece of duplicate material. If the depth is still not

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Makita DFS451 Manual

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