Manual Makita 8391D (page 5 of 48) (English, German, Dutch, Danish, French, Italian, Portuguese, Spanish)

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IMPORTANT SAFETY INSTRUCTIONS

FOR BATTERY CARTRIDGE

ENC004-1

1. Before using battery cartridge, read all instruc-

tions and cautionary markings on (1) battery

charger, (2) battery, and (3) product using bat-

tery.

2. Do not disassemble battery cartridge.

3. If operating time has become excessively

shorter, stop operating immediately. It may

result in a risk of overheating, possible burns

and even an explosion.

4. If electrolyte gets into your eyes, rinse them out

with clear water and seek medical attention right

away. It may result in loss of your eyesight.

5. Always cover the battery terminals with the bat-

tery cover when the battery cartridge is not

used.

6. Do not short the battery cartridge:

(1) Do not touch the terminals with any conduc-

tive material.

(2) Avoid storing battery cartridge in a container

with other metal objects such as nails, coins,

etc.

(3) Do not expose battery cartridge to water or

rain.

A battery short can cause a large current flow,

overheating, possible burns and even a break-

down.

7. Do not store the tool and battery cartridge in

locations where the temperature may reach or

exceed 50°C (122°F).

8. 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.

9. Be careful not to drop or strike 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 bat-

tery 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 tempera-

ture at 10°C – 40°C (50°F – 104°F). Let a hot bat-

tery cartridge cool down before charging it.

4. Charge the Nickel Metal Hydride battery car-

tridge when you do not use it for more than six

months.

FUNCTIONAL DESCRIPTION

CAUTION:

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

tery cartridge is removed before adjusting or checking

function on the tool.

Installing or removing battery cartridge (Fig. 1)

• Always switch off the tool before insertion or removal of

the battery cartridge.

• To remove the battery cartridge, withdraw it from the

tool while pressing the buttons on both sides of the car-

tridge.

• To insert 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 not, it may accidentally fall out

of the tool, causing injury to you or someone around

you.

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

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

inserted correctly.

Switch action (Fig. 2)

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.

Reversing switch action (Fig. 3)

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 counter-

clockwise 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.

Speed change (Fig. 4)

To change the speed, first switch off the tool and then

slide the speed change lever to the “2” side for high

speed or “1” side for low speed. Be sure that the speed

change lever is set to the correct position before opera-

tion. Use the right speed for your job.

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” side and “2”

side, the tool may be damaged.

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

ning. The tool may be damaged.

Selecting the action mode (Fig. 5)

This tool employs an action mode changing ring. Select

one of the three modes suitable for your work needs by

using this ring.

For rotation only, turn the ring so that the arrow on the

tool body points toward the m mark on the ring.

For rotation with hammering, turn the ring so that the

arrow points toward the on the ring.

For rotation with clutch, turn the ring so that the arrow

points toward the mark on the ring.

CAUTION:

• Always set the ring correctly to your desired mode

mark. If you operate the tool with the ring positioned

halfway between the mode marks, the tool may be

damaged.

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Makita 8391D Manual

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