Manual Makita HK 1820 (page 5 of 32) (English, German, Dutch, Danish, French, Italian, Portuguese, Spanish)

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FUNCTIONAL DESCRIPTION

CAUTION:

• Always be sure that the tool is switched off and

unplugged before adjusting or checking function on the

tool.

Switch action (Fig. 1)

CAUTION:

• Before plugging in 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.

For continuous operation, pull the switch trigger and then

push in the lock button.

To stop the tool from the locked position, pull the switch

trigger fully, then release it.

Speed change (Fig. 2)

The blows per minute can be adjusted just by turning the

adjusting dial. This can be done even while the tool is

running. The dial is marked 1 (lowest speed) to 5 (full

speed).

Refer to the table below for the relationship between the

number settings on the adjusting dial and the blows per

minute.

CAUTION:

• The speed adjusting dial can be turned only as far as 5

and back to 1. Do not force it past 5 or 1, or the speed

adjusting function may no longer work.

ASSEMBLY

CAUTION:

• Always be sure that the tool is switched off and

unplugged before carrying out any work on the tool.

Installing or removing the bit (Fig. 3)

Clean the bit shank before installing the bit.

Insert the bit into the tool. Turn the bit and push it in until it

engages. (Fig. 4)

If the bit cannot be pushed in, remove the bit. Pull the

chuck cover down a couple of times. Then insert the bit

again. Turn the bit and push it in until it engages.

After installing, always make sure that the bit is securely

held in place by trying to pull it out.

To remove the bit, pull the chuck cover down all the way

and pull the bit out. (Fig. 5)

Bit angle (Fig. 6 & 7)

The bit can be secured at 12 different angles. To change

the bit angle, slide the change ring forward, then turn the

change ring to change the bit angle. At the desired angle,

slide the change ring back to the original position. The bit

will be secured in place.

Hook (Fig. 8)

When connecting the power supply cord to an extension

cord, use the hook so that the plug of power supply cord

cannot be disconnected from the connector of extension

cord. Set it on the extension cord 10 cm - 20 cm away

from the connector of the extension cord.

OPERATION (Fig. 9)

Position the bit at the location to be chipped, then pull the

switch trigger. Apply slight pressure on the tool so that the

tool will not bounce around, uncontrolled.

Pressing very hard on the tool will not increase the

efficiency. (Fig. 10)

NOTE:

• When removing tiles with a scaling chisel, apply the

chisel to the bottom of tiles as shown in the figure. If

you operate the tool with the chisel applied to the top

surface of tiles, the service life of the chisel will be

shortened.

MAINTENANCE

CAUTION:

• Always be sure that the tool is switched off and

unplugged 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,

carbon brush inspection and replacement, 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

present a risk of injury to persons. Only use accessory

or attachment for its stated purpose.

If you need any assistance for more details regarding

these accessories, ask your local Makita Service Center.

• Bull point

• Cold chisel

• Scaling chisel

• Bit grease

• Safety goggles

• Hammer grease

•Hook

Noise

ENG905-1

The typical A-weighted noise level determined according

to EN60745:

Sound pressure level (L

): 83 dB (A)

Sound power level (L

): 94 dB (A)

Uncertainty (K): 3 dB (A)

Wear ear protection.

Number on adjusting dial Blows per minute

5 3,200

4 2,900

3 2,600

2 2,300

1 2,000

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Makita HK 1820 Manual

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