Manual Makita HR2800 (page 7 of 64) (English, German, Dutch, Danish, French, Italian, Portuguese, Spanish)

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CAUTION:

• Do not rotate the action mode changing knob when the

tool is running under load. The tool will be damaged.

• To avoid rapid wear on the mode change mechanism,

be sure that the action mode changing knob is always

positively located in one of the three action mode

positions.

Torque limiter

The torque limiter will actuate when a certain torque level

is reached. The motor will disengage from the output

shaft. When this happens, the bit will stop turning.

CAUTION:

• As soon as the torque limiter actuates, switch off the

tool immediately. This will help prevent premature wear

of the tool.

• Bits such as hole saw, which tend to pintch or catch

easily in the hole, are not appropriate for this tool. This

is because they will cause the torque limiter to actuate

too frequently.

ASSEMBLY

CAUTION:

• Always be sure that the tool is switched off and

unplugged before carrying out any work on the tool.

Side grip (auxiliary handle) (Fig. 10)

CAUTION:

• Always use the side grip to ensure operating safety.

Install the side grip so that the teeth on the grip fit in

between the protrusions on the tool barrel. Then tighten

the grip by turning clockwise at the desired position. It

may be swung 360° so as to be secured at any position.

Bit grease

Coat the bit shank head beforehand with a small amount

of bit grease (about 0.5 - 1 g).

This chuck lubrication assures smooth action and longer

service life.

Installing or removing the bit (Fig. 11)

Clean the bit shank and apply bit grease before installing

the bit. (Fig. 12)

Insert the bit into the tool. 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. 13)

Bit angle (when chipping, scaling or

demolishing)

For models HR2810, HR2810T, HR2811F, HR2811FT

(Fig. 14)

The bit can be secured at the desired angle. To change

the bit angle, rotate the action mode changing knob to the

O symbol. Turn the bit to the desired angle.

Rotate the action mode changing knob to the symbol.

Then make sure that the bit is securely held in place by

turning it slightly. (Fig. 15)

Depth gauge (Fig. 16)

The depth gauge is convenient for drilling holes of uniform

depth. Loosen the side grip and insert the depth gauge

into the hole in the side grip. Adjust the depth gauge to the

desired depth and tighten the side grip.

NOTE:

• The depth gauge cannot be used at the position where

the depth gauge strikes against the gear housing.

Dust cup (Fig. 17)

Use the dust cup to prevent dust from falling over the tool

and on yourself when performing overhead drilling

operations. Attach the dust cup to the bit as shown in the

figure. The size of bits which the dust cup can be attached

to is as follows.

OPERATION

CAUTION:

• Always use the side grip (auxiliary handle) and firmly

hold the tool by both side grip and switch handle during

operations.

Hammer drilling operation (Fig. 18)

Set the action mode changing knob to the symbol.

Position the bit at the desired location for the hole, then

pull the switch trigger.

Do not force the tool. Light pressure gives best results.

Keep the tool in position and prevent it from slipping away

from the hole.

Do not apply more pressure when the hole becomes

clogged with chips or particles. Instead, run the tool at an

idle, then remove the bit partially from the hole. By

repeating this several times, the hole will be cleaned out

and normal drilling may be resumed.

CAUTION:

• There is a tremendous and sudden twisting force

exerted on the tool/bit at the time of hole break-

through, when the hole becomes clogged with chips

and particles, or when striking reinforcing rods

embedded in the concrete. Always use the side grip

(auxiliary handle) and firmly hold the tool by both side

grip and switch handle during operations. Failure to do

so may result in the loss of control of the tool and

potentially severe injury.

NOTE:

Eccentricity in the bit rotation may occur while operating

the tool with no load. The tool automatically centers itself

during operation. This does not affect the drilling

precision.

Blow-out bulb (optional accessory)

(Fig. 19)

After drilling the hole, use the blow-out bulb to clean the

dust out of the hole.

Bit diameter

Dust cup 5 6 mm - 14.5 mm

Dust cup 9 12 mm - 16 mm

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Makita HR2800 Manual

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