Manual Makita DGA402 (page 11 of 76) (English, German, Dutch, Danish, French, Italian, Portuguese, Spanish)

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CAUTION:

• Make the depth of a single cut up to 5 mm. Adjust

pressure on the tool so that the tool does not slow

down during the operation.

• After operation, always switch off the tool and wait until

the wheel has come to a complete stop before putting

the tool down.

• If the tool is operated continuously until the battery

cartridge has discharged, allow the tool to rest for

15 minutes before proceeding with a fresh battery.

Grinding and sanding operation (Fig. 10)

ALWAYS hold the tool firmly with one hand on housing

and the other on the side handle. Turn the tool on and

then apply the wheel or disc to the workpiece.

In general, keep the edge of the wheel or disc at an angle

of about 15 degrees to the workpiece surface.

During the break-in period with a new wheel, do not work

the grinder in the B direction or it will cut into the

workpiece. Once the edge of the wheel has been rounded

off by use, the wheel may be worked in both A and B

direction.

Operation with abrasive cut-off/diamond

wheel (optional accessory) (Fig. 11)

The direction for mounting the lock nut and the inner

flange varies by wheel thickness.

Refer to the table below. (Fig. 12)

WARNING:

• When using an abrasive cut-off/diamond wheel, be

sure to use only the special wheel guard designed for

use with cut-off wheels. (In European countries, when

using a diamond wheel, the ordinary guard can be

used.)

• NEVER use cut-off wheel for side grinding.

• Do not “jam” the wheel or apply excessive pressure. Do

not attempt to make an excessive depth of cut.

Overstressing the wheel increases the loading and

susceptibility to twisting or binding of the wheel in the

cut and the possibility of kickback, wheel breakage and

overheating of the motor may occur.

• Do not start the cutting operation in the workpiece. Let

the wheel reach full speed and carefully enter into the

cut moving the tool forward over the workpiece surface.

The wheel may bind, walk up or kickback if the power

tool is started in the workpiece.

• During cutting operations, never change the angle of

the wheel. Placing side pressure on the cut-off wheel

(as in grinding) will cause the wheel to crack and break,

causing serious personal injury.

• A diamond wheel shall be operated perpendicular to

the material being cut.

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.

The tool and its air vents have to be kept clean. Regularly

clean the tool’s air vents or whenever the vents start to

become obstructed. (Fig. 13)

Replacing carbon brushes (Fig. 14)

Remove and check the carbon brushes regularly. Replace

when they wear down to the limit mark. Keep the carbon

brushes clean and free to slip in the holders. Both carbon

brushes should be replaced at the same time. Use only

identical carbon brushes.

Insert the top end of slotted bit screwdriver into the notch

in the tool and remove the holder cap cover by lifting it up.

(Fig. 15)

Use a screwdriver to remove the brush holder caps. Take

out the worn carbon brushes, insert the new ones and

secure the brush holder caps. (Fig. 16)

Reinstall the holder cap cover on the tool.

To maintain product SAFETY and RELIABILITY, repairs,

any other maintenance or adjustment should be

performed by Makita Authorized Service Centers, 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.

If you need any assistance for more details regarding

these accessories, ask your local Makita Service Center.

• Wheel guard (wheel cover) for depressed center

wheel/multi disc

• Wheel guard (wheel cover) for abrasive cut-off wheel/

diamond wheel

• Depressed center wheels

• Abrasive cut-off wheels

•Multi discs

• Diamond wheels

• Wire cup brushes

• Wire bevel brush 85

• Abrasive discs

• Inner flange

• Lock nut for depressed center wheel/abrasive cut-off

wheel/multi disc/diamond wheel

• Lock nut for abrasive disc

• Lock nut wrench

• Side grip

• Makita genuine battery and charger

NOTE:

• Some items in the list may be included in the tool

package as standard accessories. They may differ

from country to country.

Noise

ENG905-1

The typical A-weighted noise level determined according

to EN60745:

Model DGA450

Sound pressure level (L

): 74 dB (A)

Uncertainty (K): 3 dB (A)

The noise level under working may exceed 80 dB (A).

Model DGA452

Sound pressure level (L

): 76 dB (A)

Uncertainty (K): 3 dB (A)

The noise level under working may exceed 80 dB (A).

Wear ear protection.

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Makita DGA402 Manual

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