Makita HR4040C User Manual download pdf (Page 12)

Chipping/Scaling/Demolition

Set the change lever to the symbol.

Hold the tool firmly with both hands. Turn the tool on and

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.

MAINTENANCE

CAUTION:

• Always be sure that the tool is switched off and

unplugged before attempting to perform inspection or

maintenance.

Replacing carbon brushes

When the resin insulating tip inside the carbon brush is

exposed to contact the commutator, it will automatically shut

off the motor. When this occurs, both carbon brushes should

be replaced. 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.

Use a screwdriver to remove the brush holder cover.

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.

003207

1. Commutator

2. Insulating tip

3. Carbon brush

001146

1. Screwdriver

2. Brush holder cover

003226

1. Screwdriver

2. Brush holder cap

003232

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Makita HR4040C User Manual Page 12