Makita HR4003C User Manual download pdf (Page 6)

OPERATION

Hammer drilling operation

Fig.13

Set the change lever 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:

• When the bit begins to break through concrete or if

the bit strikes reinforcing rods embedded in

concrete, the tool may react dangerously. Maintain

good balance and safe footing while holding the

tool firmly with both hands to prevent dangerous

reaction.

Blow-out bulb (optional accessory)

Fig.14

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

dust out of the hole.

Chipping/Scaling/Demolition

Fig.15

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.

Lubrication

CAUTION:

• This servicing should be performed by Makita

Authorized Service Centers only.

This tool requires no hourly or daily lubrication because

it has a grease-packed lubrication system. It should be

relubricated regularly. Send the complete tool to Makita

Authorized or Factory Service Center for this lubrication

service.

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.

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.

• SDS-Max Carbide-tipped bits

• SDS-Max bull point

• SDS-MAX cold chisel

• SDS-MAX scaling chisel

• SDS-MAX tile chisel

• SDS-MAX clay spade

• Hammer grease

• Bit grease

• Side handle

• Side grip

• Depth gauge

• Blow-out bulb

• Safety goggles

• Carrying case

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Makita HR4003C User Manual Page 6

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