Makita HP1641 HP1641K User Manual (English)

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OPERATION

Hammer drilling operation

009244

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.

When drilling in concrete, granite, tile, etc., move the

action mode changing lever to the position of

symbol

to use "rotation with hammering" action.

Be sure to use a tungsten-carbide tipped bit.

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.

Blow-out bulb (optional accessory)

001302

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

dust out of the hole.

Drilling operation

When drilling in wood, metal or plastic materials, move

the action mode changing lever to the position

symbol to use "rotation only" action.

Drilling in wood

When drilling in wood, the best results are obtained with

wood drills equipped with a guide screw. The guide

screw makes drilling easier by pulling the bit into the

workpiece.

Drilling in metal

To prevent the bit from slipping when starting a hole,

make an indentation with a center-punch and hammer at

the point to be drilled. Place the point of the bit in the

indentation and start drilling.

Use a cutting lubricant when drilling metals. The exceptions

are iron and brass which should be drilled dry.

CAUTION:

• Pressing excessively on the tool will not speed up

the drilling. In fact, this excessive pressure will only

serve to damage the tip of your bit, decrease the

tool performance and shorten the service life of the

tool.

• There is a tremendous force exerted on the tool/bit

at the time of hole break through. Hold the tool

firmly and exert care when the bit begins to break

through the workpiece.

• A stuck bit can be removed simply by setting the

reversing switch to reverse rotation in order to back

out. However, the tool may back out abruptly if you

do not hold it firmly.

• Always secure small workpieces in a vise or similar

hold-down device.

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 or Factory Service Centers, always

using Makita replacement parts.

1. Blow-out bulb

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Makita HP1641 HP1641K Specifications

General

Type	Hammer Drill
Voltage	240 V
Power	680 W
No Load Speed	0 - 2800 rpm
Drilling Capacity (Wood)	30 mm
Drilling Capacity (Steel)	13 mm
Drilling Capacity (Masonry)	16 mm
Input Wattage	680 W
Power Source	Corded Electric
Impact Rate	0-44800 bpm
Chuck Capacity	13 mm
Chuck Size	13mm