Manual Makita HP1640 Impact Drill

Manual

5

Lighting up the lamps (Fig. 2)

For Model HP1640F, HP1641F

CAUTION:

• Do not look in the light or see the source of light

directly.

To turn on the lamp, pull the trigger. Release the trigger

to turn it off.

NOTE:

• Use a dry cloth to wipe the dirt off the lens of lamp. Be

careful not to scratch the lens of lamp, or it may lower

the illumination.

• Never use gasoline or thinner to clean the lens of the

lamp, or it will be damaged.

Reversing switch action (Fig. 3)

This tool has a reversing switch to change the direction of

rotation. Move the reversing switch to the position (A

side) for clockwise rotation or the position (B side) for

counterclockwise rotation.

CAUTION:

• Always check the direction of rotation before operation.

• Use the reversing switch only after the tool comes to a

complete stop. Changing the direction of rotation

before the tool stops may damage the tool.

• If the switch trigger can not be depressed, check to see

that the reversing switch is fully set to position (A

side) or (B side).

Selecting the action mode (Fig. 4)

This tool has an action mode change lever. For rotation

with hammering, slide the action mode change lever to

the right (

g symbol). For rotation only, slide the action

mode change lever to the left (

m symbol).

CAUTION:

• Always slide the action mode change lever all the way

to your desired mode position. If you operate the tool

with the lever positioned halfway between the mode

symbols, the tool may be damaged.

ASSEMBLY

CAUTION:

• Always be sure that the tool is switched off and

unplugged before carrying out any work on the tool.

Installing side grip (auxiliary handle) (Fig. 5)

Always use the side grip to ensure operating safety.

Install the side grip on 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.

NOTE:

• The side grip cannot swing 360° when the depth gauge

is installed.

Installing or removing drill bit

For Model HP1640, HP1640F (Fig. 6)

To install the bit, place it in the chuck as far as it will go.

Tighten the chuck by hand. Place the chuck key in each

of the three holes and tighten clockwise. Be sure to

tighten all three chuck holes evenly.

To remove the bit, turn the chuck key counterclockwise in

just one hole, then loosen the chuck by hand.

After using the chuck key, be sure to return to the original

position.

For Model HP1641, HP1641F (Fig. 7)

Hold the ring and turn the sleeve counterclockwise to

open the chuck jaws. Place the bit in the chuck as far as it

will go. Hold the ring firmly and turn the sleeve clockwise

to tighten the chuck.

To remove the bit, hold the ring and turn the sleeve coun-

terclockwise.

Depth gauge (Fig. 8)

The depth gauge is convenient for drilling holes of uni-

form 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 tool body.

OPERATION

Hammer drilling operation (Fig. 9)

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 embed-

ded 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

g 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 pres-

sure gives best results. Keep the tool in position and pre-

vent 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) (Fig. 10)

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 of

m sym-

bol 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 excep-

tions are iron and brass which should be drilled dry.

Rating

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