Manual Makita HR 2431 (page 7 of 12) (English, Dutch)

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OPERATING INSTRUCTIONS

Side grip (auxiliary handle) (Fig. 1)

The side grip swings around to either side, allowing

easy handling of the tool in any position. Loosen the

side grip by turning it counterclockwise, swing it to the

desired position and then tighten it by turning clock-

wise.

Installing or removing drill bit

Important:

Always be sure that the tool is switched off and

unplugged before installing or removing the bit.

Clean the bit shank and apply the bit grease (about

0.5–1g) provided to it before installing the bit.

(Fig. 2)

Insert the bit into the tool. Turn the bit and push it in

until it engages. (Fig. 3)

If the bit cannot be pushed in, remove the bit. Pull the

chuck cover down a couple of times. Then insert the

bit again. Turn the bit and push it in until it engages.

(Fig. 4)

After installing, always make sure that the bit is

securely held in place by trying to pull it out.

To remove the bit, pull the chuck cover down all the

way and pull the bit out.

Switch action (Fig. 5)

CAUTION:

Before plugging in the tool, always check to see that

the switch trigger actuates properly and returns to the

‘‘OFF’’ position when released.

To start the tool, simply pull the trigger. Tool speed is

increased by increasing pressure on the trigger.

Release the trigger to stop.

Reversing switch action (Fig. 5)

CAUTION:

•

Always check the direction of rotation before opera-

tion.

•

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.

•

Do not pull the switch trigger when the reversing

switch lever is in the neutral position. If you pull the

trigger forcibly, the switch may be damaged.

This tool has a reversing switch to change the direc-

tion of rotation. Move the lever to the

position

(A position) for clockwise rotation or the

position

(B position) for counterclockwise rotation.

Selecting action mode (Fig. 6)

This tool employs an action mode changing knob.

Select one of the two modes suitable for your work

needs by using this knob. For rotation only, turn the

knob so that the arrow on the knob points toward the

symbol on the tool body. For rotation with

hammering, turn the knob so that the arrow on the

knob points toward the

symbol on the tool body.

CAUTION:

Always set the knob fully to your desired mode

symbol. If you operate the tool with the knob posi-

tioned half-way between the mode symbols, the tool

may be damaged.

Torque limiter

The torque limiter will actuate when a certain torque

level is reached. The motor will disengage from the

output shaft. When this happens, the bit will stop

turning.

CAUTION:

•

As soon as the torque limiter actuates, switch off the

tool immediately. This will help prevent premature

wear of the tool.

•

Hole saws, core bits, diamond core bits, etc. cannot

be used with this tool. They tend to pinch or catch

easily in the hole. This will cause the torque limiter

to actuate too frequently.

Dust extractor attachment and dust bag

(in concrete drilling operation)

With the dust extractor attachment and the dust bag

installed on this tool, you can do your work very

cleanly without dust scattered around in the work site.

CAUTION:

These two accessories can be used only for drilling

holes in concrete. Accordingly, do not use them in

metal or wood drilling operation.

Installing dust extractor attachment

Loosen the clamp screw of the side grip by turning it

counterclockwise.

Insert the coupling rod of the dust extractor attach-

ment through the coupling hole of the side grip until

the rod cannot be pushed in any further.

And then tighten the clamp screw clockwise to secure

the dust extractor attachment.

The coupling rod can be inserted from either side Aor

B. (Fig. 7)

Note:

At some angles of the side grip with the tool, the dust

extractor attachment cannnot be installed on the tool

because of the interference between the attachment

and the tool.

Insert firmly the hose of the dust extractor attachment

into the hose port of the tool until the hose hits against

the bottom of the port to be fixed firmly to the tool.

(Fig. 8)

HR2430 (E) (’99. 12. 14)

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Makita HR 2431 Manual

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