Manual Makita hr 160dwa (page 6 of 17) (English, German, Dutch, Danish, French, Italian, Norwegian)

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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.

Hammer drilling operation

Position the bit at the desired location for the hole, then

pull the 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 par-

tially from the hole. By repeating this several times, the

hole will be cleaned out and normal drilling may be

resumed.

CAUTION:

There is tremendous and sudden twisting force exerted

on the tool/bit at the time of hole breakthrough, 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 con-

trol of the tool and potentially severe injury.

Bit grease

Coat the bit shank head beforehand with a small amount

of bit grease (about 0.5– 1 g ; 0.02 – 0.04 oz).

This chuck lubrication assures smooth action and longer

service life.

Using the cold chisel or bull point (Fig. 8)

When using optional cold chisel or bull point, proceed as

follows.

1. Unplug the tool.

2. Remove the side grip from the tool.

3. Set the action mode changing knob to “rotation with

hammering”.

4. Install the chisel on the tool. Refer to “installing or

removing the drill bit” described on the previous

page.

5. Install the chisel adapter (optional accessory) on the

tool so that the chisel is inserted through the chisel

adapter.

6. Rotate the chisel so that the chisel faces toward the

direction suitable for your work. Then secure the

chisel and chisel adapter to the tool using the clamp

screw on the chisel adapter.

7. Set the action mode changing knob to “hammering

only”. Now you can use the chisel.

8. To remove the chisel, follow the installation proce-

dures in reverse.

CAUTION:

Always use “hammering only” action when the chisel

adapter is installed on the tool. If you use “rotation with

hammering” ot “rotation only”, a malfunction and damage

to the tool will result.

Blow-out bulb (Fig.9)

Use the blow-out bulb to clean out the hole.

Dust cup (Fig. 10)

Use the dust cup to prevent dust from falling over the tool

and on yourself when performing overhead drilling opera-

tions. Attach the dust cup to the bit. The size of bits which

the dust cup can be attached to is as follows.

Drilling in wood or metal (Fig. 11)

Use the optional drill chuck assembly (consisting of drill

chuck and chuck adapter assembly). When installing it,

refer to “Installing or removing drill bit” described on the

previous page. Set the action mode changing knob to

“rotation only”. You can drill up to 13 mm diameter in

metal and up to 20 mm diameter in wood.

CAUTION:

Never use “rotation with hammering” when the drill chuck

assembly is installed on the tool. The drill chuck assem-

bly may be damaged.

Also, the drill chuck will come off when reversing the tool.

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 Plus tungsten-carbide tipped bit

• Bull point

• Cold chisel

• Scaling chisel

• Grooving chisel

•Dust cup

• Bit grease (100 g)

• Depth gauge

• Drill chuck

• Chuck key S13

• Blow-out bulb

• Safety goggle

• Various type of Makita genuine batteries and chargers

Bit diameter (mm)

Dust cup 5 6 – 14.5

Dust cup 9 12 – 16

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Makita hr 160dwa Manual

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