Makita HR3000C instruction manual Operating Instructions

OPERATING INSTRUCTIONS

Installing or removing 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 provided to it before installing the bit. (Fig. 1)

Insert the bit into the tool. Turn the bit and push it in until it engages. (Fig. 2)

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. 3) 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.

(Fig. 4)

Selecting action mode

When selecting an action mode, first set the change lever and the shift lever to the position shown in Fig. 5. Then proceed as follows.

Rotation with hammering (Fig. 6 & 7)

For drilling in concrete, masonry, etc., depress the lock button and rotate the change lever so that the pointer points to the hsymbol. Use a tungsten- carbide tipped bit.

Hammering only (Fig. 6 & 8)

For chipping, scaling or demolition operations, depress the lock button and rotate the change lever so that the pointer points to the g symbol. Use a bull point, cold chisel, scaling chisel, etc.

Rotation only (Fig. 6 & 9)

For drilling in wood, metal or plastic materials, rotate the shift lever so that the symbol is aligned with the pointer on the change lever. Use a twist drill bit or wood bit.

CAUTION:

•Do not rotate the change lever and/or the shift lever when the tool is running under load. The tool will be damaged.

•To avoid rapid wear on the mode change mechanism, be sure that the change lever and/or the shift lever is always positively located in one of the three action mode positions.

•The action mode cannot be changed directly from “hammering only” to “rotation only” or from “rotation only” to “hammering only”. First set the change lever and the shift lever to “rotation with hammering” mode position shown in Fig. 5. Then set them to the position for “hammering only” or “rotation only”.

Bit angle

(when chipping, scaling or demolishing)

Important:

Always be sure that the tool is switched off and unplugged before changing the bit angle.

The bit can be secured at 12 different angles. To change the bit angle, depress the lock button and rotate the change lever so that the pointer points to the Osymbol. Turn the bit to the desired angle. (Fig. 10)

Depress the lock button and rotate the change lever so that the pointer points to the gsymbol.

Then make sure that the bit is securely held in place by turning it slightly. (Fig. 11)

Side grip (Fig. 12)

CAUTION:

•Always use the side grip to ensure operating safety when drilling in concrete, masonry, etc.

•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.

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 clockwise.

Switch action (Fig. 13)

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. Release the trig- ger to stop.

Speed change (Fig. 14)

The revolutions and blows per minute can be adjusted just by turning the adjusting dial. The dial is marked 1 (lowest speed) to 6 (full speed). Refer to the table below for the relationship between the number settings on the adjusting dial and the revolutions/blows per minute.

Number on	Revolutions per	Blows per
adjusting dial	minute	minute
6	720	3,300
5	690	3,150
4	590	2,700
3	490	2,250
2	390	1,800
1	360	1,650

Hammer drilling operation (Fig. 15)

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.

Set the change lever and the shift lever to thehsymbol. Position the bit at the 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 slip- ping 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 from the hole. By repeating this several times, the hole will be cleaned out.

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