Makita HP2051F instruction manual Operation

For HP2050, HP2050F

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 it to the original position.

For HP2051, HP2051F

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 counterclockwise.

Depth gauge (Fig. 4)

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 grip base. 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 gear housing.

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 switch trigger. Tool speed is increased by increasing pressure on the switch trigger. Release the switch trigger to stop. For continuous opera- tion, pull the switch trigger and then push in the lock but- ton. To stop the tool from the locked position, pull the switch trigger fully, then release it.

A speed control screw is provided so that maximum tool speed can be limited (variable). Turn the speed control screw clockwise for higher speed, and counterclockwise for lower speed.

Lighting up the lamps (HP2050F, HP2051F)

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.

Reversing switch action (Fig. 6)

This tool has a reversing switch to change the direction of rotation. Move the reversing switch lever to the D posi- tion (A side) for clockwise rotation or to the E 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.

Speed change knob (Fig. 7)

Two speed ranges can be preselected with the speed change knob. Turn the speed change knob so that the arrow on the tool body points toward the " I " position on the knob for low speed or " II " position for high speed.

If it is hard to turn the knob, first turn the chuck slightly in either direction and then turn the knob again.

CAUTION:

•Use the speed change knob only after the tool comes to a complete stop. Changing the tool speed before the tool stops may damage the tool.

•Always set the speed change knob to the correct posi- tion. If you operate the tool with the speed change knob positioned halfway between the " I " and " II " position, the tool may be damaged.

Selecting the action mode (Fig. 8)

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.

OPERATION

Hammer drilling operation

When drilling in concrete, granite, tile, etc., move the action mode change lever to the position of g symbol to use "rotation with hammering" action. Be sure to use a tungsten-carbide tipped bit. 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. After drilling the hole, use the blow-out bulb to clean the dust out of the hole. (Fig. 9)

Drilling operation

When drilling in wood, metal or plastic materials, move the action mode change lever to the position of m 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.

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