Makita DHR164Z Instruction Manual Download

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In this situation, release the trigger switch on the tool
and stop the application that caused the tool to become
overloaded. Then pull the trigger switch again to
restart.
If the tool does not start, the battery is overheated. In
this situation, let the battery cool before pulling the trig-
ger switch again.

• Low battery voltage:

The remaining battery capacity is too low and the tool
will not operate. In this situation, remove and recharge
the battery.

Indicating the remaining battery capacity (Fig. 3)

(Only for battery cartridges with “B” at the end of the
model number.)
Press the check button on the battery cartridge to
indicate the remaining battery capacity. The indicator
lamps light up for few seconds.

015658

NOTE:

• Depending on the conditions of use and the ambient

temperature, the indication may differ slightly from the
actual capacity.

Switch action (Fig. 4)

CAUTION:

• Before inserting the battery cartridge into 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.

Lighting up the lamp (Fig. 5)

CAUTION:

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

directly.

Pull the switch trigger to light up the lamp. The lamp
keeps on lighting while the switch trigger is being pulled.
The light automatically goes out 10 – 15 seconds after
the switch trigger is released.

NOTE:

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

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

• Do not use thinner or gasoline to clean the lamp. Such

solvents may damage it.

Reversing switch action (Fig. 6)

This tool has a reversing switch to change the direction
of rotation. Depress the reversing switch lever from the A
side for clockwise rotation or from the B side for
counterclockwise rotation.
When the reversing switch lever is in the neutral position,
the switch trigger cannot be pulled.

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.

• When not operating the tool, always set the reversing

switch lever to the neutral position.

Selecting the action mode

Rotation with hammering (Fig. 7)

For drilling in concrete, masonry, etc., depress the lock
button and rotate the action mode changing knob to the

symbol. Use a tungsten-carbide tipped bit.

Rotation only (Fig. 8)

For drilling in wood, metal or plastic materials, depress
the lock button and rotate the action mode changing
knob to the

symbol. Use a twist drill bit or wood bit.

CAUTION:

• Do not rotate the action mode changing knob when the

tool is running. The tool will be damaged.

• To avoid rapid wear on the mode change mechanism,

be sure that the action mode changing knob is always
positively located in one of the action mode positions.

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 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.

ASSEMBLY

CAUTION:

• Always be sure that the tool is switched off and the

battery cartridge is removed before carrying out any
work on the tool.

Indicator lamps

Remaining

capacity