Makita HR4001C, Instruction Manual

8

FUNCTIONAL DESCRIPTION

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

unplugged before adjusting or checking function on the
tool.

Switch action 

FOR MODEL HR4011C

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. Release
the switch trigger to stop. 

(Fig. 1)

FOR MODELS HR4010C AND HR4001C

Trigger switch 

CAUTION:
• Before plugging in the tool, always check to see that

the switch trigger actuates properly and returns to the
“OFF” position when released. 

• This switch functions when setting the tool in 

 sym-

bol and 

 symbol modes. 

To start the tool, simply pull the switch trigger. Release
the switch trigger to stop. 

(Fig. 1)

Slide switch

CAUTION:
• Before plugging in the tool, always check to see that

the tool is switched off. 

• This switch functions only when setting the tool in 

symbol action mode. 

When using the tool in the hammering mode for a long
time, the slide switch is available. To start the tool, push
the “I (ON)” side of the switch lever. To stop the tool, push
the “O (OFF)” side of the switch lever. 

(Fig. 2)

Speed change (Fig. 3) 

The revolutions and blows per minute can be adjusted
just by turning the adjusting dial. The dial is marked 1
(lowest speed) to 5 (full speed). 
Refer to the table below for the relationship between the
number settings on the adjusting dial and the revolutions/
blows per minute. 

CAUTION:
• If the tool is operated continuously at low speeds for a

long time, the motor will get overloaded, resulting in
tool malfunction. 

• The speed adjusting dial can be turned only as far as 5

and back to 1. Do not force it past 5 or 1, or the speed
adjusting function may no longer work. 

Selecting the action mode 

Rotation with hammering (Fig. 4 & 5) 

For drilling in concrete, masonry, etc., depress the lock
button and rotate the change lever so that the pointer
points to the 

 symbol. Use a tungsten-carbide tipped

bit. 

Hammering only 

FOR MODELS HR4001C AND HR4010C (Fig. 6) 

For chipping, scaling or demolition operations, depress
the lock button and rotate the change lever so that the
pointer points to the 

 symbol. Use a bull point, cold

chisel, scaling chisel, etc. 

For long time hammering (FOR MODELS HR4001C
AND HR4010C ONLY) (Fig. 7) 

For chipping, scaling or demolition operations, depress
the lock button and rotate the change lever so that the
pointer points to the 

 symbol. Use a bull point, cold

chisel, scaling chisel, etc. 

CAUTION:
• When using the tool in the 

 symbol mode, the switch

trigger does not work and only the slide switch works. 

FOR MODEL HR4011C (Fig. 8) 

For chipping, scaling or demolition operations, depress
the lock button and rotate the change lever so that the
pointer points to the 

 symbol. Use a bull point, cold

chisel, scaling chisel, etc. 

CAUTION:
• Do not rotate the change 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 is always positively
located in one of the two or three action mode posi-
tions. 

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. 

Indicator lamp (Fig. 9) 

The green power-ON indicator lamp lights up when the
tool is plugged. If the indicator lamp does not light up, the
mains cord or the controller may be defective. The indica-
tor lamp is lit but the tool does not start even if the tool is
switched on, the carbon brushes may be worn out, or the
controller, the motor or the ON/OFF switch may be defec-
tive. 
The red service indicator lamp lights up when the carbon
brushes are nearly worn out to indicate that the tool
needs servicing. After approx. 8 hours of use, the motor
will automatically be shut off. 

Number on 

adjusting dial

Revolutions 

per minute

Blows 

per minute

5

480

2,750

4

440

2,550 

3

360

2,050

2

270

1,550

1

230

1,350