Makita HR4003C Instruction Manual page 7

SAVE THESE INSTRUCTIONS.
WARNING: DO NOT let comfort or famil-
iarity with product (gained from repeated
use) replace strict adherence to safety
rules for the subject product. MISUSE or
failure to follow the safety rules stated in
this instruction manual may cause serious
personal injury.
FUNCTIONAL
DESCRIPTION
CAUTION:
• Always be sure that the tool is switched off and
unplugged before adjusting or checking function
on the tool.
Switch action
CAUTION:
• Before plugging in the tool, always check to see
that the switch trigger actuates properly and
returns to the "OFF" position when released.
Switch trigger
This switch functions when setting the tool in
and symbol modes.
► Fig.1: 1. Switch trigger
To start the tool, simply pull the switch trigger. Release
the switch trigger to stop.
Switch button
This switch functions when setting the tool in
mode.
► Fig.2: 1. Switch button
When the tool is in the
button projects out and lights in red.
To start the tool, press the switch button. The switch
light turns in green.
To stop the tool, press the switch button again.
Speed change
► Fig.3: 1. Adjusting dial
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 revolu-
tions/blows per minute.
symbol
symbol
symbol mode, the switch
For Model HR4003C, HR4013C
Number on
adjusting dial
5
4
3
2
1
For Model HR5202C, HR5212C
Number on
adjusting dial
5
4
3
2
1
For model HR4013C, HR5212C only
NOTE:
• Blows at no load per minute becomes smaller
than those on load in order to reduce vibration
under no load, but this does not show trouble.
Once operation starts with a bit against con-
crete, blows per minute increase and get to the
numbers as shown in the table. When tempera-
ture is low and there is less fluidity in grease,
the tool may not have this function even with the
motor rotating.
CAUTION:
• If the tool is operated continuously at low
speeds for a long time, the motor may get over-
loaded, 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
CAUTION:
• Do not rotate the change lever when the tool is
running. The tool will be damaged.
• To avoid rapid wear on the mode change mech-
anism, be sure that the change lever is always
positively located in one of the action mode
positions.
Hammer drilling mode
► Fig.4: 1. Change lever 2. Pointer
For drilling in concrete, masonry, etc., rotate the change
lever to the symbol. Use a tungsten-carbide tipped
bit.
Hammering mode (Switch trigger
mode)
► Fig.5: 1. Change lever 2. Pointer
For chipping, scaling or demolition operations, rotate
the change lever to the
chisel, scaling chisel, etc.
7 ENGLISH
Revolutions per
Blows per minute
minute
500 2,900
470 2,700
380 2,150
290 1,650
250 1,450
Revolutions per
Blows per minute
minute
310 2,250
290 2,100
230 1,700
180 1,300
150 1,100
symbol. Use a bull point, cold