Makita HR4003C Instruction Manual page 5

For Model HR5202C, HR5212C
Number on
Revolutions per
adjusting dial
minute
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
1
2
► 1. Change lever 2. Pointer
For drilling in concrete, masonry, etc., rotate the change
lever to the symbol. Use a tungsten-carbide tipped
bit.
Blows per minute
310 2,250
290 2,100
230 1,700
180 1,300
150 1,100
Hammering mode (Switch trigger mode)
1
2
► 1. Change lever 2. Pointer
For chipping, scaling or demolition operations, rotate
the change lever to the
chisel, scaling chisel, etc.
Hammering mode (Switch button mode)
2
1
► 1. Change lever 2. Pointer
For continuous chipping, scaling or demolition opera-
tions, rotate the change lever to the
► 1. Switch button
The switch button projects out and lights in red.
Use a bull point, cold chisel, scaling chisel, etc.
NOTE:
• When using the tool in the
switch trigger does not work but only the switch
button works.
5 ENGLISH
symbol. Use a bull point, cold
symbol.
1
symbol mode, the