Speed Change - Makita HR4003C Instruction Manual

Speed change

1
014029
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.
For Model HR4003C, HR4013C
Number on
Revolutions per
adjusting dial
minute
5
4
3
2
1
014134
For Model HR5202C, HR5212C
Number on
Revolutions per
adjusting dial
minute
5
4
3
2
1
014872
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 concrete, blows
per minute increase and get to the numbers as
shown in the table. When temperature 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 overloaded,
resulting in tool malfunction.
1. Adjusting dial
Blows per minute
500 2,900
470 2,700
380 2,150
290 1,650
250 1,450
Blows per minute
310 2,250
290 2,100
230 1,700
180 1,300
150 1,100
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
•
mechanism, be sure that the change lever is
always positively located in one of the action mode
positions.
Hammer drilling mode
1
2
014022
For drilling in concrete, masonry, etc., rotate the change
lever to the symbol. Use a tungsten-carbide tipped bit.
Hammering mode (Switch trigger mode)
1
2
014024
For chipping, scaling or demolition operations, rotate the
change lever to the
chisel, scaling chisel, etc.
Hammering mode (Switch button mode)
2
1
014023
For continuous
operations, rotate the change lever to the
5
1. Change lever
2. Pointer
1. Change lever
2. Pointer
symbol. Use a bull point, cold
1. Change lever
2. Pointer
chipping, scaling or demolition
symbol.