Functional Description; Speed Change - Makita HR4000C Instruction Manual

FUNCTIONAL
DESCRIPTION
1. Switch trigger
1
1. Adjusting dial
6
CAUTION:
• Always be sure that the tool is switched off and
unplugged before adjusting or checking function on the
tool.
Switch action
003112
CAUTION:
1
• 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.

Speed change

003119
The revolutions and blows per minute can be adjusted just by
turning the adjusting dial. The dial is marked 1 (lowest
speed) to 6 (full speed).
Refer to the table below for the relationship between the
number settings on the adjusting dial and the revolutions/
blows per minute.
Number on adjusting dial
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 6
and back to 1. Do not force it past 6 or 1, or the speed
adjusting function may no longer work.
Revolutions per minute
6
5
4
3
2
1
Blows per minute
450
430
370
310
250
230
2,500
2,350
2,050
1,700
1,400
1,250