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 
symbol and 
symbol modes.
1. Switch trigger
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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 
symbol mode.
1. Switch button
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When the tool is in the 
symbol mode, the switch 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
1. Adjusting dial
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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 | Blows per minute | |
adjusting dial | |||
minute | |||
5 | 500 | 2,900 | |
4 | 470 | 2,700 | |
3 | 380 | 2,150 | |
2 | 290 | 1,650 | |
1 | 250 | 1,450 |
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For Model HR5202C, HR5212C
Number on | Revolutions per | Blows per minute | |
adjusting dial | |||
minute | |||
5 | 310 | 2,250 | |
4 | 290 | 2,100 | |
3 | 230 | 1,700 | |
2 | 180 | 1,300 | |
1 | 150 | 1,100 |
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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.
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