4.-. Operation
4.1. -Starting Operation
f Observe correct mains voltage! The voltage
of the power source must agree with the
voltage specified on the nameplate of the
machine. Power tools marked with 230 V
can also be operated with 220 V.
Setting the Operating Mode
With the selector switch for drilling/hammer drilling
9 , the operating mode of the machine is selected.
To change the operating mode, press the release
button 8 and turn the drilling/hammer drilling se-
lector switch 9 to the desired position until it can
be heard to latch.
Note: Only change the mode of operation while
disconnected from the machine! Otherwise you
may damage the machine.
Position for hammer
drilling in concrete or
stone
HD5K, HD5BK, MH6K: 8'
Position for drilling with-
out impact in wood, met-
al, ceramic and plastic as
well as for screwdriving
and thread cutting.
Position for adjustment
of the chiseling position
Position for chiselling
HD5K, HD5BK, MH6K: 8'
Reposition Chiseling
Vario-lock (HD9CK)
The chisel 12 may be positioned at angles.
Thus, the optimal working position can be set
for each application.
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Insert the chisel in the tool holder
- Push the ring 18 forward and turn the chisel in
the desired position.
- Release the ring 18 to lock the position.
Reversing the Rotational Direction
The rotational direction switch 5 is used to re-
verse the rotational direction of the machine.
However, this is not possible with the On/Off
switch 7 actuated.
Right rotation: Turn the selector switch for
drilling/hammer drilling 5 on both sides to
the stop in the position
Left rotation: Turn the selector switch for
drilling/hammer drilling 5 on both sides to
the stop in the position
Set the direction of rotation for hammer drilling,
drilling and chiselling always to right rotation.
Switching On and Off
To start the machine, press the On/Off switch 7.
To lock the On/Off switch, keep it pressed and
additionally push the lock-on button 6.
To switch off the machine, release the On/Off
switch 7. When the On/Off switch 7 is locked,
press it first and then release it.
Setting the Speed/Impact Rate
The speed/impact rate of the switched on pow-
er tool can be variably adjusted, depending on
how far the On/Off switch 7/10 is pressed.
Light pressure on the On/Off switch 7/10 results
in low speed/impact rate. Further pressure on
the switch increases the speed/impact rate.
Safety Clutch
f If the tool insert becomes caught or jammed,
the drive to the drill spindle is interrupted.
Because of the forces that occur, always hold
the power tool firmly with both hands and pro-
vide for a secure stance.
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