# Start-up

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The operating mode of the power tool is selected using the impact/mode selector switch (6).

- To change the operating mode, turn the impact/mode selector switch (6) to the required position.

Note: Only change the operating mode when the power tool is switched off. Otherwise, the power tool may become damaged.

| Position for hammer drilling into concrete or stone
| Position for drilling without impact in wood, metal, ceramic and plastic and for screwdriving
| Vario-Lock position for adjusting the chisel position The impact/mode selector switch (6) will not engage in this position.
| Position for chiselling

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The rotational direction switch (8) is used to change the rotational direction of the power tool. However, this is not possible while the on/off switch (9) is being pressed.

- Only operate the rotational direction switch (8) when the power tool is not in use.

Always set the rotational direction to clockwise rotation for hammer drilling, drilling and chiselling.

- Clockwise: To drill and to drive in screws, press the rotational direction switch (8) all the way to the left.
- Anticlockwise: To loosen and unscrew screws and nuts, press the rotational direction switch (8) all the way to the right.

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- To switch on the power tool, press the on/off switch (9).

The worklight (12) lights up when the on/off switch (9) is lightly or fully pressed, allowing the work area to be illuminated in poor lighting conditions.

- To switch off the power tool, release the on/off switch (9).

For low temperatures, the power tool reaches the full hammer/impact capacity only after a certain time.

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You can adjust the speed/impact rate of the power tool when it is on by pressing in the on/off switch (9) to varying extents.

Applying light pressure to the on/off switch (9) results in a low rotational speed/impact rate. Applying increasing pressure to the switch increases the speed/impact rate.

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You can lock the chisel in 42 different positions, so you can select the optimum working position for each task.

- Insert the chisel into the tool holder.
- Turn the impact/mode selector switch (6) to the "Vario-Lock" position.
- Turn the application tool to the required chisel position.
- Turn the impact/mode selector switch (6) to the "chiselling" position. With this, the tool holder is locked.
- Set the rotational direction for chiselling to clockwise.