Starting Operation

To switch on the power tool, push the right or left on/off switch (21) all the way forward and let it go.

Note: When switching on, the on/off switch (21) needs to be pressed forwards for longer than when switching off in order to prevent unintentional activation.

To switch off the power tool, push the right or left on/off switch (21) all the way forward again and let it go.

To switch on the power tool, press the lock-off button (25) next to the symbol  first, thereby deactivating it. Then press the on/off switch (21) and keep it pressed.

You can variably adjust the stroke rate of the power tool when it is on by pressing in the on/off switch (21) to varying extents.

Applying light pressure to the on/off switch (21) results in a low stroke rate. Applying increasing pressure to the switch increases the stroke rate.

The maximum stroke rate depends on the stroke rate level set in the user interface.

To switch off the power tool, release the on/off switch (21). Activate the lock-off button (25) by pressing the lock-off button next to the symbol .

The integrated impact shutdown switches the power tool off as soon as it hits the floor.

If the impact shutdown is triggered, the status indicator (5) will flash red. Information regarding the cause of the shutdown can be found in the Bosch Toolbox app.

Switching the power tool on again:

• GST 18V‑155 SC: Push the right or left on/off switch (21) all the way forward twice and let it go.
• GST 18V‑155 BC: Press and hold the on/off switch (21).

You can deactivate the impact shutdown using the Bosch Toolbox app.