Motor-powered machine tool, in particular a hand-held machine tool

A motor-powered machine tool, comprising:

• a housing;
• a tubular tool receptacle;
• a drum-like tool change magazine having a plurality of tool chambers, the tool change magazine arranged within the housing and configured to selectively position each of the tool chambers in a change position in which a longitudinal axis of the positioned tool chamber is coincident with a longitudinal axis of the tool receptacle;
• a sliding element configured to be moved relative to the tool receptacle in a direction extending parallel to the longitudinal axis of the tool receptacle and configured to act upon a tool from the tool change magazine and slide the tool into the tool receptacle and slide the tool from the tool receptacle back into the tool change magazine;
• a gear-mechanism device coupled to the sliding element and including at least one gearwheel, wherein rotational movement of the at least one gearwheel is converted into a linear movement of the sliding element;
• and
• an adjusting element mechanically coupled to the at least one gearwheel for purely mechanical actuation of the at least one gearwheel by the adjusting element,
• wherein manual actuation of the adjusting element causes the adjusting element to rotate the at least one gearwheel.