Floor cleaning machine and method for operating a floor cleaning machine

A method for operating a floor cleaning machine, said method comprising:

• providing a floor cleaning machine comprising:
• a base;
• a rocker which is arranged at the base via a first pivot bearing for pivotal movement about a first pivot axis;
• a sweeping roller which is arranged at the rocker via a rotary bearing for rotational movement about a rotary axis;
• a motor device for rotatably driving the sweeping roller;
• and
• a traction drive having a traction member for transmitting torque from the motor device to the sweeping roller;
• wherein the traction member comprises a load-side section;
• wherein a lever is arranged at the base via a second pivot bearing for pivotal movement about a second pivot axis;
• wherein the lever is articulated to the rocker;
• wherein a deflection element for the traction member is arranged at the lever;
• and
• wherein the traction member is guided on the deflection element in the load-side section, the method comprising:
• mechanically controlling an action of the sweeping roller on a floor to be cleaned;
• wherein a pivotal position of the lever on the second pivot bearing is predetermined via an application of force on the load-side section of the traction member,
• wherein the pivotal position of the lever on the second pivot bearing predetermines the position of the rocker on the first pivot bearing, and
• wherein the lever comprises a first web which is articulated to the base via the second pivot bearing, and comprises a second web which is connected to the first web via a fourth pivot bearing for pivotal movement about a fourth pivot axis and which is oriented transversely to the first web.