Method for operating a hand-guided working apparatus , wherein the working apparatus has: - a movable working tool installation ; - a shaft , wherein the shaft is designed for moving the working tool installation ; - a drive motor system , wherein the drive motor system is designed for driving the shaft ; - wherein the working tool installation , the shaft and the drive motor system at least in part form at least one part of a system at least capable of rotational oscillation; and - a controllable oscillation damping installation , wherein the oscillation damping installation is designed at least for damping and/or for reducing an excitation of at least one oscillation (RS) of the system capable of rotational oscillation and/or excitable by the system capable of rotational oscillation; - wherein the method comprises the steps: a) operating the drive motor system for driving the shaft for moving the working tool installation ; and b) controlling the oscillation damping installation during operation in such a manner that the oscillation (RS) is at least damped and/or an excitation of the oscillation (RS) is reduced, characterized in that - the drive motor system and the oscillation damping installation are at least partially integrated, and - wherein the drive motor system has an electric drive motor , wherein the electric drive motor is designed for driving the shaft , and wherein the drive motor system having the electric drive motor and the oscillation damping installation are at least partially integrated; and - wherein step a) comprises: operating the electric drive motor for driving the shaft for moving the working tool installation ; and wherein step a) and/or step b) comprise/comprises: operating and/or controlling the electric drive motor in such a manner that the oscillation (RS) is at least damped and/or an excitation of the oscillation (RS) is reduced. - a movable working tool installation ; - a shaft , wherein the shaft is designed for moving the working tool installation ; - a drive motor system , wherein the drive motor system is designed for driving the shaft ; - wherein the working tool installation , the shaft and the drive motor system at least in part form at least one part of a system at least capable of rotational oscillation; and - a controllable oscillation damping installation , wherein the oscillation damping installation is designed at least for damping and/or for reducing an excitation of at least one oscillation (RS) of the system capable of rotational oscillation and/or excitable by the system capable of rotational oscillation; - wherein the method comprises the steps: a) operating the drive motor system for driving the shaft for moving the working tool installation ; and b) controlling the oscillation damping installation during operation in such a manner that the oscillation (RS) is at least damped and/or an excitation of the oscillation (RS) is reduced, characterized in that a) operating the drive motor system for driving the shaft for moving the working tool installation ; and b) controlling the oscillation damping installation during operation in such a manner that the oscillation (RS) is at least damped and/or an excitation of the oscillation (RS) is reduced, - the drive motor system and the oscillation damping installation are at least partially integrated, and - wherein the drive motor system has an electric drive motor , wherein the electric drive motor is designed for driving the shaft , and wherein the drive motor system having the electric drive motor and the oscillation damping installation are at least partially integrated; and - wherein step a) comprises: operating the electric drive motor for driving the shaft for moving the working tool installation ; and wherein step a) and/or step b) comprise/comprises: operating and/or controlling the electric drive motor in such a manner that the oscillation (RS) is at least damped and/or an excitation of the oscillation (RS) is reduced. <EOS>