A manual machine tool having a drive motor, a gearbox and a tool holder, wherein a motor output of the drive motor having a gearbox drive of the gearbox and a gearbox output of the gearbox are coupled to the tool holder in a manner which permits rotation, wherein the manual machine tool has an actuating device to adjust the gearbox between its switch positions, wherein the actuating device has an actuating part which is movably mounted between actuating positions relative to a machine housing of the manual machine tool and which can be manually actuated, which actuating part is coupled to the at least one switching gear element to set the switch positions. The actuating device has a locking arrangement with locking indentations arranged on a locking structure to lock the actuating part in the actuating positions, which locking indentations are assigned to actuating positions of the actuating part, and with a locking part to engage in the locking indentations.