<p>A working machine in which interference between a working device and a machine body can be prevented. When the working device moves to a stop position set in correspondence with each working section selectively mountable on the working device, a control circuit (53) controls operation of the working device to prevent interference between the machine body and the working device. When a failure occurs, a switch (62) capable of selectively switching the stop positions by external operation switches a stop position to one which is not a minimum stop position, and this can prevent interference between the working unit and the machine body even under failure.</p>
