My washing machine is over thirty years old, a no-name Italian one. Electromechanical controller, so no electronics. The only fault is that the program knob f

My washing machine is over thirty years old, a no-name Italian one. Electromechanical controller, so no electronics. The only fault is that the program knob fell off, I tied it back on with a piece of string ten years ago. It looks like it should keep going for another decade or two.