Push-Button Maytag Washers&Dryers
Michael the A160S and the A900S Suds-Saver PB MTs did use the same small knob on the top right side of the control panel for the SS operation, your A900S has this knob.
Mike congratulations on your cool new Washer and Dryer, when the little female terminals start breaking and come loose from the edge of the printed board it is best to solder them directly to the circuit board, Maytag always had a lot of problems with these terminals as these dryers aged, this type of connection was a poor way of connecting wires to a circuit board, manufacturers would never make something this poorly today as they are now much better with electronic controls used on major appliances.