It appears the machine came with the wrong washer control knob.

I damaged the timer gears trying to figure out the washer control knob. I ordered all necessary parts. It now appears the knob that came on the machine had different gear hobs than the timer. I replaced the timer. The dial then easily slipped on. Then the control knob with the clip attached pushed on to the timer. I had an extra timer knob clip. It was just 93cents so I may need it later. It works better now than it did new.