Help replacing this part

I have found the part, I am just not sure how to remove the knob and remove the old part. I don’t see any screws. How do I remove the old part and install the new part?

Part # 22001530
Washer Model # lat5005aaw
Timer

Thanks

Carefully pull out the center cap (#3 on the [AP250308](http://www.appliancepartspros.com/partsearch/model.aspx?diagram_id=818961&&model_id=26595"break down diagram]break down diagram[/URL]) from the timer knob. Remove the retainer (#11 on the ) and the knob together with the spring and the dial.

Here are the break down diagrams for the Maytag washer http://www.appliancepartspros.com/partsearch/model.aspx?diagram_id=812337&&model_id=26595

Gene.