Knob and timer worn/broken where engaging.

Removed clip from old knob with needle nose pliers and removed knob. Pulled indicator dial off of the timer shaft. Removed three screws with nut driver from top of back panel and opened control panel.
One screw holds the timer mechanism in place. Unplugged wiring harness from timer and removed screw. Removed timer. There are tabs that the timer sits in. Make sure you have reinstalled the timer correctly in place.
Installed new timer and replaced screw. Closed control panel and replaced the three screws in back panel.
Slid indicator guide down over timer shaft making sure to line up the tab on dial with notch in nylon shaft. Slide know over metal shaft and replace the clip which holds the knob in place. Operate washer according to instructions. In the future be sure to turn your knob slowly when setting the wash cycle. Turning it too quickly can wear out or break the parts once more.