Mary M Cullman , AL September 17, 2017 Appliance: Whirlpool Electric Range RS6100XVW0 Whirlpool Range Rs6100xvw0: Needed a knob. How to replace Timer Knob (Control Panel). I was able to purchase from AppliancePartsPros.com. Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes