Rebecca F Uniondale , IN July 02, 2016 Appliance: Whirlpool Electric Range RF315PXYW0 Whirlpool Range Rf315pxyw0: I destroyed a knob on my stove which made it unattractive and inconvenient!. How to replace Knob, Infinite. I went online and looked up the part, which was pretty easy, ordered it and it was here the next day! So easy to do and in time for the holiday! Thanks so much!! Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes