Tania P Flushing , NY November 11, 2014 Appliance: Whirlpool Free Standing Gas Range SF368LEPS1 Whirlpool Range Sf368leps1: Stove control knob was broken. How to replace Affresh Stainless Steel Cleaner. Bought new knobs 1 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes