Adam B Natick , MA February 19, 2021 Appliance: Model JGSS66SELSS Knob was not turning gas off, burner valve was stripped/broken Identified likely broken part (burner valve) on appliance blow out diagram. Ordered part and it arrived next business day which was great. DIY fix took about 1.5hrs, mostly because of disassembly/reassembly of range top. 1 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: 1-2 hours