Anthony S Tiffin , OH February 24, 2015 Appliance: Jenn-Air Range- F/S Std Ddraft Ele 88370 Jenn-Air Range 88370: The bottom heating element in the oven of my jen aire electric range went bad. How to replace Bake Element (Lower Oven). Simply removed the old element and installed the new one. Three screws to get it un- attached, and then two screws to remove the wires from the element. Do-It-Yourself Rating: Repair Time Estimate: 15-30 minutes