Remove the oven racks.
If the bake element is hidden under a bottom panel, remove the thumb screws that hold the panel in place. If a screw is stuck, use a slot screwdriver to free it.
Lift the back of the panel slightly and push back to release the bottom oven panel from the retaining lip. Push down on a front corner of the bottom panel so it tips enough that you can grasp it. Work the bottom oven panel up and out of the oven.
Remove the thumb screws holding the bottom panel in place.
Tip: If you can't complete this repair because the door gets in your way, remove the door, following instructions in your owner's manual. You might need help lifting the door off the oven. Set the door on a pad.