Oven would not heat but Broiler would

Turn off the gas supply and unplug the power cord. Remove the screw on the back plate for the metal tab that covers the valve. Bend the tab up to expose the valve. Remove the gas line that feeds the broiler with an adjustable wrench. Remove the mounting screw for the valve. Loosen the valve inlet gas line fitting with an adjustable wrench. Lift the valve out. Reverse the steps to install the new valve.