Pulled oven away from wall. Closed gas valve. Disconnected power. Opened stovetop to release trace gas and confirm gas closed. Removed paneling at bottom of oven cavity. Disconnected igniter electrical from wiring via connector under oven in drawer cavity. Removed igniter, but this was difficult given orientation and access to two screws/nuts. Needed to first disconnect gas pipe the igniter was connected to in order to improve access. Once removed, it was easy to replace with new igniter and put everything back together with care.