How to Troubleshoot & Replace Whirlpool AP4012072 / 12400035 Flat Style Oven Igniter Kit

Ordered part 

The first thing I did was turn off the gas and electricity to the oven. The igniter was easy to get to by removing the oven racks and then the metal piece at the bottom that separates the oven from the broiler. I then removed piece of sheet metal (2 screws) in the back of the oven that gave me access to the igniter wire harness. The igniter was attached to the burner with 2 screws. The new igniter was an exact fit as the old one. It took less 15 minutes to do the repair. I turned the gas and electricity back, started the oven and the burner lit in about 45 seconds just like it's supposed to do. 

I purchased and installed a new oven igniter. It was an easy fix. 

Followed video instructions and had no difficulty. 

I researched the issue and narrowed it down to a faulty ignitor. I ordered a new ignitor based on model number of oven as well as two new screws as the ones holding the existing ignitor were malformed due, I believe, to heat. I ultimately had to use a hacksaw to remove the misshapen ends of each screw in order to remove the faulty ignitor. Once those were out, I simply removed the old ignitor and replaced it with the new one. Fortunately, there was no need to do any wire stripping as the connector on the new ignitor was an exact match to the existing. 

First tried safety valve then ordered new igniter 

Igniter arrived, I took drawer out and also the bottom of the oven piece. Unscrewed the two screws that hold it in place and cut the wires to install the new igniter. At this point, one of the wires popped into the back space, so I had to move the stove out to reach it and stick it back through. Connected the new igniter and wire connectors and put the drawer and oven bottom back in. It took 20 minutes, but then I spent about 8 minutes cleaning the area out and getting the wire back in. Very easy, but remember to unplug the stove electric cord and turn off the gas valve. 

Replaced oven igniter. Online instruction video was very helpful. 

Replace igniter, had to cut wires and twist them with wire nuts to connect. 

Replaced bad part