There are other descriptions here, but here's my story. I pulled the oven door off (pull straight up on it, it will come off) and removed the bottom warming drawer (there are plastic tabs on the outside of each side of the drawer--slide them and pull, several times on each side). I turned off the gas from behind the stove and unplugged the range, undid two screws at the back of the oven floor and lifted it forward and up. The burner is visible, but here is the hard part. The bolts holding the ignitor are underneath it and angled such that it is almost impossible to get any type of tool near them. I have small hands, and that helped. The screws are a bolt-head type or hex head, and I found that a one quarter inch open end wrench sort of fit. 6mm was too small and 7mm was too large. I managed to get the screws loosened after much struggling and manuvering, with half my body inside the oven, and once it was out, I was able to reach in from where the warming drawer was and unscrew the two wire leads attached from the ignitor to the power. They are held by plastic screwcaps. The reverse process was self explanatory, except that you should put the new ignitor in the oven and feed the wires down through the back panel, then attach the screwcaps to join the wires to the leads. Then go back in the oven and attach the ignitor, back screw first, and tighten it all the way, since you may not be able to reach it once the front screw is in. Also, use the screws that come with the new ignitor, since they are easier to start than the old ones. Tighten the screws as tight as you can get them so the ignitor doesn't wiggle, then turn the gas back on and plug it in, and test it before you put it back to gether. Mine worked, but it was a pain to do, kind of like working on an old car that wasn't designed to be fixed easily. Good luck.
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