Hi Folks, I've been trying to get my John Deere STX 38 started. It has a Kohler 13 Command Engine and Hydro transmission. It turns over but won't start. There is no spark. I've checked out all of the circuits with a multi-meter, all fine. I have jumped the seat and brake pedal safety switches. I thought the iginition switch was the problem, replaced that today, still won't start. Now I have the engine cover off, there is continuity all the way from the ignition to the wire at the magneto. No voltage on this wire when the key is on. Ran the coninuity meter from the magneto lead to the spark plug wire, none. Do these magneto coils ever fail? What else could lead to no spark? Thanks for your input.