have a 2185 with the Kohler 18 horse. It's been starting and running fine. Yesterday it started as usual I mowed about 25 feet and it just quit. It still turns over but doesn't start. I tried putting a bit of fuel in the carb it still doesn't fire. Thats all I've tried so far. I am off tomorrow and was gonna really get to it. If my on line research is correct the Kohler has an ignition module instead of a coil. If I don't get a spark when I ground the plug does that mean ignition module? Could it be a safety killing it?