I will also mention, five years ago I bought two Champion air compressors, one for me and one for a customer, with the same Kohler engines. ANYTIME, we started these things, took multiple starts to get them running. Turns out it was connected to the oil pressure shutdown, for whatever reason, bad switch, too long to build up pressure, I don't know. The sensor is right next to the oil filter, just unplug a wire. Starts first time, every time now. I would assume, and hope, Kohler has fixed this problem since.