Used my generator one time since I bought my 3850 in March and it quit after 20 minutes. Fuel pumping okay, oil okay. I am getting a code 1-12 on this which when looked up instructs me to go to the Onan dealer. Trying to save time with any known fixes or issues that you all may have. By the way, it fires up and shuts down within two seconds. If I manually hold the choke open along with the throttle, it will run for 15 seconds or so.