Checked the air filter, fuel filter, blew out the fuel line from tank to filter, everything seems fine. Put petcock on air to bleed and she cranked normally but to no avail. Fuel is getting to the filter bowl. What happened was I shut the tractor off to unhook hoses and got back on and it just cranked over, I never did get the chance to back it away from the bucket. It seems to me like I hit a kill switch, if you know what I mean. So I don't have to look in the manual, which relays need to be switched around? I have three by fuel tank and two down in front of the tractor.