I know this may sound silly but you don't have to much oil mixed with fuel? I purchase a mower last year that somebody had just filled it up with oil. They thought that the name self mix was all the mower needed. So eventually the fuel tank just filled with oil,no petrol at all. If only you were closer as it doesn't sound like their is much wrong with it. I don't think your timing is wrong as you said it ran.
It ran last week but since opening up the carby I've had problems, also yanked on the cord pretty hard so maybe the timing has become maladjusted. I have a special mixing container, definitely 25 to 1 so proportion is right. I know it's close and that's what's frustrating about this but appreciate your solution, guess it's a process of elimination now.
