Have got it all together for the second time now have pulled it down and looked at timing marks and it can only really go one way when the marks are lined up( rotated crank around a million times to see) the carby is a large one piece flojet. pulled it down cleaned checked and reset baseline settings. Back to firing it up and all it will do is wind over and give an occasional cough no fire. Have checked spark got plenty have gone over everything i think it is the carby. It is really starting to annoy me. The last thing on the list to do! That is the reason i pulled the motor apart to check the timing. I just dont get it.