I think the timing on the engine is fixed as I cannot see any slots on the sensor which allows me to move it, I intend to purchase a couple of NGK CM-6 spark plugs today as some threads say to throw the one which comes with the engine in the bin, , it seems as though the fuel is getting through to kick the engine but not enough to carry it over into idle, I'm a bit reluctant to start stripping the carb on a new engine just yet until I have exhausted all other options. I will try these first and come back