Hi.
The neighbour has just had me take a look at his Scorpion Sine Wave Genset that has been sitting for a bit over a year. It starts first pull and then just hunts on the governor for a little while and stops. If you put it on half choke you can get it to stay running and if you override the governor it will rev quite freely. So, I have taken the fuel bowl off, checked for crud, pretty well spotless, blew through the lines and checked the float operation and fuel flow rate, all good. Took the fuel tap out of the tank and cleared some crud from its filter, reassembled everything, exactly the same. The engine is a Mitsubishi OHV 4 stroke. Any ideas?