My latest project is a Flymo rear catcher mower with a Tecumseh 3.5hp 2 stroke engine. The previous owner tried to remove the fuel bowl nut the normal way, not realising it was a left hand thread (the label on the bowl was facing the engine so he didn't see it). I probably won't have too much trouble getting the broken piece out BUT do you think I will have difficulty finding another carby bowl nut to replace it seeing as it's a left hand thread, rest of mower is in really good condition. Any help appreciated. Cheers all.