[Andy Trady]

Hi,I have changed the carb for a new one,new spark plug changed filter in petrol tank.It starts very easily and will tick over till I stop it when I rev it up it runs for 30 seconds and cuts out.Any advice what to try now would be very welcome.Andy

 

[bertsmobile]

try it without the muffler
It will be very LOUD

 

[MrSteele]

Adjust the valves

 

[Andy Trady]

Hi, tried removing the muffler but just the same.