Ok we have been working on this 1985 Suzuki 230 which is shaft driven(not sure if that matter to ya) and we have adjusted the timing and changed the spark plug. Now it will roll over, but it wont stay running. It is getting spark and gas to the carburetor can you help as to y its not running please!

 

Check the air filter. Make it all like it came from the factory! You sure the timing is right? How about the valve lash?