Hi Tank and welcome to the forum.
If you could post the type and code numbers as well i'm sure Grumpy will jump in tomorrow morning with the illustrated parts list and owners manual. From there we can determine the type of carby it has and possible fixes to your problem. A photo of the carby and associated linkages will go a long way in helping identify the issues you have.
Also while you're at it do you have the same symptoms with the air filter removed? Sometimes a blocked/dirty air filter will contribute to the symptoms you have described.
