Hi Bender, welcome to Outdoorking.
Please have a close look at the pressed steel cooling air cowl (the starter is in the center of it). It should have a long series of stamped numbers on it, divided into 3 groups: Model, Type, and Code. If you tell us those numbers we can identify the engine, including the carburetor type. Then we can talk about how to clean it properly. With luck we might even be able to take a guess as to what caused the problem, so you can keep it from happening again.