Whatever you do, don't remove the carb and soak it in GUNK type parts cleaner. The solution is very strong and will destroy the internal parts of the carburetor. To properly clean it, it must be removed and the internal gaskets and parts removed. You would then want to spray through all of the orifices with a mild solvent like WD-40. Harsh solvents are bad as they can destroy the small, sensitive check valves located inside the carburetor. That would be the proper way. If you choose not to remove the carburetor, you can add a small amount of fuel cleaner to the fuel mix, but be careful here, as the fuel mix provides ALL the lubrication to the engine.
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Whatever you do, don't remove the carb and soak it in GUNK type parts cleaner. The solution is very strong and will destroy the internal parts of the carburetor. To properly clean it, it must be removed and the internal gaskets and parts removed. You would then want to spray through all of the orifices with a mild solvent like WD-40. Harsh solvents are bad as they can destroy the small, sensitive check valves located inside the carburetor. That would be the proper way. If you choose not to remove the carburetor, you can add a small amount of fuel cleaner to the fuel mix, but be careful here, as the fuel mix provides ALL the lubrication to the engine.