Final answer:
Chain saws typically use a diaphragm carburetor.
Step-by-step explanation:
Chain saws typically use a type of carburetor known as a diaphragm carburetor. This type of carburetor uses a flexible diaphragm to regulate the flow of fuel and air into the engine. It is commonly found in small engines like those used in chain saws, lawn mowers, and other outdoor power equipment.