The carburetor is a mechanical device that mixes a certain proportion of gasoline and air under the action of the vacuum generated by the engine operation.
Gasoline saws generally use crankcase preloaded scavenging two-stroke machines, which are all cylinder air-cooled. According to the function, the gasoline engine is composed of four systems: mechanical, electrical, fuel supply, and airflow.
That is a great question! Both carbureted and fuel-injected engines have their own advantages and disadvantages. Carbureted engines are generally less expensive and simpler to maintain.