Can PD24 carburetor be replaced by PE28 carburetor?

There is no essential difference between the two carburetors. The throttle of the bucket carburetor you mentioned is lifted directly through the throttle pipe, and the throttle of the rotary valve carburetor is lifted by air pressure. There is no obvious difference in actual use.

Every coin has its two sides. Bucket carburetor has fast throttle response, large caliber and high power. However, it consumes more fuel. In addition, if the mixture is suddenly diluted and flameout, it is more difficult to master the vacuum carburetor. Carburetor is a mechanical device that mixes a certain proportion of gasoline with air under the vacuum generated by engine work. As a precise mechanical device, carburetor uses the kinetic energy of inhaled airflow to atomize gasoline. It plays an important role in the engine and can be called the heart of the engine. Its complete device should include starting device, idling device, medium load device, full load device and accelerating device. The carburetor will automatically match the corresponding concentration and output the corresponding amount of mixed gas according to the requirements of different working conditions of the engine. In order to mix the mixture evenly, the carburetor also has the function of atomizing fuel for the normal operation of the machine.