The carburetors used on engines equipped with emission controls have specific flow characteristics that differ from the carburetors used on vehicles not equipped with emission control devices. The carburetors are identified by number. The correct carburetor should be used when replacement is necessary.
A carburetor dashpot is used on the 4-134 to control throttle closing speed.
Refer to Fuel System of this guide for the dashpot, and other carburetor adjustment procedures.