CARBURETOR NEEDLE JET
Carburetor Needle Jet is a key regulating component in the carburetor’s main fuel supply system.
Its main function is to accurately control the amount of fuel sprayed from the main jet at different engine speeds (especially medium and high speeds), so as to match the air flow and form a combustible mixture with an appropriate concentration.
It operates in linkage with the “main jet” and “throttle valve”, and is one of the core components that determines the engine’s medium and high-speed dynamic performance and fuel economy.