
This part being universal, it may require adaptations
KEIHIN Main Jet 178 — Manufacturer reference: 99101-357-1780
Original replacement part by KEIHIN, this main jet 178 is a spare component designed for carburetors. It is designed to manage fuel flow at wide open throttle, directly influencing the air-fuel mixture and engine behavior during acceleration and deceleration phases.
This jet is used during a carburation re-boring or to replace a worn or clogged jet. It allows for fine adjustment of the mixture richness in combination with the idle screw and other jets in the kit. Before installation, check compatibility with your carburetor model and follow the manufacturer's recommendations for installation and adjustment.
Replace this jet with an identical component to regain flow values in accordance with the original and ensure consistent engine behavior after intervention.