
This part being universal, it may require adaptations
KEIHIN Idle Jet 42 — Ref. N424-24042
Idle jet size 42 by KEIHIN, designed for carburetors equipped with a jet of this size. An essential tuning part for regulating the fuel flow at idle and low RPMs, it directly impacts the air/fuel mixture richness and facilitates fine adjustments of the carburetor.
Practical use: replace the jet when air/fuel adjustments no longer allow for a steady idle, or during precise tuning after carburetion modifications. Before installation, check compatibility with your carburetor model and ensure that the jet seat is clean and free of deposits.
Field advice: handle the part carefully to avoid deformation, keep it dust-free, and entrust the final adjustment to a technician if you are unsure about the calibration. A suitable jet is a small component that plays a significant role in achieving stable idle and controlled carburetion.