
This part being universal, it may require adaptations
Dell'Orto VHST 38 Idle Jet (manufacturer reference: 16690_38) — original replacement part for Dell'Orto VHST series 38 carburetors. Designed to operate on the idle circuit, this jet allows for precise dosing of fuel when the throttle is nearly closed, ensuring stable idling and smooth starting.
Ideal for motorcyclists who pay attention to carburation, this jet allows you to fine-tune the richness of the mixture at idle and low revs. During a restoration or fine-tuning of the carbs (cleaning, synchronization, adjusting the mixture screw), replacing the idle jet with an appropriate reference is part of standard workshop practices.
Practical tips: before replacement, ensure compatibility with your VHST 38 carburetor model and work on a cold engine. Take the opportunity to clean the circuits and check the condition of other jets and seals. If you are unsure about the choice of size or adjustment, refer to the manufacturer's documentation or consult your tuner.