Solex ADDHE idle mixture screw fine thread
$ 15
Part number: ST3394
Made in: EU
Solex ADDHE Idle Mixture Screw – Fine Thread
This fine-thread mixture screw is used in the idle circuit of Solex ADDHE carburetors. It meters the idle mixture at low throttle openings, influencing idle quality, off-idle progression, and transient response during initial throttle movement. A damaged, missing, or incorrect screw can prevent consistent mixture adjustment and may contribute to unstable idle or poor progression.
Thread specification: M5 x 0.5 fine thread. The screw is identified by MPN solmix1. Fine-thread adjustment provides controlled movement during idle-circuit tuning, but the correct tip, seat, and interface must match the carburetor body.
This replacement part is suitable for carburetor service and restoration work where the original component is worn, damaged, or missing.
Reference/MPN: solmix1.
Technical role: Fine-thread idle mixture screw for Solex ADDHE carburetors, metering the idle circuit at low throttle openings.
Service relevance: A damaged, missing, or incorrect screw can affect idle adjustment, idle stability, off-idle progression, and initial throttle response.
What Is Included
- Solex ADDHE fine-thread idle mixture screw
- Made in EU.
Important Fitment Note
Several different mixture screw types were used with ADDHE carburetors. Verify the Solex ADDHE family, any marking or code on the removed part, and the required M5 x 0.5 thread before ordering. Compare the replacement with the removed screw for overall length, threaded-section position, tip and seat geometry, spring or retaining interface, and the way it engages the carburetor body.
Confirm the thread, needle-tip profile, seat style, and complete interface against your original screw; matching the thread alone does not confirm fitment.
What you see is what you get
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