Throttle Spindle Shaft Return Spring for WEBER 40 IDA
$ 5.3
Part number: ST3289
Made in: EU
Throttle Spindle Shaft Return Spring for Weber 40 IDA
This throttle return spring is used on Weber 40 IDA carburetors to return the throttle spindle toward the closed position when the accelerator linkage is released. It works with the throttle linkage and spindle mechanism, helping maintain consistent throttle closure during idle and deceleration.
MPN 47605 identifies this spring for the Weber 40 IDA application. A weak, stretched, damaged, or missing return spring can contribute to slow throttle closure, inconsistent idle behavior, or incomplete return of the linkage. This is a mechanical return component; it does not control the main circuit, progression circuit, enrichment system, emulsion, or fuel level.
This replacement part is suitable for carburetor service and restoration work where the original component is worn, damaged, or missing.
Reference/MPN: 47605.
Technical role: Returns the Weber 40 IDA throttle spindle toward the closed position when accelerator linkage force is released.
Service relevance: A stretched, damaged, or missing spring can contribute to slow throttle closure, inconsistent idle behavior, or incomplete linkage return.
What Is Included
- One throttle spindle shaft return spring for Weber 40 IDA
- Made in EU.
Important Fitment Note
Verify the Weber 40 IDA carburetor family and MPN 47605 before ordering. Compare the replacement spring with the removed part for coil geometry, overall hook arrangement, extension direction, mounting points, and available clearance around the throttle linkage. As this is a hooked mechanical spring rather than a threaded or fuel-metering component, confirm that both hook ends engage the correct linkage and carburetor attachment interfaces without binding.
Compare the spring length, tension, hook orientation, and attachment position with the original before installation.
What you see is what you get
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