Linkage return spring Weber DCOE
$ 9.7
Part number: 99901.155
Made in: EU
Manufacturer: FAJS
Linkage Return Spring Weber DCOE
This linkage return spring is used with Weber 40 DCOE carburetors to provide closing tension for the throttle linkage. It helps return the linkage toward the idle position after accelerator input, supporting consistent throttle closure and predictable idle-to-progression operation. A stretched, weak, missing, or incorrectly positioned spring can contribute to slow linkage return, inconsistent idle behavior, or excessive free movement in the throttle mechanism. MPN 99901.155 identifies this return spring.
Inspect the attachment points, linkage travel, and spring clearance during installation. The spring should extend and retract without binding, rubbing, or interfering with throttle-shaft movement. This is a mechanical linkage component, not a fuel-metering part such as a main jet, emulsion tube, or idle circuit component.
This replacement part is suitable for carburetor service and restoration work where the original component is worn, damaged, or missing.
Reference/MPN: 99901.155.
Technical role: Provides return tension for the throttle linkage on Weber 40 DCOE carburetors, helping it move back toward the idle position.
Service relevance: A suitable replacement for a stretched, weak, missing, or incorrectly positioned spring causing slow or inconsistent linkage return.
What Is Included
- Linkage return spring for Weber 40 DCOE carburetors, MPN 99901.155
- Made in EU.
Important Fitment Note
Verify the carburetor family as Weber 40 DCOE and compare the MPN or applicable marking with the removed spring. Check the spring’s hook and loop geometry, attachment locations, body length, extension range, and installed clearance against the existing linkage. Confirm that the spring does not bind, rub, or alter full-throttle and idle-stop movement when the linkage is operated by hand. Compare the replacement directly with the removed spring before installation, especially where linkage brackets or conversion hardware have been changed.
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