YS Engine YSS2025 Replacement Throttle Barrel for 56SR  [YSS2025]

Throttle Barrel Fit and Function

This component is an RC throttle barrel supplied as a direct replacement corresponding to the 56SR designation in the product title. It performs as a wear part within the throttle linkage and is provided as a single replacement for hobby RC engines.

Purpose and role: the barrel locates within the carburetor or throttle assembly and guides the throttle lever, so fitting a new barrel reduces play and returns steadier idle and throttle response on 56SR-class engines.

Installation notes: experienced model technicians will remove the throttle housing, align the barrel in the bore, and ensure unrestricted stroke and correct centring of linkage. After installation, confirm full travel and make any necessary linkage adjustments before operating the engine.

Tuning considerations: this is primarily a maintenance replacement; however, restoring consistent mechanical action can affect throttle feel and may require a quick verification of tuning settings during bench and running checks.