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

56SR Throttle Barrel Overview

This RC-scale throttle barrel is offered as a direct replacement that matches the 56SR designation shown in the product name. It is a wearable element in the throttle linkage and is provided as a single replacement part for hobby-grade RC engines.

Purpose and role: the barrel sits inside the carburetor or throttle housing and guides the throttle lever, restoring smoother actuation and more consistent idle and throttle response when a worn bore has been renewed on the affected 56SR-class RC engine.

Installation notes: removal and installation are generally straightforward for experienced model technicians, involving access to the throttle housing, careful alignment of the barrel in the bore, and confirming unrestricted stroke and correct centring of the linkage. After installation, validate full travel and fine-tune the linkage before running the engine.

Tuning considerations: replacing the throttle barrel is primarily a maintenance action rather than a tuning change, but improved mechanical consistency can refine throttle feel; check idle, mid-throttle and full-throttle response on the bench and in practical use to ensure predictable operation.