Precision Throttle Sleeve for YS FZ70S - YSG1052 YS Engine  [YSG1052]

YS FZ70S throttle sleeve replacement

This aftermarket throttle barrel sleeve is manufactured to replace worn bores in YS FZ70S carburettors. By renewing the sliding surface inside the throat, the part helps bring back steady idle and predictable throttle response on glow engines.

Fit and role: the sleeve creates the sliding bore for the carburettor slide; deterioration of this surface is a common cause of poor low-speed stability. Replacing the barrel is an effective maintenance task when improving idle and mid-range behavior.

Installation notes: supplied as the barrel component only for installation into the carburettor throat. Recommended for hobbyists who understand small engine servicing and carburettor rebuild procedures; sold as an RC spare part.