YS FZ70S Throttle Barrel Sleeve, Precision Brass - YSG1052 by YS Engine  [YSG1052]

Replacement throttle barrel for YS FZ70S

This RC throttle barrel is made as a direct replacement for worn or damaged sleeves in YS FZ70S carburetors. The new brass bore restores a smooth slide surface to the carburetor throat, helping to recover reliable idle and cleaner throttle transitions on glow-model engines.

Fit and role: the sleeve forms the sliding bore for the carburetor slide, so any scoring or wear will upset idle stability and throttle feel; swapping a worn barrel is a standard maintenance step to regain low-speed control and consistent mid-range response.

Installation notes: supplied as the barrel sleeve only, it is fitted into the carburetor throat to replace the original sleeve. Intended for users familiar with small engine service and carburetor reassembly, sold as an RC model spare part.