YS Engine YSG1052 throttle barrel FZ70S replacement for YS carburetor  [YSG1052]

Throttle barrel for YS FZ70S

This is an RC-scale throttle barrel designed as a direct replacement for worn or damaged barrels in YS FZ70S carburetors. The part restores a smooth bore for the carburetor slide, helping to recover consistent idle and more predictable throttle response in glow-model engines.

Fit and role: the barrel serves as the sliding bore inside the carburetor, so its condition affects throttle feel and low-speed stability; replacing a scored or worn barrel is a common maintenance step when tuning idle and mid-range response on small glow engines.

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