YS Engine YSF1553 Throttle Barrel 140 replacement throttle barrel  [YSF1553]

Throttle barrel for RC nitro engines

This YS Engine YSF1553 throttle barrel 140 is an RC-scale replacement part intended for use in YS Engine throttle assemblies. It serves as the bore component that guides the throttle slide, retaining a direct mechanical interface between the carburettor barrel and the throttle linkage.

Installation follows common carburettor service steps: remove the carburettor from the model, disassemble the throttle housing as required, slide the old barrel out and install the replacement barrel ensuring the bore is clean and the barrel moves smoothly. Verify throttle centring and full travel before returning the model to service.

In tuning and setup the throttle barrel affects throttle feel and idle transition; use it as part of routine carburettor maintenance and tuning to maintain consistent throttle response. Inspect for burrs or contamination and operate the throttle through its full range after fitting.