YS Engine YSF1553 Throttle Barrel 140 Replacement  [YSF1553]

Replacement throttle barrel for nitro RC engines

This YS Engine YSF1553 throttle barrel 140 is a scale replacement component made for use in YS Engine throttle assemblies. It forms the bore that guides the throttle slide and keeps the mechanical link between the carburettor barrel and the throttle linkage accurate.

Fitting follows standard carburettor servicing: remove the carburettor, open the throttle housing as needed, slide the worn barrel out and fit the replacement. Make sure the bore and slide are clean and that the new barrel moves freely. Check throttle centring and full travel before returning the model to run.

As part of tuning, the throttle barrel influences throttle feel and idle transition, so include this part in routine carburettor maintenance to preserve predictable throttle response. Inspect for any burrs or contamination and operate the throttle through its full range after installation.