YS Engine YSF5165 RC Carburetor Screw Set FZ53 Replacement Screws  [YSF5165]

Replacement Screw Guide for Model Carburetors

These screws are supplied as replacement fasteners for fastening carburetor components in model engines and carburetor assemblies. They address common loss or degradation of original screws where threaded mounting points hold parts together.

To install, match the screw dimensions to your carburetor, remove the old fasteners, and install the replacements until components are secure without over-torquing. The screws maintain alignment of removable carburetor parts during regular maintenance or setup changes.

During tuning the fasteners help stabilise needle holders, throttle linkages and housings so adjustments remain repeatable. Always inspect thread engagement and alignment after installation and before running the engine.