YS Engine YSF9165 carburetor screws for RC nitro carburetors  [YSF9165]

Carburetor screws for YS carburetors

This small hardware set contains replacement carburetor screws designed for use with YS Engine carburetor assemblies on RC nitro engines. They function as the fastening points that secure carburetor components during tuning and regular maintenance, and are intended specifically for RC-scale use.

Installation notes: use the factory screw locations, thread the screws carefully to avoid cross-threading, and tighten only until seated to prevent damage to carburetor housings. If reusing screws, inspect threads for wear and replace any showing deformation. For tuning work, keep screw access clear so adjustments to needle assemblies remain reliable.

Role in tuning: these screws are basic but essential parts that keep carburetor components aligned and sealed while you adjust mixture and idle settings. Treat them as consumable spares to replace during routine service intervals or after any strip or rebuild of the carburetor.