YS Engine YSF9165 Carburetor Mounting Screws for RC Nitro Models  [YSF9165]

Fit and compatibility notes for YS carburetors

This hardware pack contains replacement screws intended for YS Engine carburetor assemblies on RC nitro engines. They secure the carburetor components during servicing and are intended for scale model use.

Fit check: confirm screws are installed in the original factory locations, start threads by hand to avoid cross-threading, and tighten until seated only. Compare the thread engagement and head shape to existing fasteners before committing to final torque.

Service role: these screws are small consumable parts that help maintain sealing and alignment when adjusting mixture and idle. Replace them during rebuilds or whenever thread damage is observed.