YS Engine YSF9165 Replacement Carburetor Screws for RC Nitro Carbs  [YSF9165]

YS carburetor screw replacement kit

This compact hardware pack supplies replacement screws made for installation in YS Engine carburetor assemblies on RC nitro engines. They secure carburetor components during maintenance and are intended for model-scale servicing.

Inspection advice: locate screws in the original factory positions, begin threading by hand to prevent damage, and only tighten to seating torque. Before reuse, inspect thread forms and screw heads for signs of wear or deformation and discard any compromised pieces. Keep access to screws clear so needle and idle adjustments remain repeatable.

Maintenance role: while simple, these screws keep carburetor parts aligned and sealed during mixture and idle tuning. Consider them consumable spares to replace as part of routine rebuilds or after any disassembly.