YS Engine YSS2049 56SR High-Speed Needle Socket for Precise RC Needle Adjustment  [YSS2049]

Socket for stable high-speed needle tuning

This YS Engine YSS2049 high-speed needle socket serves as an accessory to clamp and stabilise the high-speed needle during tuning and engine servicing. Its aim is to create a reliable link between the fuel mixture needle and the carburettor linkage so adjustments remain consistent and the needle tip is not damaged by slippage.

Fitting is simple: insert the needle into the socket with the tip aligned to the carburettor needle seat, then gently tighten while checking for smooth rotation and consistent movement. The socket provides a repeatable contact point for the tuning tool and needle assembly to support accurate high-speed adjustments.

Use on a running engine test stand or during deliberate bench checks to make measured tweaks and observe changes in engine behavior. The design focuses on grip reliability and repeatability to help avoid rounding and slipping during tuning, with all instructions intended for RC model engine use only.