YS Engine YSS1015 Propeller Nut 50ST - Replacement Fastener for RC Engines  [YSS1015]

Overview: propeller nut usage and care

This YS Engine propeller nut functions as a simple replacement part for RC propeller assemblies. It secures the propeller to the engine shaft or spinner and does not change the engine's tuning or drive characteristics.

To fit, remove locking hardware if present, slide the propeller onto the shaft, hand-tighten the nut, then apply the correct wrench to finish. Use controlled force to avoid over-torquing and check that the propeller runs true before any flight attempt.

Inspect the nut periodically for thread wear, deformation, or signs of loosening and re-torque after the first run when newly installed. Designed for straightforward use during field fixes or workshop maintenance.