YS Engine YSF5132 Rocker Arm Shaft Screw for FZ53 FZ63  [YSF5132]

Rocker arm shaft screw for FZ53/FZ63

This is an RC-scale replacement rocker arm shaft screw designed for use with YS Engine FZ53 and FZ63 engine assemblies. The part serves as the fastener that secures the rocker arm shaft and helps maintain correct valve geometry during tuning and routine servicing.

Keep the area clean and inspect the rocker arm and shaft for wear before fitting. Use appropriate thread engagement and torque consistent with small model engine fasteners to avoid stripping or loosening under vibration. This item is intended solely for model engine maintenance and tuning.

The screw complements routine valve adjustment and component replacement when refurbishing an RC engine rocker assembly, and it should be checked whenever the rocker arm or shaft is serviced.