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

Replacement rocker arm screw for FZ53/FZ63

Designed as a direct replacement, this rocker arm shaft screw fits YS Engine FZ53 and FZ63 engine assemblies. The component secures the rocker arm shaft and supports accurate valve geometry during tuning and routine upkeep.

Maintain cleanliness around the rocker area and examine both the shaft and arm for wear before fitting. Use correct thread engagement and apply torque suitable for small model engine fasteners to avoid stripping or loosening due to vibration. This item is for model engine maintenance and tuning purposes.

When carrying out valve adjustments or swapping rocker components, include this screw in your inspection routine to ensure reliable operation.