FS Push Rod Protection FSa-155 - OS42566100 by O.S. Engine  [OS42566100]

FS-series push rod guard summary

The O.S. Engine OS42566100 push rod cover FSa-155 is supplied as an accessory for FS-series RC engines. It protects the area where push rods exit the crankcase and tidies the exterior around the rod passage.

Intended for maintenance on FS engine families, the cover gives a clear reference area for inspections and helps maintain consistent routing of push rods during tuning. This description is focused on the part's role and does not imply a full engine conversion.

Fitting should follow normal glow engine servicing steps: remove the head or cover as required, align the cover over the push rod aperture, and attach it using the engine's original mounting points and fasteners. Do not disturb timing components during installation and confirm free push rod movement before final tightening.

When tuning and running-in the cover helps keep the push rod channel clear of debris and provides a constant visual check point. Check the cover after heat exposure for any signs of damage and replace it if it interferes with push rod operation.