FS-40S / FS-48S / FS-52S Rocker Support OS45261410 - O.S. Engine  [OS45261410]

An RC-scale replacement, this rocker support suits the O.S. Engine FS range and is compatible with FS-40S, FS-48S and FS-52S models. It secures the rocker assembly and helps maintain valve alignment during operation.

To fit the part, remove the cylinder head and rocker assembly, examine the rocker shaft and bearings for signs of wear, install the new support in the correct orientation and reassemble with the original fixings. Reassess clearances and valve timing and perform a cautious low-speed run to confirm correct function.

In regular servicing the support promotes consistent valve movement and simplifies adjustments. Replacing damaged supports reduces variability and helps maintain repeatable engine performance.