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

O.S. ENGINES ROCKER SUPPORT FS-40S,FS-48S,FS-52S
Price:
AUD$8.59
Brand:
O.S. Engine
Model:
OS45261410
GTIN:
4531028121614
Condition:
Brand New
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Durability and Fitment Notes

This rocker support is a service replacement for O.S. Engine FS-series carbureted motors and is compatible with FS-40S, FS-48S and FS-52S models. It acts as the bearing surface and mount for the rocker assembly and helps preserve correct valve geometry when the engine is under load.

Fitting is straightforward: remove the head and rocker parts, inspect the rocker shaft and bearings for wear, install the support in the same orientation and reassemble using the original hardware. After assembly verify valve clearances and seating before running at full power.

Replacing a degraded support can prevent increased valve lash and erratic valve motion, which extends the useful life of the rocker train and smooths engine behaviour between sessions.

How can I tell if the rocker support is worn?

Check for lateral play in the rocker shaft, visible scoring or uneven wear inside the support bore, and inconsistent valve lash during routine inspections.

Is this suitable for heavily modified engines?

The support is compatible with FS-40S, FS-48S and FS-52S engines. After major modifications verify geometry and clearances, as altered components can require additional shimming or adjustments.

Should bearings be serviced when replacing the support?

Inspect, clean or replace bearings and the rocker shaft as needed when fitting the new support. Fresh bearings and a properly seated shaft will improve longevity and performance.

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