Valve Spring Seat OS45060309 for O.S. Engine FS-26S, FS-40S and FS-48S  [OS45060309]

O.S. ENGINES VALVE SPRING SEAT FS-26S,40S,48S
Price:
NZD$6.34
Brand:
O.S. Engine
Model:
OS45060309
GTIN:
4531028120860
Condition:
Brand New
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Hardened steel seating for FS series engines

This valve spring seat is supplied as an RC replacement for the O.S. Engine FS-26S, FS-40S and FS-48S engines listed in the model title. It delivers a firm, wear-resistant seating area for valve springs so valve movement remains consistent under normal hobby running and tuning conditions.

When servicing, clean the mating surfaces and check the guide bore for burrs before installing. Apply light, uniform pressure to seat the part and confirm the spring sits squarely on the new surface. Regular inspection will reveal early wear and prevent irregular valve action.

Remember that this component is intended for model engines; do not use workshop techniques suited to full-size engines, and stick to hobby-level presses and drivers to avoid damaging the seat.

How long should the steel seat last under typical hobby use?

Longevity depends on usage and maintenance. With proper installation and regular inspection for burrs or scoring, the seat can remain serviceable for many service cycles. Replace if any surface damage appears.

What signs indicate the seat is worn?

Look for uneven contact marks, grooves, or deformation around the seating face. Any visible distortion or sharp edges means the part should be replaced to avoid inconsistent valve seating.

Can material choice affect valve spring life?

Yes. A properly finished steel seat reduces localized wear on the spring retainer and helps maintain consistent spring tension, which in turn supports predictable valve performance.

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