61VR/65VR Disc Valve Pin Replacement - OS27216100 by O.S. Engine  [OS27216100]

Replacement disc valve pin for 61VR and 65VR

This O.S. Engine disc valve pin is an RC carburettor component designed as a direct replacement for engines stamped 61VR and 65VR. It acts as the central locating pin in the disc valve assembly and should be fitted when the original shows wear or allows unwanted lateral movement.

Compatibility is restricted to the engine models named in the product title, so verify the engine stamping before fitting. During installation, ensure the disc valve plate sits flush and that the pin aligns concentrically to prevent binding. Clean the bore and mating surfaces of any debris before fitting.

When tuning, a correctly seated disc valve pin contributes to predictable throttle response and smoother transitions through the RPM range by allowing the disc valve to open and close without side play. Replace this pin during routine maintenance or when diagnosing irregular idle or hesitation linked to the disc valve area.