Replacement Disc Valve Pin OS26816108 for 60R 61VR 65VR by O.S. Engine  [OS26816108]

Replacement pin for disc valve assemblies (60R, 61VR, 65VR)

This disc valve pin is supplied as a carburettor replacement to restore the correct position of the disc valve on O.S. Engine models 60R, 61VR and 65VR. It ensures the disc valve can open and close reliably under throttle changes, which helps preserve consistent fuel flow and throttle behaviour in model engines.

Compatibility is restricted to the engine codes shown in this listing. Verify your engine casting or service documentation before ordering to make sure the pin matches your carburettor configuration. This component is intended for maintenance and long-term reliability rather than to increase peak performance.

Installation tips and best practice:

• Remove the carburettor top and diaphragm plate following the engine service instructions, and work in a clean area to avoid contamination.
• Take out the old pin, transfer any reusable seals or bushings, then insert the new pin and check that the disc valve moves freely without catching.
• Reassemble the carburettor and perform idle and throttle transition checks on a stand before subjecting the engine to high-load runs to confirm correct operation.