O.S. Engine OS26816108 Carburettor Disc Valve Pin - compatible with 60R/61VR/65VR  [OS26816108]

Carburettor disc valve pin for 60R, 61VR and 65VR engines

This disc valve pin serves as a replacement carburettor part to correct disc valve positioning on O.S. Engine 60R, 61VR and 65VR models. It positions the disc valve inside the carburettor assembly so the valve can operate smoothly during throttle changes, helping to maintain steady fuel delivery and predictable throttle response on your model engine.

Use is limited to the specific engine codes shown in the product listing; always check your engine casting or the service manual before purchasing to confirm compatibility with your carburettor. The pin is a service item intended for maintenance and tuning support rather than a direct performance enhancement.

Fitting guidance and notes:

• Access the carburettor by removing the carb top and diaphragm plate as per the engine service procedure, and ensure work surfaces and parts are clean.
• Remove the original pin and carefully transfer any small seals or bushings that are still serviceable, then fit the replacement pin ensuring smooth, non-binding valve movement.
• After reassembly, run bench checks for idle stability and throttle transitions before subjecting the engine to full-power operation to confirm correct valve timing and seating.