O.S. Engine OS23818176 Universal Nipple No.9 for 20A 20B 20E 20K 21B Carburettors  [OS23818176]

Universal No.9 Nipple for O.S. 20A/20B/20E/20K/21B Carburettors

This part is a universal carburettor nipple intended to reinstate a secure fuel connection on the O.S. engine models cited. It is used where the original component has become compromised and is permitting fuel to leak or drip.

Confirm compatibility with the specific carburettor prior to fitting as the item is only suitable for the models shown in the product title. When installed correctly the nipple provides a neat, sealed junction at the fuel entry or hose fitting.

To install, withdraw the aged nipple, align the replacement with the carburettor seating or thread form and tighten evenly until the joint is secure and free of leaks, taking care not to overtighten. Verify there are no fuel leaks at idle and during normal running before extended operation.

Reliable fuel connections are a simple yet important part of routine maintenance, helping maintain consistent engine performance and predictable response while making adjustments or running on the circuit.