O.S. Engine OS4A407030 GGT10 Carburettor Nipple Replacement  [OS4A407030]

Durable carburettor nipple for O.S. carburettors

The O.S. Engine nipple is supplied as a service item for O.S. carburettor assemblies, created to provide secure fuel line attachment and dependable sealing during maintenance. The notes below focus on longevity, cleaning, and how the nipple interfaces with the carburettor and fuel tubing on nitro models.

Inspect the nipple for corrosion, blockages, or thread wear before reinstalling. Parts are typically replaced during a carb overhaul or if fuel leakage or poor delivery is suspected. Keep the component free of dirt to avoid contaminating the fuel circuit.

Installation is straightforward: ensure both mating surfaces are clean, hand-engage the thread to avoid cross-threading, and tighten to a firm, controlled fit. After fitting, conduct a static flow check and low-power bench run before full operation in the model.

From a maintenance viewpoint, a compromised nipple can alter fuel feed and affect engine response; replace suspect items during routine service. Use O.S. compatible carburettor components to maintain seal integrity and correct thread fit.