O.S. Engine OS29088320 Mixture Control Valve Assembly for 61F and 61G Carburettors  [OS29088320]

Mixture Control Valve Rebuild Component

This mixture control valve assembly is a carburettor component designed for use with 61F and 61G carburettors. It functions as the factory-style mixture control interface that influences the air-fuel ratio supplied to the engine and is offered as a replacement or service part for model-level tuning and repair.

Installation is straightforward for those familiar with carburettor service: remove the carburettor top or cover per your engine's service procedure, fit the valve assembly into the original location, and ensure linkage and securing hardware are seated correctly. Because the part is specific to the 61F and 61G layouts, verify fitment before fitting.

When tuning, make small incremental adjustments to the mixture control and test under controlled conditions. Allow the engine to reach normal operating temperature before making final mixture changes, and reapply any sealants or thread locking methods recommended by the engine maintenance guide.

For maintenance, inspect the valve assembly for dirt or residue during carburettor service, clean with suitable non-reactive solvents, and replace any worn seals. Treat this item as a model-scale accessory only.