O.S. Engine OS29083600 60L Mixture Control Valve Assembly for O.S. Carburettors - Carburettor Part  [OS29083600]

60L mixture control valve overview for precision tuning

This is an RC-scale mixture control valve assembly intended for use with O.S. carburettor parts and related replacement components. The 60L designation identifies the valve size and its role in adjusting fuel/air mixture for small nitro RC engines.

In everyday use the assembly gives a convenient external adjustment point for needle and idle settings so you do not need to replace the main carburettor body. When fitting, check that the valve lines up with your carburettor linkage and confirm the mechanism moves freely through its range to prevent irregular idling.

For tuning, treat the unit as a fine adjustment device: make small incremental turns, note engine response, and lock in mixture and idle once the engine is at normal operating temperature. If uncertain about fitment, compare mounting points and the valve profile with your existing carburettor parts before installation.