O.S. Engine OS29181610 Carburettor Mixture Valve for 60M-C and 91SZ-H  [OS29181610]

Carburettor mixture control unit

This Mixture Control Valve Assembly supplied by O.S. Engine is intended as a direct replacement for the 60M-C and 91SZ-H carburettors fitted to RC glow engines. It provides the adjustment point for fuel/air mixture and idle without altering the main carburettor casting.

Fitment notes: make sure the carburettor you own matches the 60M-C or 91SZ-H form factor before proceeding. Remove the carburettor with basic hobby tools, replace the valve assembly, and check for free and even throttle movement prior to refitting to the engine.

Tuning effect: the valve influences mixture response and idle stability. Adjust in small steps and validate changes on a bench mount before using the machine in normal operation.

Service advice: keep linkage pins and sealing surfaces clean, clear any varnish from passages, and fit new gaskets where needed to preserve consistent mixture control.