61R Fsa-81-P Carburettor Rotor OS44882200 Replacement O.S. Engine  [OS44882200]

Overview and fitting considerations

This O.S. Engine carburettor rotor is supplied as a replacement part for O.S. carburettor assemblies and influences the throttle aperture and idle behaviour in nitro-style RC engines. The rotor code specifies the exact variant used for renewal or repair tasks.

Replacement is conducted by hobby technicians comfortable with carburettor service: remove the carburettor, disassemble the rotor housing in the correct order, check the throttle shaft and bearings for wear, then install the new rotor ensuring correct orientation and free movement before reassembly. Verify linkage geometry and idle on the bench prior to reinstalling the carburettor into the model.

When tuning, a correctly installed rotor can help recover steady idle and more consistent throttle progression. Make measured adjustments to idle and linkage settings and confirm results with controlled test runs.