O.S. Engine OS44981200 Precision Carburettor Rotor 60Y FSa-110  [OS44981200]

Rotor purpose and installation guidance

The O.S. Engine OS44981200 rotor is a specialist replacement element designed to fit inside model engine carburettors and regulate airflow as the throttle turns. It is supplied as a single spare part for repair and tuning operations.

When preparing to install, verify that the rotor geometry matches the internal contour of your carburettor and that the shaft interface aligns with the current assembly. Installation requires partial dismantling of the carburettor; handle small screws and retaining clips carefully and keep components in order for reassembly.

From a tuning standpoint the rotor influences how air is delivered across the throttle range, and small differences in seating or alignment can affect mixture and throttle response. After fitting, perform a careful test run and make incremental high and low needle adjustments to suit the engine and ambient conditions.

This rotor is intended for mechanics and skilled hobbyists who service or tune model engines, supplying a component level option for targeted repair and setup.