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

Carburettor rotor role and fit

The O.S. Engine OS44981200 carburettor rotor is a dedicated RC-scale replacement part intended for use inside model engine carburettors. It serves as the rotating element that modulates airflow and throttle response within the carburettor assembly, and is supplied as a single component for repair or tuning purposes.

When planning installation, confirm that the rotor matches the internal geometry of your carburettor body and the shaft dimensions of the existing assembly. This part is presented as a direct replacement piece rather than a complete carburettor, so basic disassembly of the carburettor is required for swap‑out. Use proper small-tool handling and keep track of shims or retaining parts during removal.

In tuning contexts the rotor affects airflow characteristics and therefore idle and mid-range throttle behaviour. Small changes in rotor seating or reassembly orientation can influence mixture and response, so verify settings on a test run after installation and adjust high/low needle settings as needed for the engine and ambient conditions.

This rotor is intended for hobbyists and technicians who perform carburettor maintenance or targeted tuning on model engines, offering a component-level option for repair and setup work.