Precision Carburettor Rotor OS29088200 for O.S. Engine  [OS29088200]

Rotor function within the carburettor

This carburettor rotor is intended for use inside O.S. Engine carburettor parts and is presented as a direct replacement or spare. The description focuses on its role during maintenance and tuning of nitro model engines.

As a mechanical element, the rotor affects throttle response and idle stability by how it fits and turns inside the carburettor bore. When fitting a replacement, confirm the rotor is correctly seated and that it rotates smoothly to preserve consistent fuel delivery characteristics.

Installation guidance: remove the carburettor from the model following the manufacturer's service instructions, inspect surrounding seals and the needle seat, fit the rotor ensuring correct alignment, and conduct bench checks for free movement and correct needle engagement. Reinstall and conduct a controlled run-in followed by basic needle adjustments to reestablish expected idle and mid-range behaviour.