O.S. Engine OS44982200 Carburettor Rotor - 61P FSa-110-P Replacement Rotor  [OS44982200]

Service Rotor for O.S. Carburettor Assemblies

The O.S. Engine OS44982200 rotor is supplied as a service replacement for compatible O.S. carburettor assemblies. It is intended to replace worn rotor components that can cause inconsistent fuel delivery or poor throttle response. The part carries the factory model OS44982200 and the internal reference 61P FSa-110-P.

Routine fitting is manageable for hobbyists familiar with nitro engine servicing: remove the carburettor from the model, follow the maker's disassembly procedure, swap the rotor while observing orientation and indexing, then reassemble and bench-check for smooth action. After refitting, perform a short running check to confirm idle and throttle stability.

As a maintenance item, the rotor supports repeatable fuel metering rather than acting as an adjustment for tuning. Once changed, inspect and, if necessary, retune the needle valves and idle settings, then carry out stepwise load testing to ensure the engine responds predictably. This part is for hobby RC use only.

Replace the rotor during O.S. carburettor servicing to recover consistent throttle behavior and confirm fit and operation during post-install tests.