FSa-56 Crankshaft OS44602000 Replacement by O.S. Engine  [OS44602000]

FSa-56 service shaft for RC power units

This O.S. Engine OS44602000 crankshaft FSa-56 is an RC-scale replacement intended for service and rebuild operations on compatible model engines. Supplied as the rotating assembly part only, it is meant to restore function when the original shaft shows wear or damage.

The crankshaft acts as the main rotating component in small nitro or glow engines, translating piston motion into output while interfacing with connecting rods and bearings. During replacement inspect the journals, pin seating, and the rolling bearing condition to promote smooth operation and limit premature failure.

Fitting notes: ensure correct bearing orientation, measure endplay and radial runout with simple gauges, and renew seals and bearings where worn. If weight differences occur after fitting or you machine parts, rebalance the rotating assembly. Apply correct torque to retaining fasteners and avoid overtightening adjacent components.

The O.S. Engine OS44602000 crankshaft is intended to reinstate reliable rotating assembly performance and to assist with routine engine rebuilds and tuning activities.