GT22 Engine Crankshaft OS28202000 for O.S. Engine  [OS28202000]

Service and Fitment Notes

Offered as a replacement for GT22 O.S. Engine glow units, this crankshaft is made for RC-scale servicing tasks. The text that follows highlights fitment checks, practical installation steps, and the role a correctly fitted crankshaft plays in engine balance and tuning stability.

Compatibility: denoted for GT22 engines; confirm your exact engine code prior to purchase and maintain original bearing spacing and end-play tolerances during reassembly. Clean all mating surfaces and remove any old sealant or debris before fitting.

Installation notes: remove the engine from the model if necessary to access the crankcase and assemble the crankshaft per the official service procedure, ensuring bearings seat correctly and oil passages align. If possible, perform a static balance test. Final running checks should confirm idle stability and smooth throttle response through the low and mid ranges.

Tuning role: crankshaft mass and balance affect rotating dynamics; installing the correct crankshaft reduces unwanted vibration, helps keep timing steady, and supports predictable needle and pipe tuning. When troubleshooting inconsistent running, inspect crankshaft fit and bearing condition early on.

This crankshaft is intended as a direct service replacement for GT22 engines, helping to restore smooth operation and reliable tuning when installed with correct tolerances.