SS .21 Manual Brandname: O'Donnell Category: Engine Total Pages: 16 Table of contents TableofContents2SafetyPrecautions3ImportantInformation4Fuel5AirFilterGlowPlugs6TunedPipe7NeedleSettings8PrimingTheEngine9EngineBreak-In10EngineMaintenance12CarbPartsView13ReplacementParts14ExplodedView15WarrantyRepairService16