Parts such as the Lower Casing - Drive 2: Tube Water 1, Cover, Water Inlet, Nut Castle (683), Propeller Assy (5") are included in the 8mhx 1999 Lower Casing - Drive 2 parts fiche.
The Lower Casing - Drive 2 assembly is constructed from several parts from which the Propeller Assy (7") is the most expensive.
With four applications this Bolt (6g1) is the most specified part.