Parts such as the Crankcase: Gasket Crank Case (nas), Clamper,tube, Drain Cock, Bolt,flange,6x50 are included in the C90 Cub 1996 (t) England Crankcase parts fiche.
In this schematic the "Bolt,flange Sh 6x65" is used most often.
The sub assemblies and components that make up this Crankcase include this Crank Case Comp,r, the most expensive part.