Parts such as the : O-ring,6x1.7, O Ring, 8 Dia, Gskt,pump Body (nas), Gasket Clutch Out (nas) are included in the C50lm Little Cub 1999 (x) Japan parts fiche.
The fourteen C50lm Little Cub 1999 (x) Japan component parts are all listed in this schematic.
With two applications this O-ring,6x1.7 is the most specified part.