twenty-two components are shown in this C50bnd 1995 (s) Japan C50-060 E-7 exploded diagram.
A sample from the products for the E-7 include: Screw Flat 6x16, Oil Seal, Bolt,flange,6x22, Stator Comp.(mits.
With two applications this O-ring,6x1.7 is the most specified part.