twenty-five components are listed in the schematic for this Gs400e 1978 (c) (e01 E02 E04 E17 E18 E21 E22 E24 E25 E30 E34 E39 Special Market (e22) (gs400n:f.no.7103~) (gs400en:f.no.50451 . In this schematic the "Spacer,oil Seal" is used most often.