Hope someone from back in the day can answer this. I have a KC13R that seems to be original. Did the Evinrudes and the Johnsons both share the KC13R model designation? This engine has an Evinrude cowl but a Johnson serial plate. The lower cowl pan for the Evinrude is a different shape from the Johnsons of that era so the cowl and pan match on this engine. Also interesting about this engine is that the serial number is J000002. The second KC13R engine made???

Likewise was the KR15M designation shared by both Evinrude and Johnson? If so is there any documentation which serial numbers were Johnson and which were Evinrudes?