Yamaha used to build the Mariner series for Mercury years ago, and Mercury supplied the lower units for Honda a couple of years. Not to bust your bubble but Suzuki supplied the 4 strokes for Johnson/Evinrude.....thank for infomation i used like both omc and mercury until i found out tohatsu build for mercury then i buy only evinrude!
The raw casting come from Spruce pine, North Carolina to Sturtevant wisconsin, the. The blocks are all machined assemble, and tested under the same roof in the Sturtevant facility. Source I work there as a machinist.