First priority when developing these engines was to make them lightweight and compact without compromising reliability or the quality performance associated with the Tohatsu brand name. We have maintained the durable standard features that Tohatsu owners appreciate while making fuel-efficient 4-strokes that are easy to transport. These outboards are compact 2-cylinder, SOHC engines that have been manufactured to comply with all US EPA 2006 & CARB 2008 (3 star rating) emission regulations.