This line is Subaru's first to utilize chain-driven overhead cam (OHC) technology, and the first to utilize OHC technology in the industrial air-cooled small engine market.
[1] The significance of Overhead Cam technology is that it's been proven to enhance engine performance.
The technology allows the intake and exhaust valves being positioned for optimum engine performance, which offers lower resistance for the air/fuel mixture flow.
Overhead Cam engines also have fewer moving parts and produce less mechanical noise than competitive technologies.
[3] The engines can be used on construction equipment such as soil compactors, pressure washers, generators, water pumps, air compressors, log splitters, lawn and turf seeders and chippers/shredders.