John Deere Power Systems has added a new engine rating to its current line of marine engine products - the PowerTech6068SFM. The engine has an M5 rating with 300 hp (224 kW) at 2,600 rpm and is specially suited for rescue boats, pilot boats and other light-duty applications. This new heat exchanger cooled engine will incorporate a seawater aftercooler, electronically controlled fuel system, cruise-by-wire control, diagnostic messaging and self-protection.
The high-torque 6068SFM achieves constant power at a rated speed from 2,600 rpm down to 2,300 rpm; the lower rpm reduces vibration and noise, provides exceptional control and maneuverability and enables the engine to turn larger propellers more efficiently. Equipped with rugged components, the 6068SFM boasts a heavy-duty crankshaft, larger bearings and stronger connecting rods than competitive marine engines in this class. The engine's heat exchanger, expansion tank and exhaust manifold are integrated into one component, eliminating hoses and fittings that can leak or break.
Featuring a full-authority electronic engine control unit and electronically controlled fuel injection pump, the PowerTech 6.8L provides exceptional fuel economy and throttle response, and protection by self-diagnosis. It offers upgraded application flexibility including either-side service for twin propulsion applications, poly-vee belt drives for increased capacity with reduced maintenance and a belt-guard to accommodate front-driven PTO-adapted units.