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Suzuki DF300 gets lean burn

Suzuki’s original DF300 broke new ground as it was the very first 300 horsepower four-stroke outboard. It set a new benchmark for performance and power from a compact and lightweight outboard.

Now Suzuki says it’s taken the DF300 to the next level with the addition of Suzuki’s Lean Burn Control technology as well as a new Oxygen (O2) Feedback Control System. This state of the art technology is designed to provide a dramatic improvement in fuel economy as well as environmental friendly operation, further enhancing the overall performance and value of the DF300, Suzuki’s flagship outboard motor.

Initial tests show the new DF300 to be 15 per cent more economical than the current DF300 without sacrificing on power.

Suzuki’s innovative Lean Burn Control System was first introduced on the DF70/80/90 to much acclaim from boaters and the media alike. It predicts fuel needs according to operating conditions allowing the engine to run on a more efficient mixture through the use of a lean air-fuel ratio. This system delivers its benefits over a wide operating range, providing significant improvements in fuel economy from low-speed operation into the cruising range.

By combining this unique Lean Burn Control System with the Suzuki Precision Control, Suzuki’s electronic throttle system, which is already a key feature of the standard DF300, enables infinite electronic control of the fuel flow and air flow, increasing the limit of the controllable revolution range. Suzuki says this improves fuel economy across a wider range of engine speeds.

The brand new O2 Feedback Control System, which is the first to be employed in a Suzuki outboard, enables the emissions to be more stable and cleaner than prior systems. By monitoring the levels of oxygen in the exhaust emissions the O2 Feedback Control System provides continuous real-time adjustment to the air fuel ratio, ensuring the optimum amount of fuel whatever the RPM.

The new generation DF300 will also incorporate a new fuel filter that detects if there is any water in the fuel and warns the operator. Water in the fuel can occur for a number of reasons. If it enters the engine, water can cause poor combustion, lower power output and corrosion. If water is detected the engine’s digital gauges will display a “WATER IN FUEL” message and a buzzer sounds when the engine is in neutral.

More information on Suzuki outboards available at: 

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