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Suzuki’s Fuel-efficient, High-performance, New-generation DF40A/DF50A Suzuki’s new-generation DF40A and DF50A boast a host of technical features that combine to give them increased fuel efficiency and performance, while weighing less and fitting more compactly on the transom — all of which are qualities that today’s boaters are demanding.

Starting is a breeze with Suzuki’s Easy Start System. Turn the key once and the engine automatically turns over, coming to life at your command.

Once under way, Suzuki’s advanced Lean Burn Control technology takes full advantage of sensors monitoring engine performance and ambient environmental conditions. Using this input, the Lean Burn Control accurately predicts engine needs to provide the fuel injection system with just the right mixture of air and fuel, delivering optimal fuel efficiency.

Initial tests have shown that these two new-generation outboards use 23% less fuel than the current 40 and 50 models, mainly in the cruising range, which is where the engine is used for the majority of the time.

Both of these new outboards are based on the Suzuki’s proven in-line three-cylinder dual overhead cam (DOHC) 12-valve engine with a highly efficient air intake system, which comes into effect in the high RPM range.

With 941 cm3 of displacement, multi-point sequential electronic fuel injection, these engines respond quickly and confidently to every move of the throttle, particularly when accelerating from cruising speeds. All of this technology combines to provide quiet and efficient operation as well as exhilarating performance. For example, the Suzuki engineers are pleased to report that the new DF50 is 6% faster at top speed and 26% quicker in acceleration than the current Suzuki model.

When designing these new engines, Suzuki’s engineers also paid close attention to durability. Internal oil flow is more efficient, keeping moving parts better lubricated while using less energy. These new engines also feature Suzuki’s maintenance-free oil-bathed timing chain, which will give boaters years of dependable service. This is the first time this feature has ever been offered in the 40 and 50 horsepower class.

The compact size and light weight of the new DF40 and DF50 make them an ideal power match for a wide variety of boats, and are ideal for entry-level boating.

According to Greg Haines, of Haines Suzuki Marine, “Suzuki are always moving forward and continuing to develop our product range to meet the needs of our customers. With these two new models, Suzuki is bringing serious advantages in fuel-efficiency and performance to a key sector of the Australian and New Zealand boating market.”

Suzuki’s New DF300 Provides the Ultimate in Efficiency and Power The original, innovative, award-winning DF300 broke new ground, setting a new benchmark for performance and power from a compact and lightweight outboard.

Now Suzuki has taken this ultimate outboard to the next level. The addition of Suzuki’s Lean Burn Control technology as well as a new Oxygen (O2) Feedback Control system will provide boaters with a dramatic improvement in fuel economy as well as environmentally-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% more economical than the current DF300, and without sacrificing on any of the power for which the original model was already famous. In essence — the best is about to get a whole lot better!

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. This improves the fuel economy across a much 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.

In another first, 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. Heavier than the fuel, water accumulates at the bottom of the fuel filter. A float that is heavier than the fuel and lighter than water will be incorporated in the filter and will activate a switch when it rises over a permissible amount. This will then trigger an alert on the console that signals to the operator that there is water in the fuel. On the digital gauges, a WATER IN FUEL message appears. At the same time, a buzzer sounds when the engine is in neutral.

All of these new features make the DF300 even more appealing to both leisure boaters and commercial operators.

According to Greg Haines, of Haines Suzuki Marine, “Suzuki engineers are always striving for perfection so with this new technology we have made our flagship engine even better. Once again, Suzuki’s technology is set to give our four strokes the edge when it comes to fuel efficiency and clean, environmentally-friendly operation without sacrificing performance.”


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