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DRIVE BY WIRE SERIES
POWERFUL V6 & IN-LINE 4
DF250AUN
Award-winning and exciting outboards, each one precision engineered to give you the power and performance you need, when you need it.
- DF250AUN
Proven Technology
By using our advanced technologies these V6 outboards deliver superior performance. They have dual overhead cam (DOHC) powerheads with four valves per cylinder and multi-point sequential electronic fuel injection. The 55° V-block design and offset driveshafts contribute to making them remarkably compact. The DF250AUN deliver high performance with our Variable Valve Timing (VVT), by maximising torque in the low/mid-range. .
When Only the Best is Good Enough
Our flagship V6 range provides the perfect power for both leisure and commercial craft. Suzuki served as the sole supplier of outboard motors to the London 2012 Olympic and Paralympic Games Sailing Regatta in which the DF300AP and DF200 along with the DF140, DF90A, and DF40A were used.
- POWERFUL
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- FUEL EFFICIENT
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- RELIABLE
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- INNOVATIVE
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Double water inlet
The engine's cooling system relies on water introduced from the leg. By using this double water inlet, the water flow to the foot is increased, which provides greater cooling efficiency. Placing the front inlet at the nose of the gearbox offers more water delivery, especially at high speeds. The second inlet is also mounted on the leg, allowing the DF300AP / 250AP motor to operate even in low water.
Large Air Intake with Water Separator
The DF250AUN is designed with a large air induction port to maximize airflow into the engine in order to obtain maximum power output. The increased airflow produces more low- to mid-range torque and provides a wide power band that is necessary in an outboard engine. Suzuki also designed the system with a water separator.
Suzuki's Lean Burn Control System
Suzuki's innovative Lean Burn Control System was first introduced on the DF90A/80A/70A to great acclaim from boaters and the media alike. It predicts fuel needs according to operating conditions allowing the engine to run on a more efficient fuel mixture through the use of a lean air-fuel ratio. It delivers its benefits over a wide operating range, providing significant improvements in fuel economy from low-speed operation into the cruising range. Combining this system with the Suzuki Precision Control electronic throttle and shift system allows the operator precise control over engine RPM for improved fuel economy over a wider operating range. This combination also delivers smooth power transitions throughout the entire RPM range.
- The data used in the graphs were obtained by internal testing under controlled conditions. Results will vary depending on operating conditions (boat design, size, weight, weather, etc.)
Cleaner, More Efficient Operation
Suzuki's advanced four-stroke technology delivers cleaner and more efficient operation that conforms to the Recreational Craft Directive (RCD) – Directive 2003/44EC of the European Parliament and of the Council, and has received three-star ratings from the California Air Resources Board (CARB).
Suzuki Precision Control (Electronic Throttle and Shift Systems)
Suzuki Precision Control is a technologically advanced computer-based control system that replaces the mechanical control cables found in conventional control systems with electronic wiring that eliminates the source of friction and resistance. While you enjoy smooth throttle and shift operation with minimal friction, the system's computer is processing and transmitting commands in real-time to actuators at the engine that deliver precise throttle control with smoother, decisive shifting. This is most evident in the low rpm range where operation is noticeably smooth and accurate. When combined with Suzuki's Lean Burn Control System it allows control of fuel and air flow to boost the limit of the controllable revolution range improving fuel economy over a wide operating range. Suzuki Precision Control also features built-in systems that help guard the engine and drive against damage due to mishandling, and its design and simple wiring make installation easy, reducing the time required for rigging and adjustment. The system offers precision control for single, twin or triple installation as well as dual station operation.
Suzuki's Advanced Technology Delivers the Utmost in Performance VVT (Variable Valve Timing)
Suzuki's engineers designed the 4.0-liter V6 engine with an aggressive cam profile that delivers maximum output and performance at high rpm. In coupling this cam profile with Suzuki's advanced Variable Valve Timing (VVT), the DF250AUN delivers the additional torque that outboards need for accelerating in the low to mid-range. VVT achieves this by adjusting the timing of the intake valves, allowing them to open before the exhaust valves are fully closed, creating a momentary overlap in the timing where both sets of valves are open. Using VVT, this overlap can be increased or decreased by altering intake timing with the camshaft resulting in optimum timing for low and mid-range operation.
Spherical Bore Throttle Body
An 81mm spherical bore throttle body smoothes the turbulent airflow into the engine that occurs as the throttle begins to open. Providing a smoother airflow during acceleration results in increased throttle control and stable engine operation at low rpm.
O2 Sensor Feedback Control System
Both the DF250AUN are equipped with an O2 Sensor Feedback Control system that enables emissions to be cleaner and more stable. The system controls the air to fuel ratio across each of the engine's operating ranges providing an optimum amount of fuel to the engine regardless of rpm.
Fuel Cooler
The cooler the fuel the denser it is, and the denser it is the better performance it delivers. Incorporating a fuel cooler in the DF250AUN fuel delivery system cools the fuel before it enters the engine. Providing the engine with an optimum fuel supply results in better combustion and more performance.
Long Track Intake Manifold
Another performance enhancing feature on the DF250AUN is a tuned long track intake manifold. Using long intake pipes tuned to provide smooth airflow into the engine the system provides the DF250AUN with enhanced low-end power.
Suzuki Water Detecting System
Water in the fuel can be the source of poor combustion, lower power output, and corrosion. To help protect the engine from moisture in the fuel, the DF250AUN is the first Suzuki outboard to utilize a water detecting fuel filter that alerts the operator with both visual and audio warnings when water is present in the fuel.
| MODEL | DF250AUN |
|---|---|
| RECOMMENDED TRANSOM HEIGHT mm | X:635, XX:762 |
| STARTING SYSTEM | Electric |
| WEIGHT kg *1 | X: 290, XX: 299 |
| ENGINE TYPE | DOHC 24-Valve |
| FUEL DELIVERY SYSTEM | Multi-Point Sequential Electronic Fuel Injection |
| NO. OF CYLINDERS | V6 (55-degree) |
| PISTON DISPLACEMENT cm3 | 4,028 |
| BORE ×STROKE mm | 98 x 89 |
| MAXIMUM OUTPUT kW | 220.7 |
| FULL THROTTLE OPERATING RANGE rpm | 5,700-6,300 |
| STEERING | Remote |
| OIL PAN CAPACITY Lit. | 8.0 |
| IGNITION SYSTEM | Fully-transistorized |
| ALTERNATOR | 12V 54A |
| ENGINE MOUNTING | Shear Mount |
| TRIM METHOD | Power Trim and Tilt |
| GEAR RATIO | 2.08:1 |
| GEAR SHIFT | F-N-R (Drive-by-wire) |
| EXHAUST | Through Prop Hub Exhaust |
| PROPELLER SELECTION (Pitch)*2 All propellers are the 3-blade type |
15"-27.5" |
- Dry weight: not including propeller and engine oil
- Please inquire at your local dealer for details of the propeller
- Suzuki Selective Rotation
The appearance, colors, and equipment of outboard motors may differ according to market and grade.
Specifications may change without prior notice.
*Manufacture data
