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Suzuki’s Award Winning Technology

At it’s first showing at a special preview at the 2003 Miami International Boat Show, the DF250 captured the NMMA (National Marine Manufacturers Association) 2003 Innovation Award making this the fourth Innovation Award for Suzuki.

The product of unrivaled expertise and world class technology, Suzuki’s four-stroke outboards have long been on the cutting edge of outboard their advanced technology, innovative ideas, and designs. We were the first to introduce a digital Electronic Fuel Injection four-stroke; an idea that allowed the DF60 and DF70 to receive further recognition from the International Marine Trades Exposition and Convention when they captured the IMTEC Innovation Award. We were the first to offer an automotive type self-adjusting timing chain in a four-stroke engine with performance enhancing dual overhead cams and four valves per cylinder. This brought us recognition again, when our DF40 and DF50 received the IMTEC Innovation Award making Suzuki the first manufacturer to receive this distinguished award two years in a row, and also giving us our third IMTEC award, again an industry first.
Relying on experience we’ve gained through the manufacture of not only outboards, but technologically- advanced motorcycles and automobiles, our engineers have put decades of knowledge into the design, development, and production of an all new V6 motor designed specifically for outboard use. This new V6 holds some of our most advanced innovative ideas to date, making it a showcase for Suzuki’s advanced four-stroke outboard technology.

DOHC 24-Valve with VVT Delivers High Performance

Our engineers designed a 3.6-liter V6 engine and an aggressive cam profile designed specifically for boost. However, our goal was not just to create an outboard that could deliver 250PS (184kW), but to create an outboard that could deliver high performance that suits its 250PS (184kW) output along with the many benefits that a four-stroke can deliver.

A high performance camshaft designed to deliver 250PS (184kW) produced the wanted power output, but to get the strong mid and low-end torque outboards need when accelerating requires altering valve timing. In general, only using a camshaft setting like those found in racing engines produces an engine that develops insufficient low and mid range torque. This is because the valve timing for intake and exhaust differs according to load and engine speed.


  • V-design Engine Block using a 55-degree Bank Angle
  • DOHC 24-valve Engine with Variable Valve Timing System
  • Multi-Stage Induction
  • Multi Point Sequential Electronic Fuel Injection
  • Direct Ignition
  • Offset Driveshaft
  • Two-stage Gear Reduction
  • Two-stage Camshaft Drive System
  • Flywheel Designed with Fan Blades
  • 54A Alternator
  • Counter Rotation Models Available
  • Tilt Limit Switch
  • Oil Change Reminder System
  • Low Oil Pressure Caution
  • Over-Rev Limiter
  • Overheat Cooling Water Caution
  • Self Diagnostic System
  • Neutral rpm Limiter
  • Anti-Corrosion Protection
  • Freshwater Engine Flush Port
  • High Performance 16-in. Diameter
  • Stainless Steel Propeller (Optional)
  • Multi Function Tachometer (Optional)
  • Specifications

    MODEL DF250
    ENGINE TYPE Four-Stroke DOHC 24 Valves
    FUEL DELIVERY SYSTEM Multi Point Sequential Electronic Fuel Injection
    TRANSOM HEIGHT mm (in.) X: 635(25)
    WEIGHT kg (Ibs.) X: 263 (580)
    NO. OF CYLINDERS V6 (55-degree)
    PISTON DISPLACEMENT cm3 (cu. in.) 3,614 (220.5)
    BORE × STROKE m/m (in.) 95 × 85 (3.74 × 3.35)
    MAXIMUM OUTPUT 250 (184)/5800
    PS (kW)/rpm
    FULL THROTTLE 5500-6100
    STEERING Remote
    IGNITION SYSTEM Fully-transistorized
    ALTERNATOR 12V 54A/3000rpm
    TRIM METHOD Power Trim and Tilt
    GEAR RATIO 2.29 : 1 (Two-stage Reduction Gear)
    EXHAUST Through Prop Hub Exhaust
    PROPELLER SIZE (in.) 16 × 17
    OPTIONAL 16 × 18.5
    16 × 20
    16 × 21.5
    16 × 23
    16 × 24.5