FEATURE.01
12.0:1 COMPRESSION RATIO
Our solution to developing 80 horsepower per liter in a V6 350 horsepower engine was to increase the compression ratio to 12.0:1, the highest compression ratio ever for a production outboard engine. In order to make this work without knocking (a typical problem at this ratio), we developed systems to mix cooler air with well-atomized fuel to provide optimal conditions for complete, and controlled combustion.

SUZUKI DUAL PROP SYSTEM
The dual prop system efficiently turns 350 horsepower output into propulsion under water.As an added benefit, because each propeller rotates in a different direction, exceptional stability is achieved.

SUZUKI DUAL LOUVER SYSTEM
The DF350A is equipped with a double louver at the air intake to remove water from the air taken into cowl.
The double louver removes water from the air. Incorporating a direct intake system, Suzuki’s dual louver system contributes to higher engine output.

DUAL INJECTOR
Dual injectors deliver just the right amount of fuel at just the right time into the cylinder.
This dual injector contributes to higher output and better fuel efficiency. 

OFFSET DRIVESHAFT
The Offset Driveshaft allows us to make our engines smaller by moving the outboard’s centre of gravity forward, while improving weight distribution, power output, balance and reducing vibration.

2-STAGE GEAR REDUCTION
The DF350A outboard also incorporates a 2-Stage Gear Reduction which results in a large reduction gear ratio. It delivers powerful torque for quick acceleration and great top-end speed.

DIRECT AIR INTAKE

A new engine cover design provides the direct intake system with a smoother, cooler flow of air boosting engine operating efficiency.

SUZUKI PRECISION CONTROL (ELECTRONIC THROTTLE AND SHIFT SYSTEM) Our sophisticated drive-by-wire system eliminates the friction and resistance of mechanical control cables. This gives smooth, precise control with crisp, immediate shifting, particularly at low revs and when maneuvering. The system can be configured with single, twin or triple installations, and for dual stations. Combined with our Lean Burn Control System, it helps improve fuel efficiency over a wide operating range.
	VARIABLE VALVE TIMING SYSTEM (VVT) Variable Valve Timing is used to vary intake timing with the camshaft to optimize timing for low to mid-range operation. This allows the engine to deliver maximum power output across its entire operating range producing greater low to mid-range torque for powerful acceleration. The entire process happens automatically leaving you to enjoy the power and performance.
SELF-ADJUSTING TIMING CHAIN The timing chain runs in an oil-bath, so it never needs lubricating, and is equipped with an automatic hydraulic tensioner, so it remains properly adjusted at all times. Simple, effective and maintenance-free.
	DUAL WATER INLET The engine’s cooling system relies on water supplied through low water intakes located on the lower unit. Utilizing this dual low water inlet configuration increases water flow into the lower unit, delivering greater cooling efficiency. Positioning the forward inlet by the gear case nose delivers a greater water supply, especially at high speeds. The second inlet is also positioned lower allowing the

SPECIFICATIONS

MODEL DF350A
RECOMMENDED TRANSOM HEIGHT mm (in.)
X : 635 (25)XX : 762 (30)
STARTING SYSTEM Electric
WEIGHT kg (Ibs.) *1
X : 330 (727)XX : 339 (747)
ENGINE TYPE V6 - 55° DOHC 24-Valve
Valve Train Drive Chain with Variable Valve Timing
FUEL DELIVERY SYSTEM Electronic Fuel Injection
NO. OF CYLINDERS 6
PISTON DISPLACEMENT ㎤ (cu.in.) 4,390 (267.9)
BORE × STROKE mm (in.) 98 (3.74) x 97 (3.82)
MAXIMUM OUTPUT kW (PS) 257.4 (350)
FULL THROTTLE OPERATING RANGE rpm 5,700 - 6,300
STEERING Remote
OIL PAN CAPACITY l (U.S./Imp. qt.) 8.0 (8.5)
IGNITION SYSTEM Fully-transistorized
ALTERNATOR 12V 54A
ENGINE MOUNTING Shear Mount
TRIM METHOD Power Trim and Tilt
GEAR RATIO 2.29:1
GEAR SHIFT F-N-R (Drive-by-Wire)
EXHAUST Through Prop Hub Exhaust
PROPELLER SELECTION (Pitch) *2
All propellers are the 3-blade type
FRONT: 3×15 1/2×19.5-31.5
REAR: 3×15 1/2×19.5-31.5