A REVOLUTION IN INNOVATION

Whether you’re boating for leisure or to make a living, our big-block range delivers the power and performance you demand. Suzuki’s DF150 is based on an in-line four-cylinder DOHC powerhead with a 2,867cm³ (174.9 cu.in.) displacement. While the large displacement contributes greatly to producing exceptional acceleration and torque, it doesn’t mean that they are comparatively larger and heavier in size. On the contrary, Suzuki’s engineers have targeted this big block motor to be one of the lightest four strokes in the 150 HP class.

Big Block—High Performance Engine

The new DF175AP/150AP development team based both of these new Suzuki outboards on a big block inline four-cylinder four-stroke engine with a 2,867cm3 displacement. The block is topped with a DOHC powerhead that provides four-valves per cylinder for high performance. While the large displacement allows both to deliver exceptional acceleration and velocity, our engineers made sure that the outboard’s final dimensions are as compact and lightweight as possible.

Both outboards feature some of the best of Suzuki’s advanced technologies that have been developed to extend engine performance.

High 10.2:1 Compression Ratio and Largest in Class Displacement*2

Compression and displacement each play important roles in delivering performance and power output. Displacement has a direct effect on acceleration and torque so a bigger displacement is generally going to deliver more of both. Higher compression ratios allow the engine to get more output out of the combustion process resulting in noticeable improvements in performance and power. Drawing on our extensive motorsports experience and expertise in building race engines, Suzuki engineers have combined a 2,867cm3 displacement (the largest in each outboard’s class) with a high compression ratio of 10.2:1 to obtain great performance from these compact engines.
*2: as of Aug, 2016.

Suzuki Selective Rotation

Large boats equipped with multi-outboard installations generally pair a standard rotation outboard with a counter-rotation model to keep the boat traveling in a straight line and on an even keel. Once requiring the purchase of a dedicated counter-rotation model, Suzuki’s innovative Suzuki Selective Rotation eliminates that need by incorporating a special, unified design of gears, shaft, and bearings in the lower unit that allow the outboard to operate reliably and efficiently in either direction. Available on both the DF175AP and DF150AP, counter-rotation operation requires an optional activation switch that connects to a circuit inside of the engine compartment plus the installation of a counter-rotation propeller*1.

*1: Consult with your dealer before changing Standard Rotation to Counter-Rotation (or vice versa).

The optional connector and additional propeller are needed to change the outboards rotation.

S emi-Direct Air Intake System

Suzuki Precision Control (Electronic Throttle and Shift System)

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, triple or quad installations as well as dual station operation.
lean_burn_logo_Suzuki

Suzuki Lean Burn Control System

Counter Balancer System

O2 Sensor Feedback Control System

A key sensor in the electronic fuel injection system, the O2 Sensor Feedback Control system provides accurate, real-time information that the ECU uses to manage the fuel/air ratio as operating conditions change. Utilized on many of Suzuki’s high-end outboards, the O2 Sensor Feedback Control system helps maintain optimum engine operating efficiency across the engine’s full operating range.

  Resonator

The engine’s exhaust system is a well-known source of engine noise, but another, often overlooked source is the intake manifold. Air being sucked into the intake manifold at high velocities can generate a harsh sound. The DF175AP/DF150AP incorporate an air intake resonator that reduces such noise keeping operation exceptionally quiet.

Suzuki Keyless Start System*3

Suzuki’s Keyless Start system utilizes a proximity key-fob that transmits an access code to the engine’s starting system. As long as you have the key-fob on your person, all you need to do is stand within one meter of the console, connect the emergency switch cord, turn on the main switch then start the outboard with a push of a button. With the key remaining safely in your pocket, the system offers simple, stress-free operation while reducing the risk of a lost key. The system also makes for an excellent theft deterrent since the outboard will not start without the proper access code. The key-fob also floats so should it ever go overboard you can retrieve it.

*3: Availability may differ in some regions. Please contact your local Suzuki dealer for more information.

High Output Alternators

Today’s boats are equipped with a wide array of electronics that demand an ample flow of power to keep them running. With that in mind, Suzuki engineers have equipped the DF175AP and DF150AP with an alternator that produces a majority of its maximum 44A (12V) output with the motor running at a low 1,000 rpm — enough power for most circumstances.

Suzuki Water Detecting System