Twelve years after starting the four-stroke revolution, with its award winning DF70 and DF60 outboards, Suzuki has reinvented the category again with the DF90A. The first of Suzuki’s new generation of four-strokes, the DF90A is a showcase of advancements and achievements – like digital sequential electronic fuel injection, a powerful 2.59:1 final drive ratio, and a zero-maintenance self-adjusting time chain. All of this comes in addition to Suzuki’s Lean Burn Control System, and newer models also sport the optional Suzuki Troll Mode System.
The DF90A hosts digital sequential electronic fuel injection, meaning it reads the electronic control unit monitors throttle setting, engine RPM, cylinder wall and air-intake temperature and atmospheric pressure all at once. All of these considerations cause the fuel injection to enter the combustion chamber at the most optimal opportunity. The benefits are smoother and faster acceleration, crisp throttle response and quick, reliable starting, no matter what the temperature is.
Glide into your favorite fishing honeyhole with Suzuki’s Troll Mode System. The engine’s revs can be adjusted in 50 rpm intervals by simply pressing the Troll Mode control switch from idle up to 1200 rpm, giving you control over your wake and speed.
This system incorporates an Offset Driveshaft and features
a first stage reduction between the crankshaft and drive shaft, and a second stage reduction inside the gear case. This design makes a larger gear ratio possible, allowing it to turn a large diameter propeller.
ADVANTAGE : ■ High propulsion efficiency with large diameter propeller.
■ Tremendous power to turn large diameter propellers, offering quick acceleration, even with a larger load.
The Suzuki Easy Start System no longer requires you to hold the key until the engine starts. Now, simply turn the key and release and the starter will stay engaged until the engine starts. The system also features more precise cylinder detec- tion, fuel injection and ignition control to deliver smootherand improved starts, more efficient combustion and greater fuel economy, making the outboard more environmentally friendly.
Over time, salt, sand and dirt build-up can restrict water flow in the cooling system thus causing damage. To help prevent such build-up, the DF90A and 70A are equipped with two freshwater flush ports that make flushing the cooling system much easier. With one port located on the port side of the down housing and a second on the front panel, you’ll always have easy access to the flushing system whether the boat is in or out of the water.