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High Performance DOHC 12-Valve Engine

The DF40A and DF50A are powered by Suzuki's proven in-line three-cylinder 12-valve engine. This high performance engine has a displacement of 941cm3 and features a DOHC powerhead—the only DOHC engine used in the 40-50HP outboard class—with four valves per cylinder, and an air intake system optimised for maximum efficiency in the high rpm range. When designing this engine, Suzuki engineers also focused on improving mechanical efficiency. Each component was analysed and redesigned to reduce mechanical loss in order to improve efficiency. As an example, a new oil pump design makes internal oil flow more efficient, keeping moving parts better lubricated while using less energy. The combined reduction in mechanical loss throughout the engine contributes to better fuel economy.

Gallery

Gallery

Suzuki Lean Burn Control System

This intelligent fuel management system predicts fuel needs by monitoring engine performance and operating conditions to deliver a leaner fuel mixture to the engine. The result is remarkable improvements in fuel economy.

Multi-Point Sequential Electronic Fuel Injection

Suzuki pioneered the use of multi-point sequential electronic fuel injection in four-stroke outboards. This advanced, time-tested system gathers operating data from a series of sensors located in key areas on the engine, processes the data and calculates the optimum amount of fuel and air needed for the engine—all in real time. Boaters benefit with smooth starts, maximum operating efficiency, excellent fuel economy, and reduced emissions.

Features

Specifications

Recommended Transom Height (mm) L: 508
Weight Remote: L: 104kg
Tiller: L: 110kg
Engine type DOHC 12-Valve
Piston Displacement 941cm³
Maximum Output 36.8kW
Steering Remote (Mechanical)
Recommended Fuel RON91 / AKI87
Alternator 12V 19A
Gear Ratio 2.27 : 1
Exhaust Through Prop Hub Exhaust
Starting system Electric
Cylinders In-line 3
Fuel Delivery System Electronic Fuel Injection
Bore X Stroke 72.5 x 76mm
Full Throttle Operating Range 5,300 - 6,300rpm
Oil Pan Capacity 2.7L
Fuel Tank Capacity Separate 25L (optional)
Trim Method Power Trim and Tilt
Gear Shift F-N-R
Propeller Selection (Pitch) 9” - 17”

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