Outboard engine HDEF40 EFI

gasolinefor boatwater-cooled

Overview
Programmed Electronic Fuel Injection (EFI) outboard engine engineered for responsive throttle control and efficient combustion. The HDEF40 EFI is a 3-cylinder, 4-stroke unit using the DELPHI EFI system to optimize ignition timing at start-up and under varying loads.

Key features

• Quick starts: EFI automatically adjusts the air–fuel mixture for reliable cold starts and fast warm-up; electric key start.
• Reduced noise: Reverse Exhaust Relief routes exhaust through the propeller to lower running noise.
• Engine Alert System: Continuously monitors critical functions (temperature, oil pressure) and notifies the operator of faults.
• Power Thrust design: Higher gear ratio increases forward and reverse thrust for improved maneuverability.
• Cruising fuel economy: Multi-point fuel injection with long intake tracks adapts mixture to speed and load, improving efficiency and reducing fuel consumption by up to 20% at cruise.

Notes
Specifications, equipment and materials may change without notice due to ongoing product improvements.

Technical specifications

• Model: HDEF40 EFI
• Max. power: 29.4 kW (40.04 HP)
• Max. RPM: 5000–5800 RPM
• Engine type: 4-stroke
• Cylinders: 3
• Displacement: 747 cc
• Bore x Stroke: 65 x 75 mm
• Weight: L: 105.5 kg
• Gear shifting: F-N-R
• Ignition: ECM
• Cooling: Water-cooled
• Starting: Electric start
• Operation: Rear / Front operation
• Fuel tank capacity: 24 L