2018 Suzuki DF40A 40HP 4-Stroke Outboard Motor

The 2018 Suzuki DF40A 40HP outboard motor is a technologically advanced marine engine designed to deliver excellent performance, fuel efficiency, and durability. It is the only engine in its class featuring a DOHC (Dual Overhead Camshaft) design combined with a maintenance-free oil-bathed timing chain, providing long-term reliability with minimal maintenance.

Suzuki’s advanced Lean Burn Control System automatically adjusts the air-fuel mixture to optimize fuel consumption, helping boaters travel longer distances with less fuel usage. Combined with multi-point sequential electronic fuel injection (EFI), the DF40A offers responsive throttle control and smooth engine performance.

This outboard motor also includes Suzuki Troll Mode System, allowing operators to precisely control engine speed at low RPM—ideal for trolling while fishing.

Recognized for its innovation, the DF40A engine received the NMMA Innovation Award at the Miami Boat Show, awarded by the Boating Writers of America for outstanding marine engineering.

The Suzuki DF40A is designed for reliability, quiet operation, and easy maintenance, making it a popular choice for boat owners looking for dependable performance on both freshwater and saltwater environments in Australia and New Zealand.

Key Features

DOHC High-Performance Engine

The Dual Overhead Camshaft (DOHC) 12-valve engine design delivers improved efficiency, smoother power delivery, and stronger performance.

Multi-Point Electronic Fuel Injection (EFI)

Suzuki’s advanced multi-point sequential EFI system improves fuel atomization for better throttle response, smoother operation, and increased fuel efficiency.

Suzuki Lean Burn Control System

This intelligent fuel management system monitors engine performance and adjusts the air-fuel mixture for maximum fuel economy and reduced emissions.

Maintenance-Free Timing Chain

The oil-bathed timing chain system eliminates the need for regular belt replacement while improving durability and long-term engine reliability.

Suzuki Troll Mode System

Allows precise engine speed adjustment at low RPM, making it ideal for trolling when fishing.

Easy Start System

Suzuki’s Easy Start technology ensures quick and effortless engine starts.

Power Trim and Tilt

Provides improved control and easier boat handling by allowing operators to adjust the engine angle while underway.

Advanced Corrosion Protection

Suzuki’s anti-corrosion system and durable marine coatings protect engine components from harsh saltwater environments.

Technical Specifications

Engine

Engine Type: DOHC 12-Valve
Cylinders: 3
Displacement: 941 cc (57.4 cu in)
Bore × Stroke: 72.5 mm × 76 mm
Maximum Power: 40 HP
Full Throttle Range: 5000 – 6000 RPM

Fuel System

Fuel Delivery: Multi-Point Sequential Electronic Fuel Injection
Ignition: Solid State Direct Ignition
Starting System: Electric Start

Gear & Steering

Gear Ratio: 2.27:1
Steering: Remote Steering

Electrical

Alternator Output: 12V – 19A

Dimensions

Recommended Transom Height: 20 inches

Capacities

Engine Oil Capacity: 2.9 quarts (2.7 liters)

Weight

Dry Weight: 229 lbs (104 kg)

Trim

Trim System: Power Trim and Tilt

What’s Included in the Box

• Suzuki DF40A 40HP Outboard Motor

• 3.1 Gallon Fuel Tank

• Fuel Line Assembly

• Standard Aluminum Propeller

• Owner’s Manual

• Tool Kit

• Manufacturer 3-Year Warranty