Suzuki / Mid-Range
Suzuki DF40A
The DF40A is the only engine in the 40 HP class to offer DOHC performance, and also the only to incorporate a maintenance-free, oil-bathed timing chain, which provides the outboard with improved durability and maintenance-free operation.
About this engine
The DF40A is the only engine in the 40 HP class to offer DOHC performance, and also the only to incorporate a maintenance-free, oil-bathed timing chain, which provides the outboard with improved durability and maintenance-free operation. With larger displacements for increased power and performance, Suzuki’s Lean Control System improves fuel economy with designs that are more compact and lighter in weight than their predecessors. The new DF40A engines also include the Suzuki Troll Mode System. The Boating Writers of America presented Suzuki Marine with the NMMA Innovation Award for the DF40A/DF50A, during the 2011 Miami Boat Show. An optional tiller package equipped with a Multi-Functional handle is now available, exclusively in Nebular Black.
Key features
- Go your own speed. — Glide into your favorite honeyhole with Suzuki’s Troll Mode System. The engine’s revs can be adjusted in 50 rpm intervals, giving you precise control pressing the Troll Mode control switch from idle up to 1200 rpm, allowing you control over
- Running like clockwork — The DF40A comes equipped with 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. A
Full specifications
- Body Color
- Pearl Nebular Black or White
- Transom Height (inches)
- S: 15 (TILLER MODEL ONLY) L: 20
- Starting System
- Electric
- Weight LBS
- L: 229
- Engine Type
- DOHC 12-Valve
- Fuel Delivery System
- Multi Point Sequential Electronic Fuel Injection
- No. Of Cylinders
- 3
- Piston Displacement inches (cc)
- 57.4 (941)
- Bore X Stroke Inches (mm)
- 2.85 x 2.99 (72.5 x 76)
- Maximum Output HP
- 40
- Operating Range (RPM)
- 5000 - 6000
- Steering
- Remote or Tiller
- Choke
- N/A
- Oil Pan Capacity quarts (liter)
- 2.9 (2.7)
- Ignition System
- Solid State Direct Ignition
- System Output
- 12V 19A
- Trim Position
- Power Trim and Tilt
- Gear Ratio
- 2.27:1
- Standard Propeller
- Optional See Dealer
- Propeller Selection
- 9 - 17
