2025 Suzuki DF40ATL5
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.
Specifications
Model: DF40ATL5
Horsepower: 40
Shaft Length: 20" (Long)
Steering: Remote (Tiller Kit Optional)
Starting: Electric
Trim & Tilt: Power Trim and Tilt
Fuel Delivery: Multi-Point Sequential Electronic Fuel Injection
Fuel Tank: External
Fuel Type: Unleaded Gasoline (87 octane)
Cylinders: 3
Weight: 229 lbs
Displacement: 57.4 (941)
Bore & Stroke: 2.85 x 2.99 (72.5 x 76)
Full Throttle RPM Range: 5000 - 6000
Ignition System: Solid State Direct Ignition
Induction Scavenging: DOHC 12-valve
Oil Type: SAE 10W-30 or SAE 10W-40
Oil Capacity: 2.9 quarts (2.7 liters)
Alternator: 12V 19A
Cooling System: Water-Cooled
Gear Ratio: 2.27:1
Gear Shift: Forward-Neutral-Reverse
Propeller Pitch Selection: 9” – 23”