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DF40A

This is the only engine in the 40 hp class to offer DOHC performance, and also the only engine in its class to incorporate a maintenance-free, oil-bathed timing chain, which provides the outboard with increased durability and maintenance free operation. With larger displacements for increased power and performance, Suzuki's Lean Control System for improved fuel economy and designs that are more compact and lighter in weight than the predecessor, the new DF40A engines also incorporate the Suzuki Troll Mode System.  During the 2011 Miami Boat Show, the Boating Writers of America presented Suzuki Marine with the NMMA Innovation Award for the DF40A/DF50A.

Features
Multi Point Sequential Electronic Fuel Injection
Suzuki Lean burn Control System
Suzuki Troll Mode System
Direct Ignition
Suzuki Easy Start System
Over-Rev. Limiter
Low Oil Pressure Caution
Fully Transistorized Ignition
Timing Chain
Fresh Water Flushing System
Power Trim and Tilt
Suzuki Anti-Corrosion System

  • DF40A
Specs:  
Recommended Transom Height (inches)L: 20
Starting SystemElectric
Weight LBSL: 229
Engine TypeDOHC 12-Valve
Fuel Delivery SystemMulti Point Sequential Electronic Fuel Injection
No. Of Cylinders3
Piston Displacement inches (cc)57.4 (941)
Bore X Stroke Inches (mm)2.85 x 2.99 (72.5 x 76)
Maximum Output HP40
Operating Range (RPM)5000 - 6000
SteeringRemote (Tiller Kit Optional)
ChokeN/A
Oil Pan Capacity quarts (liter)2.9 (2.7)
Ignition SystemSolid State Direct Ignition
Alternator12V 19A
Trim PositionPower Trim and Tilt
Gear Ratio2.27:1
Standard PropellerOptional See Dealer
Propeller Selection9 - 17