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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.

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 Body Color Pearl Nebular Black or Cool White
 Recommended Transom Height (inches) 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 (Tiller Kit Optional)
 Choke N/A
 Oil Pan Capacity quarts (liter) 2.9 (2.7)
 Ignition System Solid State Direct Ignition
 Alternator 12V 19A
 Trim Position Power Trim and Tilt
 Gear Ratio 2.27:1
 Standard Propeller Optional See Dealer
 Propeller Selection 9 - 17