DF 40 HP Suzuki Outboard


DF40 Suzuki OutboardThis 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.

Download A Brochure On This 40 Suzuki Outboard


Shaft Size


DF 40ATL1 Suzuki Outboard


On Order

DF 40 Specifications

Transom Height (inches)

L: 20

Starting System


Weight LBS

L: 229

Engine Type

DOHC 12-Valve

Fuel Delivery System

Multi Point Sequential Electronic Fuel Injection

No. Of Cylinders


Piston Displacement inches (cc)

57.4 (941)

Bore X Stroke Inches (mm)

2.85 x 2.99 (72.5 x 76)

Maximum Output HP


Operating Range (RPM)

5000 - 6000


Remote (Tiller Kit Optional)



Oil Pan Capacity quarts (liter)

2.9 (2.7)

Ignition System

Solid State Direct Ignition


12V 19A

Trim Position

Power Trim and Tilt

Gear Ratio


Standard Propeller

Optional See Dealer

Propeller Selection

9 - 17

Engine Type


Shaft Length

Suzuki Models

DF = 4-Stroke
S = 15"
L = 20”
T= Power Trim And Tilt
A = New Generation 4-Stroke Model


  • 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