Mercury FourStroke 40EFI

Held to a Higher Standard.

There are plenty of good reasons these outboards rule the water. Start with no-worry reliability. More low-end torque for excellent acceleration. Increased fuel economy and outstanding overall performance. Enhanced fuel injection (EFI models) for boosted efficiency. A robust electrical system with a high-output alternator to keep batteries charged and fishing electronics humming. They have everything you need and nothing you don't.

Engine Details

High-displacement, four-cylinder, single-overhead-cam design delivers optimum power and a smooth ride. Great for aluminum tiller, aluminum console, inflatable rigid hull (RIB) and soft hull, watersports, and fish & ski boats.
Specifications - 40EFI
HP / kW
  • 40 / 30
Engine type
  • Inline 4
Displacement (CID/CC)
  • 60.8 / 995
Full throttle RPM
  • 5500-6000
Fuel induction system
  • 2 valves per cylinder, single overhead cam (SOHC)
Alternator amp / Watt
  • 18 amp / 226 watt
Recommended fuel
  • 87 octane / up to 10% ethanol
Recommended oil
  • Mercury FourStroke 25W40 Marine Oil
Engine protection operator warning system
  • SmartCraft Engine Guardian
Compatible with SmartCraft digital technology
  • Yes
Details
Starting
  • Electric (turn-key)
Steering
  • Big Tiller
  • Remote
Shaft length
  • 20" / 508 mm
Gearcase ratio
  • 2.33:1
Dry weight *Lightest model available
  • 260 lbs / 118 kg
CARB star rating
  • 3
Bore and stroke
  • 2.56 x 2.95" / 65 x 75 mm
Ignition
  • ECM 07 Digital Inductive
Fuel system
  • Electronic Fuel Injection (EFI)
Cooling system
  • Water-cooled with thermostat
Gear shift
  • F-N-R
Gearcase options
  • Command Thrust
Trim system
  • Gas assist
  • Power Tilt
  • Power Trim
Exhaust system
  • Through prop
Shallow water trim range (degrees)
  • 20
Remote fuel tank (optional)
  • Yes
Color
  • Phantom Black