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MERCURY
FOURSTROKE (EFI) 40

Mercury EFI outboards deliver reliable turnkey starts, improved fuel efficiency, and instant throttle response.

HP / kW40 / 30
Engine typeInline 3
Displacement (CID/CC)45.6 / 747
Full throttle RPM5500-6000
Fuel induction system2 valves per cylinder, single overhead cam (SOHC)
Alternator amp / Watt18 amp / 226 watt
Recommended fuel87 octane / up to 10% ethanol
Recommended oilMercury FourStroke 25W40 Marine Oil
Engine protection operator warning systemLow oil pressure
Over-rev
Overheat
Compatible with SmartCraft digital technologyYes
StartingElectric (turn-key)
SteeringRemote
Tiller
Shaft length15" / 381 mm
20" / 508 mm
Gearcase ratio2.00:1
Dry weight *Lightest model available204 lbs / 93 kg
CARB star rating3
Bore and stroke2.56 x 2.95" / 65 x 75 mm
IgnitionECM 70
Fuel systemElectronic Fuel Injection (EFI)
Cooling systemWater-cooled with thermostat
Gear shiftF-N-R
Gearcase optionsStandard
Trim systemGas assist
Power Tilt
Power Trim
Exhaust systemThrough prop
Shallow water trim range (degrees)20
Remote fuel tank (optional)Yes
ColorPhantom Black
Lubrication systemWet sump