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 INFORMATION AND SPECIFICATIONS
 
ENGINE DETAILS
Mercury EFI outboards deliver reliable turnkey starts, improved fuel efficiency, and instant throttle response.
 
SPECIFICATIONS - 40 EFI
	
		
			
HP / kW
			
			
				
40 / 30
			
			
		
		
			
Engine type
			
			
				
Inline 3
			
			
		
		
			
Displacement (CID/CC)
			
			
				
45.6 / 747
			
			
		
		
			
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
			
			
				
Low oil pressure
				
Over-rev
				
Overheat
			
			
		
		
			
Compatible with SmartCraft digital technology
			
			
				
Yes
			
			
		
		
			
Starting
			
			
				
Electric (turn-key)
			
			
		
		
			
Steering
			
			
				
Remote
				
Tiller
			
			
		
		
			
Shaft length
			
			
				
15" / 381 mm
				
20" / 508 mm
			
			
		
		
			
Gearcase ratio
			
			
				
2.00:1
			
			
		
		
			
Dry weight *Lightest model available
			
			
				
204 lbs / 93 kg
			
			
		
		
			
CARB star rating
			
			
				
3
			
			
		
		
			
Bore and stroke
			
			
				
2.56 x 2.95" / 65 x 75 mm
			
			
		
		
			
Ignition
			
			
				
ECM 70
			
			
		
		
			
Fuel system
			
			
				
Electronic Fuel Injection (EFI)
			
			
		
		
			
Cooling system
			
			
				
Water-cooled with thermostat
			
			
		
		
			
Gear shift
			
			
				
F-N-R
			
			
		
		
			
Gearcase options
			
			
				
Standard
			
			
		
		
			
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
			
			
		
		
			
Lubrication system
			
			
				
Wet sump