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Fourstroke 75-150hp Outboards 

Mercury FourStroke outboard motors are incredibly powerful and efficient, and they feature a wide range of applications. Crafted for less weight and high displacement, they generate abundant torque and immediate power. And because they don’t have to work as hard as heavier engines or those with lower displacement, they make boats plane faster and accelerate better, and they provide optimal fuel efficiency at cruising speed. 

ENGINE INFORMATION AND SPECIFICATIONS 

Select Horsepower 

Engine Details 

Get massive displacement and power from the lightest, easiest-to-maintain 150hp FourStroke on the market. Great for bass, aluminum console, runabout open bow, and offshore fishing boats and pontoons. 

Specifications - 150 

HP / kW 
150 / 110 
Engine type 
8-valve single overhead cam (SOHC) 
 
Inline 4 
Displacement (L) 
Full throttle RPM 
5000-5800 
Air induction 
Performance-Tuned Scroll Intake Manifold 
Fuel induction system 
Computer Controlled Multi-Port Electronic Fuel Injection (EFI) 
Alternator amp / Watt 
60 amp / 756 watt (Belt-Driven) 
Recommended fuel 
Unleaded Regular 87 Octane Minimum (R+M/2) or 90 RON 10% Ethanol Maximum 
Recommended oil 
Mercury FourStroke Oil 10W-30 
Engine protection operator warning system 
SmartCraft Engine Guardian 
Compatible with SmartCraft digital technology 
Yes 
Starting 
Electric (turn-key) 
 
Smart Start Electric 
Controls 
Mechanical throttle & shift 
Steering 
Big Tiller Compatible 
 
Dual cable mechanical 
 
Electro-Hydraulic Power Steering Optional on Duals 
 
Hydraulic power steering 
Shaft length 
20" / 508 mm 
 
25" / 635 mm 
Gearcase ratio 
1.92:1 
Dry weight *Lightest model available 
455 lbs / 206 kg 
CARB star rating 
Bore and stroke 
4.0 x 3.6" / 102 x 92 mm 
Ignition 
SmartCraft ECM 70 Digital Inductive 
Fuel system 
Electronic Fuel Injection (EFI) 
Cooling system 
Water-cooled with thermostat 
Gear shift 
F-N-R 
Gearcase options 
Standard 
Trim system 
Power Tilt 
 
Power Trim 
Exhaust system 
Through prop 
Counter Rotation 
Available 
Color 
Phantom Black 
Lubrication system 
Wet sump 
Oil Capacity 
6.3 qts / 6.0l 
Maximum Trim Range 
22 (-6 to 16) 
Maximum Tilt Range 
73 (-6 to 67) 

Select Horsepower 

Engine Details 

The lightest low-emissions outboard in its power range. Great for deck, inshore fishing, bass, aluminum tiller, runabout open bow, inflatable rigid hull, and fish & ski boats. 

Specifications - 115 

HP / kW 
115 / 86 
Engine type 
8-valve single overhead cam (SOHC) 
 
Inline 4 
Displacement (L) 
2.1 
Full throttle RPM 
5000-6000 
Air induction 
Performance-Tuned Scroll Intake Manifold 
Fuel induction system 
Computer Controlled Multi-Port Electronic Fuel Injection (EFI) 
Alternator amp / Watt 
35 amp / 441 watt with water-cooled voltage regulator 
Recommended fuel 
Unleaded Regular 87 Octane Minimum (R+M/2) or 90 RON 10% Ethanol Maximum 
Recommended oil 
Mercury FourStroke Oil 10W-30 
Engine protection operator warning system 
SmartCraft Engine Guardian 
Compatible with SmartCraft digital technology 
Yes 
Starting 
Smart Start Electric 
Controls 
Mechanical throttle & shift 
Steering 
Big Tiller Compatible 
 
Dual cable mechanical 
 
Electro-Hydraulic Power Steering Optional on Duals 
 
Hydraulic power steering 
Shaft length 
20" / 508 mm 
 
25" / 635 mm 
Gearcase ratio 
2.07:1 or 2.38:1 (CT model) 
Dry weight *Lightest model available 
359 lbs / 163 kg; 363 lbs / 165 kg (CT model) 
CARB star rating 
Bore and stroke 
3.5 x 3.2" / 90 x 81 mm 
Ignition 
SmartCraft ECM 70 Digital Inductive 
Fuel system 
Electronic Fuel Injection (EFI) 
Cooling system 
Water-cooled with thermostat 
Gear shift 
F-N-R 
Gearcase options 
Command Thrust (CT) 
 
Standard 
Trim system 
Power Tilt 
 
Power Trim 
Exhaust system 
Through prop 
Shallow water trim range (degrees) 
20 
Color 
Phantom Black 
Lubrication system 
Wet sump 
Oil Capacity 
5.5 qts / 5.2 l 
Maximum Trim Range 
22 (-6 to 16) 
Maximum Tilt Range 
70 (-6 to 64) 

Select Horsepower 

Engine Details 

Made to provide outstanding acceleration and throttle response. Great for deck, inshore fishing, bass, aluminum tiller, aluminum console, runabout open bow, inflatable rigid hull, and fish & ski boats. 

Specifications - 90 

HP / kW 
225 / 168 
Engine type 
V8 
MidSection 
Conventional MidSection 
Displacement (CID/CC) 
279 CID 
Displacement (L) 
4.6L 
Cylinder Configuration 
V-8 [64 degree] with Dual Overhead Cam [DOHC] and 32-valves 
Full throttle RPM 
5600-6200 
Air induction 
Performance-Tuned Long-Runner Intake Manifold 
Fuel induction system 
Electronic Fuel Injection (EFI) Computer Controlled with Advanced Range Optimization 
Alternator amp / Watt 
85-amp (1071 Watt) with Idle Charge 
Compatible with SmartCraft digital technology 
Yes 
Starting 
Smart Start Electric 
Controls 
Mechanical throttle & shift 
Steering 
Big Tiller Compatible 
 
Dual cable mechanical 
 
Hydraulic power steering 
Shaft length 
20" / 508 mm 
 
25" / 635 mm 
Gearcase ratio 
2.07:1 or 2.38:1 (CT model) 
Dry weight *Lightest model available 
359 lbs / 163 kg; 363 lbs / 165 kg (CT model) 
CARB star rating 
Bore and stroke 
3.5 x 3.2" / 90 x 81 mm 
Ignition 
SmartCraft ECM 70 Digital Inductive 
Fuel system 
Electronic Fuel Injection (EFI) 
Cooling system 
Water-cooled with thermostat 
Gear shift 
F-N-R 
Gearcase options 
Command Thrust 
 
Standard 
Trim system 
Power Tilt 
 
Power Trim 
Exhaust system 
Through prop 
Shallow water trim range (degrees) 
20 
Color 
Phantom Black 
Lubrication system 
Wet sump 
Oil Capacity 
5.5 qts / 5.2 l 
Maximum Trim Range 
22 (-6 to 16) 
Maximum Tilt Range 
70 (-6 to 64) 

Select Horsepower 

Engine Details 

Enjoy the same lifetime maintenance-free valvetrain design found in our 150 FourStroke motors. Great for deck, inshore fishing, bass, aluminum console, runabout open bow, inflatable rigid hull, and fish & ski boats. 

Specifications - 75 

HP / kW 
75 / 56 
Engine type 
8-valve single overhead cam (SOHC) 
 
Inline 4 
Displacement (L) 
2.1 
Full throttle RPM 
4500-5500 
Air induction 
Performance-Tuned Scroll Intake Manifold 
Fuel induction system 
Computer Controlled Multi-Port Electronic Fuel Injection (EFI) 
Alternator amp / Watt 
35 amp / 441 watt with water-cooled voltage regulator 
Recommended fuel 
Unleaded Regular 87 Octane Minimum (R+M/2) or 90 RON 10% Ethanol Maximum 
Recommended oil 
Mercury FourStroke Oil 10W-30 
Engine protection operator warning system 
SmartCraft Engine Guardian 
Compatible with SmartCraft digital technology 
Yes 
Starting 
Smart Start Electric 
Controls 
Mechanical throttle & shift 
Steering 
Big Tiller Compatible 
 
Dual cable mechanical 
 
Hydraulic power steering 
Shaft length 
20" / 508 mm 
Gearcase ratio 
2.07:1 
Dry weight *Lightest model available 
359 lbs / 163 kg 
CARB star rating 
Bore and stroke 
3.5 x 3.2" / 90 x 81 mm 
Ignition 
SmartCraft ECM 70 Digital Inductive 
Fuel system 
Electronic Fuel Injection (EFI) 
Cooling system 
Water-cooled with thermostat 
Gear shift 
F-N-R 
Gearcase options 
Standard 
Trim system 
Power Tilt 
 
Power Trim 
Exhaust system 
Through prop 
Shallow water trim range (degrees) 
20 
Color 
Phantom Black 
Lubrication system 
Wet sump 
Oil Capacity 
5.5 qts / 5.2 l 
Maximum Trim Range 
22 (-6 to 16) 
Maximum Tilt Range 
70 (-6 to 64) 

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