FourStroke 75-150hp

Embrace Possibility.

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.

See All Specifications

Features

START FAST. FINISH STRONG.

No matter what you do out on the water, it's nice to have the kind of power that blows your hat off now and then.

The kind of power that gets you up on plane quicker. Gets you out there faster. And gets you home in record time.

Performance-Inspired Configuration:The four-valve, dual-overhead-cam design delivers greater acceleration.

Adaptive Speed Control (ASC):Maintains engine speed (rpm) regardless of load or condition changes—without having to frequently adjust throttle position.

Advanced Hydrodynamics:The FourStroke’s gearcase is designed to reduce drag and deliver more stable, high-speed performance.

LIGHT AND MIGHTY.

Mercury engineers worked hard to cut every possible pound from our FourStroke engines for enhanced portability and improved performance.

Advanced Range Optimization (ARO) and Closed-Loop Fuel Control: Work together to adjust the fuel mixture and deliver the best possible fuel efficiency.

Premium Power and Torque: Big, bold power in a lightweight package delivers better maneuverability, greater acceleration, and maximum exhilaration.

26-inch Mounting Centers: The FourStroke’s narrow, 64-degree bank angle and single-point cowl latch system enable a tighter fit to the engine block for a smaller profile.

SPECIFICATIONS

  • 150
  • 115
  • 90
  • 75

FourStroke 150

HP / kW
  • 150 / 110
Engine type
  • 8-valve single overhead cam (SOHC)
  • Inline 4
Displacement (L)
  • 3.0
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
  • 3
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°)

FourStroke 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
  • 3
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°)

FourStroke 90

HP / kW
  • 90 / 67
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
  • 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
  • 3
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°)

FourStroke 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
  • 3
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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