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FourStroke
75-115 hp

None More Durable. Or Efficient.

Tuned for max acceleration and throttle response.

  • Engine type Inline 4
  • Displacement (L) 2.1
  • Displacement (L) 2.1
  • Full throttle RPM 5000-6000
  • Steering Big Tiller Compatible, Dual Cable Mechanical, Electro-Hydraulic Power Steering Optional on Duals, Hydraulic power steering
  • Dry weight *Lightest model available 363 lbs / 165 kg

The specifications displayed here may not be indicative of the entire engine family; click on the “See All Models and Specs” link to view the specs in detail.

See All Models and Specs

Lightweight & Fuel Efficient

Lightweight & Fuel Efficient

Mercury’s world-renowned engineering team has packed incredible power into these lighter, compact four-cylinder single-overhead-cam engines. The 115hp weighs 20 pounds less than its closest four-stroke competitor, making it the world’s lightest low-emissions outboard in its power range.

Dry weight specification is for the lightest-version model. Comparative weights refer to base engines without oil, propeller or integral steering cylinder. Weights based on Owner’s Manual specifications.
Counter-Rotation

Counter-Rotation

Do you like to boat offshore even though you’re not in the market for a big boat? For the first time, Mercury is offering a 115hp FourStroke with left-hand rotation. Two of these mid-range monsters on your transom provide the maneuverability and get-home safety of higher-horsepower twins at a price that’s easier on your wallet. Unlike competitive dual 115hp engines, dual 115 Mercury FourStrokes are Command Thrust models, which swing V6-class propellers, such as Enertia series to deliver improved acceleration and better boat control in rough water.

*Available only on 115 hp

Bigger Footprint.

Bigger Footprint.

The larger Command Thrust gearcase creates a bigger footprint in the water, which provides more leverage to control your boat. The larger torpedo, combined with a bigger-diameter prop, can lift a heavy boat onto plane more easily and hold it there at lower speeds without impacting top speed.

Worry-free

Worry-free

The same lifetime maintenance-free valvetrain design found in our 150 FourStroke engines makes the 75-115hp FourStroke outboards incredibly durable.

Powerful & Efficient

Powerful & Efficient

Less weight and high displacement mean Mercury’s new 75 - 115 FourStrokes generate abundant torque and immediate power. Because they don’t have to work as hard as heavier engines or those with lower displacement, these engines make boats plane faster, accelerate better and provide optimal fuel efficiency at cruising speed.

Quiet & Smooth

Quiet & Smooth

Customers tell us they can barely hear these outboards running – especially at idle – because Mercury® successfully reduced noise and vibration in these next-generation FourStrokes. The result is an ultra-smooth ride and the ability to enjoy nature without overpowering it.

Specifications

FourStroke: 75-115 hp

  • HP / kW
    • 115 / 84.6
    Engine type
    • Inline 4
    Displacement (L)
    • 2.1
    Displacement (L)
    • 2.1
    Full throttle RPM
    • 5000-6000
    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
    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
    • 2.38:1
    Dry weight *Lightest model available
    • 363 lbs / 165 kg
    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
    Trim system
    • Power Tilt
    • Power Trim
    Exhaust system
    • Through prop
    Counter rotation
    • Available
    Color
    • Phantom Black
    Compare With Other Products
  • HP / kW
    • 115 / 84.6
    Engine type
    • Inline 4
    Displacement (L)
    • 2.1
    Displacement (L)
    • 2.1
    Full throttle RPM
    • 5000-6000
    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
    Steering
    • Big Tiller Compatible
    • Dual Cable Mechanical
    • Hydraulic power steering
    Shaft length
    • 20" / 508 mm
    • 25" / 635 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
    Compare With Other Products
  • HP / kW
    • 90 / 66.2
    Engine type
    • Inline 4
    Displacement (L)
    • 2.1
    Displacement (L)
    • 2.1
    Full throttle RPM
    • 5000-6000
    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
    Steering
    • Big Tiller Compatible
    • Dual Cable Mechanical
    • Hydraulic power steering
    Shaft length
    • 20" / 508 mm
    • 25" / 635 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
    Compare With Other Products
  • HP / kW
    • 90 / 66.2
    Engine type
    • Inline 4
    Displacement (L)
    • 2.1
    Displacement (L)
    • 2.1
    Full throttle RPM
    • 5000-6000
    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
    Steering
    • Big Tiller Compatible
    • Dual Cable Mechanical
    • Hydraulic power steering
    Shaft length
    • 20" / 508 mm
    • 25" / 635 mm
    Gearcase ratio
    • 2.38:1
    Dry weight *Lightest model available
    • 363 lbs / 165 kg
    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
    Trim system
    • Power Tilt
    • Power Trim
    Exhaust system
    • Through prop
    Color
    • Phantom Black
    Compare With Other Products
  • HP / kW
    • 75 / 55.2
    Engine type
    • Inline 4
    Displacement (L)
    • 2.1
    Displacement (L)
    • 2.1
    Full throttle RPM
    • 4500-5500
    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
    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
    Compare With Other Products

Performance Tests

Read the reviews.

Mercury engineering reports and performance data. All available on-line for your review.

BHB - Boat House Bulletin Review
Test Date Engine Boat Prop Type
11/2013 115 hp FourStroke Tracker - Targa V-18 WT Black Max® BHB -
11/2013 115 hp FourStroke Tracker - Pro Guide V175 SC SpitFire® BHB -
11/2013 90 hp FourStroke Tracker - Pro Team 190 TX Black Max® BHB -
11/2013 115 hp FourStroke Tracker - Pro Team 190 TX Black Max® BHB -
10/2014 75 hp FourStroke Crestliner - 1700 Vision DC SpitFire® BHB -
10/2014 90 hp FourStroke Crestliner - 1700 VIsion SpitFire® BHB -
5/2014 115 hp FourStroke Lund - 1775 Impact SpitFire® BHB -
8/2014 90 hp FourStroke Lund - 1775 Pro Guide SpitFire® BHB -
5/2014 115 hp FourStroke Lund - 1850 Impact XS SpitFire® BHB -
5/2014 90 hp FourStroke Lund - 1675 Crossover SpitFire® BHB -
5/2014 90 hp FourStroke Lund - 1675 Impact SpitFire® BHB -
5/2014 90 hp FourStroke Lund - 1875 Pro Guide SpitFire® BHB -
9/2014 115 hp Command Thrust FourStroke Weldcraft - 188 Rebel Enertia® BHB -
8/2014 115 hp Command Thrust FourStroke Scout - 195 Sportfish Enertia® BHB -
7/2014 115 hp FourStroke Misty Harbor - 2285 SpitFire® BHB -
Test Date: 11/2013
Engine: 115 hp FourStroke
Boat: Tracker - Targa V-18 WT
Prop: Black Max®
Type: BHB -
Test Date: 11/2013
Engine: 115 hp FourStroke
Boat: Tracker - Pro Guide V175 SC
Prop: SpitFire®
Type: BHB -
Test Date: 11/2013
Engine: 90 hp FourStroke
Boat: Tracker - Pro Team 190 TX
Prop: Black Max®
Type: BHB -
Test Date: 11/2013
Engine: 115 hp FourStroke
Boat: Tracker - Pro Team 190 TX
Prop: Black Max®
Type: BHB -
Test Date: 10/2014
Engine: 75 hp FourStroke
Boat: Crestliner - 1700 Vision DC
Prop: SpitFire®
Type: BHB -
Test Date: 10/2014
Engine: 90 hp FourStroke
Boat: Crestliner - 1700 VIsion
Prop: SpitFire®
Type: BHB -
Test Date: 5/2014
Engine: 115 hp FourStroke
Boat: Lund - 1775 Impact
Prop: SpitFire®
Type: BHB -
Test Date: 8/2014
Engine: 90 hp FourStroke
Boat: Lund - 1775 Pro Guide
Prop: SpitFire®
Type: BHB -
Test Date: 5/2014
Engine: 115 hp FourStroke
Boat: Lund - 1850 Impact XS
Prop: SpitFire®
Type: BHB -
Test Date: 5/2014
Engine: 90 hp FourStroke
Boat: Lund - 1675 Crossover
Prop: SpitFire®
Type: BHB -
Test Date: 5/2014
Engine: 90 hp FourStroke
Boat: Lund - 1675 Impact
Prop: SpitFire®
Type: BHB -
Test Date: 5/2014
Engine: 90 hp FourStroke
Boat: Lund - 1875 Pro Guide
Prop: SpitFire®
Type: BHB -
Test Date: 9/2014
Engine: 115 hp Command Thrust FourStroke
Boat: Weldcraft - 188 Rebel
Prop: Enertia®
Type: BHB -
Test Date: 8/2014
Engine: 115 hp Command Thrust FourStroke
Boat: Scout - 195 Sportfish
Prop: Enertia®
Type: BHB -
Test Date: 7/2014
Engine: 115 hp FourStroke
Boat: Misty Harbor - 2285
Prop: SpitFire®
Type: BHB -

See All Performance Tests

Documents

Buy the Books
Buy the Books

You can order all available Mercury literature online or through any authorized Mercury dealer. Please have your outboard or sterndrive serial number before placing the order.

  • Operation, Maintenance, and Warranty Manuals
  • Parts Manual
  • Service Manual

Purchase a Manual

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