Part revolution. Part evolution.

Mercury® FourStroke Outboards

FourStroke technology and Mercury. Always moving forward. With boater-driven innovations and technologies. Like electronic fuel injection. On-board digital monitoring that protects your engine. And a total commitment to corrosion protection utilizing hard-coat anodizing and a superior multi-step paint process. Mercury FourStroke engines have consistently set the bar for clean, quiet performance and low fuel consumption. Plus, no one has more models to fit your needs.

Mercury® FourStroke Outboards - Features

FourStroke

2.5 - 150 hp

Forget everything you know about FourStroke outboards. Ours change the game. Completely. They’re tougher, smaller, and lighter than any other FourStroke on the water. With a combination of performance and efficiency that will take your time on the water to a whole new level.

Thrustworthy power. Lightest weight.

The large displacement of our 75-150 hp FourStroke engines gives you a big edge when it comes to power and durability. The extra torque helps you get up on plane quicker, even when pulling skiers and tubers, or maneuvering a pontoon in the wind and current. All in the lightest, most compact designs in the industry.

Always ready. All season.

Start it up and go. Anytime. That's the whole idea with a Mercury® FourStroke. Because it’s as close as you can get to maintenance-free. Tougher components, reliable electronic fuel injection (on select models), available SmartCraft® digital monitoring. More quality time in engineering means more quality time on the water.

Fuel. Getting more out of every drop.

Electronic fuel injection in an outboard. Mercury® pioneered it and patented it. It's what makes Mercury FourStroke engines work harder, longer, and more efficiently. Instant starts. Clean, quiet operation. And cruise speed fuel economy that keeps more cash in your pocket and makes more water available to you than ever before (select models only).

Making four-strokes. Making history.

We’ve been developing four-stroke technology for decades. Perfecting it. Taking it to the next level. Making four-strokes lighter, stronger, and more reliable than anyone else in the business while still delivering on Mercury’s heritage of performance. Constant innovation and improvement. If you’re sitting still, you’re falling behind.

Corrosion protection. An all-out attack.

Mercury® has always been on the forefront of corrosion protection. Better alloys. Superior paints. Deeper R&D capabilities. Torturous testing in the toughest body of salt water in the world. Our own test tank. Mercury engines have gone through it all. And then some. We would have it no other way.

Three Year Corrosion Warranty
Three Year Limited Warranty

FourStroke 150 hp

FourStroke
150 hp

Stronger. Lighter. More Durable.

Massive displacement and the lightest 150 hp four-stroke in its class

  • Engine type 8-valve single overhead cam (SOHC), Inline 4
  • Displacement (L) 3.0
  • Full throttle RPM 5000-5800
  • Steering Big Tiller Compatible, Dual cable mechanical, Electro-Hydraulic Power Steering Optional on Duals, Hydraulic power steering
  • Dry weight *Lightest model available 455 lbs / 206 kg

Performance, Durability, Efficiency.

Performance, Durability, Efficiency.

Making 150 horsepower is easy for this 3.0-liter, four-cylinder, single-overhead-cam engine. Its generous displacement lets it churn out power without breaking a sweat. You get exceptional durability and long-term peace of mind.

Compact and Versatile.

Compact and Versatile.

It’s the lightest 150hp four-stroke outboard on the market. Smart design makes the 150hp Mercury FourStroke nearly 20 pounds lighter than its closest four-stroke competitor, and less than a battery weight heavier than a two-stroke. Potential uses for this engine are endless, including bay boats, boats with poling platforms and pontoons with swim platforms.

Propped to Perform.

Propped to Perform.

The Mercury Enertia® propeller is the perfect complement to the 150 FourStroke. Designed specifically for large four-stroke outboards with a revolutionary low-diameter/high-blade-area design and cast with the Mercury proprietary X7® propeller alloy, Enertia delivers phenomenal acceleration, top speed and durability.

Easy to Maintain.

Easy to Maintain.

Rather do it yourself? The no-spill oil-change system, an easy-access fuel filter and a lifetime maintenance-free valve train make the Mercury 150 FourStroke the easiest-to-maintain 150hp four-stroke on the market. Scan a QR code under the cowl to link with step-by-step video demonstrations.

Perfect for Repower.

Perfect for Repower.

The compact, lightweight design of the Mercury® 150hp FourStroke engine fits most transoms, including those with narrow engine wells and tight motor spacing. Rig it with mechanical or hydraulic steering, mechanical control and cable systems, and a full complement of analog or SmartCraft® gauges.

150hp

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 75-115 hp

FourStroke
75-115 hp

None More Durable. Or Efficient.

Tuned for max acceleration and throttle response.

  • Engine type 8-valve single overhead cam (SOHC), Inline 4
  • Displacement (L) 2.1
  • Full throttle RPM 5000-6000
  • Steering Big Tiller Compatible, Dual cable mechanical, Hydraulic power steering
  • Dry weight *Lightest model available 359 lbs / 163 kg
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.

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.

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.

Quieter Than the Competition.

Quieter Than the Competition.

The Mercury 115 FourStroke is quieter than the Yamaha F115B across the rpm band.

  • At idle, the Mercury is four decibels quieter than the Yamaha – the Yamaha is 25% louder.
  • At cruising speed, where normal conversations occur, the Yamaha generates almost 15% more noise.
  • At wide-open-throttle, the Mercury is more than eight decibels quieter – the Yamaha is 50% louder.
Testing performed by Mercury PD&E NVH staff at a Mercury Marine hemi-anechoic chamber (Sound Lab).

Smoother Than the Competition.

Smoother Than the Competition.

The Mercury 115 FourStroke has less vibration and rides smoother than the Yamaha F115B.

  • At forward idle, the Mercury’s vibration level at the driver’s seat is up to 50% lower than the Yamaha.
  • On the transom, the Yamaha puts out nearly five times more vibration than the Mercury – both at cruise and at full throttle.
Testing performed by Mercury PD&E NVH staff at a Mercury Marine test location on a 2013 Bayliner 170.

Propped to perform

Propped to perform

The Mercury Enertia® propeller is the perfect complement to the 75 - 115hp FourStroke Command
Thrust gearcases. Designed specifically for large fourstroke outboards with a revolutionary low-diameter / high-blade-area design and cast with the Mercury proprietary X7® propeller alloy, Enertia delivers phenomenal acceleration, top speed and durability.

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.

115hp

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
  • 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
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°)

115hp Command Thrust

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
  • 2.38:1
Dry weight *Lightest model available
  • 363 lbs / 165 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
  • Command Thrust
Trim system
  • Power Tilt
  • Power Trim
Exhaust system
  • Through prop
Shallow water trim range (degrees)
  • 20
Counter Rotation
  • Available
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°)

90hp

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
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°)

90hp Command Thrust

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
  • 2.38:1
Dry weight *Lightest model available
  • 363 lbs / 165 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
  • Command Thrust
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°)

75hp

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°)

FourStroke 40-60 hp

FourStroke
40-60 hp

Held to a Higher Standard

Enhanced fuel injection for boosted efficiency

  • Engine type Inline 4
  • Full throttle RPM 5500-6000
  • Steering Big Tiller Compatible, Remote, Tiller Kit
  • Dry weight *Lightest model available 260 lbs / 118 kg
Smooth and Strong Performance.

Smooth and Strong Performance.

A compact, single-overhead-cam design and long piston stroke give Mercury 40 - 60hp FourStroke outboards more low-end torque for excellent acceleration, even when pushing a heavy load.

The high-displacement, long-stroke, four-cylinder, single-overhead cam design provides optimum power and a smooth ride with Command Thrust models.

Thumbscrew Clamp Bracket.

Thumbscrew Clamp Bracket.

The 40hp manual start, long shaft (20" / 508mm), tiller steer model is also available with a thumbscrew mounting bracket. This bracket reduces the time and effort needed to install or remove the outboard from a boat's transom.

The Big Tiller.

The Big Tiller.

The optional center-mounted Big Tiller offers optimal control. A longer tiller grip incorporates a convenient power trim switch, the shift lever is close at hand, and an optional digital troll control adjusts engine speed as low as 700 rpm in 10-rpm increments.

Turnkey starts / fuel efficiency.

Turnkey starts / fuel efficiency.

Mercury Electronic Fuel Injection (EFI) delivers reliable turnkey starts, improved fuel efficiency, instant throttle response and protection against low-quality-fuel problems.

Electrical support.

Electrical support.

An 18-amp high-output alternator keeps batteries charged and fishing electronics humming.

SpitFire and SpitFire Pontoon Propellers.

SpitFire and SpitFire Pontoon Propellers.

The advanced design of the Mercury® Spitfire® aluminum propeller combines four aggressive blades with high rake angles and extra cup for tenacious holding and 25% quicker acceleration, with no loss in top speed compared to a three-blade Mercury Black Max® propeller of the same pitch.

The advanced design of the Mercury Spitfire Pontoon four-blade aluminum propeller maximizes blow-out resistance, with extra blade area for outstanding hold in turns and extra thrust around the dock that pontoon boaters need and demand. The Spitfire Pontoon propeller is available for 40 - 60hp Command Thrust engines in 10-, 11- and 13-pitch sizes.

More Control, Hole Shot and Mid-Range Power.

More Control, Hole Shot and Mid-Range Power.

Increased thrust is delivered by a 2.33:1 gear ratio with 44% larger gears. The desmodromic shifting is ultra-smooth.

A gearcase that sits deeper in the water, a bigger prop with 20% more blade surface, and lower gear ratio provide unmatched thrust, maneuverability and boat lift.

Value

Value

The 60 hp Command Thrust matches the acceleration and fuel efficiency of our competitor’s more expensive 70 hp outboard model.

60hp EFI Command Thrust

HP / kW
  • 60 / 45
Engine type
  • Inline 4
Displacement (CID/CC)
  • 60.8 / 995
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
  • SmartCraft Engine Guardian
Compatible with SmartCraft digital technology
  • Yes
Starting
  • Electric (turn-key)
Steering
  • Big Tiller Compatible
  • Remote
  • Tiller Kit
Shaft length
  • 20" / 508 mm
  • 25" / 635 mm
Gearcase ratio
  • 2.33:1
Dry weight *Lightest model available
  • 260 lbs / 118 kg
CARB star rating
  • 3
Bore and stroke
  • 2.56 x 2.95" / 65 x 75 mm
Ignition
  • ECM 07 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 Trim
Exhaust system
  • Through prop
Shallow water trim range (degrees)
  • 20
Remote fuel tank (optional)
  • Yes
Color
  • Phantom Black
Lubrication system
  • Wet sump

60hp EFI

HP / kW
  • 60 / 45
Engine type
  • Inline 4
Displacement (CID/CC)
  • 60.8 / 995
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
  • SmartCraft Engine Guardian
Compatible with SmartCraft digital technology
  • Yes
Starting
  • Electric (turn-key)
Steering
  • Big Tiller Compatible
  • Remote
  • Tiller Kit
Shaft length
  • 20" / 508 mm
Gearcase ratio
  • 1.83:1
Dry weight *Lightest model available
  • 247 lbs / 112 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
  • Power Trim
Exhaust system
  • Through prop
Shallow water trim range (degrees)
  • 20
Remote fuel tank (optional)
  • Yes
Color
  • Phantom Black
Lubrication system
  • Wet sump

50hp EFI Command Thrust

HP / kW
  • 50 / 37
Engine type
  • Inline 4
Displacement (CID/CC)
  • 60.8 / 995
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
  • SmartCraft Engine Guardian
Compatible with SmartCraft digital technology
  • Yes
Starting
  • Electric (turn-key)
Steering
  • Big Tiller Compatible
  • Remote
  • Tiller Kit
Shaft length
  • 20" / 508 mm
Gearcase ratio
  • 2.33:1
Dry weight *Lightest model available
  • 260 lbs / 118 kg
CARB star rating
  • 3
Bore and stroke
  • 2.56 x 2.95" / 65 x 75 mm
Ignition
  • ECM 07 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 Trim
Exhaust system
  • Through prop
Shallow water trim range (degrees)
  • 20
Remote fuel tank (optional)
  • Yes
Color
  • Phantom Black
Lubrication system
  • Wet sump

50hp EFI

HP / kW
  • 50 / 37
Engine type
  • Inline 4
Displacement (CID/CC)
  • 60.8 / 995
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
  • SmartCraft Engine Guardian
Compatible with SmartCraft digital technology
  • Yes
Starting
  • Electric (turn-key)
Steering
  • Big Tiller Compatible
  • Remote
  • Tiller Kit
Shaft length
  • 20" / 508 mm
Gearcase ratio
  • 1.83:1
Dry weight *Lightest model available
  • 247 lbs / 112 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
  • Power Trim
Exhaust system
  • Through prop
Shallow water trim range (degrees)
  • 20
Remote fuel tank (optional)
  • Yes
Color
  • Phantom Black
Lubrication system
  • Wet sump

40hp EFI Command Thrust

HP / kW
  • 40 / 30
Engine type
  • Inline 4
Displacement (CID/CC)
  • 60.8 / 995
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
  • SmartCraft Engine Guardian
Compatible with SmartCraft digital technology
  • Yes
Starting
  • Electric (turn-key)
Steering
  • Big Tiller Compatible
  • Remote
  • Tiller Kit
Shaft length
  • 20" / 508 mm
Gearcase ratio
  • 2.33:1
Dry weight *Lightest model available
  • 260 lbs / 118 kg
CARB star rating
  • 3
Bore and stroke
  • 2.56 x 2.95" / 65 x 75 mm
Ignition
  • ECM 07 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 Trim
Exhaust system
  • Through prop
Shallow water trim range (degrees)
  • 20
Remote fuel tank (optional)
  • Yes
Color
  • Phantom Black
Lubrication system
  • Wet sump

40hp 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
  • Big Tiller Compatible
  • Remote
  • Tiller Kit
Shaft length
  • 15" / 381 mm
  • 20" / 508 mm
Gearcase ratio
  • 2.00:1
Dry weight *Lightest model available
  • 216 lbs / 98 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

FourStroke 25-30 hp

FourStroke
25-30 hp

A Three-cylinder Performer

Crisp handling to keep you moving forward

  • Engine type Inline 3
  • Full throttle RPM 5250-6250
  • Steering Remote, Tiller
  • Dry weight *Lightest model available 172 lbs / 78 kg
Great acceleration / more torque.

Great acceleration / more torque.

Compact but powerful, Mercury® 15 - 30hp FourStroke outboards feature extra displacement and outstanding low-end torque that put a boat smartly on plane.

Electrical Support.

Electrical Support.

A high-output alternator keeps batteries charged and fishing electronics humming.

Dependable starts and performance.

Dependable starts and performance.

Battery-free Electronic Fuel Injection (EFI) on Mercury 25 - 30hp FourStroke models delivers consistently easy starting, crisp throttle response, increased fuel economy and outstanding overall performance.

30hp EFI

HP / kW
  • 30 / 22.4
Engine type
  • Inline 3
Displacement (CID/CC)
  • 32.1 / 526
Full throttle RPM
  • 5250-6250
Fuel induction system
  • 2 valves per cylinder, single overhead cam (SOHC)
Alternator amp / Watt
  • 15 amp / 186 watt
Recommended fuel
  • 87% octane / up to 10% ethanol
Recommended oil
  • Mercury FourStroke Oil 10W-30
Engine protection operator warning system
  • Low oil pressure
  • Over-rev
  • Overheat
  • Sensor failure
Starting
  • Electric (turn-key)
  • Manual
Steering
  • Remote
  • Tiller
Shaft length
  • 15" / 381 mm
  • 20" / 508 mm
Gearcase ratio
  • 1.92:1
Dry weight *Lightest model available
  • 172 lbs / 78 kg
CARB star rating
  • 3
Bore and stroke
  • 2.40 x 2.36" / 61 x 60 mm
Ignition
  • CDI w/electronic spark advance
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 Trim
Exhaust system
  • Through prop
Shallow water trim range (degrees)
  • 16
Remote fuel tank standard (gal / L)
  • 6.6 / 25
Color
  • Phantom Black

25hp EFI

HP / kW
  • 25 / 18.6
Engine type
  • Inline 3
Displacement (CID/CC)
  • 32.1 / 526
Full throttle RPM
  • 5000-6000
Fuel induction system
  • 2 valves per cylinder, single overhead cam (SOHC)
Alternator amp / Watt
  • 15 amp / 186 watt
Recommended fuel
  • 87% octane / up to 10% ethanol
Recommended oil
  • Mercury FourStroke Oil 10W-30
Engine protection operator warning system
  • Low oil pressure
  • Over-rev
  • Overheat
  • Sensor failure
Starting
  • Electric (turn-key)
  • Manual
Steering
  • Remote
  • Tiller
Shaft length
  • 15" / 381 mm
  • 20" / 508 mm
Gearcase ratio
  • 1.92:1
Dry weight *Lightest model available
  • 157 lbs / 71 kg
CARB star rating
  • 3
Bore and stroke
  • 2.40 x 2.36" / 61 x 60 mm
Ignition
  • CDI w/electronic spark advance
Fuel system
  • Electronic Fuel Injection (EFI)
Cooling system
  • Water-cooled with thermostat
Gear shift
  • F-N-R
Gearcase options
  • Standard
Trim system
  • Manual
  • Power Trim
Exhaust system
  • Through prop
Shallow water trim range (degrees)
  • 16
Remote fuel tank standard (gal / L)
  • 6.6 / 25
Color
  • Phantom Black

Online Help Desk. 24/7

  

FourStroke 15-20 hp

FourStroke
15-20 hp

All-in-one Performance

Intuitive maneuvering for precise control.

  • Engine type Inline 2
  • Full throttle RPM 5400-6100
  • Steering Remote, Tiller
  • Dry weight *Lightest model available 115 lbs / 52 kg
Electrical support.

Electrical support.

A high-output alternator keeps batteries charged and fishing electronics humming.

Start Easily, Idle Smoothly.

Start Easily, Idle Smoothly.

Mercury 8hp to 20hp FourStroke outboards have features that make starting easier, warm-ups faster and idling smoother!

  • The fuel filter on 8hp to 20hp Mercury FourStrokes has been moved to keep the carburetor cleaner
  • Tiller handle models have a richer air/fuel mix at idle
  • They also come standard with a three-position choke, eliminating the need for a primer button

Great acceleration / more torque.

Great acceleration / more torque.

Compact but powerful, Mercury® 15 - 30hp FourStroke outboards feature extra displacement and outstanding low-end torque that put a boat smartly on plane.

More Thrust.

More Thrust.

Mercury® ProKicker outboards feature a deeper gearcase and a four-blade, high-thrust propeller with matching gear ratio – the perfect setup for trolling and precise control in all conditions. The ProKicker gearcase is engineered to be rugged and durable, with robust gears and bearings and a heavy-duty skeg that’s 55% thicker and twice as strong side-to-side as the previous gearcase.

Power Tilt.

Power Tilt.

The fastest power tilt in the industry drops a Mercury 9.9 - 15hp ProKicker FourStroke outboard into the water in just five seconds. Exclusive kicker-centering straps align and secure the outboard in full tilt-up position while you’re underway.

Power in the Palm of Your Hand.

Power in the Palm of Your Hand.

Tiller models feature the exclusive Mercury multifunction tiller that puts

  • shifting
  • throttle control (with improved slow-speed throttle advance for optimal trolling)
  • stopping
  • tilting
  • steering

in the palm of your hand.

20hp

HP / kW
  • 20 / 14.7
Engine type
  • Inline 2
Displacement (CID/CC)
  • 21.4 / 351
Full throttle RPM
  • 5400-6100
Fuel induction system
  • 2 valves per cylinder, single overhead cam (SOHC)
Alternator amp / Watt
  • 12 amp / 138 watt
Recommended fuel
  • 87% octane / up to 10% ethanol
Recommended oil
  • Mercury FourStroke Oil 10W-30
Engine protection operator warning system
  • Low oil pressure
  • Over-rev
Starting
  • Electric
  • Manual
Steering
  • Remote
  • Tiller
Shaft length
  • 15" / 381 mm
  • 20" / 508 mm
Gearcase ratio
  • 2.15:1
Dry weight *Lightest model available
  • 115 lbs / 52 kg
CARB star rating
  • 3
Bore and stroke
  • 2.40 x 2.36" / 61 x 60 mm
Ignition
  • CDI w/electronic spark advance
Fuel system
  • Carbureted
Cooling system
  • Water-cooled with thermostat
Gear shift
  • F-N-R
Gearcase options
  • Standard
Trim system
  • Power Tilt
Trim positions
  • 6
Exhaust system
  • Through prop
Shallow water drive
  • Yes
Shallow water trim range (degrees)
  • 16
Remote fuel tank standard (gal / L)
  • 6.6 / 25
Color
  • Phantom Black

15hp

HP / kW
  • 15 / 11.1
Engine type
  • Inline 2
Displacement (CID/CC)
  • 21.4 / 351
Full throttle RPM
  • 5000-6000
Fuel induction system
  • 2 valves per cylinder, single overhead cam (SOHC)
Alternator amp / Watt
  • 12 amp / 138 watt
Recommended fuel
  • 87% octane / up to 10% ethanol
Recommended oil
  • Mercury FourStroke Oil 10W-30
Engine protection operator warning system
  • Low oil pressure
  • Over-rev
Starting
  • Electric
  • Manual
Steering
  • Remote
  • Tiller
Shaft length
  • 15" / 381 mm
  • 20" / 508 mm
Gearcase ratio
  • 2.15:1
Dry weight *Lightest model available
  • 115 lbs / 52 kg
CARB star rating
  • 3
Bore and stroke
  • 2.40 x 2.36" / 61 x 60 mm
Ignition
  • CDI w/electronic spark advance
Fuel system
  • Carbureted
Cooling system
  • Water-cooled with thermostat
Gear shift
  • F-N-R
Gearcase options
  • Standard
Trim system
  • Power Tilt
Trim positions
  • 6
Exhaust system
  • Through prop
Shallow water drive
  • Yes
Shallow water trim range (degrees)
  • 16
Remote fuel tank standard (gal / L)
  • 6.6 / 25
Color
  • Phantom Black

15hp ProKicker

HP / kW
  • 15 / 11.1
Engine type
  • Inline 2
Displacement (CID/CC)
  • 21.4 / 351
Full throttle RPM
  • 5000-6000
Fuel induction system
  • 2 valves per cylinder, single overhead cam (SOHC)
Alternator amp / Watt
  • 12 amp / 138 watt
Recommended fuel
  • 87% octane / up to 10% ethanol
Recommended oil
  • Mercury FourStroke Oil 10W-30
Engine protection operator warning system
  • Low oil pressure
  • Over-rev
Starting
  • Electric
  • Manual
Steering
  • Remote
  • Tiller
Shaft length
  • 20" / 508 mm
Gearcase ratio
  • 2.15:1
Dry weight *Lightest model available
  • 135 lbs / 61 kg
CARB star rating
  • 3
Bore and stroke
  • 2.40 x 2.36" / 61 x 60 mm
Ignition
  • CDI w/electronic spark advance
Fuel system
  • Carbureted
Cooling system
  • Water-cooled with thermostat
Gear shift
  • F-N-R
Gearcase options
  • Standard
Trim system
  • Power Tilt
Trim positions
  • 6
Exhaust system
  • Through prop
Shallow water drive
  • Yes
Shallow water trim range (degrees)
  • 16
Remote fuel tank standard (gal / L)
  • 6.6 / 25
Color
  • Phantom Black

FourStroke 8-9.9 hp

FourStroke
8-9.9 hp

Start Easy

Incredibly responsive to get you going with little or no prep.

  • Engine type Inline 2
  • Full throttle RPM 5000-6000
  • Steering Remote, Tiller
  • Dry weight *Lightest model available 84 lbs / 38 kg
More Thrust.

More Thrust.

Mercury® ProKicker outboards feature a deeper gearcase and a four-blade, high-thrust propeller with matching gear ratio – the perfect setup for trolling and precise control in all conditions. The ProKicker gearcase is engineered to be rugged and durable, with robust gears and bearings and a heavy-duty skeg that’s 55% thicker and twice as strong side-to-side as the previous gearcase.

Enhanced Features.

Enhanced Features.

The Mercury 8 and 9.9hp FourStroke outboards include:

  • New three-position choke and no primer button improve starting, simplify the starting procedure and allow the engine to warm up faster
  • A richer idle air / fuel mix makes the engine easier to start and provides better idle running quality (tiller handle models)
  • A change to the ignition timing allows fishermen to find and hold optimal troll speed

Power Tilt.

Power Tilt.

The fastest power tilt in the industry drops a Mercury 9.9 - 15hp ProKicker FourStroke outboard into the water in just five seconds. Exclusive kicker-centering straps align and secure the outboard in full tilt-up position while you’re underway.

Command Thrust

Command Thrust

Big-time power. With a longer design and bigger components, Mercury Command Thrust was made specifically to deliver the type of power, thrust and control that wider, heavier boats demand.

The Command Thrust Difference (Blue shaded areas represent prop and gearcase advantages)

  • 20% larger prop increases control especially at low speeds.
  • Taller gearcase puts the prop deeper, below turbulent water, for improved performance.
  • A low 2.42:1 gear ratio delivers thrust and maneuveraility that big loads demand.
  • Oversized Antiventilation Plate. Oversized design prevents air from being drawn into the prop, which increases efficiency.

Power in the Palm of Your Hand.

Power in the Palm of Your Hand.

Tiller models feature the exclusive Mercury multifunction tiller that puts

  • shifting
  • throttle control (with improved slow-speed throttle advance for optimal trolling)
  • stopping
  • tilting
  • steering

in the palm of your hand.

Lightweight.

Lightweight.

At only 83 pounds, these engines are very portable and improve the performance of lightweight boats.

Convenient and Easy Tilting.

Convenient and Easy Tilting.

Push down on the tiller handle to easily tilt the outboard to any position, made easy with our exclusive ratcheting transom bracket.

Start Easily, Idle Smoothly.

Start Easily, Idle Smoothly.

Mercury 8hp to 20hp FourStroke outboards have features that make starting easier, warm-ups faster and idling smoother!

  • The fuel filter on 8hp to 20hp Mercury FourStrokes has been moved to keep the carburetor cleaner
  • Tiller handle models have a richer air/fuel mix at idle
  • They also come standard with a three-position choke, eliminating the need for a primer button

9.9hp

HP / kW
  • 9.9 / 7.3
Engine type
  • Inline 2
Displacement (CID/CC)
  • 12.8 / 208
Full throttle RPM
  • 5000-6000
Fuel induction system
  • 2 valves per cylinder, single overhead cam (SOHC)
Alternator amp / Watt
  • 6 amp / 76 watt
Recommended fuel
  • 87% octane / up to 10% ethanol
Recommended oil
  • Mercury FourStroke Oil 10W-30
Engine protection operator warning system
  • Low oil pressure
  • Over-rev
Starting
  • Electric
  • Manual
Steering
  • Remote
  • Tiller
Shaft length
  • 15" / 381 mm
  • 20" / 508 mm
Gearcase ratio
  • 2.08:1
Dry weight *Lightest model available
  • 84 lbs / 38 kg
CARB star rating
  • 3
Bore and stroke
  • 2.16 x 1.73" / 55 x 44 mm
Ignition
  • CDI w/electronic spark advance
Fuel system
  • Carbureted
Cooling system
  • Water-cooled with thermostat
Gear shift
  • F-N-R
Gearcase options
  • Standard
Trim positions
  • Ratcheting
Exhaust system
  • Through prop
Shallow water drive
  • Yes
Shallow water trim range (degrees)
  • 16
Remote fuel tank standard (gal / L)
  • 3.2 / 12
Color
  • Phantom Black

9.9hp ProKicker

HP / kW
  • 9.9 / 7.3
Engine type
  • Inline 2
Displacement (CID/CC)
  • 12.8 / 208
Full throttle RPM
  • 5000-6000
Fuel induction system
  • 2 valves per cylinder, single overhead cam (SOHC)
Alternator amp / Watt
  • 6 amp / 76 watt
Recommended fuel
  • 87% octane / up to 10% ethanol
Recommended oil
  • Mercury FourStroke Oil 10W-30
Engine protection operator warning system
  • Low oil pressure
  • Over-rev
Starting
  • Electric
  • Manual
Steering
  • Remote
  • Tiller
Shaft length
  • 20" / 508 mm
  • 25" / 635 mm
Gearcase ratio
  • 2.42:1
Dry weight *Lightest model available
  • 108 lbs / 49 kg
CARB star rating
  • 3
Bore and stroke
  • 2.16 x 1.73" / 55 x 44 mm
Ignition
  • CDI w/electronic spark advance
Fuel system
  • Carbureted
Cooling system
  • Water-cooled with thermostat
Gear shift
  • F-N-R
Gearcase options
  • Standard
Trim system
  • Power Tilt
Trim positions
  • Ratcheting
Exhaust system
  • Through prop
Shallow water drive
  • Yes
Shallow water trim range (degrees)
  • 16
Remote fuel tank standard (gal / L)
  • 3.2 / 12
Color
  • Phantom Black

9.9hp Command Thrust

HP / kW
  • 9.9 / 7.3
Engine type
  • Inline 2
Displacement (CID/CC)
  • 12.8 / 208
Full throttle RPM
  • 5000-6000
Fuel induction system
  • 2 valves per cylinder, single overhead cam (SOHC)
Alternator amp / Watt
  • 6 amp / 76 watt
Recommended fuel
  • 87% octane / up to 10% ethanol
Recommended oil
  • Mercury FourStroke Oil 10W-30
Engine protection operator warning system
  • Low oil pressure
  • Over-rev
Starting
  • Electric
  • Manual
Steering
  • Remote
  • Tiller
Shaft length
  • 20" / 508 mm
  • 25" / 635 mm
Gearcase ratio
  • 2.42:1
Dry weight *Lightest model available
  • 96 lbs / 44 kg
CARB star rating
  • 3
Bore and stroke
  • 2.16 x 1.73" / 55 x 44 mm
Ignition
  • CDI w/electronic spark advance
Fuel system
  • Carbureted
Cooling system
  • Water-cooled with thermostat
Gear shift
  • F-N-R
Gearcase options
  • BigFoot
Trim system
  • Power Tilt
Trim positions
  • Ratcheting
Exhaust system
  • Through prop
Shallow water drive
  • Yes
Shallow water trim range (degrees)
  • 16
Remote fuel tank standard (gal / L)
  • 3.2 / 12
Color
  • Phantom Black

8hp

HP / kW
  • 8 / 5.9
Engine type
  • Inline 2
Displacement (CID/CC)
  • 12.8 / 208
Full throttle RPM
  • 5000-6000
Fuel induction system
  • 2 valves per cylinder, single overhead cam (SOHC)
Alternator amp / Watt
  • 6 amp / 76 watt
Recommended fuel
  • 87% octane / up to 10% ethanol
Recommended oil
  • Mercury FourStroke Oil 10W-30
Engine protection operator warning system
  • Low oil pressure
  • Over-rev
Starting
  • Electric
  • Manual
Steering
  • Tiller
Shaft length
  • 15" / 381 mm
  • 20" / 508 mm
Gearcase ratio
  • 2.08:1
Dry weight *Lightest model available
  • 84 lbs / 38 kg
CARB star rating
  • 3
Bore and stroke
  • 2.16 x 1.73" / 55 x 44 mm
Ignition
  • CDI w/electronic spark advance
Fuel system
  • Carbureted
Cooling system
  • Water-cooled with thermostat
Gear shift
  • F-N-R
Gearcase options
  • Standard
Trim positions
  • Ratcheting
Exhaust system
  • Through prop
Shallow water drive
  • Yes
Shallow water trim range (degrees)
  • 16
Remote fuel tank standard (gal / L)
  • 3.2 / 12
Color
  • Phantom Black

FourStroke 4-6 hp

FourStroke
4-6 hp

Power Tender and Skiffs. Effortlessly.

57 pounds of agile performance.

  • Engine type 1 cylinder
  • Full throttle RPM 5000-6000
  • Steering Tiller
  • Dry weight *Lightest model available 57 lbs / 26 kg
Lightweight.

Lightweight.

Weighing just 38 and 57 pounds, respectively, our 2.5 - 3.5hp and 4 - 6hp FourStroke outboards are easy to lift and carry.

Generate Power.

Generate Power.

Convenience and performance you can count on. 4 amp alternator to charge a battery: exhaust relief holes and 6" prop for improved handling when reversing heavy boats; even an added rectifier to power small external lights. A 5hp FourStroke that powers your boat.

Shallow Water.

Shallow Water.

Multiple trim positions enhance performance and enable shallow-water operation.

Easy to Start.

Easy to Start.

Automatic decompression bleeds off cylinder pressure to reduce the pulling force required to start the engine.

Quiet.

Quiet.

Through-prop exhaust on all Mercury® 4 - 6hp FourStrokes exits underwater for quiet operation.

Fueling Options.

Fueling Options.

Mercury® 4, 5 and 6hp FourStrokes feature integral fuel tanks with an external fuel-shutoff valve, as well as a fuel-tank cap on top of the cowl. For extended range, these engines also can be connected to a remote fuel tank placed in the boat.

6hp

HP / kW
  • 6 / 4.4
Engine type
  • 1 cylinder
Displacement (CID/CC)
  • 7.5 / 123
Full throttle RPM
  • 5000-6000
Fuel induction system
  • 2-valve pushrod (overhead valve)
Recommended fuel
  • 87% octane / up to 10% ethanol
Recommended oil
  • Mercury FourStroke Oil 10W-30
Engine protection operator warning system
  • Low oil pressure
  • Over-rev
Starting
  • Manual
Steering
  • Tiller
Shaft length
  • 15" / 381 mm
  • 20" / 508 mm
Gearcase ratio
  • 2.15:1
Dry weight *Lightest model available
  • 57 lbs / 26 kg
CARB star rating
  • 3
Bore and stroke
  • 2.32 x 1.77" / 59 x 45 mm
Ignition
  • CDI w/electronic spark advance
Fuel system
  • Carbureted
Cooling system
  • Water-cooled with thermostat
Gear shift
  • F-N-R
Gearcase options
  • Standard
Trim positions
  • 6
Exhaust system
  • Through prop
Shallow water drive
  • Yes
Shallow water trim range (degrees)
  • 16
Integrated fuel tank (gal / L)
  • 0.3 / 1.1
Optional fuel tank (gal / L)
  • 3.2 / 12
Color
  • Phantom Black

5hp

HP / kW
  • 5 / 3.7
Engine type
  • 1 cylinder
Displacement (CID/CC)
  • 7.5 / 123
Full throttle RPM
  • 4500-5500
Fuel induction system
  • 2-valve pushrod (overhead valve)
Recommended fuel
  • 87% octane / up to 10% ethanol
Recommended oil
  • Mercury FourStroke Oil 10W-30
Engine protection operator warning system
  • Low oil pressure
  • Over-rev
Starting
  • Manual
Steering
  • Tiller
Shaft length
  • 15" / 381 mm
  • 25" / 635 mm
Gearcase ratio
  • 2.15:1
Dry weight *Lightest model available
  • 57 lbs / 26 kg
CARB star rating
  • 3
Bore and stroke
  • 2.32 x 1.77" / 59 x 45 mm
Ignition
  • CDI w/electronic spark advance
Fuel system
  • Carbureted
Cooling system
  • Water-cooled with thermostat
Gear shift
  • F-N-R
Gearcase options
  • Standard
Trim positions
  • 6
Exhaust system
  • Through prop
Shallow water drive
  • Yes
Shallow water trim range (degrees)
  • 16
Integrated fuel tank (gal / L)
  • 0.3 / 1.1
Optional fuel tank (gal / L)
  • 3.2 / 12
Color
  • Phantom Black

5hp SailPower

HP / kW
  • 5 / 3.7
Engine type
  • 1 cylinder
Displacement (CID/CC)
  • 7.5 / 123
Full throttle RPM
  • 4500-5500
Fuel induction system
  • 2-valve pushrod (overhead valve)
Alternator amp / Watt
  • 4 amp / 50 watt lighting and charging
Recommended fuel
  • 87% octane / up to 10% ethanol
Recommended oil
  • Mercury FourStroke Oil 10W-30
Engine protection operator warning system
  • Low oil pressure
  • Over-rev
Starting
  • Manual
Steering
  • Tiller
Shaft length
  • 20" / 508 mm
Gearcase ratio
  • 2.15:1
Dry weight *Lightest model available
  • 59 lbs / 27 kg
CARB star rating
  • 3
Bore and stroke
  • 2.32 x 1.77" / 59 x 45 mm
Ignition
  • CDI w/electronic spark advance
Fuel system
  • Carbureted
Cooling system
  • Water-cooled with thermostat
Gear shift
  • F-N-R
Gearcase options
  • Standard
Trim positions
  • 6
Exhaust system
  • Through prop
Shallow water drive
  • Yes
Shallow water trim range (degrees)
  • 16
Integrated fuel tank (gal / L)
  • 0.3 / 1.1
Optional fuel tank (gal / L)
  • 3.2 / 12
Color
  • Phantom Black

4hp

HP / kW
  • 4 / 2.9
Engine type
  • 1 cylinder
Displacement (CID/CC)
  • 7.5 / 123
Full throttle RPM
  • 4500-5500
Fuel induction system
  • 2-valve pushrod (overhead valve)
Recommended fuel
  • 87% octane / up to 10% ethanol
Recommended oil
  • Mercury FourStroke Oil 10W-30
Engine protection operator warning system
  • Low oil pressure
  • Over-rev
Starting
  • Manual
Steering
  • Tiller
Shaft length
  • 15" / 381 mm
  • 20" / 508 mm
Gearcase ratio
  • 2.15:1
Dry weight *Lightest model available
  • 57 lbs / 26 kg
CARB star rating
  • 3
Bore and stroke
  • 2.32 x 1.77" / 59 x 45 mm
Ignition
  • CDI w/electronic spark advance
Fuel system
  • Carbureted
Cooling system
  • Water-cooled with thermostat
Gear shift
  • F-N-R
Gearcase options
  • Standard
Trim positions
  • 6
Exhaust system
  • Through prop
Shallow water drive
  • Yes
Shallow water trim range (degrees)
  • 16
Integrated fuel tank (gal / L)
  • 0.3 / 1.1
Optional fuel tank (gal / L)
  • 3.2 / 12
Color
  • Phantom Black

FourStroke 2.5-3.5 hp

FourStroke
2.5-3.5 hp

Handheld Reliability

Portable power and thrust for exact operation.

  • Engine type 1 cylinder
  • Full throttle RPM 5000-6000
  • Steering Tiller with 360° turning
  • Dry weight *Lightest model available 38 lbs / 17 kg
Lightweight.

Lightweight.

Weighing just 38 and 57 pounds, respectively, our 2.5 - 3.5hp and 4 - 6hp FourStroke outboards are easy to lift and carry.

Shallow Water.

Shallow Water.

Multiple trim positions enhance performance and enable shallow-water operation.

Easy to Start.

Easy to Start.

Automatic decompression bleeds off cylinder pressure to reduce the pulling force required to start the engine.

Precise Control.

Precise Control.

Mercury 2.5 and 3.5hp FourStroke engines feature neutral-forward shifting with 360-degree steering for full thrust in all directions.

3.5hp

HP / kW
  • 3.5 / 2.6
Engine type
  • 1 cylinder
Displacement (CID/CC)
  • 5.2 / 85
Full throttle RPM
  • 5000-6000
Fuel induction system
  • 2-valve pushrod (overhead valve)
Recommended fuel
  • 87% octane / up to 10% ethanol
Recommended oil
  • Mercury FourStroke Oil 10W-30
Engine protection operator warning system
  • Over-rev
Starting
  • Manual
Steering
  • Tiller with 360° turning
Shaft length
  • 15" / 381 mm
  • 20" / 508 mm
Gearcase ratio
  • 2.15:1
Dry weight *Lightest model available
  • 38 lbs / 17 kg
CARB star rating
  • 3
Bore and stroke
  • 2.16 x 1.42" / 55 x 36 mm
Ignition
  • CDI w/electronic spark advance
Fuel system
  • Carbureted
Cooling system
  • Water-cooled with thermostat
Gear shift
  • F-N
Gearcase options
  • Standard
Trim system
  • 4 position
Trim positions
  • 4
Exhaust system
  • Above prop
Shallow water trim range (degrees)
  • 16
Integrated fuel tank (gal / L)
  • 0.3 / 1.1
Color
  • Phantom Black

2.5hp

HP / kW
  • 2.5 / 1.9
Engine type
  • 1 cylinder
Displacement (CID/CC)
  • 5.2 / 85
Full throttle RPM
  • 4500-5500
Fuel induction system
  • 2-valve pushrod (overhead valve)
Recommended fuel
  • 87 octane compatible (up to 10% ethanol)
Recommended oil
  • Mercury FourStroke Oil 10W-30
Engine protection operator warning system
  • Over-rev
Starting
  • Manual
Steering
  • Tiller with 360° turning
Shaft length
  • 15" / 381 mm
Gearcase ratio
  • 2.15:1
Dry weight *Lightest model available
  • 38 lbs / 17 kg
CARB star rating
  • 3
Bore and stroke
  • 2.16 x 1.42" / 55 x 36 mm
Ignition
  • CDI w/electronic spark advance
Fuel system
  • Carbureted
Cooling system
  • Water-cooled with thermostat
Gear shift
  • F-N
Gearcase options
  • Standard
Trim system
  • 4 position
Trim positions
  • 4
Exhaust system
  • Above prop
Shallow water trim range (degrees)
  • 16
Integrated fuel tank (gal / L)
  • 0.3 / 1.1
Color
  • Phantom Black