Outboards

Taking the fun with you is a great advantage of inflatable boats and small fishing boats. Mercury offers a complete line of portable FourStroke outboards that are extremely light, with the widest range of models to choose from. The entire line makes operation and portability easy with smart, simple features. Plus clean, quiet, fuel-efficient FourStroke performance makes them the obvious power of choice.

We typically keep engines from 2.5 to 30hp in stock year-round, Four-stroke outboards from 40hp to 400hp and Two-stroke Optimax engines are available upon request. Detailed model information on Mercurys full line of engines can be found at the Mercury consumer site

2.5 HP

2.5 Four Stroke Specifications

  • Patented one-piece integrated cylinder block design provides added reliability by eliminating gaskets and fasteners and makes the powerhead much more compact and lightweight.
  • Check oil level without removing the cowling with convenient, easy-to-view sight gauge.
  • This engine delivers maximum performance with the largest displacement in the 2.5 hp category.
  • A twist-grip throttle and 360-degree steering make it easy to use.

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HP @ Prop 2.5
kW @ Prop 1.84
Max RPM (WOT) 5000-6000
Cylinder/Configuration 1
Displacement (CID/cc) 5.2/85
Bore & Stroke (in/mm) 2.16″ x 1.42″ / 55 x 36 mm
Cooling System Water-cooled w/thermostat
Ignition System CDI w/electric spark advance
Starting Manual
Gear Ratio 2.15:1
Gear Shift F-N
Steering Tiller with 360° turning
Trim Positions 4
Exhaust System Above prop
Lubrication System Splash
Recommended Oil Mercury 4-Stroke Outboard Oil 10w30
Oil Capacity 300 mL / 10 oz
Fuel Induction System 2-valve single overhead cam
Integral Fuel Tank 1.1 L / 0.3 Gal
Shaft Length (inches/mm) 15″ / 381mm
Dry Weight 38lbs / 17kg
Available Propellers Standard equipment
Warranty 3 years included, up to 7 total
CARB Star Rating 3

 

3.5 HP

3.5 Four Stroke Specifications

  • Patented one-piece integrated cylinder block design provides added reliability by eliminating gaskets and fasteners and makes the powerhead much more compact and lightweight.
  • Check oil level without removing the cowling with convenient, easy-to-view sight gauge.
  • This engine delivers maximum performance with the largest displacement in the 2.5 hp category.
  • A twist-grip throttle and 360-degree steering make it easy to use.

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HP @ Prop 3.5
kW @ Prop 2.64
Max RPM (WOT) 5000-6000
Cylinder/Configuration 1
Displacement (CID/cc) 5.2/85
Bore & Stroke (in/mm) 2.16″ x 1.42″ / 55 x 36 mm
Cooling System Water-cooled w/thermostat
Ignition System CDI w/electric spark advance
Starting Manual
Gear Ratio 2.15:1
Gear Shift F-N
Steering Tiller with 360° turning
Trim Positions 4
Exhaust System Above prop
Lubrication System Splash
Recommended Oil Mercury 4-Stroke Outboard Oil 10w30
Oil Capacity 300 mL / 10 oz
Fuel Induction System 2-valve single overhead cam
Integral Fuel Tank 1.1L / 0.3 Gal
Shaft Length (inches/mm) 15″/20″     381/508mm
Dry Weight 38lbs / 17kg
Available Propellers Standard equipment
Warranty 3 years included, up to 7 total
CARB Star Rating 3

 

4 HP

4 Four Stroke Specifications

  • A standard automatic cylinder decompression system greatly reduces starting pull force for effortless starting.
  • The 4 hp model delivers ultimate portability with its integrated fuel tank and shut-off valve to prevent fuel spillage.
  • Remote fuel tank hookup at front of engine
  • A full forward-neutral-reverse front-mount shift is standard.

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HP @ Prop 4
kW @ Prop 2.94
Max RPM (WOT) 4500-5500
Cylinder/Configuration 1
Displacement (CID/cc) 7.5/123
Bore & Stroke (in/mm) 2.32″ x 1.77″ / 59 x 45mm
Cooling System Water-cooled w/thermostat
Ignition System CDI w/electric spark advance
Starting Manual
Gear Ratio 2.15:1
Gear Shift F-N-R
Steering Tiller
Alternator Amp Optional 4-amp lighting/2-amp charging
Alternator Watt Optional 50-watt lighting/25-watt charging
Trim Positions 6
Shallow Water Drive Standard
Exhaust System Through prop
Lubrication System Pressurized wet sump
Recommended Oil Mercury 4-Stroke Outboard Oil 10w30
Oil Capacity 450 mL / 15 oz
Fuel Induction System 2-valve pushrod
Integral Fuel Tank 1.1L / 0.3 Gal.  Standard
Remote Fuel Tank 12L / 3.2 Gal.  Optional
Shaft Length (inches/mm) 15″/20″    381/508mm
Dry Weight 57lbs / 26kg
Operator Warning System Low oil pressure     Over-rev
Overrev Protection Standard
Available Propellers Consult current dealer propeller guide
Warranty 3 years included, up to 7 total
Corrosion Warranty 3 years

 

5 HP

5 Four Stroke Specifications

  • A standard automatic cylinder decompression system greatly reduces starting pull force for effortless starting.
  • The 5 hp model delivers ultimate portability with its integrated fuel tank and shut-off valve to prevent fuel spillage.
  • Remote fuel tank hookup at front of engine
  • A full forward-neutral-reverse front-mount shift is standard.

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HP @ Prop 5
kW @ Prop 3.68
Max RPM (WOT) 4500-5500
Cylinder/Configuration 1
Displacement (CID/cc) 7.5/123
Bore & Stroke (in/mm) 2.32″ x 1.77″ / 59 x 45mm
Cooling System Water-cooled w/thermostat
Ignition System CDI w/electric spark advance
Starting Manual
Gear Ratio 2.15:1
Gear Shift F-N-R
Steering Tiller
Alternator Amp Optional 4-amp lighting/2-amp charging
Alternator Watt Optional 50-watt lighting/25-watt charging
Trim Positions 6
Shallow Water Drive Standard
Exhaust System Through prop
Lubrication System Pressurized wet sump
Recommended Oil Mercury 4-Stroke Outboard Oil 10w30
Oil Capacity 450 mL / 15 oz
Fuel Induction System 2-valve pushrod
Internal Fuel Tank 1.1L / 0.3 Gal Standard
Remote Fuel Tank 12L / 3.2 Gal. Optional
Shaft Length (inches/mm) 15″/20″/25″       381/508/635mm
Dry Weight 57lbs / 26kg
Operator Warning System Low oil pressure  Over-rev
Overrev Protection Standard
Available Propellers Consult current dealer propeller guide
Warranty 3 years included, up to 7 total
Corrosion Warranty 3 years

 

6 HP

6 Four Stroke Specifications

  • A standard automatic cylinder decompression system greatly reduces starting pull force for effortless starting.
  • The 6 hp model delivers ultimate portability with its integrated fuel tank and shut-off valve to prevent fuel spillage.
  • Remote fuel tank hookup at front of engine
  • A full forward-neutral-reverse front-mount shift is standard.

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HP @ Prop 6
kW @ Prop 4.41
Max RPM (WOT) 5000-6000
Cylinder/Configuration 1
Displacement (CID/cc) 7.5/123
Bore & Stroke (in/mm) 2.32″ x 1.77″ / 59 x 45mm
Cooling System Water-cooled w/thermostat
Ignition System CDI w/electric spark advance
Starting Manual
Gear Ratio 2.15:1
Gear Shift F-N-R
Steering Tiller
Alternator Amp Optional 4-amp lighting/2-amp charging
Alternator Watt Optional 50-watt lighting/25-watt charging
Trim Positions 6
Shallow Water Drive Standard
Exhaust System Through prop
Lubrication System Wet sump
Recommended Oil Mercury 4-Stroke Outboard Oil 10w30
Oil Capacity 450 mL / 15 oz
Fuel Induction System 2-valve pushrod
Internal Fuel Tank 1.1L / 0.3 Gal Standard
Remote Fuel Tank 12L / 3.2 Gal. Optional
Shaft Length (inches/mm) 15″/20″   381/508mm
Dry Weight 57lbs / 26kg
Operator Warning System Low oil pressure     Over-rev
Available Propellers Consult current dealer propeller guide
CARB Star Rating 3
Warranty 3 years included, up to 7 total

 

8 HP

8 Four Stroke Specifications

  • The multifunction tiller handle design provides one-hand operation of shifting, stopping, throttle control, tilting and steering.
  • A standard manual recoil starter, even on electric start models, provides added safety in the event of a drained battery.
  • Easy starting and fast idle warm-up are provided by manual choke and primer.
  • Only 7 pounds heavier than a comparable two-stroke, it’s one of the lightest fourstrokes in its class.

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HP @ Prop 8
kW @ Prop 5.88
Max RPM (WOT) 5000-6000
Cylinders 2 (inline)
Displacement (CID/cc) 12.8/209
Bore & Stroke (in/mm) 2.16″ x 1.73″ / 55 x 44mm
Cooling System Thermostatic control
Ignition System CDI w/electric spark advance
Starting Manual or electric
Gear Ratio 2.08:1
Gear Shift F-N-R
Steering Tiller
Alternator 6 amp / 76 watt available
Trim Positions 5
Shallow Water Drive Standard
Exhaust System Through prop
Lubrication System Wet sump pressurized
Recommended Oil Mercury 4-Stroke Outboard Oil 10w30
Oil Capacity 800 mL / 27 oz
Fuel Induction System 2-valve single overhead cam
Remote Fuel Tank Standard – 12L / 3.2 Gal
Shaft Length (inches/mm) 15″/20″    381/508mm
Dry Weight 84lbs / 38kg
Operator Warning System Low oil pressure   Over-rev
Available Propellers Standard equipment
CARB Star Rating 3
Warranty 3 years included, up to 7 total

 

9.9 HP

9.9 Four Stroke Specifications

  • The multifunction tiller handle design provides one-hand operation of shifting, stopping, throttle control, tilting and steering.
  • A standard manual recoil starter, even on electric start models, provides added safety in the event of a drained battery.
  • Easy starting and fast idle warm-up are provided by manual choke and primer.
  • Only 7 pounds heavier than a comparable two-stroke, it’s one of the lightest fourstrokes in its class.

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HP @ Prop 9.9
kW @ Prop 7.28
Max RPM (WOT) 5000-6000
Cylinders 2 (inline)
Displacement (CID/cc) 12.8/209
Bore & Stroke (in/mm) 2.16″ x 1.73″ / 55 x 44mm
Cooling System Thermostatic control
Ignition System CDI w/ electric spark advance
Starting Manual or electric
Gear Ratio 2.08:1
Gear Shift F-N-R
Steering Remote or tiller
Alternator 6 amp / 76 watt available
Trim Positions 5
Shallow Water Drive Standard
Exhaust System Through prop
Lubrication System Wet sump pressurized
Recommended Oil Mercury 4-Stroke Outboard Oil 10w30
Oil Capacity 800 mL / 27 oz
Fuel Induction System 2-valve single overhead cam
Remote Fuel Tank Standard – 12L / 3.2 Gal
Shaft Length (inches/mm) 15″/20″/25″    381/508/635mm
Dry Weight 84lbs / 38kg
Operator Warning System Low oil pressure   Over-rev
Available Propellers Standard equipment
CARB Star Rating 3
Warranty 3 years included, up to 7 total

 

15 HP

15 Four Stroke Specifications

  • Overhead cam design provides smooth, quiet and efficient operation
  • Accelerator pump ensures responsive acceleration, no more lag
  • Multi-function tiller controls shift, steering, throttle, throttle friction, trim and stop controls
  • The through-prop exhaust submerges and minimizes exhaust noise.
  • Our over-rev protection feature limits engine rpm if maximum engine speed is exceeded.
  • Options include manual or power tilt, as well as Manual and Electric+Manual start

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HP @ Prop 15
kW @ Prop 11.1
Max RPM (WOT) 5000 – 6000
Cylinders 2 (in-line)
Displacement (CID/cc) 21.4 / 351
Bore & Stroke (in/mm) 2.40″ x 2.36″ / 60 x 61mm
Cooling System Water-cooled w/thermostat
Ignition System CDI w/ electric spark advance
Starting Manual or electric (with manual backup and auto-decompression)
Gear Ratio 2.15:1
Gear Shift F-N-R (shift-in-handle tiller or remote control)
Steering Tiller or remote
Alternator 12V – 12 Amp/138 Watt (optional on manual start models)
Trim & Tilt 6 positions (with shallow water drive) or power tilt
Shallow Water Drive Standard
Exhaust System Through prop
Lubrication System Wet sump
Recommended Oil Mercury 4-Stroke Outboard Oil 10w30
Oil Capacity 1.0 L / 1.1 Qt.
Fuel Induction System 2-valve single overhead cam
Remote Fuel Tank Standard – 25L / 6.6 Gal
Shaft Length (inches/mm) 15″/20″/25″     381/508/635mm
Dry Weight 115lbs / 52kg
Operator Warning System Low oil pressure   Over-rev
Available Propeller 9.25 x 9 Pitch standard
CARB Star Rating 3
Warranty 3 years included, up to 7 total

 

20 HP

20 Four Stroke Specifications

  • Overhead cam provides smooth, quiet and efficient operation
  • Accelerator pump ensures responsive acceleration, no more lag
  • Meets all world wide emission requirements
  • Multi-function tiller controls shift, steering, throttle, throttle friction, trim and stop controls
  • Unique engine mount system reduces vibration
  • Options include manual trim or power tilt, as well as Manual start and Electric+Manual start
  • Our over-rev protection feature limits engine rpm if maximum engine speed is exceeded.

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HP @ Prop 20
kW @ Prop 14.7
Max RPM (WOT) 5400-6100
Cylinders 2 (in-line)
Displacement (CID/cc) 21.4/351
Bore & Stroke (in/mm) 2.40″ x 2.36″ / 61 x 60mm
Cooling System Water-cooled w/thermostat
Ignition System CDI w/ electric spark advance
Starting Manual or electric
Gear Ratio 2.15:1
Gear Shift F-N-R (Shift-in-Handle Tiller or Remote Control)
Steering Tiller or remote
Alternator Amp 12 Volt – 12 Amp/138 Watt
Alternator Watt 138
Trim Positions 6 or power tilt
Shallow Water Drive Standard
Exhaust System Through prop
Lubrication System Wet sump
Recommended Oil Mercury 4-Stroke Outboard Oil 10w30
Oil Capacity 1.0 L / 1.1 Qt.
Fuel Induction System 2-valve single overhead cam
Remote Fuel Tank Standard 25L / 6.6 Gal
Shaft Length (inches/mm) 15″/20″     381/508mm
Dry Weight 115lbs / 52kg
Operator Warning System Low oil pressure    Over-rev
Available Propellers 9.25 x 10 Pitch standard
CARB Star Rating 3
Warranty 3 Years included, up to 7 total

 

25 HP

25 EFI Four Stroke Specifications

CONSISTENT STARTING
Mercury FourStroke EFI outboards deliver consistent, easy starts, smooth operation and reliability. The 25 and 30 hp models are the industry’s first batteryless EFI outboards.

BORN TO BE SMOOTH
All portable and mid-range Mercury FourStrokes feature INLINE DESIGNS for inherently smooth operation.

CLEAN POWER
All Mercury FourStrokes are designed to run clean, helping to protect the environment for generations to come. Every Mercury mid-range FourStroke engine carries a C.A.R.B. THREE-STAR ULTRA-LOW EMISSIONS RATING.

EASY SHIFTING
PRECISION ENGINEERED SHIFT SYSTEM delivers smooth shifting for an improved driving experience.

INDUSTRY-LEADING WARRANTY
Every Mercury outboard comes with a THREE-YEAR LIMITED FACTORY-BACKED, NON-DECLINING WARRANTY (except Mercury Racing models).25hp-fourstroke.jpg__255x0_q85_autocrop_crop-scale_replace_alpha-#fff_subsampling-2_upscale Warranty coverage can also be extended to SEVEN YEARS!

HP @ Prop 25
kW @ Prop 18.4
Max RPM (WOT) 5000-6000
Cylinder/Configuration 3 (in-line)
Displacement (CID/cc) 32.1/526
Bore & Stroke (in/mm) 2.40″ x 2.36″ / 61 x 60mm
Cooling System Water-cooled w/thermostat
Ignition System CDI w/electric spark advance
Starting Manual or Electric
Gear Ratio 1.92:1
Gear Shift F-N-R
Steering Tiller or remote
Alternator Amp/Watts 15A / 186 Watts
Trim System Manual or power trim
Shallow Water Drive Available
Exhaust System Through prop
Lubrication System Wet sump
Recommended Oil Mercury 4-Stroke Outboard Oil 10w30
Oil Capacity 1.8 L / 2 Qt.
Fuel Induction System 2-valve single overhead cam
Remote Fuel Tank Standard 25L / 6.6 Gal
Shaft Length (inches/mm) 15″/20″   381/508mm
Dry Weight 157lbs / 71kg
Operator Warning System Low oil pressure, over-rev, overheat, sensor failure
Available Propellers Consult current dealer propeller guide
CARB Star Rating 3
Warranty 3 years included, up to 7 total

 

30 HP

30 EFI Four Stroke Specifications

CONSISTENT STARTING
Mercury FourStroke EFI outboards deliver consistent, easy starts, smooth operation and reliability. The 25 and 30 hp models are the industry’s first batteryless EFI outboards.

BORN TO BE SMOOTH
All portable and mid-range Mercury FourStrokes feature INLINE DESIGNS for inherently smooth operation.

CLEAN POWER
All Mercury FourStrokes are designed to run clean, helping to protect the environment for generations to come. Every Mercury mid-range FourStroke engine carries a C.A.R.B. THREE-STAR ULTRA-LOW EMISSIONS RATING.

EASY SHIFTING
PRECISION ENGINEERED SHIFT SYSTEM delivers smooth shifting for an improved driving experience.

INDUSTRY-LEADING WARRANTY
Every Mercury outboard comes with a THREE-YEAR LIMITED FACTORY-BACKED, NON-DECLINING WARRANTY (except Mercury Racing models). Warranty coverage can also be extended to SEVEN YEARS!

HP @ Prop 30
kW @ Prop 22.4
Max RPM (WOT) 5250-6250
Cylinder/Configuration 3 (in-line)
Displacement (CID/cc) 32.1/526
Bore & Stroke (in/mm) 2.40″ x 2.36″ / 61 x 60mm
Cooling System Water-cooled w/thermostat
Ignition System CDI w/electric spark advance
Starting Manual or Electric
Gear Ratio 1.92:1
Gear Shift F-N-R
Steering Tiller or remote
Alternator Amp/Watts 15A / 186 Watts
Trim System Manual, Gas-Assist or Power Trim
Shallow Water Drive Available
Exhaust System Through prop
Lubrication System Wet sump
Recommended Oil Mercury 4-Stroke Outboard Oil 10w30
Oil Capacity 1.8 L / 2 Qt.
Fuel Induction System 2-valve single overhead cam
Remote Fuel Tank Standard 25L / 6.6 Gal
Shaft Length (inches/mm) 15″/20″ 381/508mm
Dry Weight 157lbs / 71kg
Operator Warning System Low oil pressure, over-rev, overheat, sensor failure
Available Propellers Consult current dealer propeller guide
CARB Star Rating 3
Warranty 3 years included, up to 7 total