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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

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

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.

The Mercury-exclusive Primer and Fast Idle systems start our 15 - 20hp FourStrokes fast and easy – hot or cold – and aren’t affected by variable fuel quality.

Specifications

FourStroke: 25-30 hp

  • 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
    Print Compare With Other Products
  • 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
    Print 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 25 hp EFI FourStroke Sun Tracker - Fishin Barge 24 Black Max® BHB -
11/2013 25 hp EFI FourStroke Sun Tracker - Fishin Barge 24 Black Max® BHB -
11/2013 25 hp EFI FourStroke Sun Tracker - Bass Buggy 18 Black Max® BHB -
11/2013 25 hp EFI FourStroke Tracker - Pro 170 Black Max® BHB -
11/2013 25 hp EFI FourStroke Tracker - Super Guide V-16 SC Black Max® BHB -
9/2013 25 hp EFI FourStroke Apex - Gillgetter 715 Cruise DLX Black Max® BHB -
9/2013 25 hp EFI FourStroke Apex - Gillgetter 715 F&C Black Max® BHB -
9/2012 25 hp EFI FourStroke Gillgetter - 715 Fishmaster Black Max® BHB -
7/2012 30 hp EFI FourStroke Misty Harbor - 1680 RE Black Max® BHB -
3/2012 25 hp EFI FourStroke MirroCraft - 1876 Outfitter EXP Black Max® BHB -
5/2006 25 hp EFI FourStroke Duracraft - 18 Fish 4 Point Black Max® BHB -
5/2006 25 hp EFI FourStroke Duracraft - 1542 FCR Black Max® BHB -
9/2005 30 hp EFI FourStroke Lund - WC 16 DLX Black Max® BHB -
9/2005 30 hp EFI FourStroke Lund - 1625 Classic Tiller Black Max® BHB -
Test Date: 11/2013
Engine: 25 hp EFI FourStroke
Boat: Sun Tracker - Fishin Barge 24
Prop: Black Max®
Type: BHB -
Test Date: 11/2013
Engine: 25 hp EFI FourStroke
Boat: Sun Tracker - Fishin Barge 24
Prop: Black Max®
Type: BHB -
Test Date: 11/2013
Engine: 25 hp EFI FourStroke
Boat: Sun Tracker - Bass Buggy 18
Prop: Black Max®
Type: BHB -
Test Date: 11/2013
Engine: 25 hp EFI FourStroke
Boat: Tracker - Pro 170
Prop: Black Max®
Type: BHB -
Test Date: 11/2013
Engine: 25 hp EFI FourStroke
Boat: Tracker - Super Guide V-16 SC
Prop: Black Max®
Type: BHB -
Test Date: 9/2013
Engine: 25 hp EFI FourStroke
Boat: Apex - Gillgetter 715 Cruise DLX
Prop: Black Max®
Type: BHB -
Test Date: 9/2013
Engine: 25 hp EFI FourStroke
Boat: Apex - Gillgetter 715 F&C
Prop: Black Max®
Type: BHB -
Test Date: 9/2012
Engine: 25 hp EFI FourStroke
Boat: Gillgetter - 715 Fishmaster
Prop: Black Max®
Type: BHB -
Test Date: 7/2012
Engine: 30 hp EFI FourStroke
Boat: Misty Harbor - 1680 RE
Prop: Black Max®
Type: BHB -
Test Date: 3/2012
Engine: 25 hp EFI FourStroke
Boat: MirroCraft - 1876 Outfitter EXP
Prop: Black Max®
Type: BHB -
Test Date: 5/2006
Engine: 25 hp EFI FourStroke
Boat: Duracraft - 18 Fish 4 Point
Prop: Black Max®
Type: BHB -
Test Date: 5/2006
Engine: 25 hp EFI FourStroke
Boat: Duracraft - 1542 FCR
Prop: Black Max®
Type: BHB -
Test Date: 9/2005
Engine: 30 hp EFI FourStroke
Boat: Lund - WC 16 DLX
Prop: Black Max®
Type: BHB -
Test Date: 9/2005
Engine: 30 hp EFI FourStroke
Boat: Lund - 1625 Classic Tiller
Prop: Black Max®
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

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