Compare Models

Mercury Marine 25MLH SeaPro FourStroke
Mercury Marine 25MLH SeaPro FourStroke

Specs

General Information

Manufacturer
Mercury Marine
Mercury Marine
Model
25MLH SeaPro FourStroke
25MLH SeaPro FourStroke
Model Code
1A25217BK
1A25217BK
Color
Phantom Black
Phantom Black

Engine

Engine Type
Inline 3
Inline 3
Ignition
CDI with electronic spark advance
CDI with electronic spark advance
Starting
Manual
Manual
Exhaust
Through prop
Through prop

Measurements

Power
25 Horsepower
25 Horsepower
Displacement
500 Cubic Centimeter
500 Cubic Centimeter
Bore x Stroke
2.40 x 2.24 in. (61 x 57 mm)
2.40 x 2.24 in. (61 x 57 mm)
Shaft Length
20"
20"
Dry Weight
163 lbs
163 lbs

Operational

Steering
Tiller
Tiller
Fuel Type
Unleaded
Unleaded
Full Throttle RPM Range
5,400 - 5,800
5,400 - 5,800
Fuel Induction

2 valve single overhead cam (SOHC)

Fuel system - Electronic Fuel Injection (EFI)

2 valve single overhead cam (SOHC)

Fuel system - Electronic Fuel Injection (EFI)

Lubrication
Recommended oil - 25W-40 Synthetic Blend, Mercury FC-W 10W-30 4-Stroke Marine Oil
Recommended oil - 25W-40 Synthetic Blend, Mercury FC-W 10W-30 4-Stroke Marine Oil
Cooling
Water-cooled with thermostat
Water-cooled with thermostat
Gear Ratio
2.17:1
2.17:1
Gear Shift

F-N-R

Gearcase option - Standard

F-N-R

Gearcase option - Standard

Trim System

Manual

6 position

Shallow water drive

Shallow water range - 16°

Manual

6 position

Shallow water drive

Shallow water range - 16°

Instrumentation
Engine protection operator warning system - Low oil pressure, Over-rev, Overheat
Engine protection operator warning system - Low oil pressure, Over-rev, Overheat

Features

Features

  • Recommended fuel - 87 octane / up to 10% ethanol
  • CARB star rating - 3
  • Compatible with SmartCraft digital technology
  • Fuel tank - 6.6 gal. (25 l)

Intuitive, Innovative Features

  • ELECTRONIC FUEL INJECTION (EFI): From the moment you crank the engine to the moment you drop the throttle, EFI technology responds with instant power. Surefire starting in all weather conditions. Smooth, efficient acceleration. Maximum capability.
  • BATTERY-FREE EFI: Go farther, confidently, with battery-free EFI technology. Included with manual-start models, it gives you the flexibility of portability, without needing to bring along a cranking battery.
  • CONVENIENT MAINTENANCE: Spend less time on service and more time on the clock with our no-spill oil change system, easy-out fuel filter, lifetime maintenance-free valve train and a gearcase that will fully drain from any tilt position.
  • ADVANCED TILLER: The Mercury tiller adapts to you, not the other way around. You can reverse the grip for left- or right-handed throttling and adjust the tiller angle laterally and vertically for better leverage and control.
  • CORROSION RESISTANCE: Durable alloys, sealed electrical components and serviceable anodes protect against corrosion in harsh conditions.

Performance Data

  • SMOOTH & QUIET: From the balanced powerhead design to vibration-dampening materials, these outboards were engineered to be exceptionally smooth and quiet. So you can stay focused on the job in front of you.
  • LIGHTWEIGHT PERFORMANCE: By minimizing weight at every opportunity, Mercury delivers a performance and efficiency boost to small boats.
  • HIGH TORQUE: High-volume air intake boosts torque, for faster acceleration, while the high-displacement powerhead works less to move more, providing a longer service life.

SeaPro Advantage

  • FLEXIBLE, VERSATILE POWER: Choice of remote or tiller controls and manual or electric start lets you set up your engine to meet your needs.
  • SMALL BUT MIGHTY: With their high torque and rugged durability, SeaPro outboards deliver exceptional capability in a range of commercial settings.
  • VALUABLE FUEL SAVINGS: Light and efficient, SeaPro outboards help you get more done on every drop of fuel. The engine is also optimized for 87 octane for further savings at the pump.
  • COMMERCIAL-GRADE PERFORMANCE: Maximum toughness. Superior corrosion resistance. Ultimate reliability. A SeaPro outboard shows up on time, ready to work. The perfect co-worker.

Warranty & Maintenance

  • WARRANTY COVERAGE: Mercury makes world-class marine products backed by world-class warranties.
  • MAINTENANCE: At Mercury, we make maintenance easy. Learn more about how to keep your Mercury products performing at their peak.

Features

  • Recommended fuel - 87 octane / up to 10% ethanol
  • CARB star rating - 3
  • Compatible with SmartCraft digital technology
  • Fuel tank - 6.6 gal. (25 l)

Intuitive, Innovative Features

  • ELECTRONIC FUEL INJECTION (EFI): From the moment you crank the engine to the moment you drop the throttle, EFI technology responds with instant power. Surefire starting in all weather conditions. Smooth, efficient acceleration. Maximum capability.
  • BATTERY-FREE EFI: Go farther, confidently, with battery-free EFI technology. Included with manual-start models, it gives you the flexibility of portability, without needing to bring along a cranking battery.
  • CONVENIENT MAINTENANCE: Spend less time on service and more time on the clock with our no-spill oil change system, easy-out fuel filter, lifetime maintenance-free valve train and a gearcase that will fully drain from any tilt position.
  • ADVANCED TILLER: The Mercury tiller adapts to you, not the other way around. You can reverse the grip for left- or right-handed throttling and adjust the tiller angle laterally and vertically for better leverage and control.
  • CORROSION RESISTANCE: Durable alloys, sealed electrical components and serviceable anodes protect against corrosion in harsh conditions.

Performance Data

  • SMOOTH & QUIET: From the balanced powerhead design to vibration-dampening materials, these outboards were engineered to be exceptionally smooth and quiet. So you can stay focused on the job in front of you.
  • LIGHTWEIGHT PERFORMANCE: By minimizing weight at every opportunity, Mercury delivers a performance and efficiency boost to small boats.
  • HIGH TORQUE: High-volume air intake boosts torque, for faster acceleration, while the high-displacement powerhead works less to move more, providing a longer service life.

SeaPro Advantage

  • FLEXIBLE, VERSATILE POWER: Choice of remote or tiller controls and manual or electric start lets you set up your engine to meet your needs.
  • SMALL BUT MIGHTY: With their high torque and rugged durability, SeaPro outboards deliver exceptional capability in a range of commercial settings.
  • VALUABLE FUEL SAVINGS: Light and efficient, SeaPro outboards help you get more done on every drop of fuel. The engine is also optimized for 87 octane for further savings at the pump.
  • COMMERCIAL-GRADE PERFORMANCE: Maximum toughness. Superior corrosion resistance. Ultimate reliability. A SeaPro outboard shows up on time, ready to work. The perfect co-worker.

Warranty & Maintenance

  • WARRANTY COVERAGE: Mercury makes world-class marine products backed by world-class warranties.
  • MAINTENANCE: At Mercury, we make maintenance easy. Learn more about how to keep your Mercury products performing at their peak.