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Mercury Marine 25MH FourStroke
Mercury Marine 25MH FourStroke

Specs

General Information

Manufacturer
Mercury Marine
Mercury Marine
Model
25MH FourStroke
25MH FourStroke
Model Code
1A25203BK
1A25203BK
Color
Phantom Black
Phantom Black

Engine

Engine Type
Inline 3
Inline 3
Starting
Manual
Manual

Measurements

Power
25 Horsepower
25 Horsepower
Displacement
500 Cubic Centimeter
500 Cubic Centimeter
Shaft Length
15"
15"
Dry Weight
132 lbs
132 lbs

Operational

Steering
Tiller
Tiller
Fuel Type
Unleaded
Unleaded
Full Throttle RPM Range
5,400 - 5,800
5,400 - 5,800
Fuel Induction
Performance-tuned scroll intake manifold
Performance-tuned scroll intake manifold
Gear Ratio
2.17:1
2.17:1
Trim System
6-position manual
6-position manual

Features

Features

  • SMARTCRAFT. THE POWER TO DO MORE.: SmartCraft® is a full suite of digital technologies, fully integrated and totally coordinated. Gauges, sensors, vessel systems, computer-controlled features – one total package, one high level of control. Make your boating experience easier, safer and a lot more enjoyable.
  • VESSELVIEW MOBILE®: With the VesselView Mobile plug-and-play module, you’ll always know what’s happening under the cowling. It wirelessly connects your engine with a mobile app, making it easy to monitor performance data and track routine maintenance on a tablet or smartphone. VesselView Mobile is compatible with all SmartCraft-capable Mercury outboards (2004 and newer, 40hp and above; 2022 and newer, 25hp and above).
  • VESSELVIEW® LINK: VesselView Link integrates with compatible Lowrance® or Simrad® multi-function displays, putting Mercury engine information and SmartCraft® controls at your fingertips on the displays you use most. VesselView Link is compatible with all SmartCraft-capable Mercury outboards (2004 and newer, 40hp and above; 2022 and newer, 25hp and above).
  • SMARTCRAFT® CONNECT: Garmin® and Raymarine® users can tap into the VesselView user interface on their favorite multi-function displays with the SmartCraft Connect module. Track key engine data and monitor performance from the same display as the chartplotter and sonar. SmartCraft Connect is compatible with all SmartCraft-capable Mercury outboards (2004 and newer, 40hp and above; 2022 and newer, 25hp and above).
  • TROLL CONTROL: Troll Control eases the critical task of precisely maintaining a targeted trolling speed by locking in the engine rpm. Once set, adjustments can be made in 10-rpm increments to counter changes in wind, direction or current. Troll Control is compatible with all current SmartCraft-capable Mercury outboards (2004 and newer, 40hp and above; 2022 and newer, 25hp and above)
  • WARRANTY: World-class marine products backed by world-class warranties. We stand behind everything we build, and we go the extra mile to make sure your Mercury experience is the best it can be. Both on and off the water.
  • MERCURY PRODUCT PROTECTION: Mercury Product Protection® is an extended service contract for your Mercury engine that covers certain expenses caused by defects in materials and workmanship after the Mercury Limited Warranty expires.
  • MAINTENANCE: We made maintenance easier with features like a no-spill oil-change system, easy-out filters and a gearcase that will fully drain from any tilt position. It’s simple enough that you can complete the job anywhere, from a remote outpost to your garage at home. Plus, fully sealed electrical components, highly durable finishes and the industry’s most advanced corrosion-resistant alloys protect your engine from corrosion while ensuring years of reliable service.
  • Fuel Compatibility - 87 octane minimum / up to 10% ethanol

FourStroke Advantage

  • POWER TO MOVE MORE: With efficient air intake, the powerhead generates impressive torque to move heavy loads with ease. And because the engine works less, it lasts longer, for years of reliable service.
  • REMOTE OR TILLER CONTROLS: Configure your outboard to fit your boat and your needs, with remote controls for steering from the helm or a nearly 23-inch tiller that’s perfect for precision handling.
  • COMFORTABLE SETTING: The tiller adjusts for left- or right-handed driving and features a down-angle stop that holds it at the right height for comfortable steering while seated or standing. Throttle friction can also be adjusted to help hold speed.
  • CUSTOM-MATCHED PROP: A series of Black Max propellers, designed specifically for the 25 and 30hp FourStroke family and offered in 1-inch pitch increments, lets you choose the perfect prop to optimize performance with your boat.

FourStroke Performance Data

  • LIGHTWEIGHT & COMPACT: Pound for pound, these outboards are big performers. They’re among the lightest 3-cylinder outboards in their class.
  • POWERFUL ALTERNATOR: Even at low speeds, the 17-amp alternator delivers powerful battery-charging output to keep onboard electronics humming. And there are no belts or bearings to maintain.

Intuitive, Innovative Features

  • EXCEPTIONALLY SMOOTH AND QUIET: We balanced the powerhead to make it smoother and crafted soft-rubber mounts that isolate vibration and direct it away. Whether you’re fishing in a quiet cove or having a conversation, you’ll enjoy every minute on the water.
  • EASY TO MAINTAIN: Spend less time on service and more time on the water with our no-spill oil change system, easy-change gear lube and lifetime maintenance-free valve train.
  • ELECTRONIC FUEL INJECTION: Electronic fuel injection (EFI) provides surefire starts in any weather. On manual-start engines, battery-free EFI delivers efficient, reliable performance without a bulky cranking battery.
  • ADVANCED MERCURY TILLER: The Mercury tiller adapts to you, not the other way around. You can reverse the grip for left- or right-handed throttling and laterally adjust the tiller angle for better leverage and control.
  • AVAILABLE POWER TILT AND TRIM: Easy to stow, easy to control. Power tilt and trim, available for 25 and 30hp FourStroke outboards, lets you adjust the running attitude with the push of a CTA. A major advantage for small vessels and heavy loads.

Features

  • SMARTCRAFT. THE POWER TO DO MORE.: SmartCraft® is a full suite of digital technologies, fully integrated and totally coordinated. Gauges, sensors, vessel systems, computer-controlled features – one total package, one high level of control. Make your boating experience easier, safer and a lot more enjoyable.
  • VESSELVIEW MOBILE®: With the VesselView Mobile plug-and-play module, you’ll always know what’s happening under the cowling. It wirelessly connects your engine with a mobile app, making it easy to monitor performance data and track routine maintenance on a tablet or smartphone. VesselView Mobile is compatible with all SmartCraft-capable Mercury outboards (2004 and newer, 40hp and above; 2022 and newer, 25hp and above).
  • VESSELVIEW® LINK: VesselView Link integrates with compatible Lowrance® or Simrad® multi-function displays, putting Mercury engine information and SmartCraft® controls at your fingertips on the displays you use most. VesselView Link is compatible with all SmartCraft-capable Mercury outboards (2004 and newer, 40hp and above; 2022 and newer, 25hp and above).
  • SMARTCRAFT® CONNECT: Garmin® and Raymarine® users can tap into the VesselView user interface on their favorite multi-function displays with the SmartCraft Connect module. Track key engine data and monitor performance from the same display as the chartplotter and sonar. SmartCraft Connect is compatible with all SmartCraft-capable Mercury outboards (2004 and newer, 40hp and above; 2022 and newer, 25hp and above).
  • TROLL CONTROL: Troll Control eases the critical task of precisely maintaining a targeted trolling speed by locking in the engine rpm. Once set, adjustments can be made in 10-rpm increments to counter changes in wind, direction or current. Troll Control is compatible with all current SmartCraft-capable Mercury outboards (2004 and newer, 40hp and above; 2022 and newer, 25hp and above)
  • WARRANTY: World-class marine products backed by world-class warranties. We stand behind everything we build, and we go the extra mile to make sure your Mercury experience is the best it can be. Both on and off the water.
  • MERCURY PRODUCT PROTECTION: Mercury Product Protection® is an extended service contract for your Mercury engine that covers certain expenses caused by defects in materials and workmanship after the Mercury Limited Warranty expires.
  • MAINTENANCE: We made maintenance easier with features like a no-spill oil-change system, easy-out filters and a gearcase that will fully drain from any tilt position. It’s simple enough that you can complete the job anywhere, from a remote outpost to your garage at home. Plus, fully sealed electrical components, highly durable finishes and the industry’s most advanced corrosion-resistant alloys protect your engine from corrosion while ensuring years of reliable service.
  • Fuel Compatibility - 87 octane minimum / up to 10% ethanol

FourStroke Advantage

  • POWER TO MOVE MORE: With efficient air intake, the powerhead generates impressive torque to move heavy loads with ease. And because the engine works less, it lasts longer, for years of reliable service.
  • REMOTE OR TILLER CONTROLS: Configure your outboard to fit your boat and your needs, with remote controls for steering from the helm or a nearly 23-inch tiller that’s perfect for precision handling.
  • COMFORTABLE SETTING: The tiller adjusts for left- or right-handed driving and features a down-angle stop that holds it at the right height for comfortable steering while seated or standing. Throttle friction can also be adjusted to help hold speed.
  • CUSTOM-MATCHED PROP: A series of Black Max propellers, designed specifically for the 25 and 30hp FourStroke family and offered in 1-inch pitch increments, lets you choose the perfect prop to optimize performance with your boat.

FourStroke Performance Data

  • LIGHTWEIGHT & COMPACT: Pound for pound, these outboards are big performers. They’re among the lightest 3-cylinder outboards in their class.
  • POWERFUL ALTERNATOR: Even at low speeds, the 17-amp alternator delivers powerful battery-charging output to keep onboard electronics humming. And there are no belts or bearings to maintain.

Intuitive, Innovative Features

  • EXCEPTIONALLY SMOOTH AND QUIET: We balanced the powerhead to make it smoother and crafted soft-rubber mounts that isolate vibration and direct it away. Whether you’re fishing in a quiet cove or having a conversation, you’ll enjoy every minute on the water.
  • EASY TO MAINTAIN: Spend less time on service and more time on the water with our no-spill oil change system, easy-change gear lube and lifetime maintenance-free valve train.
  • ELECTRONIC FUEL INJECTION: Electronic fuel injection (EFI) provides surefire starts in any weather. On manual-start engines, battery-free EFI delivers efficient, reliable performance without a bulky cranking battery.
  • ADVANCED MERCURY TILLER: The Mercury tiller adapts to you, not the other way around. You can reverse the grip for left- or right-handed throttling and laterally adjust the tiller angle for better leverage and control.
  • AVAILABLE POWER TILT AND TRIM: Easy to stow, easy to control. Power tilt and trim, available for 25 and 30hp FourStroke outboards, lets you adjust the running attitude with the push of a CTA. A major advantage for small vessels and heavy loads.