2012 Mercury FourStroke 25 EFI

FourStroke 25 EFI

Innovating the industry with battery-free power.

Mercury FourStrokes have long led the pack in clean, quiet, fuel-efficient outboard power, and now the gap grows even wider. We combined innovative engineering with advanced reliability and features to make our outboards run clean, stay quiet, and deliver smooth, responsive performance - all while cutting your fuel and maintenance costs.

The 25 and 30hp FourStrokes have an industry-first battery-less EFI system for easier starting, smooth running, and improved efficiency. That's not a misprint - they feature electronic fuel injection with no battery.

Information

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Specifications

Engine Specs
  • Displacement (CID/cc) : 32.1 / 526
  • Cylinder/Configuration : 3 (in-line)
  • Bore & Stroke (in/mm) : 2.40 x 2.36in / 61 x 60mm
  • Fuel System : Electronic Fuel Injection (EFI)
  • Fuel Induction System : 2 valves per cylinder, single overhead cam (SOHC)
  • Cooling System : Water-cooled with thermostat
  • Full Throttle RPM Range : 5000-6000
  • Ignition System : CDI w/electronic spark advance
  • Starting : Electric (turn-key), Manual
  • Alternator Amp : 15 amp / 186 watt
  • Gear Shift : F-N-R
  • Steering : Remote, Tiller
  • Trim System : Manual, Power Trim
  • Recommended Oil : Mercury 4-Stroke Outboard Oil
  • CARB Star Rating : 3
  • Remote Fuel Tank : 6.6 gal / 25 L
  • Exhaust System : Though prop
  • Engine Protection Operator Warning System : Low oil pressure, Overheat, Over-rev, Sensor failure
  • Gearcase Options : 157lbs / 71kg
  • Gearcase Ratio : 1.92:1
  • Recommended Fuel : 87 octane/up to 10% ethanol
Specs
  • HP/Kw @ Prop : 25 / 18.6
  • Shaft Length : 15 in (381mm) / 20 in (508 mm)
  • Shallow Water Trim Range : 16 degrees