Mercury 8 HP Fourstroke – Four-stroke technology and Mercury. Always moving forward. With boater-driven innovations and technologies. Like electronic fuel injection. On-board digital monitoring that protects your engine. And a total commitment to corrosion protection utilizing hard-coat anodizing and a superior multi-step paint process. Mercury FourStroke engines have consistently set the bar for clean, quiet performance and low fuel consumption. Plus, no one has more models to fit your needs.

HP / kW
  • 8 / 5.9
Engine type
  • Inline 2
Displacement (CID/CC)
  • 12.8 / 208
Full throttle RPM
  • 5000-6000
Fuel induction system
  • 2 valves per cylinder, single overhead cam (SOHC)
Alternator amp / Watt
  • 6 amp / 76 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
Starting
  • Electric
  • Manual
Steering
  • Tiller
Shaft length
  • 15″ / 381 mm
  • 20″ / 508 mm
Gearcase ratio
  • 2.08:1
Dry weight *Lightest model available
  • 84 lbs / 38 kg
CARB star rating
  • 3
Emissions Star Rating
  • 3
Bore and stroke
  • 2.16 x 1.73″ / 55 x 44 mm
Ignition
  • CDI w/electronic spark advance
Fuel system
  • Carbureted
Cooling system
  • Water-cooled with thermostat
Gear shift
  • F-N-R
Gearcase options
  • Standard
Trim positions
  • Ratcheting
Exhaust system
  • Through prop
Shallow water drive
  • Yes
Shallow water trim range (degrees)
  • 16
Integrated fuel tank (gal / L)
  • 3.2 / 12
Remote fuel tank standard (gal / L)
  • 3.2 / 12
Color
  • Phantom Black