Engine Information and Specifications

Select Horsepower

Compare Outboard Motors
  •  25 EFI

    Specifications - 25 EFI

    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
    Recommended oil
    • Mercury FourStroke Oil 10W-30
    Engine protection operator warning system
    • Low oil pressure
    • Over-rev
    • Overheat
    • Sensor failure
    Starting
    • Manual
  •  20 EFI

    Engine Details

    Ultra-lightweight (just 99 pounds) and reliable, with little vibration. Innovative tiller lets you lock the tiller at 73 degrees – great for fishing and trailering. Perfect for aluminum tiller, inflatable soft hull, jon, utility, and sail boats.

    Specifications - 20

    HP / kW
    • 20/ 14.7
    Engine type
    • Inline 2
    Displacement (CID/CC)
    • 333 / 20.3
    Full throttle RPM
    • 5700 - 6200
    Fuel induction system
    • 2 valve single overhead cam (SOHC)
    Alternator amp / Watt
    • 12/145 electric
    Recommended oil
    • 25W-40 Synthetic Blend
    • Mercury FC-W 10W-30 4-Stroke Marine Oil
    Engine protection operator warning system
    • SmartCraft Engine Guardian
    Starting
    • Electric
    • Manual
    Steering
    • Remote
    • Tiller
  •  8

    Engine Details

    Enhancements include simplified starting procedure, faster warmup, and better idle run quality. Lightweight: just 84 pounds. Great for aluminum tiller, inflatable soft hull, jon, utility, and sail boats.

    Specifications - 8

    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
    Recommended oil
    • Mercury FourStroke Oil 10W-30
    Engine protection operator warning system
    • Low oil pressure
    • Over-rev
    Starting
    • Manual
Mercury Marine introduces all-new 20hp EFI FourStroke outboard & the world’s first portable outboard tiller handle with ambidextrous control

Mercury Marine introduces all-new 20hp EFI FourStroke outboard & the world’s first portable outboard tiller handle with ambidextrous control

Mercury Marine announces the introduction of its ultra-lightweight & reliable 20hp EFI FourStroke outboard platform. Learn more.

Announcing NEW Mercury 20hp & 15hp outboards

Announcing NEW Mercury 20hp outboard

The ultimate boating experience comes standard on the new Mercury Marine 20hp outboard motors. Mercury’s newest addition to its lineup of portable FourStroke outboard motors is designed and built to improve every aspect of your time on the water, from starting the engine to changing the oil and everything in between.

Documents

Brochures
Brochures

Take a deeper dive into what makes Mercury outboards stand apart with detailed information on each motor and the features that make them unique.

http://www.mercurymarine.com/en/br/engines/outboard/fourstroke/8-25-hp/