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Mercury 90 HP Twostroke

Mercury 90 HP Twostroke – The secret to our mid-range is our renowned reliability thanks to its cool running. With high volume, low pressure, floppy-vane water impellers keeping operating conditions down.

Calculate your fuel savings

The Mercury Fuel Savings Calculator will allow you to easily calculate the possible fuel savings of a Mercury FourStroke outboard!

Choose how you use your boat, select the TwoStroke and FourStroke horsepower – and our tool will show your potential fuel savings. If you're looking to upgrade or add more power, you can even choose different FourStroke and TwoStroke horsepower options!

Largest displacement.

With the largest engine capacity displacement in their horsepower category, the TwoStrokes give you more low-end thrust.

HP / kW
  • 90 / 67
Displacement (CID/CC)
  • 84.6 / 1386
Cylinder Configuration
  • I-3
Full throttle RPM
  • 5000 – 5500
Fuel induction system
  • Loop-charged (3 carb)
Alternator amp / Watt
  • 18 amp / 226 watt
Starting
  • Electric
Steering
  • Remote
Shaft length
  • 20″ / 508 mm
  • 25″ / 635 mm
Gearcase ratio
  • 2.33 : 1
Dry weight *Lightest model available
  • 137
Emissions Star Rating
  • 1
Bore and stroke
  • 89 x 75
Trim system
  • Power Trim
Oil Injection
  • Standard