Mercury 9.9 HP Twostroke – Whether you’re a fisherman, a yachtie or looking to run a smaller leisure vessel – Mercury’s range of portable TwoStrokes provide the power that can go anywhere and keep on going.

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!

Lightweight.

Easy to handle with conveniently located carrying handles and grips.

Powerful.

With proven reliability around the world. 

Instant Start.

Easy starting with modular electronic CD ignition. And very simple to maintain too.

HP / kW
  • 9.9 / 7.2
Engine type
  • Inline 2
Displacement (CID/CC)
  • 10.3 / 169
Full throttle RPM
  • 5000 – 6000
Fuel induction system
  • Loop-charged (1 carb)
Recommended fuel
  • Pre-Mix 50:1
Recommended oil
  • 2-Cycle TC-W3
Starting
  • Electric
  • Manual
Steering
  • Remote
  • Tiller
Shaft length
  • 15″ / 381 mm
  • 20″ / 508 mm
Gearcase ratio
  • 2.08 : 1
Dry weight *Lightest model available
  • 26 kg
Bore and stroke
  • 50mm x 43mm
Ignition
  • CDI w/electronic spark advance
Fuel system
  • Carbureted
Cooling system
  • Water-cooled with thermostat
Gear shift
  • F-N-R
Trim system
  • 6 position
  • Manual
Exhaust system
  • Through prop
Shallow water trim range (degrees)
  • 20
Remote fuel tank standard (gal / L)
  • 3.2 / 12
Color
  • Phantom Black
Lubrication system
  • Pre-Mix
Oil Injection
  • Pre-mix