Incredibly responsive, to get you going with little or no preparation at all!
The Mercury 8 and 9.9hp FourStroke outboards include:
New three-position choke and no primer button improve starting, simplify the starting procedure and allow the engine to warm up faster
A richer idle air/fuel mix makes the engine easier to start and provides better idle running quality (tiller handle models)
A change to the ignition timing allows fishermen to find and hold optimal troll speed
Big-time power. With a longer design and bigger components, Mercury Command Thrust was made specifically to deliver the type of power, thrust and control that wider, heavier boats demand.
The Command Thrust Difference (Blue shaded areas represent prop and gearcase advantages)
20% larger prop increases control especially at low speeds.
Taller gearcase puts the prop deeper, below turbulent water, for improved performance.
A low 2.42:1 gear ratio delivers thrust and maneuveraility that big loads demand.
Oversized Antiventilation Plate. Oversized design prevents air from being drawn into the prop, which increases efficiency.
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)
Recommended fuel Unleaded 90RON minimum
Recommended oil Mercury FourStroke Oil 10W-30
Engine protection operator warning system Low oil pressure, Over-rev
Steering Tiller / remote with long version
Shaft length 15″/381 mm
Gearcase ratio 2.08:1
Dry weight *Lightest model available 38 kg
CARB 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 propeller
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