Equipped with a larger gear case for more thrust, the Mercury 9.9hp Command Thrust FourStroke delivers big-time power and control that wider, heavier boats demand. The Command Thrust gear case allows a wider selection of propellers to get the performance just right. So, if you're powering a barge, pontoon or heavier displacement hull, the 9.9hp is the perfect partner. Exclusive to Mercury and designed for easy control, the Multi-function tiller handle makes boating easy allowing gear shift, throttle, steer, tilt and stop the engine with just one hand. All recreational Mercury outboard models from the 2.5 - 350hp range now come with 3+3= 6 years of warranty coverage. World class engines, world class support, that's what you get when you buy a Mercury.
HP / kW |
9.9 / 7.3 |
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 |
Remote
Tiller |
Shaft length |
15" / 381 mm
20" / 508 mm
25" / 635 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 |