2018 Mercury Marine 9.9 HP
2018 Mercury Marine® Fourstroke 9.9 HP
Incredibly responsive to get you going with little or no prep.
Lightest engines in their class. Portable and simple to maneuver. Just point and boat.
FourStroke technology and Mercury. Always moving forward. With boater-driven innovations and technologies. Like electronic fuel injection. On-board digital monitoring that protects your engine. And a total commitment to corrosion protection utilizing hard-coat anodizing and a superior multi-step paint process. Mercury FourStroke engines have consistently set the bar for clean, quiet performance and low fuel consumption. Plus, no one has more models to fit your needs.
Features may include:
Mercury® ProKicker outboards feature a deeper gearcase and a four-blade, high-thrust propeller with matching gear ratio the perfect setup for trolling and precise control in all conditions. The ProKicker gearcase is engineered to be rugged and durable, with robust gears and bearings and a heavy-duty skeg thats 55% thicker and twice as strong side-to-side as the previous gearcase.
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!
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
The fastest power tilt in the industry drops a Mercury 9.9 - 15hp ProKicker FourStroke outboard into the water in just five seconds. Exclusive kicker-centering straps align and secure the outboard in full tilt-up position while youre underway.
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 improve