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Grove Harbour Marine
2017 Mercury FourStroke 9.9 HP
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Incredibly responsive to get you going with little or no prep.

Standard Features
  • Phantom Black
  • Command Thrust
    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.
  • Convenient and Easy Tilting.
    Push down on the tiller handle to easily tilt the outboard to any position, made easy with our exclusive ratcheting transom bracket.
  • Enhanced Features.
    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
  • Lightweight.
    At only 83 pounds, these engines are very portable and improve the performance of lightweight boats.
  • More Thrust.
    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 that's 55% thicker and twice as strong side-to-side as the previous gearcase.
  • Power Tilt.
    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 you're underway.
  • Power in the Palm of Your Hand.
    Tiller models feature the exclusive Mercury multifunction tiller that puts

    throttle control (with improved slow-speed throttle advance for optimal trolling)

    in the palm of your hand.
  • Repower Financing.
    With Mercury Repower Financing, you can easily power up everything from fishing boats, to runabouts, to cruisers with flexible financing on the engine. You can also choose to finance rigging, gauges, controls and even labor. Mercury Repower Financing offers low rates and low monthly payments to fit a boater's budget.
  • Start Easily, Idle Smoothly.
    Mercury 8hp to 20hp FourStroke outboards have features that make starting easier, warm-ups faster and idling smoother!

    The fuel filter on 8hp to 20hp Mercury FourStrokes has been moved to keep the carburetor cleaner
    Tiller handle models have a richer air/fuel mix at idle
    They also come standard with a three-position choke, eliminating the need for a primer button
Engine Specs
Displacement (CID/cc)12.8 / 208
Engine TypeInline 2
Bore & Stroke (in/mm)2.16 x 1.73" / 55 x 44 mm
Fuel SystemCarbureted
Fuel Induction System2 valves per cylinder, single overhead cam (SOHC)
Cooling SystemWater-cooled with thermostat
Full Throttle RPM Range5000-6000
Ignition SystemCDI w/electronic spark advance
Gear ShiftF-N-R
Trim PositionsRatcheting
Shallow Water DriveYes
Recommended OilMercury FourStroke Oil 10W-30
CARB Star Rating3
Exhaust SystemThrough prop
HP / kW9.9 / 7.3
Remote Fuel Tank Standard (Gal / L)3.2 / 12
Recommended Fuel87% octane / up to 10% ethanol
Engine Protection Operator Warning SystemLow oil pressure
Shallow Water Trim Range (Degrees)16
Dry Weight * Lightest model available84 lbs / 38 kg
Gearcase Ratio2.08:1
Shaft Length15" / 381 mm
20" / 508 mm
Alternator amp / Watt6 amp / 76 watt
Gearcase OptionsStandard