Boat, Yacht and Marine Directory is part of the Informa Markets Division of Informa PLC

This site is operated by a business or businesses owned by Informa PLC and all copyright resides with them. Informa PLC's registered office is 5 Howick Place, London SW1P 1WG. Registered in England and Wales. Number 8860726.

2017 Mercury 9.9 EXLH CT FOURSTROKE 25" Shaft

Start Easy

Incredibly responsive to get you going with little or no prep.


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.

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

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.

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.

Power in the Palm of Your Hand: Tiller models feature the exclusive Mercury multifunction tiller that puts shifting; throttle control (with improved slow-speed throttle advance for optimal trolling); stopping; tilting; steering in the palm of your hand.

Lightweight: At only 83 pounds, these engines are very portable and improve the performance of lightweight boats.

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.

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


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: 25 in. / 635 mm

Gearcase ratio: 2.42:1

Dry weight *Lightest model available: 96 lb. / 44 kg

CARB star rating: 3

Bore and stroke: 2.16 x 1.73 in. / 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: BigFoot

Trim system: Power Tilt

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


Dry weight based on lightest model available.

2017 Mercury 9.9 EXLH CT FOURSTROKE 25" Shaft

View this product at