2018 Mercury 9.9ELHPT-CT-PK 9.9HP Command Thrust Outboard Motor

The 2018 Mercury 9.9ELHPT-CT-PK 9.9HP Command Thrust Outboard Motor is designed to deliver powerful thrust and exceptional control for wider, heavier boats. Built with Mercury’s advanced Command Thrust gearcase, this outboard motor provides enhanced propulsion, improved maneuverability, and reliable performance in demanding marine conditions.

This model features a 20% larger propeller and a taller gearcase, allowing the propeller to operate deeper below turbulent water. The result is better grip, smoother handling, and greater efficiency when pushing heavier boats such as sailboats, pontoons, and fishing vessels.

With its 2.42:1 gear ratio and high-thrust propeller, the Mercury 9.9HP Command Thrust engine delivers impressive low-speed power, making it an excellent choice for trolling, kicker motor setups, and sailboat auxiliary power.

The oversized anti-ventilation plate helps prevent air from being drawn into the propeller, improving propulsion efficiency and ensuring consistent thrust even in rough water conditions.

For ease of use, the engine includes Mercury’s multi-function tiller handle, allowing one-handed operation of Forward-Neutral-Reverse shifting, throttle control, steering, throttle tension adjustment, and engine stop.

Powered by a smooth and fuel-efficient two-cylinder four-stroke engine, this outboard provides quiet operation while maintaining excellent reliability and performance.

Built with high-grade marine alloy construction, stainless steel components, and zinc-coated internal water passages, the engine is fully saltwater-rated and designed for long-term durability.

With electric start, backup manual start, and a 12-volt alternator, the Mercury 9.9ELHPT provides dependable power and convenient operation.

Backed by Mercury Marine’s 3-Year Factory Warranty, this engine offers confidence and reliability for recreational boaters and professional anglers alike.

Key Features

• Command Thrust lower unit with 2.42:1 gear ratio

• High thrust 4-blade aluminum propeller

• Designed for heavier boats and sailboat applications

• Compact and lightweight design

• Electric start with backup manual start

• 12V 76W 6A alternator for charging electronics

• Multi-function tiller handle with integrated controls

• Forward-Neutral-Reverse shifting in tiller handle

• Adjustable steering tension control

• Twist-grip throttle with tension adjustment

• Thermostat-controlled water cooling system

• Oversized anti-ventilation plate

• Quiet through-propeller hub exhaust

• High-grade marine alloy construction

• Stainless steel water pump housing

• Zinc-coated internal water passages

• Sacrificial zinc anodes and trim tab

• Start-in-gear safety protection

• Low oil pressure warning indicator

• ESG over-rev protection system

• Safety lanyard emergency stop switch

Motor Specifications

Model: 9.9ELHPT-CT-PK
Model Year: 2018
Manufacturer: Mercury Marine
Country of Manufacture: Japan

Horsepower: 9.9 HP
Engine Type: 4-Stroke
Cylinders: 2

Shaft Length: 20″ Long
Steering: Tiller
Starting System: Electric Start
Trim & Tilt: Power Tilt

Fuel Delivery: Carburetor
Fuel Tank: External

Displacement: 208 cc (12.8 cu in)
Bore x Stroke: 55 × 44 mm (2.16 × 1.73 in)

Full Throttle RPM Range: 5000 – 6000 RPM

Ignition System: Digital CDI with electronic spark advance

Fuel Type: 87 Octane (up to 10% ethanol)

Fuel Tank Capacity: 3.2 gallons

Cooling System: Water-cooled, thermostat controlled

Gear Ratio: 2.42:1 Command Thrust gearcase

Gear Shift: Forward – Neutral – Reverse

Propeller:
Command Thrust 4-Blade High-Thrust Aluminum Propeller

Weight: 111 lbs

Oil Type: Mercury 4-Stroke Outboard Oil (SAE 10W-30)

Oil Capacity: 27 fl oz (800 ml)

Alternator Output: 12V 76W 6A

Saltwater Rated: Yes

What’s Included in the Box

• 3.2 Gallon Fuel Tank

• Quick-Connect Fuel Line

• 4-Blade Aluminum Propeller

• Mercury 4-Stroke Engine Oil

• Owner’s Manual

• Tool Kit

• Mercury Marine 3-Year Factory Warranty