The Mercury 9.9 HP Outboard motor with Command Thrust delivers the power, thrust, and control that wider, heavier boats need. A 20% larger prop increases control and a taller gearcase puts the prop deeper below turbulent water for improved performance. A low 2.42:1 gear ratio and high thrust propeller make the 103 lb. Mercury 9.9 outboard engine an excellent choice for sailboat and trolling/kicker applications. The Command Thrust over-sized, anti-ventilation plate prevents air from being drawn into the propeller, further enhancing efficiency and performance. The 9.9 HP Mercury Outboard Motor model: 9.9ELHPT-CT-PK is equipped with a 20-inch long shaft and electric start, power tilt, and Mercury’s multi-function tiller handle which allows one-handed operation of F-N-R gear shifting, throttle, and throttle tension, steering, and stopping.
Additional information
| Horsepower | 9.9 HP |
|---|---|
| Shaft Length | 20″ (Long) |
| Starter Type | Electric |
| Tilt & Trim | Power Tilt |
FEATURES
- Compact and Lightweight
- Designed for Heavy Applications
- CommandThrust Lower Unit (2.42:1 Gear Ratio)
- High Thrust Propeller
- Oversized Anti-Ventilation Plate
- Electric Start + 12V 76W 6A Alternator
- Thru-Cowl Backup Manual Start
- Digital CD Ignition with Spark Advance
- High Grade Marine Alloy Construction
- Stainless Steel Water Pump Housing
- Zinc Coated Water Passages
- Rated for Saltwater Use
- Sacrificial Zinc Anodes and Trim Tab
- Tiller Integrated F-N-R Gear Shifting
- Adjustable Steering Tension Control
- Twist-Grip Throttle with Tension Control
- Thermostat Controlled Water Cooling
- Heavy Duty Transom Mounting Bracket
- Power Operated Tilt (Range: -4° to 75°)
- Quiet Through-Propeller-Hub Exhaust
- 3.2 Gallon Fuel Tank and Fuel Line
- Start-In-Gear Protection
- Low Oil Pressure Warning Indicator
- ESG Over-Rev Protection
- Safety Lanyard Stop Switch
- Owner’s Manual
- Mercury Marine 3-Year Warranty
SPECS
| MODEL | 9.9ELHPT-CT-PK |
|---|---|
| MODEL YEAR | 2021 |
| SKU | 9.9ELHPT-CT-PK-21 |
| WEIGHT | 111.0 lb |
| MANUFACTURER | Mercury |
| COUNTRY OF MANUFACTURE | Japan |
| HORSEPOWER | 9.9hp |
| SHAFT LENGTH | 20″ (Long) |
| STEERING | Tiller |
| STARTING | Electric |
| TRIM & TILT | Power Tilt |
| FUEL DELIVERY | Carburetor |
| FUEL TANK | External |
| CYLINDER(S) | 2 |
| DISPLACEMENT | 208 cc (12.8 cubic inches) |
| BORE AND STROKE | 55 x 44 mm (2.16 x 1.73 inches) |
| FULL THROTTLE RPM RANGE | 5000-6000 |
| IGNITION SYSTEM | Digital CD Ignition w/Electronic Spark Advance |
| INDUCTION SCAVENGING | SOHC |
| VALVES PER CYLINDER | 2 |
| FUEL TYPE | 87 Octane (up to 10% ethanol content) |
| FUEL TANK / FUEL LINE | 3.2 Gal. Fuel Tank + Quick Connect Fuel Line |
| OIL TYPE | SAE 10W-30 (Mercury 4-Stroke Outboard Oil) |
| OIL CAPACITY | 27 fl. Oz. (800 ml) |
| LUBRICATION | Trochoid Pump |
| ALTERNATOR | 12V 76W 6A (standard on electric start models) |
| COOLING SYSTEM | Water-Cooled, Thermostatically Controlled |
| SALTWATER RATED | Yes |
| GEAR RATIO | 2.42:1 CommandThrust Gearcase |
| GEAR SHIFT | Forward-Neutral-Reverse (shift in tiller handle) |
| PROPELLER | CommandThrust 4-Blade High Thrust Aluminum Propeller |
IN THE BOX
- Fuel Tank (3.2 gallon)
- Quick Connect Fuel Line
- Mercury 3-Year Warranty
- 4-Blade Aluminum Prop
- Mercury 4-Stroke Oil
- Owner’s Manual & Tool Kit

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