Mercury 9.9 HP ELH EFI Outboard Motor

Original price was: $3,555.00.Current price is: $3,179.00.

Mercury Outboards
Brand: Mercury Outboards

HP: 9.9
Starter Type: Electric

Shaft Length: 20″ (Long Shaft)
Electronic Fuel Injection (EFI)

 

The Mercury 9.9 horsepower electric start outboard motor with a 20″ shaft and Electronic Fuel Injection (EFI) offers powerful and reliable performance for various small to medium-sized boats. Its electric start ensures easy ignition, while the EFI system provides efficient fuel consumption and smooth operation. The 20″ shaft is ideal for deeper transoms, delivering enhanced control and performance. This compact and durable outboard motor is perfect for fishing boats, tenders, and other watercraft, combining convenience and power in a user-friendly package.

At Plateau Marine / OutboardDirect.com, we believe in clear, upfront pricing.

Dealer Prep: Included
Full Mercury Factory Warranty valid at any authorized Mercury Dealer Nationwide.
Freight: Free within the 48 states, Includes residential delivery with hydraulic lift gate service Some exclusions may apply, call for details

In stock

Mercury 9.9 Horsepower Electric Start 20" Shaft EFI Outboard Motor

The Mercury 9.9 horsepower electric start outboard motor with a 20" shaft and Electronic Fuel Injection (EFI) system is the perfect blend of power, efficiency, and convenience. Designed for a range of small to medium-sized boats, this motor delivers reliable performance, easy handling, and modern fuel technology, making it an excellent choice for fishing, cruising, and recreational boating.

Key Features:

  1. Powerful and Efficient: The 9.9 HP engine offers a strong power output, providing excellent acceleration and top-end speed for a variety of watercraft, including fishing boats, tenders, and small pontoons. The advanced EFI system optimizes fuel-air mixture, ensuring maximum efficiency and reduced fuel consumption, which translates to longer trips and lower costs.
  2. 20-Inch Shaft Length: The 20-inch shaft is designed to accommodate deeper transoms, ensuring the propeller remains properly submerged for optimal thrust and control. This length is ideal for boats with higher transoms, providing better performance in various water conditions.
  3. Electronic Fuel Injection (EFI): Mercury's EFI technology offers several advantages over traditional carbureted systems. It ensures easier starts, smoother idling, and more consistent performance. The EFI system automatically adjusts the fuel-air mixture for optimal combustion, improving fuel efficiency and reducing emissions. This technology also enhances throttle response and overall engine performance.
  4. Electric Start: The electric start feature provides quick and effortless ignition, making it easy to get underway without the hassle of manual starting. This convenience is particularly beneficial in cold weather or after long periods of storage, ensuring a reliable start every time.
  5. Durable and Reliable: Built with high-quality materials and Mercury's renowned engineering, this outboard motor is designed for durability and long-lasting performance. The robust construction and corrosion-resistant components are ideal for marine environments, offering protection against saltwater and harsh conditions.
  6. Quiet and Smooth Operation: The EFI system not only improves efficiency but also contributes to quieter and smoother engine operation. This makes the Mercury 9.9 HP motor a great choice for anglers and recreational boaters who appreciate a quiet and comfortable experience on the water.
  7. User-Friendly Controls: The motor features intuitive controls that are easy to use, providing precise handling and maneuverability. The control setup is designed to be accessible, even for novice boaters, ensuring a stress-free experience.
  8. Portability and Compact Design: Despite its powerful performance, the Mercury 9.9 HP outboard is compact and lightweight, making it easy to transport, install, and store. Its compact design does not compromise on power, offering a perfect balance of portability and performance.
  9. Low Maintenance: The EFI system and durable construction reduce the need for frequent maintenance and adjustments. The engine's design simplifies routine checks and maintenance tasks, allowing you to focus more on enjoying your time on the water.
  10. Versatile Applications: This outboard motor is versatile and suitable for a wide range of boating activities, including fishing, cruising, and more. Its reliable performance and advanced features make it a valuable addition to any boat, whether used as a primary motor or auxiliary power.

The Mercury 9.9 horsepower electric start outboard motor with a 20" shaft and EFI system offers an exceptional combination of power, efficiency, and convenience. Whether you're exploring new fishing spots, cruising along the coastline, or enjoying a leisurely day on the lake, this motor delivers reliable performance and a smooth, enjoyable boating experience. Its advanced technology, user-friendly features, and durable construction make it a top choice for boaters seeking a high-quality, versatile outboard motor.

Free Shipping (*excludes AK & HI) Residential Delivery and Lift Gate Service are included with the Free Delivery Offer.

Additional services from the freight carrier, (i.e. island delivery, airport delivery, ferry required for delivery) Will incur a charge from the freight carrier that will not be included with the free freight offer.

Additional information

Horsepower

9.9 HP

Shaft Length

20" (Long)

Starter Type

Electric

Tilt & Trim

Manual

Brand

Mercury Marine

Manufacturer

Mercury Marine

Color

Phantom Black

FEATURES

  • Electronic Fuel Injection (EFI)
  • Compact and Lightweight 97 lbs.
  • 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
  • Auto Ratchet Trim System (5 positions)
  • Shallow Water Drive
  • 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 Mercury Outboard 9.9ELH EFI
MODEL YEAR 2026
SKU 1A10311LK
WEIGHT 97.0 lb
MANUFACTURER Mercury Marine
COUNTRY OF MANUFACTURE Japan
HORSEPOWER 9.9 HP
SHAFT LENGTH 20″ (Long)
STEERING Tiller
STARTING Electric
TRIM & TILT Manual
FUEL DELIVERY Electronic Fuel Injection (EFI)
FUEL TANK External
CYLINDER(S) 2
DISPLACEMENT 209 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 2.08:1
GEAR SHIFT Forward-Neutral-Reverse (shift in tiller handle)
PROPELLER 8.5″ Diameter X 8.0″ Pitch 3-Blade Aluminum

IN THE BOX

  • Fuel Tank (3.2 gallon)
  • Quick Connect Fuel Line
  • Mercury 3-Year Warranty
  • Aluminum Propeller
  • Mercury 4-Stroke Oil
  • Owner’s Manual & Tool Kit

SHAFT LENGTH GUIDELINES