Mercury 20hp EFI Tiller 4-Stroke Outboards

Mercury 20hp EFI Tiller 4-Stroke Outboards

Meet the Mercury FourStroke 20hp EFI Tiller — the outboard that redefines what a small-engine boating experience should feel like. Engineered from the ground up for anglers, recreational cruisers, and light commercial operators who demand more from every gallon of fuel and every hour on the water, this powerplant combines clean 4-stroke technology with Electronic Fuel Injection to deliver a level of performance, efficiency, and reliability that carbureted 2-strokes simply can't match.

Fuel Efficiency That Pays You Back. Mercury's advanced 4-stroke architecture delivers up to 40% better fuel economy compared to equivalent 2-stroke outboards. Over a full season of regular use, that translates directly into money back in your pocket — and fewer trips to the fuel dock.

Cleaner Running, Cleaner Conscience. This engine exceeds California Air Resources Board (CARB) 3-Star emissions standards and produces 91% lower emissions than comparable 2-stroke outboards. It's one of the cleanest outboard options available today, making it compliant in the most stringent environmental zones in the United States.

EFI Starting — No Priming, No Choking, No Fussing. The battery-free Electronic Fuel Injection system delivers instant, reliable starts regardless of temperature or storage duration. Cold morning on the lake? Extended off-season layup? Simply pull the cord and go. EFI also provides immediate throttle response and precise fuel metering at every RPM, eliminating the flat spots and hesitation common with carbureted engines.

Engineered for Quiet, Vibration-Free Operation. The 4-stroke design eliminates the characteristic rattle and smoke of 2-stroke outboards. Whether you're drifting over a fishing hole or motoring through a no-wake zone, this engine runs smooth, stays quiet, and lets you focus on what matters.

Multifunction Tiller Handle — Command at Your Fingertips. The exclusive Mercury multifunction tiller handle integrates shift control, steering, throttle, throttle friction adjustment, and kill switch into a single, ergonomic unit. One hand controls the entire boat. This is the kind of thoughtful design detail that separates Mercury from the field.

Built to Handle Varying Water Conditions. Manual trim with 5 to 6 positions plus a dedicated shallow-water drive mode means you can optimize performance for flat-water cruising, protected bays, or skinny-water flats fishing. Optional gas-assist and power-trim configurations are available for operators who want even more adaptability.

Protection Systems That Keep You Running. One-stage over-rev protection guards the powerhead under load, while a low oil pressure warning system alerts you before damage can occur. Mercury's decompression system and electronic CD ignition ensure easy starts and consistent ignition performance across all operating conditions.

Propeller Included. Ready to run right out of the box — no need to source a separate prop.

U.S. shipment only.

Key Features

• Engine Type: 4-Stroke with Electronic Fuel Injection (EFI)
• Horsepower: 20hp
• Steering: Multifunction tiller handle with integrated shift, throttle, throttle friction, and stop controls
• Emissions: Exceeds CARB 3-Star standards; 91% lower emissions vs. comparable 2-stroke
• Fuel Efficiency: Up to 40% more fuel-efficient than comparable 2-stroke outboards
• Starting System: Battery-free EFI; electronic CD ignition with decompression system
• Exhaust: Through-prop exhaust
• Dry Weight: 99 lbs.
• Gear Ratios: F-N-R, 2.15:1
• Trim System: Manual tilt with 5–6 positions + shallow-water drive; gas-assist and power-trim options available
• Fuel Tank: External; 3-gallon capacity
• Protection: Over-rev limiter, low oil pressure warning
• Includes: Propeller
• Compliance: Exceeds CARB 3-Star; suitable for most environmentally restricted waterways
• Availability: U.S. shipment only

What's in the Box:

• Mercury FourStroke 20hp EFI Tiller Outboard Motor
• Propeller
• Standard hardware and mounting components

Who This Engine Is For: