Mercury 20HP F20 4-Stroke Long Shaft Outboard Motor F20 MLH EFI

Mercury 20HP F20 4-Stroke Long Shaft Outboard Motor

Mercury 20HP F20 4-Stroke Long Shaft Outboard Motor are  quite simply, the benchmark in its class.  Whether you’re powering a lightweight RIB, a dory, or looking for a dependable sail-drive companion, this engine delivers modern fuel-injected performance in a package that won’t break your back.

The standout feature of this 20hp model is its Battery-Free Electronic Fuel Injection (EFI). For the boater, this means no more struggling with a carburettor on cold mornings. It starts first time, every time, providing crisp throttle response and remarkable fuel economy. Because it's battery-free, you get the benefits of EFI technology even with a manual start, saving you the weight and maintenance of a dedicated starting battery.

The "MLH" designation signifies this is a Long Shaft (20"), Manual Start, with Mercury’s legendary Multi-Function Tiller handle.

Mercury 20HP F20 4-Stroke Long Shaft Outboard Motor Key Features

• Ambidextrous Multi-Function Tiller: This isn't just a handle; it's a control centre. It’s the first of its kind to offer true ambidextrous operation. You can adjust the horizontal angle, tilt, and even the throttle grip rotation to suit your driving hand and seating position.

• Ultralight Engineering: Weighing in at just 45kg (lightest model), this engine is one of the lightest 20hp four-strokes on the market. It’s 13% lighter than the previous generation, making it significantly easier to mount and transport.Low-Vibration Twin Cylinder: The new powerhead design includes advanced engine mounts that soak up vibration, ensuring a smooth ride that won’t leave your hand tingling after a long stint at the helm.

• Maintenance Made Simple: Mercury has designed this with the owner in mind. It features a "no-spill" oil change system, an easy-access fuel filter, and a lifetime maintenance-free valve train.Superior Corrosion Protection: Built to withstand the harsh UK salt-water environment, it uses Mercury's proprietary low-copper aluminium alloys and multi-step paint process.

Technical Specifications:

• • Horsepower: 20 HP (14.7 kW)
  • Engine Type: Inline 2-Cylinder
  • Displacement: 333 cc
  • Shaft Length: 20" (508 mm) -Long Shaft
  • Starting: Manual (Recoil)
  • Fuel System: Electronic Fuel Injection (EFI)Weight: Approx. 45 kg
  • Full Throttle: RPM5700 – 6200
  • Gear Shift: Forward - Neutral - Reverse (F-N-R)
  • Fuel Tank: 12L External Tank (Included)

The Mercury F20 MLH is the ultimate 'fit and forget' portable engine. It offers the torque of a larger engine with the portability of a small one. If you want an engine that starts on the first pull and runs like a dream, this is it."

Mercury 20HP F20 4-Stroke Long Shaft Outboard Motor FAQs

What are the main benefits of the Electronic Fuel Injection (EFI) on this 20HP model?

The battery-free EFI system is a game-changer for portable outboards. It ensures easy, reliable starting—whether the engine is hot or cold—and provides incredibly crisp throttle response. Because it is battery-free, you enjoy all the benefits of modern fuel injection without the added weight or maintenance of an external starting battery.

What does 'MLH' stand for in the product name? In Mercury's coding:

M stands for Manual Start.

L signifies a Long Shaft (20 inches / 508mm).

H indicates a Tiller Handle control. This configuration is ideal for boats with a taller transom that require manual operation from the stern.

How heavy is this engine , Is it truly portable?

Yes, this model is designed with portability in mind. Weighing approximately 45kg, it is one of the lightest 20hp four-strokes available. Its compact design and ergonomic carry handles make it significantly easier to transport and mount than previous generations.

Can I adjust the tiller handle to suit my driving style?

Absolutely. This engine features Mercury’s award-winning multi-function tiller handle. It is the first of its kind to offer true ambidextrous operation, allowing you to adjust the horizontal angle and even the throttle grip rotation to suit whether you are left- or right-handed.

Is this engine suitable for saltwater use?

Yes. Like all Mercury outboards, the F20 is built to withstand harsh marine environments. It utilizes proprietary low-copper aluminium alloys and a multi-step painting process to provide industry-leading corrosion resistance.

How quiet is the engine during operation?

Mercury has engineered this twin-cylinder powerhead with advanced engine mounts that soak up vibration. This results in a remarkably smooth and quiet ride, allowing for easy conversation on board even at higher speeds.

What maintenance is required for the Mercury 20HP EFI?

Maintenance is straightforward and designed for the owner to manage easily. It features a "no-spill" oil change system and an easy-access fuel filter. Additionally, the valve train is designed to be maintenance-free for the life of the engine.

Does it come with a fuel tank?

Yes, the F20 MLH EFI comes as standard with a 12-litre external fuel tank and the required fuel line, so you are ready to hit the water almost immediately.

What kind of warranty coverage will I receive?

When you purchase through Morgan Marine, your engine is backed by Mercury’s comprehensive factory warranty. This typically includes a three-year limited warranty, with the potential for further extension through Mercury Product Protection™, plus an industry-exclusive three-year corrosion warranty.

If you have any further questions regarding fitting this engine to your boat, please contact the Morgan Marine team today. We are here to help you get the best performance out of your vessel.