From the moment you crank the engine to the moment you drop the throttle, EFI technology (on 8 and 20hp outboards) responds with instant power. Surefire starting in all weather conditions. Smooth, efficient acceleration. Maximum fun.
四冲程 2.5-20马力
Mercury FourStroke 舷外机旨在探索无法抵达的区域。让长途航程轻松愉悦。2.5-20hp 的 FourStroke 舷外机使您能够根据自己的日程享受水上乐趣，到达其他发动机无法企及的地方。它们可靠、紧凑、轻便、易于安装且易于操作，同时还能实现快速加速，带来令人难忘的速度。万事俱备，向着目的地出发吧！
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Learn more about how Mercury makes great days on the water possible.
Intuitive, Innovative Features
Electronic Fuel Injection (EFI)
Advanced Tiller
With a range of adjustments, easy-to-reach controls and the flexibility to be set up for left- or right-handed operation (on select models), Mercury tiller handles put you in complete command of your adventures.
Battery-Free EFI
Go farther, confidently, with battery-free EFI technology. Included with manual-start 8 to 20hp outboards, it lets you enjoy the flexibility of portability, without needing to bring along a cranking battery.
Easy Portability
Simple to install and lightweight, 2.5 to 20hp FourStroke outboards let you bring along the fun wherever it’s needed.
Convenient Maintenance
We made maintenance easier with features like a no-spill oil change system, easy-out fuel filter and lifetime maintenance-free valve train
Fourstroke Performance
Flexible, Versatile Power
A variety of remote and tiller controls, manual and electric start, and power or manual trim (options vary by horsepower) let you set up your engine to match your boat and favorite on-water activities.
Small but Mighty
With their high torque and rugged durability, Mercury portable outboards are ideal for powering a range of johnboats, small aluminum fishing boats and rigid inflatables, as well as for secondary power on sailboats.
Lighter by Design
Proprietary alloys and advanced cowl materials allow Mercury FourStroke outboards to deliver heavyweight performance in a lightweight package.
FourStroke Advantage
Comfort
With a balanced powerhead and sophisticated, vibration-dampening cowl design, Mercury FourStroke outboards deliver an exceptionally smooth and quiet ride at any speed.
Durability
Premium corrosion-preventive technologies and durable components ensure FourStroke outboards can stand up to the most demanding marine environments.
Compact Design
Ideal for new engine setups or repowers, the slender width of a Mercury FourStroke outboard fits most transoms, including those with narrow engine wells and tight motor spacing.
Efficiency
Explore farther and stay out longer thanks to impressive power-to-weight ratios, intelligent fuel systems and optimized fuel injection (on most models) that maximize performance from every drop of fuel.
Engine Specifications by Horsepower
Warranty & Maintenance
Limited Warranty
World-class marine products backed by world-class warranties. We stand behind everything we build, and we go the extra mile to make sure your Mercury experience is the best it can be – on the water and off.
Mercury Product Protection
Mercury Product Protection is an extended service contract for your Mercury engine that covers certain expenses caused by defects in materials and workmanship after the Mercury Limited Warranty expires.
Maintenance
Whether you keep your outboard at a remote outpost or in your garage, we’ve made maintenance easier. Our maintenance-free camshaft requires no regular service and no valve leash adjustments. Ever. For the life of the engine. Changing crankcase and gearcase oil is a snap, too. The oil-filter drip tray (on EFI models) and easy-drain design minimize messes. And the gear lube will fully drain from any tilt position. Less hassle leaves more time for fun.
Resources for you
Brochures
Take a deeper dive into what makes Mercury FourStroke outboards stand apart with detailed information on each engine and the features that make them unique.
The best products have the best dealers
When you make the best marine products in the world, you want the best dealers behind them. That’s why we ensure that Mercury dealers are the best equipped to sell and service our products. Your Mercury Authorized Dealer is the place to see and purchase Mercury engines as well as genuine Mercury Precision Parts® and accessories. And with thousands of dealers, you can rest assured we’re always close by and ready to help you Go Boldly®.