Mercury F4 4HP FourStroke Outboard Motor (Lightweight & Easy to Use)

The Mercury F4 delivers Mercury’s reliability and quality in its smallest four-stroke class (above only the 2.5/3.5HP), offering easy operation and maintenance. With 4HP, this engine is great for owners of very small boats who want something more powerful than an electric motor or oars, yet still extremely light and compact. The F4 shares the same robust 123cc engine block as the 5 and 6HP, but tuned to 4HP, which means it runs unstressed and will have a long service life with minimal effort. The weight of about 25 kg is low enough that one person can easily carry the motor to the water or load it into a car trunk. The Mercury F4 has all the essential features: manual trim adjustment with multiple positions (including a shallow-water drive setting), 360° engine rotation for maneuvering (and reverse thrust when needed), and a dependable water-cooling system. For many, this engine is the perfect partner for little adventures – it saves time (starts up instantly), saves money (low fuel use), and frees you from registration hassles.

• Reliable Power for Tiny Boats: With 4 horsepower, the Mercury F4 will steadily move small inflatables up to around 3 meters or hard dinghies (prams, yacht tenders). It’s not meant for high speed, but it provides steady, secure thrust enough to push against a light current or breeze. For lake fishing or shoreline exploring, 4HP is more than sufficient and sips fuel compared to bigger engines.
• Ultra-Easy to Use: The Mercury F4 is made so that any beginner boater can feel confident. The pull start is eased by an automatic decompression mechanism – the engine “turns over” with little resistance. Once running, the controls are intuitive: shift into forward and twist the throttle, very much like a bicycle handle. A neutral gear is provided for safety when starting and idling. The throttle grip has adjustable friction to hold a set speed without constant input.
• Maneuverability and Control: Despite not having a separate reverse gear, the Mercury F4 makes up for it with the ability to rotate a full 360°. This means you can spin the engine around to face backwards and effectively have reverse thrust on demand – convenient for docking or avoiding obstacles. The compact size allows for fine course corrections even in tight waterways. The shallow-water tilt setting protects the prop and engine in very shallow areas.
• Minimal Noise and Vibration: Thanks to its four-stroke cycle and Mercury’s engineering, the F4 runs much quieter than old two-stroke kicker motors. At slow speeds you’ll hear more of the water lapping than the engine itself. This is valuable when observing nature or if you don’t want to scare away fish. Vibration is kept to a minimum – the boat doesn’t rattle and the tiller handle doesn’t buzz in your hand. This reduces fatigue during extended operation.
• Quick Maintenance, Long Life: The Mercury F4 doesn’t burden you with difficult upkeep. Checking the oil takes a minute, and changing it only a few minutes more with no special tools required. The air filter and spark plug are easily accessible for cleaning or replacement. The lack of complex electronics means fewer points of failure – the CDI ignition is sealed and durable. With proper care (oil changes, flushing with fresh water after saltwater use, and off-season fuel conditioning), your Mercury 4HP will fire up every spring like new. And at 4HP, you’ll never need to register it for recreational use, giving you more time to enjoy the water and less time on paperwork.