2026 Mercury 4 HP 4MH Outboard Motor

This new 2026 Mercury 4 HP 4MH outboard is a compact, single-cylinder portable built for small fishing boats, small inflatables, and sailboat auxiliary power. It carries a short 15-inch shaft, manual start, and tiller steering, weighing in at 55.0 lbs. Built around portability An internal fuel tank keeps the whole unit self-contained for carrying to and from a dock, while an external fuel-line connector lets you add a remote tank when you want more range. A built-in carry handle makes moving the engine between boat and vehicle straightforward. Construction and running gear Saltwater-ready details run through the whole design: a stainless water pump housing, zinc-coated water passages, and sacrificial anodes guard against corrosion, wrapped in marine-grade alloy castings. Underneath, CDI ignition with spark advance drives a 2.15:1 gearset, shifting forward-neutral-reverse from a lever mounted up front for easy reach. Does it include a propeller? Yes, this one comes with a 3-blade aluminum prop already fitted. What's the warranty on this engine? Mercury Marine's 3-year warranty. Being sold new and manufactured in Japan, this motor arrives with an owner's manual, a tool kit, and Mercury 4-stroke oil, ready to mount and run. First-time buyers of a small portable like this should budget a few extra minutes for break-in before loading it down with a full fuel tank. Specifications MODEL 1F04201KK MODEL YEAR 2026 SKU 4MH-26 MANUFACTURER Mercury COUNTRY OF MANUFACTURE Japan HORSEPOWER 4hp WEIGHT 55.0 SHAFT LENGTH 15″ (Short) STEERING Tiller STARTING Manual TRIM & TILT Manual FUEL DELIVERY Carburetor FUEL TANK Internal CYLINDER(S) 1 DISPLACEMENT 7.5/123 BORE AND STROKE 2.32 x 1.77 FULL THROTTLE RPM RANGE 4500-5500 IGNITION SYSTEM CDI INDUCTION SCAVENGING OHV VALVES PER CYLINDER 2 FUEL TYPE 87 Octane (up to 10% ethanol content) FUEL TANK / FUEL LINE 0.3 US Gallon (1.15 liter) internal tank with external connector OIL TYPE SAE 10W-30 (Mercury 4-Stroke Outboard Oil) OIL CAPACITY 15 fl. Oz. (450 ml) LUBRICATION Pressurized wet sump ALTERNATOR Optional 12V 50W 4A (installation required) COOLING SYSTEM Water-cooled w/thermostat SALTWATER RATED Yes GEAR RATIO 2.15:1 GEAR SHIFT Forward-Neutral-Reverse (forward mounted shift lever) PROPELLER 7.7″ Diameter X 7.0″ Pitch 3-Blade Aluminum