This lightweight motor features through-prop exhaust for extra-quiet operation. Great for aluminum tiller, inflatable soft hull, jon, utility, and sail boats.


HP / kW: 4 / 2.9
Engine type: 1 cylinder
Displacement (CID/CC): 7.5 / 123
Full throttle RPM: 4500-5500
Fuel induction system: 2-valve pushrod (overhead valve)
Recommended fuel: Unleaded 90RON minimum
Recommended oil: Mercury FourStroke Oil 10W-30
Engine protection operator warning system: Low oil pressure. Over-rev
Starting: Manual
Steering: Tiller
Shaft length: 15" / 381 mm. 20" / 508 mm
Gearcase ratio: 2.15:1
Dry weight *Lightest model available: 25 kg
CARB star rating: 3
Bore and stroke: 2.32 x 1.77" / 59 x 45 mm
Ignition: CDI w/electronic spark advance
Fuel system: Carbureted
Cooling system: Water-cooled with thermostat
Gear shift: F-N-R
Gearcase options: Standard
Trim positions: 6
Exhaust system: Through prop
Shallow water drive: Yes
Shallow water trim range (degrees): 16
Integrated fuel tank (gal / L): 0.3 / 1.1
Optional fuel tank (gal / L): 3.2 / 12
Color: Phantom Black

Mercury 4hp Outboard Engine

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  • Please note: All outboard motors undergo a Pre-Delivery Inspection (PDI). Inspected and tested to ensure that they run as they should prior to them being shipped. After each test the engine oil is drained as it can leak in transit. You must fill with the correct type and amount of oil before you run your motor.

  • There is a delivery charge of £55 for this product to Mainland UK.

    Please contact us for shipping cost if adding extra items