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2017 Mercury 2.5MH FourStroke 2.5 HP - 15 in. Shaft

Handheld Reliability

Portable power and thrust for exact operation.


Lightweight: Weighing just 38 and 57 pounds, respectively, our 2.5 - 3.5hp and 4 - 6hp FourStroke outboards are easy to lift and carry.

Shallow Water: Multiple trim positions enhance performance and enable shallow-water operation.

Easy to Start: Automatic decompression bleeds off cylinder pressure to reduce the pulling force required to start the engine.

Precise Control: Mercury 2.5 and 3.5hp FourStroke engines feature neutral-forward shifting with 360-degree steering for full thrust in all directions.


HP / kW: 2.5 / 1.9

Engine type: 1 cylinder

Displacement (CID/CC): 5.2 / 85

Full throttle RPM: 4500-5500

Fuel induction system: 2-valve pushrod (overhead valve)

Recommended fuel: 87 octane compatible (up to 10% ethanol)

Recommended oil: Mercury FourStroke Oil 10W-30

Engine protection operator warning system: Over-rev

Starting: Manual

Steering: Tiller with 360° turning

Shaft length: 15 in. / 381 mm

Gearcase ratio: 2.15:1

Dry weight *Lightest model available: 38 lb. / 17 kg

CARB star rating: 3

Bore and stroke: 2.16 x 1.42 in. / 55 x 36 mm

Ignition: CDI w/electronic spark advance

Fuel system: Carbureted

Cooling system: Water-cooled with thermostat

Gear shift: F-N

Gearcase options: Standard

Trim system: 4 position

Trim positions: 4

Exhaust system: Above prop

Shallow water trim range (degrees): 16

Color: Phantom Black


Dry weight based on lightest model available.


2017 Mercury 2.5MH FourStroke 2.5 HP - 15 in. Shaft

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