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Water&WindIndependent
since 2019
Mercury

FourStroke 2.5

Outboard · Petrol

Specifications

Power
2.5 hp
Power (kW)
1.8 kW
Cylinders
1
Displacement
85 cc
Weight
17 kg
Rated rpm
5,500 rpm
Shaft length
Short shaft
Start
Manual start
Fuel tank
Integrated, 1,1 l
Steering
Tiller
Trim/tilt
Manual tilt
Fuel
Petrol
Mounting
Outboard

Boats with this engine

Boats on which the Mercury FourStroke 2.5 is available as standard or as an option, as stated by the builder.

Explainer

Which shaft length do I need?

The shaft length must match the transom height of your boat: the height of the transom, measured from the top to the bottom of the hull.

  1. 1

    Measure your transom

    Measure the transom height in the middle of the transom, straight down to the bottom of the hull.

  2. 2

    Compare with the engine

    For each shaft length the manufacturer states which transom height it is meant for. Choose the shaft that matches.

  3. 3

    Too short or too long?

    Too short: the propeller draws in air and cooling works poorly. Too long: more drag and less speed. In doubt, ask the builder or a dealer.

Other engines from Mercury

All Mercury engines →
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Avator 20e

ElectricOutboard

3 hp · 2.2 kW · 22 kg · Short shaft, long shaft, extra long shaft

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Avator 35e

ElectricOutboard

5 hp · 3.7 kW · 21 kg · Short shaft, long shaft, extra long shaft

Mercury

FourStroke 115

PetrolOutboard

115 hp · 84.6 kW · 163 kg · Long shaft, extra long shaft

For sale via a dealer