Mercury 2.5-hp Portable Outboard Specifications Propshaft Horsepower: 2.5-hp (1.9 kW) Max RPM (W.O.T.): 4000-5000 Cylinders/Configuration: 1 Displacement: 4.6 cu.in. (74.6cc) Bore & Stroke: 1.85 in. x 1.69 in. (47mm x 43mm) Fuel Induction System: Loop Charged Exhaust System: Above-prop Lubrication System: Pre-mix 50:1 Cooling System: Water cooled Ignition System: Capacitor Discharge Starting System: Manual Gear Ratio: 1.85:1 Gear Shift: Constant Forward Steering: Tiller (360 degree steering) Trim Positions: 4 Shaft Length: 15 in. (381mm) Integral Fuel Tank: 1.5 qts. (1.4 L) Weight-Dry: 28.5 lbs. (13 kg) Standard propeller: Plastic 3 x 7 3/8"x 6" Propeller Options: Black Max Priced at $632.00!

Full Size Mercury Outboard Models

Four Stroke Mercury Outboards

Small Size Mercury Outboards

Model Horsepower
2.5 hp
3.3 hp
4 hp
5 hp
6 hp
8 hp
9.9 hp
15 hp
20 hp
25 Classic
30 hp
40 hp Classic 3 Cylinder
40 hp

For small outboard power, there's nothing quite like a
Mercury portable, from 2.5 to 5 horsepower. Even though
they're packed with features, they're portable enough to take anywhere.

All Portable models feature: One cylinder
Water-cooled cooling system
Capacitor discharge ignition (CDI)
Manual starting
Tiller handle (360°) steering
Run on unleaded 87 octane (minimum) fuel
Integral Fuel Tank


6.0 H.P. and up are not considered to be "portables".