Mercury 2.5-3.5 HP Fourstroke Outboards
![]() | A Weight Off Your ShouldersOur 2.5 and 3.5 hp FourStrokes may be small, but they're filled with big ideas. Both engines feature thriller steering that rotates 360 degrees and a twist grip throttle for maximum maneuverability and convenient one-handed control. Plus, a clearly visible sight guage makes it easy to monitor and maintain a proper oil level. |
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Features | |
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Mercury FourStroke Outboards | 2.5 HP | 3.5 HP |
| HP @ Prop | 2.5 | 3.5 |
| kW @ Prop | 1.9 | 2.6 |
| Max RPM (WOT) | 5000-6000 | 5000-6000 |
| Cylinders | 1 | 1 |
| Displacement (CID/cc) | 5.2 / 85 | 5.2 / 85 |
| Bore & Stroke (in) | 2.16 x 1.42 | 2.16 x 1.42 |
| Bore & Stroke (mm) | 55 x 36 | 55 x 36 |
| Cooling System | Water-cooled w/thermostat | Water-cooled w/thermostat |
| Ignition System | CDI w/electric spark advance | CDI w/electric spark advance |
| Starting | Manual | Manual |
| Gear Ratio | 2.15:1 | 2.15:1 |
| Gear Shift | F-N | F-N |
| Steering | Tiller with 360° turning | Tiller with 360° turning |
| Trim Positions | 4 | 4 |
| Exhaust System | Above prop | Above prop |
| Lubrication System | Splash | Splash |
| Recommended Oil | Mercury 4-Stroke Outboard Oil | Mercury 4-Stroke Outboard Oil |
| Oil Capacity | 300 mL / 10 oz | 300 mL / 10 oz |
| Fuel Induction System | 2-valve single overhead cam | 2-valve single overhead cam |
| Integral Fuel Tank (Gal) | 0.3 | 0.3 |
| Integral Fuel Tank (L) | 0.95 | 0.95 |
| Shaft Length (inches) | 15 | 15 / 20 |
| Shaft Length (mm) | 381 | 381 / 508 |
| Dry Weight (lbs.) | 38 | 38 |
| Dry Weight (kg) | 17 | 17 |
| Available Propellers | Standard equipment | Standard equipment |
| CARB Star Rating | 3 | 3 |
| Warranty | 3 years | 3 years |




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