2023 Mercury 5 HP 20" SHAFT

Reliability, Portability, and Power 



Mercury’s 5hp FourStroke Propane outboard provides more convenience and less hassle. Now you can power your boat with the same propane used for your grill and eliminate the need to haul gasoline. The 5hp FourStroke Propane outboard with a large 123cc displacement offers best-in-class power by delivering a true 5hp.

• Delivering a clean-burning, powerful and easy-to-operate portable outboard: With just 63.1 pounds (28.6 kilograms) the 5hp Propane FourStroke is light and easy to carry or transport. You can run it on the same conventional propane you’re probably using in your backyard grill, so there’s no gasoline to haul with the engine.
• Sail Power: Sail Power models are designed for sailboats and feature an alternator and more thrust to control larger boats.

• HP: 5 HP (3.7 kW)
• Displacement: 7.5 CID (123 cc)
• Engine type: 1 cylinder
• Full throttle: 5000-6000 RPM
• Fuel induction system: 2-valve pushrod (overhead valve)
• Alternator: 4 amp (50 watt) lighting and charging
• Recommended oil: Mercury FourStroke Oil 10W-30
• Engine protection operator warning system: Low oil pressure; Over-rev
• Starting: Manual
• Steering: Tiller
• Shaft length: 20" (508 mm)
• Gearcase ratio: 2.15:1
• Dry weight *Lightest model available: 63.1 lbs (28.6 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: Propane Mixer
• Propane Tolerance: HD-5 (65% or greater propane)
• Cooling system: Water-cooled with thermostat
• Gear shift: F-N-R
• Gearcase options: Sail Power
• Trim positions: 6
• Exhaust system: Through prop
• Shallow water drive: Yes
• Shallow water trim range: 16 deg.
• Integrated fuel tank: Not included
• Remote fuel tank: Optional, Not included
• Color: Phantom Black