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Mercury Marine 5MH Propane FourStroke
Mercury Marine 5MH Propane FourStroke

Specs

General Information

Manufacturer
Mercury Marine
Mercury Marine
Model
5MH Propane FourStroke
5MH Propane FourStroke
Model Code
1FP5201EK
1FP5201EK
Color
Phantom Black
Phantom Black

Engine

Cylinders
1
1
Ignition
CDI with electronic spark advance
CDI with electronic spark advance
Starting
Manual
Manual
Exhaust
Through prop
Through prop

Measurements

Power
5 Horsepower
5 Horsepower
Displacement
123 Cubic Centimeter
123 Cubic Centimeter
Bore x Stroke
2.32 x 1.77 in. (59 x 45 mm)
2.32 x 1.77 in. (59 x 45 mm)
Shaft Length
15"
15"
Dry Weight
59.5 lbs
59.5 lbs

Operational

Steering
Tiller
Tiller
Fuel Type
Unleaded
Unleaded
Full Throttle RPM Range
5,000 - 6,000
5,000 - 6,000
Fuel Induction

2-valve pushrod (overhead valve)

Fuel system - Propane mixer

2-valve pushrod (overhead valve)

Fuel system - Propane mixer

Lubrication
Recommended oil - Mercury FourStroke Oil 10W-30
Recommended oil - Mercury FourStroke Oil 10W-30
Cooling
Water-cooled with thermostat
Water-cooled with thermostat
Gear Ratio
2.15:1
2.15:1
Gear Shift

F-N-R

Gearcase options - Standard

F-N-R

Gearcase options - Standard

Trim System

6 position

Shallow water drive

Shallow water trim range - 16°

Trim & tilt - Manual

6 position

Shallow water drive

Shallow water trim range - 16°

Trim & tilt - Manual

Instrumentation
Engine protection operator warning system - Low oil pressure, Over-rev
Engine protection operator warning system - Low oil pressure, Over-rev
Propeller
Yes
Yes

Features

Features

  • CARB star rating - 3
  • Propane tolerance - HD-5 (65% or greater propane)

FourStroke Advantage

  • COMFORT: With a balanced powerhead and sophisticated, vibration-dampening cowl design, Mercury FourStroke outboards deliver an exceptionally smooth and quiet ride at any speed.
  • DURABILITY: Premium corrosion-preventive technologies and durable components ensure FourStroke outboards can stand up to the most demanding marine environments.
  • COMPACT DESIGN: Ideal for new engine setups or repowers, the slender width of a Mercury FourStroke outboard fits most transoms, including those with narrow engine wells and tight motor spacing.
  • EFFICIENCY: Explore farther and stay out longer thanks to impressive power-to-weight ratios, intelligent fuel systems and optimized fuel injection (on most models) that maximize performance from every drop of fuel.

FourStroke Performance

  • EXPLORE FARTHER: A single 20-pound (5-gallon) propane tank can fuel the 5hp Propane outboard for approximately six hours at full throttle.
  • ECO-FRIENDLY PERFORMANCE: Mercury 5hp Propane outboards produce 25% lower exhaust emissions than comparable gasoline-powered outboards.
  • LIGHT & POWERFUL: Enjoy true 5hp performance, all in a package that starts as light as 59.5 pounds – ideal for powering compact jon boats, inflatables and other small boats.

Intuitive, Innovative Features

  • CLEAN, POWERFUL PERFORMANCE: With its 123cc powerhead, the Mercury Propane outboard offers impressive power by delivering a true 5hp on an alternative clean-burning fuel.
  • EASY OPERATION: With a pressurized fuel system, there’s no fuel priming required, so you can be ready to go as soon as you connect the propane. And with manual choke, you’ll enjoy fast, easy starts, even when the engine is cold.
  • PORTABILITY & CONVENIENCE: Simple to install and lightweight, a portable Mercury Propane outboard lets you power your adventures with the same propane used for your grill, eliminating the need to haul gasoline. It’s perfect for keeping at a lake house or as secondary propulsion stored on board a larger vessel.
  • SECONDARY POWER FOR SAILBOATS: The 5hp Propane outboard comes in a Sail Power model that features a longer shaft, a high-thrust prop to control larger boats and a 12-volt, 4-amp/50-watt alternator.
  • SAFETY ENHANCEMENTS: The fuel hose connector threads quickly and easily to the outboard, while propane auto shut-off valves on the engine and in the fuel-hose connector enhance safety on the water.

Warranty & Maintenance

  • WARRANTY COVERAGE: Mercury makes world-class marine products backed by world-class warranties.
  • MAINTENANCE: At Mercury, we make maintenance easy. Learn more about how to keep your Mercury products performing at their peak.

Features

  • CARB star rating - 3
  • Propane tolerance - HD-5 (65% or greater propane)

FourStroke Advantage

  • COMFORT: With a balanced powerhead and sophisticated, vibration-dampening cowl design, Mercury FourStroke outboards deliver an exceptionally smooth and quiet ride at any speed.
  • DURABILITY: Premium corrosion-preventive technologies and durable components ensure FourStroke outboards can stand up to the most demanding marine environments.
  • COMPACT DESIGN: Ideal for new engine setups or repowers, the slender width of a Mercury FourStroke outboard fits most transoms, including those with narrow engine wells and tight motor spacing.
  • EFFICIENCY: Explore farther and stay out longer thanks to impressive power-to-weight ratios, intelligent fuel systems and optimized fuel injection (on most models) that maximize performance from every drop of fuel.

FourStroke Performance

  • EXPLORE FARTHER: A single 20-pound (5-gallon) propane tank can fuel the 5hp Propane outboard for approximately six hours at full throttle.
  • ECO-FRIENDLY PERFORMANCE: Mercury 5hp Propane outboards produce 25% lower exhaust emissions than comparable gasoline-powered outboards.
  • LIGHT & POWERFUL: Enjoy true 5hp performance, all in a package that starts as light as 59.5 pounds – ideal for powering compact jon boats, inflatables and other small boats.

Intuitive, Innovative Features

  • CLEAN, POWERFUL PERFORMANCE: With its 123cc powerhead, the Mercury Propane outboard offers impressive power by delivering a true 5hp on an alternative clean-burning fuel.
  • EASY OPERATION: With a pressurized fuel system, there’s no fuel priming required, so you can be ready to go as soon as you connect the propane. And with manual choke, you’ll enjoy fast, easy starts, even when the engine is cold.
  • PORTABILITY & CONVENIENCE: Simple to install and lightweight, a portable Mercury Propane outboard lets you power your adventures with the same propane used for your grill, eliminating the need to haul gasoline. It’s perfect for keeping at a lake house or as secondary propulsion stored on board a larger vessel.
  • SECONDARY POWER FOR SAILBOATS: The 5hp Propane outboard comes in a Sail Power model that features a longer shaft, a high-thrust prop to control larger boats and a 12-volt, 4-amp/50-watt alternator.
  • SAFETY ENHANCEMENTS: The fuel hose connector threads quickly and easily to the outboard, while propane auto shut-off valves on the engine and in the fuel-hose connector enhance safety on the water.

Warranty & Maintenance

  • WARRANTY COVERAGE: Mercury makes world-class marine products backed by world-class warranties.
  • MAINTENANCE: At Mercury, we make maintenance easy. Learn more about how to keep your Mercury products performing at their peak.