
Mercury 8MLH 8HP – Four Stroke 20-Inch Manual Tiller
The Mercury 8MLH links an 84-pound manual-start 208cc twin-cylinder engine with a 2.08:1 gear ratio, built for quiet utility navigation on a 20-inch shaft.
- 208cc SOHC block delivers 8hp output
- Manual recoil start requires zero battery
- 2.08:1 gear ratio maximizes water thrust
- 20-inch shaft fits deep utility transoms
Mercury 8MLH 8HP FourStroke Tiller
The Mercury 8MLH is an advanced 8HP FourStroke outboard engineered for high-transom auxiliary propulsion and manual starting reliability in the North American maritime sector. Utilizing a robust 208cc inline 2-cylinder SOHC architecture and weighing 91 lbs, this engine offers superior smoothness and mechanical dependability. This 20-inch long shaft model is configured with a manual tiller handle, making it the ideal auxiliary match for sailboats and high-transom utility skiffs. Our dependable marine outboard engines deliver the refined performance needed for precision harbor maneuvers and coastal navigation.
Operational peak performance for this Mercury 8HP occurs across the 5000 to 6000 RPM range. The 2.08:1 gear ratio provides a distinct mechanical advantage, translating the twin-cylinder torque curve into consistent thrust for displacement hulls. Manufactured in the USA, this corrosion-resistant motor features CDI ignition with Electronic Spark Advance to helps support a quiet, comfortable ride during long days navigating American coastal estuaries and inland lakes.
Twin-Cylinder 208cc Advantage
The 208cc twin-cylinder platform maximizes combustion efficiency and eliminates the vibration common in smaller portable engines. This proven design delivers the smooth, reliable low-end torque required to push heavily loaded sailboats and high-transom utility vessels through strong tidal currents and unpredictable coastal chop in the American saltwater environment.
Long Shaft Auxiliary Match
The 20-inch long shaft is the defining feature of this model, designed to reach deeper water from high-transom mounting points on sailboats. This configuration prevents propeller ventilation in choppy conditions and helps support consistent hydrodynamic grip, providing the captain with safe, predictable boat control during harbor transits and motor-sailing.
Mechanical Simplicity
For boaters who prioritize reliability without a battery, the manual start 8MLH offers pure mechanical confidence. It is a practical “get home” engine for sailboats, providing a powerful yet compact backup that is easy to maintain and deploy in seconds when the wind fails or conditions deteriorate.
Mercury Factory Warranty
Every portable Mercury 8HP unit is backed by a comprehensive 3-Year Limited Warranty for American owners. This factory-level protection helps support long-term peace of mind and grants access to genuine parts through a vast nationwide marine dealer service network, reflecting a commitment to quality and durability.
Maintenance & Longevity
Maintaining clean oil in the 0.8L pressure lubrication system is vital for preserving the engine’s tight mechanical tolerances. Always flush the cooling system with fresh water after every saltwater mission.Maintenance note: Follow the manufacturer’s service procedures and lubrication specifications for the engine and gearcase.
Product Specifications
MERCURY 8MLH Full Specs
| Engine type | Inline 2-Cylinder SOHC |
|---|---|
| Displacement | 208 cc (12.8 cu in) |
| Bore x stroke | 55 x 44 mm (2.16 x 1.73 in) |
| Horsepower | 8hp @ 5500 RPM |
| Full-throttle rpm range | 5000 - 6000 RPM |
| Compression ratio | N/A |
| Fuel induction | 2-Valve SOHC Carbureted |
| Recommended fuel | 87 Octane (up to 10% ethanol) |
| Ignition | CDI w/ Electronic Spark Advance |
| Alternator output | 6 Amp (optional) |
| Gear ratio | 2.08:1 |
| Gear shift | Forward, Neutral, Reverse |
| Shaft length | 20 inch |
| Dry weight | 91 lbs (41 kg) |
| Controls | Manual Tiller |
| Steering | Tiller |
| Trim and tilt | Manual (5 positions) |
| Exhaust | Through Propeller |
| Cooling system | Water Cooled w/ Thermostat |
| Lubrication | Pressure Lubrication |
| Oil capacity | 0.85 Quarts (0.8 Liter) |
| Emissions rating | EPA 2010 / C.A.R.B. 3-Star |
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