Mercury 5HP 5MXLH – 4-Stroke 25in Extra Long

Mercury 5HP 5MXLH Extra Long Shaft Power

Technology focused and utilizing a 123cc engine family, the Mercury 5HP 5MXLH serves as a high-torque solution for US boaters requiring a prop-rated propulsion unit with superior thermal stability. This 5HP four-stroke technology utilizes a large displacement single-cylinder block to maximize hole-shot performance, effectively converting internal combustion into efficient thrust for high-transom skiffs and offshore sailboat backups. The 25-inch extra-long shaft design provides an optimized center of gravity for deep-V hulls, while the manual decompression system ensures immediate, one-pull starts across diverse inland and coastal environments.

Operational longevity of the 5MXLH model is secured through a specialized pressurized lubrication system featuring a high-flow oil pump to maintain internal cleanliness. To facilitate easy after-storage starts, the unit employs an integral fuel induction system with an optional external tank connector, while the Mercury XK360 alloy science utilizes a multi-layer finish to mitigate oxidation in high-salinity waters. With a 3-year/300-hour service interval and a 4A/50W alternator for accessory charging, this fuel-efficient outboard provides superior ownership value for boaters seeking a reliable, low-emission engine for specialized transom heights.

Key Features of Mercury 5MXLH

• 123cc Single-Cylinder OHV Four-Stroke Block
• 5.0HP Prop-Rated Output at 5000 RPM
• 25″ Extra Long Shaft / 59 lbs Dry Weight Chassis
• Carbureted Integral Fuel Induction System
• Tiller Steering with F-N-R Shifting
• CDI Ignition with 4A Charging Alternator
• 2.15:1 Gear Ratio / 15oz Oil Capacity