The Tohatsu MFS140AETUL represents the pinnacle of mid-range outboard engineering, combining 140 horsepower of refined 4-cylinder power with Tohatsu’s revolutionary technology and classic Aquamarine Blue finish. This Generation A model features a robust 121.6 cubic inch, 4-cylinder engine with Single Overhead Cam design and electronic fuel injection, delivering smooth power throughout its 5,150-5,850 RPM operating range. The precision-engineered 25-inch ultra-long shaft length makes this outboard ideal for larger transoms, pontoon boats, commercial vessels, and specialty applications requiring extended reach.
The industry-first 4-2-1 Performance Tuned Exhaust system sets this outboard apart from the competition, providing outstanding torque performance, top-end speed, acceleration, and exceptional fuel economy. This innovative exhaust design features equal-length passages for each cylinder, promoting optimal performance throughout the entire RPM range while creating extra suction to enhance exhaust flow. Combined with the unique SOHC-4V design and strategically placed spark plugs, the MFS140AETUL delivers the best-in-class torque-to-displacement ratio that outperforms heavier 150 horsepower outboards weighing up to 100 pounds more.
The classic Aquamarine Blue finish provides Tohatsu’s signature appearance while offering proven durability and UV resistance in demanding marine environments. Electric start ensures reliable operation in all conditions, while the integrated power trim and tilt system provides optimal boat attitude control for maximum performance and comfort. At 402 pounds, this ultra-long shaft configuration delivers exceptional power-to-weight ratio while maintaining the structural integrity required for demanding commercial and recreational applications.
Advanced features include adjustable trolling speed control from 650-850 RPMs in 5-step increments, accessible through remote control systems or multi-function tiller handle options. TOCS (Tohatsu Onboard Communication System) ensures seamless integration with modern marine electronics through simple plug-and-play connections. The Maximum Acceleration System improves holeshot performance and quicker planing, while the Fuel-Efficient Cruise System maximizes range during extended operations.
The revolutionary design built on Tohatsu’s best-selling engine platforms provides outstanding torque, increased durability, optimized weight, and smooth operation that delivers top performance available only from Tohatsu. The 25-inch ultra-long shaft configuration makes this outboard perfect for pontoon boats, larger center consoles, commercial workboats, and specialty vessels requiring extended propeller positioning for optimal performance.
Standard equipment includes a high-output alternator producing 12V, 492W, 41A to handle demanding electrical loads from navigation equipment, fishfinders, and communication systems essential for commercial and recreational operations. Standard safety features include engine stop switch lanyard, comprehensive overheat warning system, and advanced diagnostic capabilities.
The 2.08:1 gear reduction ratio ensures optimal propeller performance across a wide range of applications, from commercial fishing and patrol boats to recreational pontoons and specialty vessels. California CARB 3-star rated for ultra-low emissions and backed by Tohatsu’s industry-leading 5-year limited warranty, the MFS140AETUL represents over 100 years of Japanese marine engineering excellence optimized for applications requiring extended shaft reach and uncompromising reliability.
