The Tohatsu MFS40AETS combines proven four-stroke performance with specialized short-shaft engineering, making it the ideal choice for boats with lower transom heights or unique mounting configurations. This 40 horsepower outboard features advanced electronic fuel injection technology, delivering smooth acceleration, quiet operation, and exceptional fuel economy while maintaining Tohatsu’s signature Aquamarine Blue marine finish that has represented quality and reliability for decades.
Built with Tohatsu’s advanced SOHC engine design featuring unique 9-valve technology with roller rocker arms, the MFS40AETS delivers dependable power from its 52.8 cubic inch, three-cylinder displacement across a 5,000-6,000 RPM operating range. The optimized 2.08:1 gear ratio ensures efficient propeller operation for superior acceleration and top-end performance. Electric start provides reliable ignition in all conditions, while the integrated power trim and tilt system offers precise boat positioning and performance optimization with convenient fingertip control.
The compact 15-inch shaft length makes this engine particularly well-suited for aluminum fishing boats, smaller runabouts, inflatables, and specialty craft where standard 20-inch shafts would be inappropriate. Weighing just 213 pounds, the MFS40AETS offers an excellent power-to-weight ratio while maintaining the robust construction Tohatsu is known for. The powerful 12V, 300W, 25A alternator keeps electrical systems charged during extended outings, supporting fish finders, lights, and other onboard electronics.
Advanced EFI technology delivers superior throttle response and consistent performance across varying weather conditions, while the trochoid pump lubrication system ensures optimal engine protection. The MFS40AETS meets California CARB three-star emissions standards, demonstrating environmental responsibility without compromising power delivery. Precision trolling speed control offers adjustable idle from 650-950 RPM, making it excellent for fishing applications or precise maneuvering in tight quarters.
The engine accommodates propellers ranging from 8 to 14 inches, allowing customization for specific boat configurations and performance requirements. High solid paint coating provides superior protection against UV damage and salt water corrosion, ensuring the classic Aquamarine Blue finish maintains its rich appearance season after season. Whether powering a bass boat, small center console, or specialized watercraft, the Tohatsu MFS40AETS delivers the perfect combination of compact design, modern efficiency, and legendary reliability that has made Tohatsu the trusted choice of boaters worldwide since 1956.
