The Tohatsu MFS140 represents a breakthrough in mid-range outboard performance, delivering an impressive 140 horsepower through its revolutionary 4-cylinder design enhanced with industry-first 4-2-1 Performance Tuned Exhaust technology. This innovative exhaust manifold system has been specifically engineered to maximize low-end torque and acceleration, creating the best-in-class torque-to-displacement ratio that delivers exceptional performance across all boat types from lightweight to heavy applications.
The heart of the MFS140’s superior performance lies in its unique SOHC-4V design with strategically placed spark plugs positioned in the center of each combustion chamber. This configuration ensures optimal heat conduction and the most efficient combustion possible, resulting in strong running characteristics and impressive fuel efficiency. The 143.6 cubic inch displacement generates substantial power while maintaining remarkable economy throughout its 5,300-6,300 RPM operating range.
Revolutionary 4-2-1 Performance Tuned Exhaust technology sets the MFS140 apart from all competitors. The equal-length exhaust passages for each cylinder promote optimal performance throughout the entire RPM range, while the innovative design eliminates exhaust gas interference compared to conventional 4-to-1 exhaust manifolds. This engineering breakthrough delivers outstanding torque that enables the MFS140 to perform similarly to heavier 150hp outboards that weigh as much as 100 pounds more.
The Maximum Acceleration System enhances holeshot performance and reduces planing time by optimizing ignition timing during rapid throttle movements. Combined with the Fuel-Efficient Cruise System, which maintains optimal air/fuel mixture at cruising speeds, the MFS140 delivers both thrilling acceleration and exceptional fuel economy for extended adventures.
Now available in both standard and counter-rotation configurations, the MFS140 offers unprecedented versatility for twin-engine applications, improving maneuverability and stability. The combination of standard and counter-rotation models enhances overall boat handling and performance characteristics.
Advanced connectivity comes through the TOCS (Tohatsu Onboard Communication System), providing seamless communication with onboard electronics. The robust 12V, 492W, 41A alternator output ensures reliable power for all electrical systems and accessories.
Weighing just 392 pounds, the MFS140 accommodates propellers from 7″ to 17″ pitch and is compatible with 15″, 20″, and 25″ transom heights. Available in attractive Aqua Marine Blue, this motor combines performance with style.
Backed by Tohatsu’s industry-leading 5-year limited warranty and comprehensive dealer support, the MFS140 delivers revolutionary performance that redefines expectations in the mid-range outboard category, making it the ideal choice for boaters seeking maximum performance without the weight penalty of larger engines.
