MFS140A

Our recently introduced line-up of MFS75-115A has expanded to 140 horsepower. With a dynamic design and sophisticated details, the MFS140A provides outstanding torque, increased durability, optimized weight and smooth operation.

Unique and industry-first 4-2-1 Performance Tuned Exhaust manifold has been designed to maximize low end torque and acceleration performance. Best in class torque to displacement ratio creates excellent performance for all styles of boats from light to heavy weight, pleasure or commercial use. On certain boat applications, the MFS140A will perform similarly when compared to heavier 150 horsepower outboards that weigh as much as 100 pounds more.

Engineered with Simpliq™ Technology, the MFS140A has a SOHC-4V design. The spark plugs are strategically placed in the center of each combustion chamber for the most efficient combustion with optimal heat conduction, which results in strong running and fuel efficiency.

With the introduction of MFS140A counter-rotation model, the combination of standard and counter rotation models provides better maneuverability and stability in twin MFS140A applications.

Standard features include:

•Variable Idle System to adjust the idle RPMs from 650 to 850, in 50 RPM increments, for better trolling control

•Low gear ratio (2.08:1) provides low end torque and better top end performance

•Fresh-water Flushing System designed to make routine flushing easier

•High Output 41 amp Alternator

The MFS140A provides top performance you can only experience with Tohatsu.

Dynamic design with sophisticated details Click Here

Exhilarating boating performance

Superior durability & optimized weight

Outstanding fuel economy from unique SOHC-4V design

Performance-inspired engine sound and the most quiet at idle

Fine-tuned ECU Programming

Available in counter-rotation for ultra long (25”) shaft length

Available in long (20”) & ultra long (25”) shaft lengths

Ultra-low 3 star CARB & EPA emission approved

5 Year limited warranty

High Performance and Easy Operation

4-2-1 Performance Tuned Exhaust generates high torque to get you on plane quicker

Fine-tuned ECU provides the strong acceleration when needed

Electronic Fuel Injection

MicroComputer Programmed ignition system for quicker starts

High output 41 amp alternator

New and improved gear case with wider splash plate and anti-ventilation plate

Adjustable steering friction and trim tab for reducing steering effort

Power Trim and Tilt

Fundamentals for User Convenience and Reliability

Sheet Molding Compound (SMC) cowlings for durability

Anodized major aluminum components for greater corrosion resistance

Oil catch tray underneath the oil filter for cleaner oil filter changes

Easily accessible and removable fuel filter allows simple and quick water draining

More than 16 sacrificial anodes strategically placed throughout all major components

Through the prop exhaust for a quieter operation

Built-in freshwater flushing system for easy routine flushing

Variable idling speed control from 650 to 850 RPMs at 5-steps

A camshaft-driven trochoid oil pump ensures long-term durability of critical engine components

Stainless steel water pump housing liner for outstanding durability

Warning & Protection

Low oil pressure warning (visual and audible)

Overheat warning (audible)

Start-in-gear protection for safer engine starting

Safety lanyard (an essential protection feature standard on all Tohatsu outboards)

Over-rev. limiter

Tohatsu 140 hp 4-Stroke Benefits

4-2-1 Performance Tuned Exhaust

Isometric aggregated exhaust manifold "4-2-1 Performance Tuned Exhaust" maximizes torque and acceleration performance. This unique design is an industry-first and can only be found on Tohatsu Outboards. By engineering each exhaust passage to be equal in length, the merging of exhaust of each cylinder creates extra suction that helps pull the exhaust from the engine. This completely eliminates the possibility of exhaust interference and drastically improves the performance.

Check how it works

Outstanding Torque

Industry first 4-2-1 Performance Tuned Exhaust system provides outstanding torque performance, top end speed, acceleration, and exceptional fuel economy. On certain boat applications, the MFS140A will perform similarly when compared to heavier 150hp outboards that weigh as much as 100 pounds pounds more.

Click here for larger image

Performance Oriented

Tohatsu's revolutionary MFS115A design has expanded to the new MFS140A. With outstanding torque, increased durability, optimized weight and smooth operation, our newest model lineup provides top performance you can only experience with Tohatsu.

Click here for larger image

Excellent Fuel Efficiency

MFS75/90/115 have a unique SOHC-4V design in its class where competitors are either SOHC-2V or DOHC-4V. Spark plugs are strategically placed in the center of the each combustion chamber for the most efficient combustion with optimal heat conduction which results in strong running and fuel efficiency.

Quietness

With the even-length Intake Manifold, 4-2-1 Performance Tuned Exhaust, and fine-tuned ECU, MFS75/90/115 provide exhilarating and performance-inspired engine sound. Also within the large capacity Idle Port, sounds reflect off each other to dampen the exhaust flow which contributes to the lowest sound at idle.

Maneuverability

With its fined-tuned ECU programming, MFS75/90/115 are designed to improve acceleration when needed in order to get the boat to plane quicker. When you throttle to wide open, the ECU recognizes it and ignites in all four cylinders at the same time. Simultaneously, the ECU optimizes and supplies adequate air & fuel which makes air/fuel mixture more suitable for rapid acceleration to generate higher torque. The higher the torque you have, the stronger the acceleration you will get, resulting in enhanced hole shots and thus, quicker planning. (Click Here) Also, Upper and Lower Mounts, and the Gear Case are optimized for direct steering response & maneuverability, and greater stability.

Counter-rotation

The combination of standard and counter rotation models improves maneuverability and stability in twin MFS140 applications.

Multi-Function Tiller Handle with Grip-End PTT Switch

Multi-Function Tiller Handle is a great choice for commercial use. It has an ergonomically designed large Shift Lever located at the front and a longer Throttle Grip with a PTT (Power Trim & Tilt) switch located at the grip-end for easier operation and maneuverability. To balance different wind and current conditions, the Variable Idling System allows the user to select the best idling speed from 5 different RPM ranges by simply pressing the Key Switch.

TOCS 4.3 inch LCD Display (optional)

The optional TOCS (Tohatsu Onboard Communication System) 4.3 inch LCD Display connects to the CAN bus and communicates directly with the engine's ECU. Engine data, fault codes, and alarms are displayed on the LCD display.