MFS90hp EPTL 4-stroke outboard

Models available:
  • MSF90A All new 4-2-1 Performance Tuned Exhaust system


  • High output alternator that produces 90 amp alternator with 60 charging amps
  • Double sealed multi-layered paint process to help protect against corrosion
  • Painted interior cooling passages for extra protection against corrosion

High performance and easy operation:

  • • Dynamic design with sophisticated details
  • • Exhilarating boating performance
  • • Superior durability & optimized weight
  • • Outstanding fuel economy from unique SOHC-4V design
  • • Performance-inspired engine sound and the most quietest at idle
  • • Fine-tuned ECU Programming
  • • Available in long (20”) shaft lengths
  • • 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
  • • Variable idling speed control from 650 to 850 RPMs at 5-steps
  • Key Features:

    Tohatsu outboard motors - performance tuned enhausts

    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.

    Tohatsu outboard motors - performance tuned enhausts

    Outstanding Torque

    From 4-2-1 Performance Tuned Exhaust, MFS75/90/100/115 have the highest torque that gets you on plane quicker and reach the top end speed faster than any other competitors. **Data based on research done and collected by Tohatsu Engineering Department

    Tohatsu outboard motors - performance tuned enhausts

    Superior Durability & Optimized Weight

    For high durability and weight reduction purposes, Tohatsu optimized each relatively heavy component such as cylinder head, exhaust manifold, engine base, oil pan, lower unit etc.. Also, special anodized process has been utilized on all major aluminum components for prolonged engine life.

    Tohatsu outboard motors - performance tuned enhausts

    Excellent Fuel Efficiency

    MFS75/90/100/115 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.

    Tohatsu outboard motors - performance tuned enhausts


    With the even-length Intake Manifold, 4-2-1 Performance Tuned Exhaust, and fine-tuned ECU, MFS75/90/100/115 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.

    Tohatsu outboard motors - performance tuned enhausts


    With its fined-tuned ECU programming, MFS75/90/100/115 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.

    Tohatsu outboard motors - performance tuned enhausts

    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.

    Tohatsu outboard motors - performance tuned enhausts

    TOCS 4.3 inch LCD Display (optional)

    The 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.