Tohatsu 90 hp outboard motor MFS90A ETL

The synergy between the 4-2-1 Performance Tuned Exhaust and our precisely tuned ECU programming allows the MFS90 to provide strong acceleration when needed to get the boat on plane faster and reach top speed more quickly.

Equipped with standard features such as the Variable Idle System, which allows you to change the idle speed from 650 to 850 RPM, a low gear ratio (2.08:1) that gives you the higher low-end torque your boat needs, a freshwater flushing system designed to simplify routine flushing, and a powerful 41-amp alternator, the MFS90 offers the industry-leading features you expect from Tohatsu.

The design of the MFS90 is based on the best-selling models, the MFS40/50/60 and the MFS9.9/15/20. The legacy of these best-performing and most reliable engines has been passed on to our all-new MFS90 4-stroke outboard motor, featuring a dynamic design and refined details along with industry-first innovative features.

Practical experience from sea trial

With a Reitdieper 730 and three people on board, a top speed of approximately 50 km/h was measured with the Tohatsu MFS90A. This measurement provides a practical indication of the engine's performance on a larger tender sloop. The final speed depends on factors including load, propeller, engine mounting, waterway conditions, and weather.

SPECIFICATIONS

• Power: 90 HP
• Lubrication: 4-stroke
• Weight: 178 kilograms
• Starting: Electric
• Steering type: Remote control or tiller handle
  
• Gear shift: Forward - Neutral - Reverse
• Fuel system: Injection
• Number of cylinders: 4
• Displacement: 1995 cm3
• Maximum output: 66 kW
• Full throttle RPM range: 5150-5850 RPM
• Bore × stroke: 84x90 mm
• Trim/tilt method: Power trim - Manual trim/tilt
• Shaft length: L (20'' = 51 centimeters)

ADVANTAGES

• Dynamic design with refined details
• Exciting sailing performance
• Superior durability and optimized weight
• Excellent fuel economy due to unique SOHC-4V design. Consumption at half power is 10.9 liters per hour and at full power 36.3 liters per hour (source: boat-fuel-economy.com).
• Performance-inspired engine sound and the quietest at idle
• Tuned ECU programming

High performance and simple operation

• 4-2-1 Performance Tuned Exhaust generates high torque to get you on plane faster
• A precisely tuned ECU ensures strong acceleration when needed
• Electronic fuel injection
• Microcomputer-programmed ignition system for faster starting
• Powerful 41-amp alternator
• New and improved gearbox with wider splash plate and anti-ventilation plate
• Adjustable steering friction and trim tab for reduced steering effort
• Power trim and tilt

Basics for user convenience and reliability

FEATURES

4-2-1 Performance Tuned Exhaust
Isometric aggregate exhaust manifold "4-2-1 Performance Tuned Exhaust" maximizes torque and acceleration performance. This unique design is an industry first and is only found on Tohatsu outboard motors. By designing each exhaust passage to be of equal length, merging the exhaust from each cylinder creates additional suction that helps pull the exhaust out of the engine. This completely eliminates the possibility of exhaust interference and dramatically improves performance.
Video with details is available on this page.

Excellent torque
With the 4-2-1 Performance Tuned Exhaust, the MFS75/90/100/115 has the highest torque, allowing you to get on plane faster and reach top speed sooner than any other competitor.

Data based on research conducted and collected by the Tohatsu Engineering Department

Superior durability and optimized weight
For high durability and weight reduction, Tohatsu has optimized every relatively heavy component, such as the cylinder head, exhaust manifold, engine base, oil pan, lower unit, etc. A special anodizing process has also been used on all major aluminum components for a longer engine service life.

Excellent fuel efficiency
The MFS75/90/100/115 features 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 each combustion chamber for the most efficient combustion with optimal heat conduction, resulting in strong performance and fuel efficiency.

Quiet engine
With the equal-length intake manifold, 4-2-1 Performance Tuned Exhaust, and precisely tuned ECU, the MFS75/90/100/115 delivers an exciting and performance-oriented engine sound. Also, within the large-capacity Idle Port, sounds reflect off each other to dampen the exhaust flow, contributing to the lowest sound level at idle.

Maneuverability
With its refined ECU programming, the MFS75/90/100/115 is designed to improve acceleration when needed to get the boat on plane faster. When you give full throttle, the ECU recognizes this and fires in all four cylinders simultaneously. At the same time, the ECU optimizes and delivers enough air and fuel, making the air/fuel mixture more suitable for rapid acceleration to generate higher torque. The higher the torque, the stronger the acceleration you get, resulting in improved hole-shots and therefore faster planing. Additionally, the upper and lower mounts and the gearcase have been optimized for direct steering response, maneuverability, and greater stability.

Optional: TOCS 4.3-inch LCD color display with information on:

• Engine RPM
• Engine operating temperature
• Battery voltage
• Fuel consumption
• Tilt/trim gauge*
• Total engine operating hours
• Total fuel consumption
• Fuel tank level(s)
• Current consumption
• Course/speed
• Various alerts
• Self-diagnosis system

With NMEA 2000, J1939 CAN Bus, and connectivity.

It is also possible to order a package of original Tohatsu analog built-in gauges for the same price; tachometer, speedometer, hour meter, trim gauge, voltmeter, and fuel gauge.

WHY TOHATSU

• Tohatsu from Japan has been around for over 100 years and produces more than 200,000 outboard motors per year. TOHATSU is one of the largest outboard motor manufacturers in the world.
  
  
• Tohatsu has more than 10 percent market share in the Netherlands and is growing rapidly. For models up to 30 HP, they have over 20% market share!
  
  
• Did you know that Mercury even has its outboard motors up to 30 HP manufactured by Tohatsu? The models share a lot of technology, but the finish and price may differ.
  The Tohatsu BFT models from 150 HP and up have been based on Honda models since 2014. So, you get a reliable Honda engine at a Tohatsu price.
  

• Tohatsu engines offer a strong combination of quality and price compared to other top brands. Tohatsu focuses exclusively on outboard motors and specializes in them.
  
  
• Tohatsu pays a lot of attention to the appearance of its outboard motors, and you can see that in this model. The look is tough and robust. Under the beautifully streamlined cowling, you will find the trusted Tohatsu technology, developed for years of boating pleasure with minimal maintenance.
  
  
• The Tohatsu engine is user-friendly in every respect. For example, the oil filter is positioned so that you can easily replace it yourself. Lubrication of your outboard motor is optimal thanks to the generous oil reservoir. By using the proven Tohatsu electronic injection system, your engine starts smoothly, and the throttle response is quick. The RPM can be controlled smoothly.
  
  
• Your newly purchased Tohatsu outboard motor comes with a full 5-year factory warranty.
  

• Tohatsu scores well in various comparative tests.
  • Read the test reports for, among others, the 15, 30, and 60 HP engines. Tohatsu has a strong price-performance ratio according to 'Boote' tests.
  • The ANWB 'Waterkampioen' also conducted an outboard motor test. In the ANWB Waterkampioen test, the Tohatsu 6 HP emerged as the winner, based on factors including weight, noise level, and ease of use. The ANWB test rated the Tohatsu 6 HP as the best choice.
  • Boote-Magazin.de also tested the Tohatsu MFS115 A. The review mentions an impressive result due to the best torque-to-weight ratio and higher top speed. Because of its small displacement, the Tohatsu is also extremely economical.
• Most models are available from stock!

Why Tohatsu scores well in various tests.

Tohatsu pays a lot of attention to the appearance of its outboard motors, and you can see that in this model. The look is tough and robust. Under the beautifully streamlined cowling, you will find the trusted Tohatsu technology, developed for years of boating pleasure with minimal maintenance. The engine is user-friendly in every respect. For example, the oil filter is positioned so that you can easily replace it yourself. Lubrication of your outboard motor is optimal thanks to the generous oil reservoir. By using the proven Tohatsu electronic injection system, your engine starts smoothly, and the throttle response is quick. The RPM can be controlled smoothly.

WARRANTY & DELIVERY TIME

Your newly purchased Tohatsu outboard motor comes with a 5-year full factory warranty. This gives you solid assurance for worry-free boating. With your purchase, you will receive the warranty document and certificate. Technical defects that occur within the warranty period and fall under the warranty terms will be repaired free of charge.

CONFIGURATIONS:

• ETL: E: electric start, T: remote control and power trim, L: long shaft.
  For steering wheel operation, both mechanical and hydraulic are possible. With power trim and tilt, you can optimize the engine's tilt angle at the push of a button. With the trim gauge, you can quickly see if the engine angle is correct. This allows you to accelerate faster, sail smoother, faster, more economically, more stably, and above all, more safely. Also useful for trailering.
  
  
• EFTL tiller Multifunctional steering handle (tiller) with Big Multi Tiller C handle (see images) with PTT switch on the handle.
  This gives you electric start and power trim for the outboard motor, without the need for remote control steering. An ergonomically designed large shift lever on the front and a longer throttle grip with a PTT switch (Power Trim & Tilt) at the end of the handle for easier operation and maneuverability. To balance different wind and current conditions, the Variable Idling System allows the user to select the best idle speed from 5 different RPM ranges simply by pressing the key switch.
  - Ergonomically designed shift lever.
  - Longer throttle grip with 110-degree rotation for maneuverability
  - Throttle Friction function for fine-tuning tiller comfort
  - Steering Co-Pilot for steering control.
  - Warning lights, key switch, and tilt/trim switch (in the grip) easily accessible
  - Available in the color Aqua Blue (Article number 3SSQ63000-2) or Belgua White (Article number 3SSW63000-2). Surcharge €395
  
  

• At Marinaut, it is complete and therefore includes:

  • Trim gauge: (2" diameter) shows the trim position of the engine for optimal performance and efficiency. Features a domed lens to minimize glare in direct sunlight, a fog- and scratch-resistant coating, and a chrome bezel.

  • Tachometer: with a range of 7,000 RPM (10 cm diameter), features a chrome bezel and is backlit for good readability in the dark. Features a domed lens to minimize glare in direct sunlight and a fog- and scratch-resistant coating. The tachometer informs you about potential problems, such as low oil pressure, a nearly dead battery, and overheating via built-in warning lights.

  • Standard vertical installation panel (article number 3ZG-84556-0)
    • without remote control
    • with wiring harness with ignition switch and kill switch
    • communication cable kit
      or upon request:
    • side-mount switch box remote control with power trim (article number 3ZG-84555-0)
    • wiring harness with ignition switch and kill switch
    • communication cable kit
  • aluminum propeller with 3 blades and hub kit (connection between propeller and propeller shaft) aftermarket*.
  • 24-liter fuel tank with fuel line with primer bulb aftermarket (55-liter surcharge €195
  • engine oil

  • delivery inspection.
    The included aftermarket three-blade aluminum propeller and hub kit, the 24-liter fuel tank with fuel line and primer bulb, the engine oil, and the delivery inspection have a combined value of €475.

• *or OEM Tohatsu aluminum propeller with 3 blades and hub kit. Surcharge €419.

  Available propeller sizes:

	Displacement	Diameter	Pitch			Article number
	Light	13.2	21			3HKB64545-0
	Light	13.2	19 (most supplied)			3HKB64541-0
	Medium	13.3	17			3HKB64536-0
	Medium	13.5	15			3HKB64532-0
	Medium	13.7	13			3HKB64527-0
	Heavy	14	11			3HKB64523-0
	Heavy	14	9			3HKB64518-0

Choose a lower pitch for heavier boats: higher acceleration (for water skiing/wakeboarding). Higher pitch for lighter boats: higher speed.

If the RPM at full throttle is too low, a smaller pitch can provide a higher top speed and acceleration. 1 pitch size corresponds to a difference of approximately 200 to 300 RPM. NB: choosing a pitch that is too low can lead to exceeding the maximum RPM, which may result in engine damage.

You can also achieve more pulling power and higher RPM with a larger diameter, and less pulling power and higher RPM with a smaller diameter.

• Trade-in is possible
• Delivery time upon consultation. Please contact us by phone at +31(0)24799804 , via e-mail at info@marinaut.nl or via the chat (bottom right).
• View the brochure and the manual here