Tohatsu 115 HP Outboard Motor MFS115A ETL

Tohatsu MFS115A ETL 4-stroke outboard motor

This engine has a cylinder capacity of no less than 1995 cc, which gives this completely newly developed engine a very high torque.

Test boote-magazin.de:
Significantly more thrust: By changing the exhaust manifold in the new model series, Tohatsu has managed to significantly more torque to generate in the lower speed range.

In the outboard motor market, it's difficult to differentiate your product significantly from the competition. Of course, in our extensive BOOTE comparison tests, we always highlight strengths and weaknesses in fuel consumption, noise level, and acceleration. The latter is measured by the time it takes to reach a certain speed, and the results can vary by seconds. But outboard motors with the same performance are otherwise very similar. None are significantly stronger than the other, and none are significantly weaker.

When developing its new engine series between 75 and 115 hp, Japanese manufacturer Tohatsu's main goal was to differentiate itself from the market. But how? Should the new engines be even more fuel-efficient or even quieter than the competition? Fuel-efficient and, of course, quiet. Above all, the new engines must have the highest torque in their class across the entire speed range and reach their final velocity, and thus their top speed, the fastest.

At the same time, the developers wanted to break the old rule that "displacement is nothing but displacement"—because increasing the engine's displacement would mean significantly increasing its weight, and weight is always a disadvantage. So they wondered how they could increase the engine's power without increasing its displacement and found another way: "Why not design an exhaust manifold that has never been used on an outboard motor before?"

The purpose of an exhaust manifold is to optimally dissipate exhaust gases. When properly designed, a manifold can significantly improve performance, especially in the lower rpm range. Tohatsu calls the result of this lengthy development process "4-2-1 Performance Tuned Exhaust," a geometrically optimized exhaust system. Instead of merging all four exhaust manifolds into a single tailpipe, as is customary in the 4-2-1 concept, the exhaust ports of cylinders 1 (top) and 4 (bottom) and those of cylinders 2 and 3 are first combined into two tailpipes. These two tailpipes then merge into a single pipe. This concept has long been known in the tuning scene for older cars, but is highly unusual in this form for outboard motors.

Combining exhaust pipes of the exact same length, using the 4-2-1 method, creates suction that intensifies the flow of exhaust gases from the engine. Simply put, the pistons don't have to struggle to push the exhaust gases out through the valves; negative pressure assists them. In practice, this simple yet intelligent modification results in impressive acceleration, and the engine actually reaches its top speed faster.

We tested the new 115 hp model on the Elbe and were impressed with the power management, especially in the 3500-4500 rpm range. The high torque is clearly noticeable there. Acceleration feels unlike anything known from four-stroke engines of the same size: the boat lifts its nose briefly, then drops back down and literally starts running. The test boat, a Valiant V-570 RIB, reaches 50 kilometers per hour in 6.7 seconds and accelerates further to a 100 km/h speed without any significant reduction. top speed of 72 kilometers per hour with the Tohatsu 115 hp.

Tohatsu has even managed to meet all the specifications it set itself: the Tohatsu MFS115 AETL finds itself well below or in the middle of the field between the Yamaha F115 (2.1L, 163kg), Yamaha F115B (1.8L, 177kg), Suzuki DF115A (2L, 187kg) and Honda BF115 (2.3L, 220kg). Tohatsu offers the best torque-to-weight ratio. Its small displacement also makes the Tohatsu engine extremely fuel-efficient. Between 3,000 and 3,500 rpm, it consumes just 0.32 or 0.35 liters of gasoline per kilometer, giving it a theoretical range of 304 kilometers (100 liters) with good acceleration. At full throttle, the engine requires almost twice as much fuel (0.62 liters/kilometer), which is also perfectly acceptable in comparison.

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Speeds

• With a Gemini WR550 RIB with a boat weight of 350 kilograms, you can sail with a 115 hp outboard motor at a top speed of 80 kilometers per hour.
• With a Ryds 630 VI Sport with a boat weight of 690 kilograms, you can sail with a 115 hp outboard motor at a top speed of 74 kilometers per hour.
• With the Reitdieper 730 Tendersloep 7 meters with 870 kilograms boat weight you sail with a 115 hp outboard motor with a maximum speed of 57 kilometers per hour.

Water displacement
As a rule of thumb, for fast boats, you need 1 hp for a total weight of 10 to 20 kilograms. Based on this, this outboard motor is suitable for a total weight of 1 to 2 tons.
For displacement boats, 1 hp per 150 to 200 kilograms is sufficient; then the engine is adequate for 17 to 23 tons of total weight.

Tohatsu 115 HP outboard motor MFS115A ETL
The MFS115's design is based on our best-selling models, the MFS40/50/60 and MFS9.9/15/20. This heritage of high-performing and reliable engines has been carried over to our all-new MFS115 4-stroke outboard engine, featuring industry-first innovative features and design elements, with a dynamic design and refined details.

The groundbreaking technology, the 4-2-1 Performance Tuned Exhaust, delivers unparalleled torque across the entire RPM range. The higher the torque, the better the hole shot, which translates to higher speeds. Higher torque also means less drag, which in turn means more boating options; it can be used on any type of boat, from light to heavy, pleasure craft to commercial.

The synergy between the 4-2-1 Performance Tuned Exhaust and our finely tuned ECU programming, MFS115, provides strong acceleration when needed to get the boat on plane quicker and allow you to reach top speed faster.

Equipped with standard features like the Variable Idle System that allows you to change the idle speed from 650 to 850 RPM, a low gear ratio (2.08:1) giving you the higher low-end torque your boat demands, a freshwater flush system designed to simplify routine flushing, and a powerful 41-amp alternator, the MFS115 delivers the industry-leading features you expect from Tohatsu.

Standard features include:
• Variable idle system to adjust the idle speed from 650 to 850, in 50 rpm steps, for better control of the towline
• Low gear ratio (2.08:1) provides low torque and better top performance
• Fresh water rinse System designed to make routine rinsing easier

SPECIFICATIONS

• Power 115 hp
• Lubrication 4-stroke
• Weight 178 kilograms
• Start Electric
• Control type Remote control or steering lever
  
• Gear lever Forward - Neutral - Backward
• Fuel system Injection
• Number of cylinders 4
• Cylinder capacity 1995 cm3
• Maximum power 85 kW
• Full throttle working speed 5150-5850 revolutions per minute
• Bore x impact 84x90 mm
• Trim/tilt mode Powertrim - Manual trim/tilt
• Tail 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
• Performance-inspired engine sound and the quietest idling
• Tuned ECU programming
- Available in long (20”) & ultra long (25”) shaft lengths

High performance and easy operation

• 4-2-1 Performance Tuned exhaust generates high torque to get you on the plane quicker
• A precisely tuned ECU delivers strong acceleration when needed
• Electronic fuel injection
• MicroComputer Programmed ignition system for faster starting
• Powerful 41 amp dynamo
• New and improved gearbox with wider mudguard and anti-ventilation plate
• Adjustable steering friction and trim tab for less steering effort
• Power trim and tilt

Principles of ease of use and reliability

FEATURES

4-2-1 Performance Tuned exhaust
The isometric aggregate exhaust manifold "4-2-1 Performance Tuned Exhaust" maximizes torque and acceleration. This unique design is an industry first and is only found on Tohatsu outboards. By designing each exhaust passage to be the same length, the combination of 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 available on this page.

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

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

Superior durability and optimized weight
To ensure high durability and weight reduction, Tohatsu optimized each relatively heavy component, such as the cylinder head, exhaust manifold, engine base, oil pan, lower unit, etc. A special anodizing process was also used on all major aluminum components for extended engine 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 running and fuel efficiency.

Silent engine
Featuring a equal-length intake manifold, 4-2-1 Performance Tuned exhaust, and a precisely tuned ECU, the MFS75/90/100/115 delivers an exciting, performance-focused engine note. Sounds also bounce off each other within the large-capacity idle port, dampening the exhaust flow, contributing to the quietest idle noise.

Agility
With its sophisticated ECU programming, the MFS75/90/100/115 is designed to improve acceleration when needed to get the boat on plane quicker. If you open the throttle too wide, the ECU recognizes this and fires all four cylinders simultaneously. At the same time, the ECU optimizes and delivers sufficient air and fuel, making the air/fuel mixture more suitable for quick acceleration to generate higher torque. The higher the torque, the stronger the acceleration you get, resulting in improved hole shots and therefore faster planing. (Click here) In addition, the upper and lower mounts and the gearbox have been optimized for instant steering response, agility and greater stability.

Option: TOCS 4.3 inch LCD color display with information on:

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

With NMEA2000 , J1939 CAN Bus and coupling.

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

THEREFORE TOHATSU

• Tohatsu, based in Japan, has been in business for over 100 years and produces more than 200,000 outboard motors annually. TOHATSU is the largest outboard motor manufacturer in the world.
  
  
• Tohatsu has over a 10 percent market share in the Netherlands and is growing fastest in the country. For models up to 30 hp, it already boasts a market share of over 20% !
  
  
• Did you know that Mercury even has Tohatsu manufacture its outboard motors up to 30 hp? The only difference is the cowling and the price.
  The Tohatsu BFT models from 150 hp are rebranded Hondas since 2014. So you get a reliable Honda engine for a Tohatsu price.
  

• Tohatsu motors offer the highest quality and are lower priced than other premium brands. Tohatsu is also the only brand that produces exclusively outboard motors, so it's truly specialized.
  
  
• Tohatsu pays close attention to the appearance of its outboard motors, and this model reflects that. The look is rugged and robust. Under the sleekly streamlined hood, you'll find trusted Tohatsu technology, designed for years of boating enjoyment with minimal maintenance.
  
  
• The Tohatsu engine is user-friendly in every respect. For example, the oil filter is positioned so you can easily change it yourself. The generous oil reservoir provides optimal lubrication for your outboard motor. The proven Tohatsu electronic injection system ensures smooth starting and quick throttle response. The RPM is easily controlled.
  
  
• Your newly purchased Tohatsu outboard motor comes with a full 5-year manufacturer's warranty .
  

• Tohatsu always comes out well in comparison tests.
  • Read the test reports for the 15 , 30 , and 60 hp engines, among others. Tohatsu is the price-performance winner according to Boote Testen.
  • The ANWB 'Water Champion' also conducted an outboard motor test. The Tohatsu 6 hp came out as winner forward based on, among other things, weight, noise and ease of use. According to the ANWB, you can best buy a Tohatsu 6 HP outboard motor.
  • Boote-Magazin.de also has the Tohatsu MFS115 A tested: impressive result Thanks to its best torque-to-weight ratio and higher top speed, the Tohatsu is also extremely fuel-efficient thanks to its small displacement. 
• Most models are available from stock!

That's why Tohatsu is the best outboard motor.

Tohatsu pays close attention to the appearance of its outboard motors, and this model reflects that. The look is rugged and robust. Under the sleekly streamlined hood, you'll find trusted Tohatsu technology, designed for years of boating enjoyment with minimal maintenance. The motor is user-friendly in every way. For example, the oil filter is positioned so you can easily change it yourself. The generous oil reservoir provides optimal lubrication for your outboard motor. Thanks to the proven Tohatsu electronic injection system, your engine starts easily and delivers rapid throttle response. The RPM is easily controlled.

WARRANTY & DELIVERY TIME

Your newly purchased Tohatsu outboard motor comes with a full 5-year manufacturer's warranty . This gives you solid assurance of worry-free boating. You'll receive a warranty certificate and receipt with your purchase. Any technical defects that occur within the warranty period and are covered by the warranty terms will be repaired free of charge.

VERSIONS:

• ETL: E: Electric start , T: Remote control and power trim , L: Long tail.
  Steering wheel controls are available in both monocable and hydraulic versions. With power trim and tilt, you can optimize the engine's tilt angle at the touch of a button. The trim gauge provides a quick check of the engine's angle. This results in faster acceleration, smoother, faster, more fuel-efficient, more stable, and, above all, safer handling. Also handy for trailering.
  
  
• EFTL tiller Multifunctional tiller with Big Multi Tiller C handle (see images) with PTT switch on the handle.
  This gives you an electric start and power trim of the outboard motor, without the need for a remote control steering function.
  An ergonomically designed large shift lever at the front and a longer throttle grip with a PTT (Power Trim & Tilt) switch at the end of the handle for easier operation and maneuverability. To balance varying wind and current conditions, the Variable Idling System allows the user to select the optimal idle speed from 5 different RPM ranges by simply pressing the key switch.
  - Ergonomically designed shift lever.
  - Longer Thottle handle with 110 degrees of rotation for maneuverability
  -Throttle Friction function for fine-tuning the comfort of the tiller
  -Steering Co-Pilot for steering control.
  -Warning lights, key switch and tilt and trim switch (in the handle) easily accessible
  Available in Aqua Blue (Article number 3SSQ63000-2) or Belgua White (Article number 3SSW63000-2). Additional charge: €395.
  
  
• W: White additional charge 695,-

• At Marinaut it is complete, including :

  • Trim gauge: (2" diameter) shows the engine's trim position 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 7,000 rpm display (10 centimeters in diameter), it has a chrome ring and is illuminated for clear visibility in the dark. It features a domed lens to minimize glare in direct sunlight and a fog- and scratch-resistant coating. The tachometer alerts you to potential problems such as low oil pressure, low battery, and overheating via built-in warning lights.

  • Standard vertical mounting panel (article number 3ZG-84556-0)
    • without remote control
    • with wiring harness with ignition switch and dead man's switch
    • communications cable kit
      or on request:
    • side-mounted control box remote control with power trim (part number 3ZG-84555-0)
    • wiring harness with ignition switch and dead man's switch
    • communications cable kit
  • 3-blade aluminum propeller/screw and hub kit (connection between the propeller and the propeller shaft) aftermarket*.
  • 24 liter fuel tank with fuel hose with pump ball aftermarket (55 liter extra charge €195)
  • motor oil

  • delivery inspection.
    Worth 475 euros.

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

  Available propeller sizes:

	Water displacement	Diameter	Pitch			Article number
	Light	13.2	21			3HKB64545-0
	Light	13.2	19 (most delivered)			3HKB64541-0
	Average	13.3	17			3HKB64536-0
	Average	13.5	15			3HKB64532-0
	Average	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 waterskiing/wakeboarding). Higher pitch for lighter boats: higher speed.

If the RPM is too low at full throttle, a smaller pitch can result in a higher top speed and acceleration. One pitch makes a difference of about 200 to 300 RPM. NB: Choosing too low a pitch may result in exceeding the maximum RPM and thus in engine damage.

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

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