Outboard motor

MFS75/90/100/115 A

Presentation

The design of the MFS75/90/100/115 is based on that of the best-selling Tohatsu MFS40/50/60 and MFS9,9/15/20. The heritage of these top-performing and reliable
engines has been carried through to the entire MFS75/90/100/115 4-stroke outboard range, with innovative, exclusive features and an ergonomic, elegant design.
and elegant design. The result for these 4-stroke, 4-cylinder engines:

  • exceptional torque achieved by a tuned exhaust system with optimized performance;
  • enhanced durability and optimized weight thanks to in-depth analysis of every major component;
  • superior performance achieved by performance-optimized ECU programming.


This is the first outboard engine to adopt the state-of-the-art 4-2-1 Performance Optimized Exhaust Manifold design.

  • Equal-length exhaust passages on each cylinder eliminate the possibility of interference to generate the best performance throughout the rev range.
  • Exhaust gases from cylinders #1 and #4 on the one hand, and #2 and #3 on the other, combine into a single passage.
  • These two passages merge, generating the best exhaust flow by creating an additional intake that helps evacuate engine exhaust.
  • This exclusive Tohatsu design eliminates exhaust gas interference, unlike a standard 4-to-1 exhaust manifold.

How the Tohatsu Exclusive 4-2-1 Optimized Exhaust Manifold

Features

Special features

Number of cylinders
4 cylinders in line- SOHC-4V
Power ratings
75/90/100/115
Displacement
1995 cc
Shaft length
Long: 517 mm / Ultra Long: 644 mm
Dry weight
Long : 178 kg / Ultra Long :183 kg
Baseplate ratio
2:08

Documentation

Tohatsu 2022 catalog
Doc MF575-140 range

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