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Tohatsu

Tohatsu is Japan's oldest outboard manufacturer, having produced its first engine in 1956.

While often operating behind the scenes as an OEM manufacturer for other major brands, Tohatsu-branded engines are renowned for their rugged, no-nonsense durability. Their distinctive 4-2-1 Performance Tuned Exhaust system is a marvel of engineering, utilizing equal-length exhaust headers to maximize low-end torque and acceleration in their mid-range models. Tohatsu also pioneered TLDI (Two-stroke Low pressure Direct Injection) technology, providing 2-stroke performance with 4-stroke efficiency during the transition years of the early 2000s. Today, Tohatsu focuses on being the lightweight leader, consistently offering the lightest engines in the 20hp to 50hp classes. Their engineering philosophy prioritizes reliability over unnecessary complexity, making them a global favorite for commercial fishermen and rescue organizations who operate in remote areas.

Technical Authority Verified manufacturer specifications and historical performance data for the Tohatsu fleet.
Model Year HP Stroke Service Data Cyl. Displ. Fuel System Weight Gear Ratio Status
MFS2.5 (4-Stroke) 2010 2.5 4-stroke ✓ Verified 1 cyl 85 cc Carbureted 18.4 kg 2.15:1 Discontinued
MFS2.5 2024 2.5 4-stroke ✓ Verified 1 cyl 85 cc Carbureted 18.4 kg 2.15:1 ● Current
MFS3.5 (4-Stroke) 2010 3.5 4-stroke ✓ Verified 1 cyl 85 cc Carbureted 18.4 kg 2.15:1 Discontinued
MFS4 (4-Stroke) 2010 4 4-stroke ✓ Verified 1 cyl 123 cc Carbureted 25 kg 2.15:1 Discontinued
MFS5 (4-Stroke) 2010 5 4-stroke ✓ Verified 1 cyl 123 cc Carbureted 25 kg 2.15:1 Discontinued
MFS6 Sail Pro 2024 6 4-stroke ✓ Verified 1 cyl 123 cc Carbureted 27 kg 2.15:1 ● Current
MFS6 (4-Stroke) 2010 6 4-stroke ✓ Verified 1 cyl 123 cc Carbureted 25 kg 2.15:1 Discontinued
MFS8 (4-Stroke) 2010 8 4-stroke ✓ Verified 2 cyl 209 cc Carbureted 37 kg 2.08:1 Discontinued
MFS9.8 (4-Stroke) 2010 9.8 4-stroke ✓ Verified 2 cyl 209 cc Carbureted 37 kg 2.08:1 Discontinued
M9.9D2 (2-Stroke) 2005 9.9 2-stroke ✓ Verified 2 cyl 247 cc Carbureted 41 kg 1.85:1 Discontinued
MFS9.9 (4-Stroke) 2010 9.9 4-stroke ✓ Verified 2 cyl 351 cc Carbureted 52 kg 2.15:1 Discontinued
MFS15 (4-Stroke) 2010 15 4-stroke ✓ Verified 2 cyl 351 cc Carbureted 52 kg 2.15:1 Discontinued
M18E2 (2-Stroke) 2005 18 2-stroke ✓ Verified 2 cyl 294 cc Carbureted 41 kg 1.85:1 Discontinued
MFS20 (4-Stroke) 2010 20 4-stroke ✓ Verified 2 cyl 351 cc Carbureted 52 kg 2.15:1 Discontinued
MFS25 (Early EFI) 2010 25 4-stroke ✓ Verified 3 cyl 526 cc EFI 71.5 kg 1.92:1 Discontinued
MFS25 EFI (3-Cyl) 2024 25 4-stroke ✓ Verified 3 cyl 500 cc EFI 58 kg 2.17:1 ● Current
MFS30 EFI (3-Cyl) 2024 30 4-stroke ✓ Verified 3 cyl 500 cc EFI 62 kg 2.17:1 ● Current
MFS30 (Early EFI) 2010 30 4-stroke ✓ Verified 3 cyl 526 cc EFI 71.5 kg 1.92:1 Discontinued
M40C (2-Stroke) 2000 40 2-stroke ✓ Verified 2 cyl 493 cc Carbureted 59 kg 1.92:1 Discontinued
MD40 TLDI (2-Stroke) 2010 40 2-stroke ✓ Verified 3 cyl 697 cc TLDI Direct Injection 100 kg 1.85:1 Discontinued
MFS50 EFI 2024 50 4-stroke ✓ Verified 3 cyl 866 cc EFI 95 kg 2.08:1 ● Current
MD50 TLDI (2-Stroke) 2010 50 2-stroke ✓ Verified 3 cyl 697 cc TLDI Direct Injection 103 kg 1.85:1 Discontinued
MD70 TLDI (2-Stroke) 2010 70 2-stroke ✓ Verified 3 cyl 1267 cc TLDI Direct Injection 143 kg 2.00:1 Discontinued
MFS75 (4-2-1 Exhaust) 2024 75 4-stroke ✓ Verified 4 cyl 1995 cc EFI 178 kg 2.08:1 ● Current
MFS90 (4-2-1 Exhaust) 2024 90 4-stroke ✓ Verified 4 cyl 1995 cc EFI 178 kg 2.08:1 ● Current
MD90 TLDI (2-Stroke) 2010 90 2-stroke ✓ Verified 3 cyl 1267 cc TLDI Direct Injection 143 kg 2.00:1 Discontinued
MFS100 (4-2-1 Exhaust) 2024 100 4-stroke ✓ Verified 4 cyl 1995 cc EFI 178 kg 2.08:1 ● Current
MD115 TLDI (2-Stroke) 2010 115 2-stroke ✓ Verified 4 cyl 1768 cc TLDI Direct Injection 178 kg 2.00:1 Discontinued
MFS115 (4-2-1 Exhaust) 2024 115 4-stroke ✓ Verified 4 cyl 1995 cc EFI 178 kg 2.08:1 ● Current
115hp TLDI (2-Stroke) 2010 115 2-stroke ✓ Verified 4 cyl 1768 cc TLDI (Low Pressure DFI) 178 kg 2.00:1 Discontinued
MFS115A (4-2-1 Exhaust) 2024 115 4-stroke ✓ Verified 4 cyl 1995 cc EFI 178 kg 2.08:1 ● Current
MFS140A (4-2-1 Exhaust) 2024 140 4-stroke ✓ Verified 4 cyl 1995 cc EFI 178 kg 2.08:1 ● Current