Tohatsu
Japanese manufacturer of outboard motors, portable fire pumps, utility pumps, small fire trucks, transport refrigeration equipment, and related products.
Last updated August 22, 2026
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Overview
Tohatsu Corporation is a Japanese manufacturer whose best-known business is the development, production, and sale of outboard motors. The company traces its origins to the Takata Motor Research Institute, established in 1922 to research internal-combustion engines. It later operated under the name Tokyo Hatsudoki Company before adopting the Tohatsu name. From its early engineering work, the business expanded into portable generators, engines, railcars, motorcycles, marine propulsion, pumps, firefighting equipment, and other industrial products. Tohatsu entered motorcycle production in 1950 and experienced rapid expansion during the 1950s. By the middle of that decade, it reportedly held about 22 percent of Japan's motorcycle market, while also participating in motorcycle racing in Japan and overseas. Financial difficulties eventually led to the end of motorcycle production in 1964. The company's subsequent identity became increasingly associated with compact engines, marine propulsion, firefighting equipment, and pumps rather than consumer motorcycles. The first Tohatsu outboard motor was introduced in 1956, with an output of 1.5 horsepower. Outboard motors became the company's principal international product category and have been used in recreational boating, commercial fishing, military and government applications, marine transport, surf lifesaving, and racing. Tohatsu is particularly associated with compact and mid-sized outboard engines, where portability, operating economy, serviceability, and value are central elements of the product proposition. Tohatsu has also supplied engines for other marine brands through rebadging and manufacturing arrangements. A joint venture with Brunswick Corporation, established in 1988 as Tohatsu Marine Corporation, supported production of outboards for Mercury Marine. Some smaller Mercury outboards have therefore been based on Tohatsu products. The company has also supplied engines associated with Nissan Marine and entered an arrangement with Evinrude Outboard Motors in 2011 covering smaller engines. In North America, certain larger four-stroke outboards sold under the Tohatsu name after 2013 were sourced from Honda, while Tohatsu subsequently developed and produced its own 60-horsepower model based on its smaller-engine platform. By at least 2022, Tohatsu stated or was reported to have designed and built outboards up to 60 horsepower itself. Outside marine propulsion, Tohatsu's portfolio includes portable fire pumps, small fire trucks, construction and drainage pumps, and refrigeration units for transportation. The company also engages in real-estate property management in Japan. Its international profile is therefore broader than that of a conventional recreational-boating brand, although outboard motors remain the core public-facing business. Tohatsu continues to operate as an active Japanese industrial manufacturer with a global distribution and partner network.
History
Tohatsu's history begins in 1922 with the Takata Motor Research Institute, which conducted research into internal-combustion engines. Early work included high-speed portable engine generators and radio-controlled generators. These products entered production in 1930, establishing the company's initial manufacturing base and its long-term emphasis on compact power equipment. During the 1930s and 1940s, the company consolidated its product range and moved its corporate office to Tokyo. Its activities were not limited to engines: products during the 1930s included railcars supplied to Japan's Ministry of Railways. This period helped establish the technical breadth that later allowed the business to operate across transportation, propulsion, pumping, and emergency-response equipment. Tohatsu began producing and selling motorcycles in 1950. The business expanded rapidly in the middle of the decade. In 1955, capital was increased to 150 million yen, a new engine-production line was started, sales offices were established in Fukuoka, Nagoya, Tokyo, Sendai, and Sapporo, and a nationwide dealer network was developed. At its peak in the mid-1950s, Tohatsu reportedly held approximately 22 percent of the Japanese motorcycle market. It also manufactured racing motorcycles and achieved competition results in Japan and overseas. Financial problems ultimately forced the company to discontinue motorcycle production in 1964. The company's most consequential product transition occurred in 1956, when it produced its first outboard motor, rated at 1.5 horsepower. Marine engines gradually became central to Tohatsu's identity and international business. Its outboards were used across recreational boating, commercial fishing, military and marine-transport operations, surf lifesaving, and racing. The emphasis on relatively compact engines gave Tohatsu a position in applications requiring portability and manageable operating costs. Tohatsu's role in the outboard industry has included both its own branded products and manufacturing for other companies. In 1988, it and Brunswick Corporation created Tohatsu Marine Corporation to produce outboards for Mercury Marine. Some Mercury engines below 60 horsepower have consequently been based on Tohatsu designs or production. Tohatsu also supplied rebadged engines for Nissan Marine in North America. In 2011, it agreed to make smaller engines for Evinrude, including models rated at 15 horsepower and below. The company's North American product history also included sourcing relationships with Honda. After 2013, some Tohatsu four-stroke outboards above 50 horsepower sold in North America were rebadged Honda products. Tohatsu later introduced its own 60-horsepower model, described as an uprated development of its 40- and 50-horsepower engine family. By at least 2022, outboards up to 60 horsepower were reported as designed and built by Tohatsu. Although outboard motors are the company's most visible product, Tohatsu retains a diversified industrial portfolio. It manufactures portable fire pumps, small fire trucks, pumps for construction and drainage, and transportation refrigeration units. It also manages real estate in Japan. The company's present identity is therefore that of an active Japanese industrial and marine-equipment manufacturer with a global market presence and a long history of adapting compact-engine technology to different applications.
- 2022
Tohatsu-designed outboards up to 60 horsepower
[1]Available reporting indicated that Tohatsu-designed and Tohatsu-built outboards extended through the 60-horsepower class by at least this year.
- 2013
Honda-sourced four-stroke outboards appear in North American range
[1]Some Tohatsu four-stroke outboards above 50 horsepower sold in North America after this period were rebadged Honda products.
- 2011
Agreement with Evinrude for small engines
[1]Tohatsu agreed to produce smaller outboard engines for Evinrude, including engines rated at 15 horsepower and below.
- 1988
Tohatsu Marine Corporation is formed
[1]Tohatsu and Brunswick established a joint venture to manufacture outboard motors for Mercury Marine.
- 1964
Motorcycle production ends
[1]Financial problems led Tohatsu to discontinue motorcycle production and concentrate more heavily on other engine and equipment categories.
- 1956
First Tohatsu outboard motor
[1]Tohatsu introduced its first outboard motor, a 1.5-horsepower model that became the foundation of its modern marine business.
- 1955
Motorcycle business expands
[1]The company increased capital, launched a new engine-production line, expanded sales offices, and built a broader Japanese dealer network.
- 1950
Motorcycle production starts
[1]Tohatsu began manufacturing and selling motorcycles, opening a major consumer-product chapter in its history.
- 1930
Portable generator production begins
[1]High-speed portable engine generators and radio-controlled generators developed from the company's early research entered production.
- 1922
Takata Motor Research Institute begins operations
[1]The organization that became Tohatsu began researching internal-combustion engines, including portable power systems.
Products and positioning
An engineering-led Japanese marine and industrial equipment brand focused on compact, practical, and value-oriented propulsion and pumping products.
Marine propulsion · 1956
Tohatsu outboard motors
Tohatsu's principal product line comprises outboard engines for recreational boating, commercial fishing, military and government use, marine transportation, surf lifesaving, and competition. The range has historically included compact engines and, through at least the 60-horsepower class, products designed and built by Tohatsu. The company has also manufactured engines sold under partner brands, including Mercury-related products.
Firefighting equipment
Portable fire pumps
Portable fire pumps are part of Tohatsu's emergency-response equipment portfolio. They extend the company's compact-engine expertise into firefighting applications where mobility and independent pumping capability are important.
Firefighting vehicles
Small fire trucks
Tohatsu manufactures small fire trucks alongside its portable fire-pump products, serving the company's broader role as a supplier of firefighting and emergency-response equipment.
Industrial pumps
Construction and drainage pumps
The company's industrial pump portfolio includes equipment for construction sites and drainage work. These products complement its marine and firefighting businesses by applying compact power and pumping technology to utility and infrastructure settings.
Transport refrigeration
Transport refrigeration units
Tohatsu also produces refrigeration units for transportation, giving the company a presence in temperature-controlled logistics equipment beyond engines, pumps, and marine products.
Motorcycles · 1950
Motorcycles
Motorcycles were an important historical product line. Production began in 1950, and the company achieved a significant share of Japan's motorcycle market during the mid-1950s, including racing models. Financial difficulties resulted in the end of motorcycle production in 1964.
Brand decisions
2011
Supply smaller outboards for EvinrudeProduct launchBackground
Evinrude and Tohatsu pursued cooperation in the small-outboard segment.
Action taken
The companies agreed that Tohatsu would make smaller engines, including models rated at 15 horsepower and below, for Evinrude.
Aftermath
The agreement extended Tohatsu's role as an original-equipment and rebadged-engine supplier in international marine markets.
1988
Create a manufacturing joint venture with BrunswickM&ABackground
Brunswick sought manufacturing capacity for Mercury Marine's smaller outboard products, while Tohatsu had relevant engine-production capabilities.
Action taken
Tohatsu and Brunswick formed Tohatsu Marine Corporation to produce outboards for Mercury Marine.
Aftermath
The relationship made Tohatsu an important manufacturing partner behind some Mercury outboards, particularly in smaller horsepower classes.
1956
Launch the first Tohatsu outboard motorProduct launchBackground
The company had developed experience in compact internal-combustion engines and sought a durable marine application.
Action taken
Tohatsu introduced a 1.5-horsepower outboard motor.
Aftermath
Outboard motors became the central product category associated with the company and were subsequently sold across international marine markets.
1950
Enter motorcycle manufacturingStrategyBackground
Tohatsu sought growth beyond its earlier engine and generator activities during Japan's postwar expansion.
Action taken
The company began producing and selling motorcycles and later expanded its dealer and sales-office network.
Aftermath
The motorcycle business reached a substantial position in Japan during the mid-1950s but was discontinued in 1964 after financial problems.
Recent events
- 2011
Tohatsu and Evinrude agree on smaller outboard engines[1]
Other · Product generation
Tohatsu reached an arrangement with Evinrude Outboard Motors to produce smaller outboard engines, covering engines rated at 15 horsepower and below.
- 1988
Tohatsu and Brunswick establish Tohatsu Marine Corporation[1]
M&A · Other
Tohatsu and Brunswick Corporation formed a joint venture to manufacture outboard motors for Mercury Marine, creating an important production and branding relationship in the small-outboard segment.
Sources2 sources
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