Tractor parts, manuals, books and more for the older (pre-1975) tractors. Our free Monthly Magazine is loaded with photos, exclusive articles, free classified ads, forums and more! Yanmar tractors have been manufactured since 1967 beginning in Japan. Yanmar de Brasil was established in 1957 to build diesel engines, with tractors being later added. In 2002, a controlling stake was purchased in Yanmar de Brasil by Agritech Lavrale LTDA, part of Francisco Stedile Group. The tractors were renamed Yanmar Agritech or just Agritech, and joined the Agritech Lavrale group along.