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Big Bud Tractor. Big Bud Tractor. 16-V 747 Big Bud The World's Largest Farm Tractor. In 1977 the Big Bud 747 tractor was built in Havre, Montana. The tractor was built by Ron Harmon and the crew of the Northern Manufacturing Company. The tractor was built to produce 760 horsepower using a 16-cylinder Detroit Diesel engine. The tractor measures 27 feet long, 20 feet wide, and 14 feet tall.
Husqvarna Machinery. Husqvarna Group is the worldâs largest producer of outdoor power products including robotic lawn mowers, garden tractors, chainsaws and trimmers. The Group is also the European leader in consumer watering products and one of the world leaders in cutting equipment and diamond tools for the construction and stone industries.