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The M was the second John Deere tractor to use a vertical two-cylinder engine, after the LA, but the first to with a square bore to stroke ratio of 4.0 in × 4.0 in (102 mm × 102 mm) 100.5 cu in (1.6 L) with a high row crop. John Deere A 1939-1952; John Deere B 1939-1952; John Deere H 1938-1947; John Deere D 1939-1953; John Deere G 1942-19
A PTO at the rear end of a farm tractor A PTO (in the box at the bottom) in the center of the three-point hitch of a tractor. A power take-off or power takeoff (PTO) is one of several methods for taking power from a power source, such as a running engine, and transmitting it to an application such as an attached implement or separate machine.
Late 1938 models were restyled in line with other Deere tractors, with Henry Dreyfuss cowlings and grilles. In 1940. the 14-horsepower (10 kW) LA was introduced, using a John Deere engine, and the L received a Deere engine in lieu of the Hercules. The LA introduced a power take-off to the L line. Both the L and LA were produced at the same time.
Deere & Company, doing business as John Deere (/ ˈ dʒ ɒ n ˈ d ɪər /), is an American corporation that manufactures agricultural machinery, heavy equipment, forestry machinery, diesel engines, drivetrains (axles, transmissions, gearboxes) used in heavy equipment and lawn care equipment.
The A was produced in a wide variety of versions for special-purpose cultivation. It received a styling upgrade in 1939 and electric starting in 1947. With the advent of John Deere's numerical model numbering system, the A became the John Deere 60, and later the 620 and 630, 3010, 3020, 4030, 4040, 4050, 4055, and ended with the 7610. [1]
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In addition to being the first Deere diesel tractor, the R was the first to have a "live" power take-off, with its own clutch allowing independent control of the PTO. A cab option was available for the R. [1] [2] [3] The Model R was produced at the John Deere factory in Waterloo, Iowa. 21,293 were built, at a selling price of about $3,600. [4]