Kern County Tractor Supply :: Agricultural Parts and Machinery

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JOHN DEERE 4020
The John Deere 4020 was in production from 1964 to 1972. The John Deere 4020 was the most popular tractor of its time, and modifications during its lifetime kept it. The 4020 pulled not just a baler, but a baler plus a bale ejector and the trailing wagon to receive the bales. It was an era of greater attention to operator safety features. John Deere engineers developed Roll-Guard (r), the first widely accepted tractor roll-over protective structure (ROPS). In 1966 it was offered on the 4020 and other 'New Generation' tractors. It was an era when business farming required improved traction for 'non-stop' farming. So the engineers developed power front-wheel drive, and made it available first on the 4020. The 4020 saw two other significant steps in tractor evolution. It was originally available in row-crop or standard configurations with gasoline, diesel, or LP-Gas engine (the most popular version was the row-crop diesel).