John Deere introduced three new models of tractors in 1970 for the 1971 model year. The 4320 and 4620 were 2-wheel-drive, row-crop tractors, rated at 115 and 135 PTO horsepower, respectively.

Usually the eye popping auction sale prices on John Deere 4020 tractors are on 1972 or 1971 models. But not always. Saturday (October 21, 2017) on a farm auction in Mt. Washington, KY, the 1964 ...

John Deere’s latest self-driving tractors have AI vision. Skip to main content. The homepage ... The driver — sitting in the cab of their tractor — can then oversee this path and correct it ...