John Deere 8650 Price, Reviews, Specs, Engine Oil Capacity, Weight, Serial Numbers, Attachments, History, Features & Pictures The John Deere 8650 was the middle model of John Deere's 50-series four-wheel drive (4WD) tractors that were first available in 1982. Efficiency was the promotion focus, noting that these tractors could be used during the season, not simply for … [Read more...] about John Deere 8650 Price, Specs, Review, History