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730
The 730 has about 53 hp and held the record for the most economically friendly tractor for 27 years and It ran off of any type off gas -
8010
The 8010 was the first successful four-wheel drive with It being made for power it has 215 horsepower although it was a pricy tractor about 100 of them build in Iowa -
4020
The 4020 was made in 1964 and it dominated the tractor industry up until about 1972 the tractor has 85 horse power they were made to pull and to top the industry. -
4230
The 4230 came along and made a new record for the most horsepower, it has 100 horse power and it uses 7.1 gallons of gas an hour while running at full power. -
4450
The 4450 was made in 1983 and has 140 horsepower and it has a option for a front loader too. It also has a 16 speed power shifter. -
8300
The 8300 was made in 1995 the john deer company claimed for it to have 200 horsepower but when the tractor got tested it actually has 230 horse power -
9520
The 9520 was the biggest advance for four-wheel drive tractors because it introduced a better transmission so you can just press a button instead of using the medial levers to shift -
9RX
The john deer 9RX came out it was ground breaking because with the tracks on the four wheel drive it can bring in a woping 620 horsepower and
