The Second Number Series

Now I'll tell you a little bit about the John Deere tractors that replaced the "First Number Series". Below, you'll find short descriptions of the tractors in the "Second Number Series", sometimes referred to as the "20" Series. The biggest visible difference between this entire series and its predecessors was the new, two-tone, green and yellow paint job. The entire series was produced from 1956 to 1958. These are listed in the order in which they were introduced.

MODEL 520 The 520 was the successor to the Model 50. The entire "20" series was produced from 1956 to 1958. The new "Float-Ride" seat was introduced on these tractors. MODEL 620 The 620 replaced the Model 60. The engines were completely redesigned to provide more horsepower. MODEL 320 The 320 was new. It was a slightly lighter version of the 420. MODEL 420 The 420 replaced the Model 40. The 420C was the crawler version of the 420. MODEL 720 The 720 replaced the Model 70. Of course the 720 was again available with a diesel engine. MODEL 820 The 820 replaced the 80, but it originally came out with the same engine. It was a diesel standard-tread tractor.

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