The Model 40 - John Deere Model 40W 2 Row Utility Row Crop ... Review
Model 40W Row Crops were the last model introduced in the John Deere line of 40 tractors. The serial number plate on these tractors state "40-W" . This was a two row tractor, popular with many farmers for a variety of jobs. The 40W did not have far to go when it evolved into the 420W.