THere are substantial differences. Attachment points were about the same, but the top cover (I think) and the draft control system and many pivots and a "hitch angle cylinder" on the front right side that lays parallel to the ground, were way different. The 450 draft control was modestly effective and was a lever on the left of the platform to the rear of the TA. The 400 had no real draft control, but the tilt was very handy when using plows and disks to level the implement. It also let the hitch raise the implement much higher (in the back, trailing end)than on a 450. Look at the parts diagram to see a comparison. JimN
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Today's Featured Article - The Mud Daubers and the Old John Deere - by Jon Zehnder. I have a 1941, John Deere Model A tractor I have owned for about a year and a half. This is my first (in case my wife reads this, "FIRST") tractor and it has been a learning experience. After considerable advise and assistance from local tractor nuts and the forums of Yesterday�s Tractors, I had finally got it running pretty well. I have tuned it up, overhauled the carburetor, installed a borrowed, rebuilt magneto, installed a new Power-Trol, patched the radiator, installed new front wheels a
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