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 - Identifying Tractor Noises - by Curtis Von Fange. Listening To Your Tractor : Part 3 - In this series we are continuing to learn the fine art of listening to our tractor in hopes of keeping it running longer. One particularly important facet is to hear and identify the particular noises that our
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