I nver found that there was much difference in starting power requirement between the 3940/50 and 3960/70 Deere's which are equivelant to the 790 and 900 respectively. In Deere's case I think there's only about 200 pounds difference between those models. The worst thing I found was slugging them. There's ~20% less throat on the smaller machines so when the rolls go full up the smaller tractor just can't pull the slug through on the big machine. Granted, 70 hp won't handle a slug on the 790 either. Capacity would be very, very limited.
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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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