Do you have stabilizer bars on the arms? Mine has a bar on each side on the outside of the arm that goes on the 3-pt pin of the imlement outside of the arm and secured with the lynch pin just like you would with just the arm. Its other end is on a pin below the axle on the inside of the wheel, and secured there by a lynch pin. With both on, the 3-pt is pretty rigid. It is kind of a pain in some cases since these stabilizer bars are homemade and I suspect aren't quite sized right. Some implements mount easily, some I can only run with one stabilizer since the length isn't quite right to get the back end onto the implement pin. Then also, I suspect there's supposed to be some kind of retainer on the arm to hold the stabilizer bar when an implement isn't attached so it doesn't drag on the ground. There isn't on mine, so I have to use either a spare pin and lyunch pin to connect it, or more recently, keep a 3-pt drawbar in plkace when an implement isn't attached. Finally, I have had to change the pins out on some implements because they weren't long enough for both the arm and the stabilizer bar, but that's not a big deal. My bars are around 3/8" thick x maybe 1-1/2" steel bars, slightly bent to clear the tires. Like I said, they are homemade (came with the tractor), but the MF35 parts book shows stabilizers and I suspect you can buy them from your dealer and they'll fit better than mine. Mine also has chain stabilizers that limit how far out to the side each arm can go, but not being rigid, that doesn't prevent the arms from moving independently. For vertical movement, it's true that the arms are free to move up manually because as I understand it, there is no down-pressure on the MF35.
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