Possibly someone modified the linkage to divert all hydraulics to the loader, just a guess.
But inside the right cover, below the seat, is the linkage to control the lift. Open the cover and see if anything looks out of place. The roller lever that extends up from the pump is what controls the pressure to the lift cylinder. When functioning properly there is position control and top limit control so the pump never deadheads. The roller only moves a fraction of an inch to raise of lower the lift.
Here is some info on it, a shop manual would be a good investment. Be extremely careful not to reach in there with it running!
Might post on the MF board for more specific instructions.
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Today's Featured Article - Tuning-Up Your Tractor: Plugs & Compression Testing - by Curtis Von Fange. The engine seems to run rough. In the exhaust you can hear an occasion 'poofing' sound like somethings not firing on all cylinders. Under loaded conditions the tractor seems to lack power and it belches black smoke out of the exhaust. For some reason it just doesn't want to start up without cranking and cranking the starter. All these conditions can be signals that your unit is in need of a tune up. Ok, so what is involved in a tune up? You say, swap plugs and file the points....now tha
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