Could be that your belts are too long, I parked my old 5800 a couple of years ago, having bought it second hand 27 years back.
I recall that if your rubber rollers were worn out, or if the belts were too long, it wouldn't start to turn. *Also,*: check that the keys are in all the keyways on those four bottom rollers!! (The rollers the bale sits on) If one of those falls out, the botton rollers won't turn, and then it's nearly impossible to start a bale! I've had that happen more than once with mine.
Have parts or the whole baler if anyone needs it, but live up in Alberta.