Wow if a MF needle is that high I would carry them to a machine or welding shop and have the old ones fixed. Your neighbor could very well be right. Somebody probly went by and twisted the tensioners down while the baler was sitting there empty. I'm assuming that the chains are'nt broken and it's in time. Baling too tight does break alot of needles. Empty out all the grass from the baler, and when you get the needles replaced or repaired do this. Put the needles back in and don't tighten the needle adjustment bolts. Just snug it down so the needle is'nt loose. Get someone to turn the baler over by hand for you. Trip the baler and let them turn it up so the needle is in the very top position. Now adjust the needles so that they are just so ever lightly rubbing the knotter frame. You don't want the needle to drag when it is placing the twine, but it has to touch really really lightly. Then you should have about 1/8" clearance between the needles and the twine disc. The twine disc is where the end of the twine stays caught when the needles go back down. Completely loosen the bale density adjustments at the rear of the bale chute. Run a few bales through the normal cycle without tension to be sure everything is adjusted right. If all is well just enjoy the baling season now.
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