Generally speak'n from experience, First you need some idea of "what" should be there. This comes from experience, I bought a nice lookin Mc drill only to find the closers where not there. At the price it would of been a good deal after acquiring parts it may not have been. (although it worked out in my case) So you need to have a good idea of what you are lookin at. Second, General condition, is everything that should be tight, tight? Are there any obvious rust holes or broken brackets. I spotted a NH 65 the other day and from the road it looked pretty good. upon closer inspection the pickup chamber didn't have a bottom in it (all rusted out). Third a few special areas, Needles - New or welded, why? it could be as simple as they have fixed it up, but could also be they can't keep from breakin them. If not new look at the eyes, are they grooved? Excessive wear could lead to tie problems. Knoters - New or badly worn, Again why? Have they fixed it or have they given up? Worn shafts and hooks will not tie properly and soon need replaced. Chains & Gears - wear, look at the teeth on the gears are they worn down to a nub. Are the tensioners all the way out? Stretched chains. This could affect timing and cause a multitude of problems. Plunger - Guides, roller or slides, look for wear, side play. Does it move freely? Operation - Rotate the fly wheel, does it turn freely? Are other parts moving? Everything should move - Plunger, auger or rakes, Pickup teeth. Last and most important - Don't take their word for it. Ever notice that most ads say "did 1000 bales with only 3 misses" Sure it did, and I get my money back if it misses 4? Nope that's why they all say "as is where is". If at all possible have them show you it works by using it. There are so many things that could be wrong and you will not see them. Like a broken spring on a lower hay dog that is suppose to prevent the hay from uncompressing and blocking the feed chamber, causing the baler to clog excessively.
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