I have never seen a NH haybine that didnt have serrated sections, and serrated sections are self sharpening. Unless your sections are plain wore out, here are two things you can look for. First are the hold downs holding the knife down tightly to the guards? And second, are the tops of the guards bent away too high from the knife sections? As others have already said, maybe time to just go buy another complete knife assembly. I used to buy a new knife every 2-3 years. If your knife isnt cutting well, or is hard to push in and pull back, then you could have guards that are bent up or down, making the knife run hard. This puts a pile of stress on the wobble box as well as the rubber bushing in the end of the knife. Do you have a guard bender tool ?
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Today's Featured Article - Restoration Story: 1964 JD 2010 Dsl - Part 2 - by Jim Nielsen. Despite having to disassemble the majority of my John Deere 2010's diesel engine, I was still hopeful I could leave the engine-complete with crankshaft and camshaft-in the tractor. This would make the whole engine rebuild job much easier-and much less expensive! I soon found however, that the #4 conrod bearing had disintegrated, taking with it chunks of the crankshaft journal. As a resul
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