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Re-measured and it was a little better than I had posted, and surface roughness is easily +-0.010 on this, so I called it good and put the cutter shaft back on and it runs very very smoothly! She cuts amazingly well with the new cutters and runs smooth at PTO 540. Here's a video I took running...

Thanks for the replies and for that pdf. yeah, I just finished replacing all the blades and am not about to take them all off again. I have it set up on v blocks with a dial indicator and I'm trying to straighten the shaft by heating the high sides with an oxy-acetylene rosebud (like I read that...

Just got back from the field and it appears to be a bent cutter shaft. I checked with a magnet indicator and it was out at least 1/4" in the center. so I pulled the cutter shaft and I'm going to try and straighten it in the shop. Any tips are appreciated. The bearings had no slop before I...

The problem occurred at all heights but seemed to disappear once I advanced into grass, but then the belt would jump off before I could get to full throttle. Not sure if the belt jumped off because of all the vibration, or if because the idle spring seems a little tired. I think I'll shorten the...

Thanks for the replies, When the bearings go on these things, am I looking for play if I grab the ends of the rotor and yank it back and forth? Or is it more subtle and requires pulling the bearings and doing a visual/feel inspection? I'll hook up a magnetic indicator today and see if the rotor...

Thanks for the quick response - The drive pulley from the pto as well as the rotor pulley all appear to be in good condition, and in-line with the idler, if that's what you mean. But I will double check that today and take some photos. That would be something if the D-rings are incorrect. I was...

Thanks for the reply, will you please elaborate? How are the knife stations screwed up? That photo was in the middle of me replacing the flails. Now they are all new, so they should be balanced, right? And by tire and wheel assembly, do you mean the belt drive? everything is well lubricated...

Here it is while I was switching it over to new flails. Based on the Flail-Master catalog, I spec'd it as fine cut: 92 stations, 184 blades. Mott PN 101993 for the flails, which I bought from R&R products (PN# R400515) because they were a better price than flailmaster. Every flail was replaced...

I just inherited an old Mott flail mower, I think it's model 72, and it has the fine cut rotor. I replaced all the flails and took it for a spin today and it was vibrating like crazy, and as I revved it up, it started vibrating harder and the flails were hitting the surround and sparking. The...