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Bought new bearings and removed the spindle. Tested the spindle bearings to see if I could detect any grinding. None detected. Dry fit all of the parts back on the spindle while off the deck and spun the blade counterclockwise to simulate running the blade and see if I could detect any grinding...

Update: With the mower lifted, I slowly spun the blades by hand. I can feel and hear a spot it's catching. I suspect I may have damaged the bottom spindle bearing or possibly both spindle bearings. I am ordering a new bearing loaded spindle and some extra bearings for my original spindle. Also...

I think I just figured out a piece of the puzzle. The blade on one side was broken because of a stump encounter. I think I may have damaged the spindle as it feels like it might be scraping a little. Checking it out now.

I tightened the belt a little yesterday but the squealing kept happening. It sounds like it's coming from the rear of the mower rather than above the deck. The manual indicates the spring tensioner should be .025 - .030 (or about the width of a credit card). I checked it and there wasn't enough...

No chance. I lifted it using a specific jack meant to lift the unit and used only the front tires as a point of contact. I also used a 500lb impact to remove the bolts to ensure the blades didn't spin and then torqued the new blades to 110 ft lbs with a torque wrench after install. This is what...

I suspected this might be the issue. I changed to blades originally because I hit a stump and literally one whole piece of a blade was missing on both sides of the blade (about 2" chunk)

Less than 30hrs on this one but hey, I'll consider it.

First time changing the blades and I wanted to make sure that if I had a failure with my install it would be at lower speed if that makes sense. Once I determined it was OK I cranked it up and mowed for about 5-7 min and then the blades just stopped working altogether in the middle of mowing.

First blade replacement. Went very smooth. Maybe too smooth. Completed the installation, took the mower out for a test-drive, it was working great. About 5min the blades stopped turning. Disengaged the blades with the cutoff switch, took it back into the garage, lifted it and checked the torque...