Hey 1985Eagle, finally got a chance to look at the mower again. There seems to be an issue with getting the right amount of tension to move the mower deck's belt/blades., so I think it's either the tension spring or the belt. I say that cause I started it, flipped on the PTO and heard the squealing sound (blades were not moving). At this time I used a 2x4 to push the tension pulley to the right, the squealing stopped and blades on the mower deck began rotating. When I stopped pushing the pulley to create tension, the squealing resumed and the blades stopped turning. Do you think I can rule out the tension pulley? Once again thanks for the help.