John Deere LA 115 with 42 inch mower deck. I installed new blades and new blade spindles. After re-checking what I did I discovered the idler pulley is loose, the nut is tight though. My question is how much play should be on the pulley?
http://www.greenpartstore.com/John-...eck-Drive-Belt-and-Idler-Kit-GX20072KIT1.html
http://www.greenpartstore.com/John-Deere-Model-LA115-Lawn-Tractor-Parts.html
Your idler pulley bearings are probably worn out, best way to check is remove idlers & check center bearing, should rotate smoothly with no play or drag.