Gravely ZT 50 Belt Keeps Breaking
I have a Gravely ZT 50 and the deck belt started coming off a few weeks ago. I replaced it a few times before it finally snapped and I bought another one. The second belt lasted about 2 hours before being shredded. From what I can tell all of the pulley are tight and spin freely with no wobble. The blades are straight and not bent and they spin freely and smoothly also. When I put the current belt on and engaged the blades, the belt began to vibrate excessively. I stopped it immediately and began to look closer at the idler arm. There is some play, but minimal. I took the assembly off of the mower and examined the washers, bushings, bolt, etc. and there is some wear but nothing major. I am looking to replace the hardware including the idler spring, but not sure if this will help much. I welcome any advice you may have. Thanks!