I am about to give up. 1999 Grasshopper 721d2 upper idler arm Assembly is loose and rattles from side to side when running. I tried to take it off, but the bolt just turns and does not come out. I can only assume that there is a nut on the end of the bolt that holds the arm, but I cannot find it. My grasshopper has the lift kit for the front deck, so it had the additional hydraulic pump. Does anyone know how to get the idler arm off of the grasshopper.