SOUNDS LIKE U MAY HAVE A BAD IDLER PULLEY. VISULEY CK ALL UR PULLEYS FOR A BENT ONE OR BAD BEA. COULD ALSO BE A SPENDLE SHAFT BENT OR BAD BEA. THERE ALSO IF ITS UR BLADE BELT WE ARE TALKING ABOUT. I HAVE HAD A ROCK EVEN GET LODGED IN A PULLEY BEFOUR. SO VISULEY INSPECT ALL PULLEY REAL GOOD OK.
DENNIS, May 2008