Moderator Post: >I am guessingbyHandyman on 06/23/2009
WITH MOWER IN NORMAL POSITION(NOT STANDING UP),REMOVE BELT COVER COMPLETELY(MAY HAVE TO REMOVE RUBBER HANDLE COVER FROM BLADE ENGAGE HANDLE). LOOSEN IDLER PULLY NUT(ON BOTTOM OF SMALL PULLEY) MOST OF THE WAY. PULL OLD BELT OUT FROM BETWEEN IDLER PULLEY AND PULLEY BRACKET AND THEN FROM AROUND REAR PULLEY. PUT NEW BELT AROUND REAR PULLEY FIRST, THEN SQUEEZE BETWEEN IDLER PULLEY AND BRACKET. IF NECESSARY, YOU CAN START ON MAIN FNT PULLEY THEN TURN PULLEY TO "PULL" THE BELT IN PLACE. WHEN ENGAGED, BELT SHOULD HAVE ABOUT 1 AND 1/4 GAP BETWEEN THE TWO SIDES. IF NOT CORRECT, MUST SHORTEN OR LENGTHEN THE ENTIRE MOWER BY LOOSENING THE CLAMP ON THE MAIN TUBE UNDER THE SEAT SPRING. USE CROW BAR AT REAR OF TUBE TO LENGTHEN MOWER. DONE.