Hi, I bought this Murray in 1994. Had the motor replaced on it once but otherwise never had the drive belt replaced that I can recall. Today the belt for the deck came off so I drove it to the house but I’m thinking somehow this loose deck belt May have caused the drive belt to come off and it made a screeching sound so I immediately turned off the mower. The drive belt Is off the drive Pulley in the rear. I followed the Diagram and put the belt back on but the pulley drive that moves when you release the brake is now hitting the fan on the transaxle pulley. Is my belt that stretched in a few minutes...or is there an adjustment which moves this brake pulley away from the fan pulley? In the attached pic the pulley 45 is hitting the fan pulley on the transaxle 50 when the brake is released. Thanks!!!