Follow the steps below: – Check the transmission fluid level and make sure it is full. If it is low, fill it up and see if that solves the issue. If not, inspect the drive belt for signs of wear or damage. If the belt looks worn or frayed, replace it with a new one. – Check the transaxle for any loose parts or broken components. If something appears to be out of place or damaged, replace it with an OEM part from your local MTD dealer. If all else fails, consider rebuilding or replacing your transaxle altogether.