Hi All. I just picked up an Ariens ST420 second hand. The model number is 932023, and the serial number is 008337. Other than downloading the owner's manual, I am unable to find much information regarding the motor. It is a 4hp Tecumseh, but I am unable to find a serial number on the motor. . The starter/recoil is also broken and does not turn the motor over, but the electric start works fine. I would like to get the starter recoil fixed and replace the belts. Does anyone know the part number for the starter/recoil? Thanks.