Ive recently acquired a Gravely 260Z for our chestnut tree group.I think she is older but the dealer was not helpful in determing age. Can anybody look this up for me. Gravely customer service is non existent. Believe me ,I tried, The model is 992154 and the serial number is 000632. The closest Ive come to figuring out production year was maybe the first two digits of serial number are the production year. 2000??? Can anyone help here? Kohler engine doesnt have silver label on it either. THX Hawk