I am looking at a used Turf Tiger with 72" deck and Kubota diesel. I haven't seen it yet because the dealer has it out on loan. The dealer says he can't read the serial number to confirm what year it is and it doesn't have a hour meter. Is there anything I can look at to tell approx what year it is? I had assumed that all Turf Tigers would have come with hour meters. What year did they start using the Kubota diesel? If there isn't an hour meter could this be an indication of what year it is.