Tractordata.com lists your tractor as being produced from 1978 to 1982. You can try www.kubotabooks.com for a user manual, they have a few listed. You can definitely get a parts manual for free at that site i was able to get a workshop manual at www.kubota.servicemanualvault.com for 10$ for my tractor. And you might be ablebto get the users manual at messicks also.