You can find a Workshop Manual (WSM) for your tractor at "KubotaBooks" here (about 16th up from bottom) http://kubotabooks.com/AutoIndex/in...s/&AutoIndex=8358d660eeca4c42ec911e146c865b56 The section on steering starts around page 388. I don't know if there are any tools (wrench sizes) mentioned, but the tightening torques may be helpful.