As a new forum user, I have found a host of information concerning the care and feeding of all things Onan! I am looking for any information about the history of this unit. Specifically a build sheet. Serial number is 0574737568. I paid $175 for the generator and the transfer switch. I do know it is a LPG powered motor and the generator is a 12 wire 3 phase unit. There is a label on the transfer switch indicating it was for emergency lighting.
Currently the poor thing will not start but does turn over and develops oil pressure. I will post some pictures as I try to bring this neglected unit back to life.
Thank you everyone for all the information that is contained in these postings.