All ActivityMost RecentMost LikesSolutionsRe: How to operate a 1987 era OnanI know exactly what you mean by this thing being scary when it cranks.What do you mean by pulling the breakers? How loose or wobbly or whatever would be the right word, is your gen on the mounts? When I grab mine one handed and give it a shake I thought it was going to land on my foot.I want to Thank everybody for their help, I certainly know a lot more than I did.Re: How to operate a 1987 era OnanThis is the info that I got off the genset,I hope the numbers are right they were hard to read. Model-4 obgI 18/26100c Serial # B870874252 and ThanksRe: How to operate a 1987 era OnanI'll sure try it. ThanksHow to operate a 1987 era OnanI recently acquired a 1987 Mallard on a GM Chassis? At least it has a 454 in it.I am trying to test for repair purposes the electric fuel pump on the genset but I do not know how to start the genset or to turn power on to it.It has a dash mounted switch which simply says Generator and when I move it to one of its two positions the Genset starter kicks in, the switch has a red light but nothing out of it. The control panel on the Genset has a switch this is also a two position , but all it says is stop and start.I would certainly appreciate it if someone could clue me in to how this critter is supposed to work.I have tried on the internet but no luck I did find a cd that claimed to be an owners manual but when I went to the section for generators it said to see your Onan Manual and when I go to the Onan section it tells me to see owners manual