I had a onan gen set, it was a twin cyl deisel, nothing but trouble , vibration , finally caught on fire due to a fuel leak and i pulled it out and replaced it with a 7 kw gasoline markee, its a really nice quiet little unit and vibration free, i like it so well its going to stay put, onan says its the quietest one out there and i think they are right. i installed a fuel tank in the front bay and it has worked well for me.