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Hi! My name is ***** ***** I can assist you with this. I may need some additional information from you first in order to give a complete answer.
Things that can cause this are low oil, a bad fuel filter that needs changing, a fuel pump that is failing and air flow though the generator that may be partially blocked. Start with the easy ones and then if those prove negative, I would change out the fuel pump. Some can run up to 20 minutes and then shut down and do this repeatedly. Not expensive and if you are handy with tools, not impossible to do yourself. Hope this proves helpful here. Please get back to me if you need more and please include the model number of your generator and whether or not you have the User's Manual for it. All follow ups are included in our fee.
There should be a section in there for trouble shooting. Follow those steps and those I mentioned. Let me know the outcome and model number.
l have to leave for a few hours and will check back in later this afternoon............
I am adding a link to the Diagnostic Service Manual for this model. Print out a copy so you have it. See the trouble shooting sections and do those you can. Then get back to me if we need to go further and you need some help. http://www.generator-parts.com/manuals/generac-rv/0E1881.pdf
I don't think it is in the switch............go to the part about the fuel pump. I think if it isn't overheating due to restricted air flow, then that is the issue.
I will be around all day tomorrow off and on........
Not sure what you mean by that? One reason to give you the Repair Manual is to save time on what and to do the testing. It does take some time and at least a decent VOM meter to do this. The fuel pump really can't be tested when it is failing over a longer period of time. We try to rule out any other thing first. You can run it until it quits and then immediately disconnect the fuel line and try to re-start it and see if it pumps good fuel or not. Not conclusive in all cases though.
Generators are not that easy to work on........but, you should be able to see the fuel line and filter coming to the carb. That should show in the manual and I will look in the morning and maybe I can direct you further. I have been gone all day and just got home and I am ready to hit the hay.
Since I didn't hear back from you I am thinking you were able to resolve this issue, but if not, please get back to me. I will offer you a phone chat option as well as that may help and some of our customers prefer this.
The foam thing would be really rare! In fact, first time I have heard of that in some years. Glad you got it sorted out!
I've been on this site for 7 years and it is only the 2nd time I have heard of it and in my own shop I have only seen it once and it came from the genset sound proofing. Spraying the underside of a motorhome with foam in not commonly done. Glad it worked out though!