Onan generator shuts down

Why it can repeatedly take 20 minutes for the problem to show up is a mystery to me.

Here is why I think it takes 10 – 20 minutes for generators to shut down when they have a clogged filter or cracked fuel hose. The carburetor has a carb bowl that contains a few ounces of gas. The generator feeds off the fuel in the carburetor bowl and if you cut the fuel supply the fuel in the bowl will allow the generator engine to run for a few minutes.. The cracked fuel line, or clogged filter, doesn’t allow enough fuel to flow into the bowl to compensate for the amount of fuel the generator engine needs to run. It is providing some gas, just a reduced amount. After about 10 – 20 minutes (dependent on how clogged the fuel filter is or the amount of air being dragged into the fuel line) the bowl runs low enough to starve the generator’s engine. Hence you are good for about 10 – 20 minutes. Some ideas on how to distinguish if your fuel line, fuel filter or fuel pump is the problem would be of great benefit to many on the forum.