This is something that happened to me last night. We had no sun yesterday at all, so last night about 6pm, I went out and started my 5.5 gas chinese screamer to charge up my batteries. No problem, even though this gennie is about 6 years old. At about 7:30, I went out and shut it down. As normal. Then about 8:00 pm, my wife and I took our dogs out for their evening "last call". My wife has a nose that can smell an ant fart at 1,000 yards. No joke. Anyway, as soon as we went out, she said she smelled gas. As we walked around the house towards the back, she said the smell was really strong. As ususal , I still smelled nothing at all. Well, she said , go check out the gennies. I did. As I walked up to the lean too where the gennies are, I even smelled gas. Upon further examination, I discovered that the plastic gas tank over the gennie had let go and the gas was dripping very fast out the bottom. Using a couple of coffee cans, and cutting the gas line from the tank, saved most of the gas. Bottom line, those plastic gas tanks, have an expansion fitting in the bottom which is also plastic, and given time, can let go. I doubt if I can find anything to repair it with, which means I will have to scrounge another gas tank for it like my Kohler. The tank for my Kohler is a steel tank made for a boat. They work well and are much safer then the plastic stock fuel tanks on most of these gennies. something to keep in mind for all of youwith this kind of tank. You never know when one of them will let go. The lean to with all three of my gennies in it, is at the end of my solar building. Should the tank have let go when the gennie was running, all my solar and other gennies would be toast ! Check your tanks out on a very regular schedule. Especially inspect the fitting at the bottom of the tank where your gas line is mounted from.