I had a leaky gas tank that needed a quick fix. This stuff called Seal-All seems to work.
After I did an Internet search for a replacement without much luck, I thought I'd look for a repair option. Several positive reviews for Seal-All showed up online, so I picked up a tube at an auto parts store. I applied it to the tank around the edges of the welded bracket. A couple hours later, I refilled the tank and gave the generator another run.
No leaks. I usually don't let gasoline sit in a generator, but I've let this one sit with gas in the tank for a week now. The repair still holds.
Yes, I'll keep looking for a replacement tank. Exact fit or one that can be modified. But until then, Seal-All appears to be solid stop gap fix.