Fuel tank screw hole repair

[Normagain]

For what it's worth, I have a friend that patched a hole in his small outboard water jacket with PC7 Epoxy and it is holding after several years much to my surprise. There is a PC11 that is supposed to be better for aluminum. Much better than JB Weld for this sort of thing but if over drilling the sender is possible, I'd definitely do that.