Reply To: Vintage Handitwin tank

[Buccaneer]

I had luck once with a aluminum gas tank filler neck that was pushed down by
attaching a piece of pipe or rod to a fitting that screwed in or on the
filler hole, and gently using a torch to heat the area up while pulling
out the pushed down filler neck.
It wasn’t “perfect” , but a lot better.
Of course, torches and gas tanks can present a problem if all safety
precautions aren’t followed!

Prepare to be boarded!