Small bayonet gas cap needed

[S854]

Working on my new-to-me Case 130…

it came with a screw on gas cap… which barely keeps the fuel contained only if the tank is less than half full… so I’m looking for a replacement cap…

the fuel tank opening is right at 1 3/16” I.D.


I’ve tried the local auto parts store… closest I came was 1 3/8”…

anyone have a line on small, old school gas caps?

 

[mechanic mark]

https://www.google.com/search?q=METAL+GAS+CAP+1+3%2F16%22+NEEDED&ei=nJBLYYTFKtuXwbkPkr-y0AE&oq=METAL+GAS+CAP+1+3%2F16%22+NEEDED&gs_lcp=Cgdnd3Mtd2l6EAM6BwgAEEcQsANKBAhBGABQ_IMCWKmqAmCGzQJoAXACeACAAaQBiAGxBZIBAzIuNJgBAKABAcgBA8ABAQ&sclient=gws-wiz&ved=0ahUKEwiEg-y6tJPzAhXbSzABHZKfDBoQ4dUDCA8&uact=5

 

[Joed756]

Have you looked at the underside of the cap to see if there is a rotted o-ring, or a groove for an o-ring that is gone?

 

[S854]

The cap that came with the tractor was a screw-on style… something you’d find on a ‘70’s walk behind mower… the only thing keeping it in place was gravity…

I found a cap that I think is gonna work… it’s an “oil filler cap” from an old Buick… that’s how it was listed at NAPA… need to drill a small vent hole in it as it’s a solid cap… it fits well though…