HOW TO get a large tube into a small hole (Learned the hard way).
Many/most modern small gas devices use a fuel line pressed into a hole in the gas tank. These tend to last only a few years, get brittle then leak at the point of contact.
It's usually impossible to push the proper size tube into the hole, it must be pulled thru the hole.
1) Cut the tube at a 60-70 degree angle.
2) Drill a small hole on the backside of the cut.
3) Insert a small wire into the hole.
4) Fold the wire so it will not come out of the hole. The wire will guide the tip of the tube thru the hole opening.
5) Push the wire thru the gas tank hole from the outside, grab the wire thru the tank filler hole.
6 ) Pull wire, the tube will easily go thru the hole and into the tank.
7) Pull the tube far enough so you can remove the wire.
8) Pull the tube back into the tank until it's about 1/8" above the surface of the tank.
9) Connect other end of tube to carburetor.
10) Done.