I had built one of these years ago and then I saw a guy at the petrol station with a dodgy looking one. I thought there must be a calling for something like this so here is how to make one.
Step 1: Things You'll Need
First a list of things you will need:
Jerry can lid
19mm drill bit
1 1/2 brass nipple
2 1/2 brass nuts
1/4 turn gas tap
3/4 hose barb to thread fitting
Fuel resistant gasket sealant
Follow these steps:
Hopefully this can help you out.