For most bikes, the gas flow from the tank is controlled by a petcock located on the underside of the gas tank. Just turn it to the "OFF" position and you should be able to remove it without spilling any gas. Always, check your manual though, because some tanks have cross-overs that run under the frame down-tube or coils mounted to it.
"What I learned from this thread is that people spell asafoetida "acifidity" -- that is, they don't just pronounce it that way.
I'm no expert, but I think if you put asafoetida in a bag, you've got an acifidity bag.…"
"Thank you guys for the feed back and links. I am going to check out what you all have come up with. Even though I have done some research online on my own, it never ceases to surprise me what other people find when they search too."