[alanmcorcoran]

Virati,

Riding with the choke on, once, for thirty minutes, is not going to royally mess up your bike. I suspect that some other issue that was lurking in the background, reared it's ugly head at the same time the choke got stuck.

Fortunately, it's easy to check the plug. It'll probably be fine, and then you'll have to move on to more difficult things.

If it's clean and dry, you can check it for spark. Be careful you don't shock yourself if you are using the poor man's spark tester. (Look on the Internet for best practices.) The poor man's spark tester also verifies that juice is coming down the plug wire.

(If you have a feeler gauge, you can check the gap too, but if it was working good up til yesterday the gap is probably fine.)

If the spark plug is good you probably have some kind of a fuel problem.

I've not had to go that far, but others have posted info on here about checking for fuel reaching the cylinder, cleaning the carb, unclogging the fuel line, unclogging the gas tank, fixing the "reserve tank" tube (Have you tried switching to "reserve"?)

Unfortunately, most of those things require more work and more skill.

Let's hope it's just a 3 dollar spark plug.