This was a serious question. I inherited...
This was a serious question. I inherited the thing and I do not know how to adjust or turn the thing on, Have a canister, extra sock and no manual.
The grey button on the side next to the valve should be the piezo-ignition button, and should spark and light the lantern when attached to the gas canister. I say should because I've been less than impressed with auto-ignitors across the board, and while I haven't used this one specifically, I would guess that it works the same third of the time as all the others. You could also try matches or a lighter, but be careful, and make sure the flame is near the jet before you open the valve so it doesn't make a giant flame and burn the hair on your hands off. Wow, that doesn't sound like experience talking at all:)