User Review: Ozark Trail Camp Stove
Source: Fixed it for a friend
Easy fix for this regulator problem.
It seems that this regulator has a small plastic button that sits on top of a tire valve held in place by the regulator spring. If droped in a way that causes the spring to move, the button falls off the tire valve.
Remove the threaded insert from the bottom of the regulator with a metric deep socket and shake out the button. put a very small dab of super glue in the button hole and place on top of the tire valve.
When it dries, be sure rubber gasket is in place, apply a little thread sealer, and screw insert back into regulator body.