My LHS suggested removing the fuel line all together from the Carb, as that would be basically the same thing as pinching the fuel line, but the all mighty manual says not to let the Engine run out of gas, so isnt pinching the gas line off, running the Engine out of gas? lol, im not rocket scinetist but ....*shakes head*.. I dunno, I will try the flywheel thing, that sounds most logical..