Fuel doesn't shut off when my Poulan lawn tractor (w/Briggs & Stratton 16.5 HP) engine is turned off. I'm not sure if the problem is a) fuel shut-off solenoid; b) float level off or float valve won't close; or c) I connected a hose from the engine crank case (breather?) to the top of the carb that appeared to have come loose. Perhaps I shouldn't have connected it. danny_glaser@yahoo.com