TNT, Go the cheapest route first, try another bulb and hose. They do come bad since most of them are made in China now a days.Next and if that don;t work, get a 5 gallon bucket and just run a line into and it and let it run. If it shuts down, you got a blockage somewhere on the engine. Had a merc that did that. The fuels lines on the motoer dry-rotted in the inside and was clogging-up the carbs. Worst case---fuel pump!

Good Luck!