What I found rather dumb is that on my snowblower carb bowl I have one of those spring loaded fuel dumper things but no shut off on the fuel line. Kind of useless unless you run out out of fuel at just the right time. I'm going to install an inline shut off.
Another update: I had such great success on my snowblower I went to work on my pressure washer. I had a little different carb issue as it would start and immediately stall. I pulled the carb this morning and recleaned all the ports but they seemed fine. What I found was the bowl gasket was junk which didn't allow the fuel to be sucked up cuz of the leak around the seal. It wouldn't leak fuel out of the bowl because the float worked fine and stopped the bowl from overfilling but air leaking through that gasket would not let the carb pull up the fuel. Just an FYI for you tinkerers as this one had frustrated me for a while. Runs like a champ now. 2 for 2 in 2 days!