Youngster, look up the definition of the word "bypass". You will find the term means "to go around or to eliminate from the system" not to push or try to gravity flow thru a disabled vacuum pump. If the tank is higher than the carb and there is nothing but fuel line between them, that Briggs will run. And if the old fuel pump now has no fuel running through it, it cannot be a source of gas in the oil.
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149, 2072, Original, 1772, 1782, #1 cart, Parker 48" sweeper,
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