Sounds like the points and/or coil got wet. The gas system should be sealed to water (you didn't pressure wash near the tank fill, did you?). Dry out the points and coil, especially unplug the sparkplug wire from the coil, and dry out the coil. If it ran before, then probably its not the gas.
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John
Proud Owner of a Model 100 and a Model 124.
A homemade cart, 2 x 42" mower decks, a 38" deck,
a 42" front NF blade, and a lawn sweeper!
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