Re: 1958 Evinrude 35 HP Flooding

[opposedtwin]

Going through the carb completely is a must unless you know it was done by a competent person relatively recently. The float needs to actually float, though if it didn’t, you would almost certainly be unable to start the motor. But, make sure it is parallel to the carb body upon reinstallation. Make sure your needles are serviceable and are not wandering (packing/packing nuts would be the fix there). Replace the valve/seat unless you are crrtain they’re serviceable.
Not sure if the fuel save option could be a culprit here or not. Make sure it is set properly as it is part of the relationship between spark advance and fuel (throttle).

The ’58 model is a bit like a unicorn in my experience. While the Johnson version is very plentiful, I have only seen a handful of the Evinrudes. It’s a beauty! Is it an e-start model?
Scott