Re: 1977 Evinrude 9.9 10724A carb leak

[Don]

I’m not quite sure just what vertical passage it is that fuel was spilling from, but am guessing it was the bowl vent. I’m guessing the inlet needle was a bit stuck/gummed up causing the carb to flood. Once you got it running, and fresh fuel pushing through, the issue rectified itself. But, I’m sure you are correct, the carb is probably a bit gummy, which will eventually lead to more issues.
Nonetheless, I would not argue with success, doesn’t sound like your friend is too interested in routine maintenance (paying for it). Don’t worry too much about those rusted coils, a fairly normal condition on salt water engines. And, just because the coils look like crap, does not mean they are broken/need to be replaced. Some of these coils even show cracks but do not leak. I’m sure your friend will be back if ignition problems develop.
Your friend is making a mistake if he doesn’t invest in maintenance on this engine, these engines are tough to replace these days.
One final note, this engine is not subject to the imfamous upper water tube issues. These early models had a different grommet design which was not problematic. But, be very careful if you decide to get involved with servicing this salty dog, I don’t want you left holding the bag with broken bolts resulting from a lack of proper maintenance.