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    Carbureted f50 power increase.

    I have a carbureted 1998 Yamaha f50 4 stroke and I have been told it can be upgraded to a 70 by removing a restriction plate? This sounds very similar to the old evinrude’s where you could convert a 9.9 to a 15, 25 to a 35, 40 to a 55, 90 to a 115 ect. I also know the EFI Yamahas can be...
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    1998 Yamaha 50 4 stroke not starting

    So, have a 1998 Yamaha 50 hp 4 stroke. It ran great once….. went to start it, and it took over an hour to get it to run. Now, I can only get it to pop. Here’s the rundown of all I’ve checked….. Compression is good, all cylinders within 2 psi of each other. Rebuilt carbs Replaced all fuel...
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