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No fuel can't start.
All three the Boss, the R Code and the @ Code aren't getting fuel.   Can pour fuel in carb and get it run until all fuel is gone from carb.  Going to get some ethanol free and try running it from a can to test the pump. Any other suggestions?
I prefer to test the output pressure and delivery rate of the fuel pump.
Connect a vacuum pump to the fuel line before the pump to make sure you can pull fuel from the tank.
You can also connect a vacuum gauge to the pump inlet to see if it will create enough vacuum to pull fuel.

“If you can't explain it simply, you don't understand it well enough.”
--Albert Einstein
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