cycle the electrical connectors to the carb.

It's a feedback carb, with a mixture solenoid valve that controls about half of the fuel supply. It really should have a ohtwo sensor on the downpipe.

I suspect a clogged jet in the carb, perhaps the idle jet, or a stuck float that is dumping fuel and making it too rich.

If the mixture is off, you should be able to smell it. Starving for fuel will make the exhaust eye burning acrid. Over rich will smell like unburnt gas at the tailpipe. You need an assistant to keep it running while you do the sniff test.

One further thought. Test the throttle position sensor.