RE: How do I test if my fuel pump is working?
Loosen the fuel drain screw in the carburetor. Turn the ignition on (do not start the engine), the fuel pump should now pump more fuel to the carbs. You should also hear the pump running for a while. It's not the ticking sound that comes from the solenoids in the carbs but the other one. Check the fuel filter, it's under the seat and a plastic cover. Also check all fuses. The problem can be the float valve(s) having gunk blocking the fuel.
You could also have an opposite issue with the float valves. If there's gunk they don't close and the carbs get too much fuel (been there).