Are you able to determine if the carb is pulling fuel from the tank ? If not ...
Common issues are:
Fuel tank internal plumbing problems .
Dry diaphrams in the carb .
Pulse hole blocked , failed gasket(s)or cracked carb insulator block.
Inspect all fuel lines and fuel tank internal lines . Be sure all connections correct and are tightly sealed .
Inspect the carb block and gaskets . Be sure the pulse passage is clear and all gaskets align with it .