Small Engine Troubleshooting Problems? Ask a Mechanic Now.
Mallard RV? Is this the generator for the motor home? Onan unit? Would have electric fuel pump from tank to carburetor.? Do you hear fule pump running?
Find a voltage source for 12 volts, and go direct to the fuel pump , to see if the engine will run, once the fuel pump is working. Then trace the wiring that goes to the fuel pump, to see why it is not getting voltage.