https://www.vpowerequipment.com/three-fuel-carburetor-allows-firman-generators-to-run-on-gas-lp-gas-or-natural-gas-1/?gclid=EAIaIQobChMI1beLtqb07gIVifDACh00NggXEAQYAiABEgLKyvD_BwE
I have a three fuel generator!