Green Mods, Gas Mower to LP, H2?

NO, NO, NO, NO, NO propane is NOT a good idea. With a serious conversion kit where fuel can be injected and regulated propane can be injected but not used as a stand alone fuel. Propane is highly volatile. A 2 cycle engine like this could not handle it. For more information check out some of the many sites for propane injection. Besides, propane consumption to gas consumption, where would you save money anyway?