I am trying to settle a estate for a friend and there are 2 small generators to start
A generator works using 3 components: an engine(gas, diesel, or LP-gas powered), the generator, and the control unit. The engine runs at a preset RPM to spin an armature inside a magnetic field, thereby producing an AC current. The AC current is then sent through the control panel/curcuit breaker box, where it is regulated and then finally used to power the house, boat, or whatever it is used to power. The actual worth of the two generators varies on what kind of fuel they run on, the engine size, the wattage, and hours of usage.
Onan is the name of a company that manufacturers generators. Usually small generators for emergency / camping /RV's. A small 8 - 15 hp gasoline engine and a generator. Either electric start or pull rope start.