Fuel manufacturers use many different component chemicals in varying quantities and mixtures to create what we all commonly refer to as Gasoline.
Ethanol, IE: Grain Alcohol, is only one of these components and can be found in most common pump Gasoline.
The Yamaha outboard motor and the Parker Marine installed fuel system ( tank, hoses, fuel filter ) is designed to use a gasoline fuel blended with a maximum of 10% Ethanol.
While most of the common blends of gasoline do not exceed more then 10% Ethanol content, we advise the consumer to ask before they pump, to assure themselves that the fuel they are using does not exceed the 10% maximum Ethanol content.
We recommend that fuel tanks be kept full when not in use and that fuel additives be used during the winter months.
Fuel filters should be 10 micron / 90 GPH spin on cartridges and replaced per the engine manufacturers specifications as stated in the operators manual.