2004 SR Johnson 2-stroke 40, 50HP Service Manual, Page 49Get this manual
INSTALLATION AND PRE DELIVERY FUEL REQUIREMENTS
FUEL REQUIREMENTS
WARNING
Gasoline is extremely flammable and highly explosive under certain conditionsFollow the instructions in this section explicitlyImproper handling of fuel could result in property damage, serious injury or deathAlways turn off the outboard before fuelingNever permit anyone other than an adult to refill the fuel tankDo not fill the fuel tank all the way to the top or fuel may overflow when it expands due to heating by the sunRemove portable fuel tanks from the boat before fuelingAlways wipe off any fuel spillageDo not smoke, or allow open flames, or sparks or use electrical devices such as cellular phones in the vicinity of fuel leak or while fuelingAlways work in well ventilated areaEvinrudeJohnson outboards are certified to operate on unleaded automotive gasoline with an octane rating equal to or higher than that specified in Minimum OctaneWhen using gasoline that contains MTBE or alcohol, follow these guidelines: