FUEL SYSTEM Each time you fuel up, inspect the fuel lines, connections and fuel tanks for tightness, signs of leaks and deterioration. At least annually, conduct a more thorough inspection of fuel system components, especially those hidden from a routine inspection. Replace any deteriorated components. Portable fuel tanks should also be inspected frequently for leakage along seams and at engine and tank connections. Portable tanks should be placed flat on the deck to prevent movement and should not be rested on or against fuel lines.
WARNING
Do not attempt to repair a leaking fuel tank or hose - replace it. Keep your fuel tanks full during storage or periods of infrequent use to prevent condensation of water vapor and subsequent engine malfunction, if you are sure your fuel does not contain alcohol. But alcohol-containing fuel particularly absorbs humidity and it will separate from the fuel as the temperature drops during winter months, causing corrosion. Fuel tanks should be empty during storage if your fuel contains alcohol. Leaking gasoline is a fire and explosion hazard. The fume-exhausting action of the bilge blower and the natural ventilation which takes place when your boat is underway will remove the fumes, providing there is no leak of fuel to constantly replace them. But under certain wind conditions, fumes may tend to stay in the boat longer, even when the blower is running. It’s a good idea to open up all hatches to allow compartments to air out before starting and keep them open until the boat is underway. Do not paint aluminum fuel tanks with anti-foulants containing copper. Severe damage can result from galvanic action. Outboard 2-cycle engines should use either TC-W II® or TC-W3™ NMMA-certified oils. This applies to Personal Watercraft also. Check owner’s manual for specific manufacturer recommendation.
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