Boston Whaler 37 Justice Series, Operation & Maintenance Manual

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3-15
F uel System Section 3
If E -1 0 gasoline absorbs enough moisture, it ca n suffer
phase separation. The ethanol and water mixture will
fall out of suspension and co llect in the lowest parts
of the fuel system. The ethanol and water mixture
can damage engines, clog fuel filters, and corrode
metal fuel system parts. F uel tanks with E -1 0
gasoline should always be ke pt as full as possible to
reduce exposure to moisture from co ndensation and
humidity.
Conce ntrations of ethanol greater than 1 0 % ca n
ch ange the physic al properties of some rubber and
plastic fuel system parts such as gaske ts, hoses,
tanks, and filters. Regularly inspect all non metal fuel
system parts for signs of swelling or deterioration. In
some extreme ca ses, rubber parts such as hoses and
gaske ts c an act ually sweat liq uid gasoline. B e alert
for the odor of gasoline or small droplets of gasoline
near these parts.
Always have fuel system repairs performed by a
qualified marine technician.