Fuel System
3-3
Section 3
C280 / S280 / C310 / ST310
Fuel Fills
A fuel fill deck plate is located on each gun-
wale and is marked “GAS.” The fuel fill is
opened by turning it counterclockwise with a
special key. After fueling, install the fuel cap
and tighten with the key; DO NOT over
tighten. Use only the fuel recommended by
the outboard manufacturer; refer to the
engine owner’s manual for additional infor-
mation.
If fuel is added to any other tank, DO NOT
attempt to pump fuel out; these systems are
not designed to pump fuel. Fuel must be
removed by qualified personal only. Fuel in
other systems will also require replacement
of that system and/or many components.
Fuel Vents
There are two fuel vents for the fuel tanks,
one on each side of the hull. While the tank
is being filled, air displaced by the fuel will
escape from the vents. Do not allow fuel to
be expelled from the vents and pollute our
environment. Fill the fuel tanks slowly and
monitor the fuel gauges while filling. Spilled
fuel can be dangerous.
Wash the areas around the fuel fill plates
and below the fuel vents to help reduce dis-
coloration of fiberglass or striping.
Fuel Filters
Fuel filters are located in the machinery
space. The filters are the water separator
type and there is one filter for each engine
fuel line. Check both filters for water fre-
quently to ensure an adequate supply of
clean, dry fuel to the engines. The filter ele-
ments should be changed once a season.
Fuel primers are also built into the top of
each fuel filter.
Turn off all electrical switches before servic-
ing the fuel system and DO NOT drain any
fuel into the bilge. Check all fuel lines and fit-
tings for leaks before and after starting the
engines and after any fuel system service.
Prime fuel system and check all fittings for
leaks before starting the engines.
Fuel Filters
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