Owner`s manual

3-2
Section 3 Fuel System
OS 285
Fuel Vents
There are two fuel vent fittings for the gaso-
line fuel tanks, one on each side of the hull.
Air displaced while fueling escapes through
the vent. After fueling, replace the fill cap
and wash the areas around the fuel-fill plate
and below the fuel vent. Residual fuel left on
the deck and hull can be dangerous, and will
yellow the fiberglass or damage the striping.
3.2 Fuel System
Fuel Tank and Valves
The outboard fuel system has two fuel tanks
and five manual “ON/OFF” fuel valves,
including one for the optional generator.
Refer to the Schematics section of this man-
ual. Fuel valves are located through the
hatch in the cockpit floor. The valves are
“OFF” when the handle is perpendicular to
the fuel flow. The fuel valves allow the oper-
ator to run the engines from both tanks or
from either the aft tank or the forward tank.
The starboard fuel fill feeds the forward tank.
The port fuel fill feeds the aft tank.
During normal operation, the port engine is
supplied fuel from the aft tank (port) and the
starboard engine is supplied fuel from the
forward (starboard) tank. The fuel valves on
each tank are labeled port (red band) and
starboard (green band). The labels refer to
the engine the valve supplies. If a fuel sup-
ply problem occurs in one of the fuel tanks,
both engines temporarily operate from either
the forward or the aft fuel tank by opening
both valves on that tank. Operating the boat
with all four fuel valves open isn’t recom-
mended and should be avoided.
Engines will not draw fuel equally from the
fuel tanks when the fuel valves are set so
both engines are operating from both tanks
(all four fuel valves open.) This can result in
one tank running out of fuel, while the other
tank is partially full, causing fuel supply prob-
lems.
Fuel withdrawal lines are equipped with anti-
siphon valves at the attachment point of the
fuel tanks. Anti-siphon valves prevent gaso-
line from siphoning out of the fuel tank
should a line rupture.
Gasoline Fuel Filter
Installed in the aft bilge area are the fuel fil-
ters, accessed by removing the fish box. The
filters are the water separator type and there
is one filter for each engine fuel line. Check
each fuel filter for water frequently to assure
an adequate supply of clean, dry fuel to the
engines. Inspect the filters periodically and
change the elements once a season.
Fuel Filter (Typical)
! WARNING
Do not remove anti-siphon valves
from the fuel system. Should an anti-
siphon valve become clogged, clean
and reinstall or replace. If a fuel line
should leak, anti-siphon valves pre-
vent a substantial amount of fuel from
flowing into the bilge. The U.S. Coast
Guard requires all gas-powered boats
have anti-siphon valves.