Fuel.vents; Anti-Syphon.valves - Four winns 318 VISTA Owner's Manual

DO NOT confuse FUEL deck fill plate with
WATER or WASTE deck plates. Deck fill
plates are labeled according to the intended
use.
The gasket/O-ring seals on the fuel fill cap assist in
sealing.when.closed..A.missing.or.damaged.O-ring.
can.allow.water.on.the.surrounding.surfaces.to.run.
into.the.tank.
Periodically.inspect.the.cap.and.the.fuel.deck.plate..
The.O-ring.seal.should.be.inspected.for.cracks.or.
damage.and.replaced.as.necessary..Lubricating.with.
a.light,.waterproof.oil.or.grease.is.recommended.and.
can.extend.the.O-ring's.longevity.
C. Fuel Vents
On.the.318.Vista .separate.thru-hull.fuel.vents.are.
®
installed. See Figure I-3. While the tank is being filled,
the.air.displaced.by.the.fuel.escapes.through.the.vent.
overboard.
Spilled fuel is a fire and explosion hazard.
DO NOT overfill or overflow the tank, or allow
fuel spills into the hull or bilge. If spillage
occurs, clean up immediately and dispose
of soiled rags/towels in a proper container.
Avoid overboard spills. When tank is almost
full the sound from the fuel vent will change.
The pitch will become higher indicating the
tank is close to being full. Stop pumping fuel
into tank. Do not top off.
NOTICE
When fueling at a marina, DO NOT overfill.
Fuel may spill into the water.
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.sides.can.be.
dangerous, and will yellow the fiberglass. It will also
damage.the.tape.stripes.and.logos.
For.those.models.with.thru-hull.venting,.periodically,.
inspect.the.fuel.vent(s).for.any.dirt,.wax,.etc..Carefully.
Fuel Systems - Section I
remove.any.obstruction.with.a.pipe.cleaner.or.similar.
device..Be sure not to puncture the screen..The.
vent.screens.are.designed.to.keep.insects.and.foreign.
matter.from.contaminating.the.fuel.and.fuel.system...
The.stainless.steel.cap.is.not.removable..
D. Anti-Siphon Valves
The.fuel.withdrawal.line.is.equipped.with.an.anti-
siphon.valve.where.the.line.attaches.to.the.fuel.tank...
The.valve.prevents.gasoline.from.siphoning.out.of..
the.fuel.tank.should.a.line.rupture..See.Figure.I-4.for.
anti-siphon.location.
Figure I-4: Fuel Tank Fittings
DO NOT remove the anti-siphon valve(s)
from the system. Should the valves become
clogged, clean and reinstall or replace.
The fuel withdrawal is positioned in the fuel
tank to achieve optimum fuel usage, and fuel
line routing. At certain speeds and hull trim
angles, the fuel supply at the withdrawal can
increase or decrease accordingly. Be extremely
careful when attempting to operate the boat on
a minimum amount of fuel. Though some fuel
may be in the tank, the relative trim angle of
the boat may cause the fuel to flow away from
the withdrawal.
NOTICE
On all Vista models, access to the anti-siphon
®
valve and fuel sender is by either an access
plate or through the engine compartment.
Owner's Manual Page 0