Four winns 318 VISTA, Owner'S Manual

Page: 85 / 236

Owner’s Manual Page Fuel Systems - Section I
Dealers are equipped with some general figures on
consumption.which.can.be.used.as.a.guide.until.
specific information on your boat is determined.
Because.of.boating.conditions,.speed,.weight.and.
other.factors.common.to.your.situation,.fuel.consump-
tion.will.vary.between.your.boat.and.consumption.
figures developed by Four Winns. When the fuel
gauge begins to register below the “full” mark, the
gauge readings will drop much faster until it reads”
empty”. When this occurs, the trim angle has affected
the.sender.reading..When.the.gauge.registers..
“empty”, the sender has bottomed out and there may
be.3.to.4.gallons.of.fuel.in.the.tank..See.Figure.I-7.
Figure I-7: Trim Angle Effect with Low Fuel
G. Fuel Filters
Fuel filters are installed on each engine. Filters should
changed.frequently.to.assure.an.adequate.supply.of.
fuel.to.the.engine..Refer.to.the.engine.manual.for.
additional.information..The.engine.manual.is.included.
in.the.owner’s.information.packet.
NOTICE
Canister-type filters should be changed
annually.
H. Gas Vapor Detector
A.gas.vapor.detector.is.optional.on.the.318.Vista
®
.
models..The.gas.vapor.detector.will.monitor.the.
engine.compartment.and.notify.the.operator.of.an.
accumulation.of.gasoline.vapors..The.operator.must.
take.immediate.action.upon.warning.to.avoid.the.
possibility.of.an.explosion.
The.sensing.unit.is.usually.mounted.towards.the.rear.
of.the.engine.compartment..The.alarm.unit.is.mounted.
at.the.dash..
E. Fuel Gauge
The.fuel.gauge.indicates.the.amount.of.fuel.in.the.fuel.
tank..See.Section.E-9F.-.Fuel.Gauge.for.additional.
information.on.fuel.gauge.use.
F. Fuel Senders
The fuel sender consists of a float which travels up
and down a stationary tube. The float measures the
level.of.the.fuel.in.the.tank.and.sends.a.signal.to.the.
fuel.gauge..See.Figure.I-5.
.
.
Figure I-5: Fuel Sender Operation
Due.to.the.mechanical.nature.of.the.fuel.sender,.varia-
tions.in.readings.during.various.speeds.of.operation.
may.occur..This.system.is.merely.a.relative.indication.
of.the.available.fuel.supply.and.not.a.calibrated.
instrument..With.this.type.of.sending.unit.a.more..
accurate.measurement.of.fuel.level.is.obtained.with.
the.boat.in.a.level.position.
The.gauge.readings.will.also.vary.with.the.trim.angle.
of.the.boat..When.sitting.at.a.dock.and.the.boat.is.
nearly.level,.the.fuel.gauge.will.register.accurately..
Refer.to.Figure.I3..When.boating,.the.trim.angle.of.the.
boat.changes.and.affects.the.gauge.readings..Under.
these conditions, the fuel sender will register “full” for
the first few hours of running time until the fuel level
drops.below.the.3/4.or.1/2.mark..This.is.caused.by.the.
angle.of.the.fuel.in.the.tank.as.shown.in.Figure.I-6..
Figure I-6: Effects of Trim Angle
It.is.very.important.to.keep.track.of.hours.and.fuel.
consumption.to.obtain.an.average.gallon.per.hour.
consumption figure. Refer to the fuel log located at the
back.of.this.manual..This.will.prevent.any.problems.
with.running.out.of.fuel.on.the.water.