Ventilation And Drainage Systems; Engine.compartment.ventilation; Natural.ventilation.system; Forced.air.ventilation - Four winns FUNSHIP Owner's Manual

K - 1 ENGINE COMPARTMENT
VENTILATION
All.Four.Winns .stern.drive.models.are.equipped.with.
®
engine.compartment.ventilation..This.system.is.de-
signed.to.meet.or.exceed.the.requirements.(in.effect.
at.the.time.of.manufacture).of.the.U.S..Coast.Guard,.
the.National.Marine.Manufacturers.Association,.and.
the.American.Boat.and.Yacht.Council.
A. Natural Ventilation System
This.system.includes.air.intake.and.exhaust.com-
ponents..The.exhaust.ducting.reaches.to.the.lower.
bilge.area..This.provides.adequate.air.movement.
while.underway.and.during.bilge.blower.operation.
B. Forced Air Ventilation
All.Four.Winns .models.are.equipped.with.an.electric.
®
bilge.blower..The.bilge.blower.provides.the.ventilation.
required.prior.to.starting.the.engines.and.while.at.idle..
See.Section.H.-.Electrical.Systems.for.blower.opera-
tion.instructions.
Gasoline vapors can explode resulting in injury
or death. Before starting the engine, check
the engine compartment bilge for gasoline or
vapors, and operate blower for four () min-
utes, and verify blower operation. Run blower
when vessel is operating below cruising speed.
ALWAYS operate the bilge blower while the
engines are at idle.
C. Engine Ventilation System Maintenance
Periodic.inspection.and.cleaning.of.the.ventilation.
ducts.is.necessary.to.ensure.adequate.air.circulation..
A.buildup.of.leaves,.twigs,.or.other.debris.can.se-
verely.reduce.ventilation..Be.sure.bilge.water.does.not.
accumulate.to.a.level.that.would.obstruct.the.ventila-
tion.ducts.
Blower.operation.can.be.tested.by.placing.a.hand.over.
the.vents..DO.NOT.rely.on.the.sound.of.the.blower..
Be.sure.a.substantial.amount.of.air.is.being.exhausted.
by.the.bilge.blower..Check.the.bilge.blower.system.
often,.preferably.before.each.cruise.
Should.blower.noise.and.vibration.be.excessive,.
loosening.the.bilge.blower.mounting.screws.and.then.
tightening.evenly.usually.reduces.noise.considerably.
Ventilation & Drainage Systems - Section K

Ventilation and Drainage Systems

K - 2 HULL DRAINAGE SYSTEMS
A. Transom Drain
A.transom.drain.with.plug.is.provided.in.the.engine.
compartment.to.allow.water.drainage..When.the.boat.
is.out.of.the.water,.the.boat.and.trailer.should.be.
positioned.so.any.bilge.water.accumulation.during.dry.
storage will flow towards the transom.
Be sure the drain plug is securely in place
prior to launching the boat. Upon shipment of
the boat, the drain plug is usually taped to the
steering wheel.
B. Bilge Pumps
Bilge.pumps.are.provided.in.the.bottom.of.the.hull.to.
remove.miscellaneous.water.accumulations.that.might.
occur.during.normal.boating.or.weather.conditions..
The.bilge.pump.is.controlled.by.the.bilge.pump.switch.
on.the.dash.panel..See.Section.H-3.for.a.detailed.
description.of.the.bilge.pump.switches.
Bilge.pumps.equipped.with.automatic.switches.are.
standard.on.most.models..As.the.water.level.rises,.the.
automatic float switch will activate the pump.
When.leaving.the.boat.unattended.for.long.periods.of.
time.or.during.excessive.rain.storms,.it.is.a.good.idea.
to.check.on.the.boat.for.excessive.water.accumula-
tion. Be sure both the bilge pump and automatic float
switch.are.operating.properly..The.operating.time.of.
the.bilge.pump.will.be.limited.to.the.battery.capacity.
While at rest, any bilge water accumulation
may flow forward. Therefore, operate the bilge
pump shortly after getting underway and while
the boat is at a substantial running angle. DO
NOT allow bilge water to accumulate. Damage
to the engine or other components may result.
Periodically,.clean.the.bilge.pump.strainers..DO.NOT.
allow.dirt.and.debris.to.clog.the.bilge.pump.intakes..
Check operation of the bilge pump float switch often
to.ensure.movement.of.the.switch.is.not.restricted.by.
debris,.portions.of.the.hull,.etc.
Wipe.up.any.oil.accumulation.in.the.bilge.prior.to.
activation.of.the.bilge.pump..Pumping.oil.overboard.
will pollute the water, and is subject to fine.
NOTICE
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