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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.
A.bilge.pump.equipped.with.automatic.switch.is.
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.
NOTICE
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.
After.winterization.of.the.fresh.water.systems,.be.sure..
the.bilge.area,.bilge.pump.and.associated.hoses.are.
thoroughly.dry..Damage.to.the.hull,.bilge.pump.and.
other.equipment.could.occur.if.water.is.allowed.to..
freeze.in.the.bilge.
C. Sump
A.sump.box.is.installed.in.the.forward.bilge.compart-
ment,.starboard.of.the.fuel.tank..See.the.310.Hori-
zon™ locator drawing at the back of this manual. It is
equipped with an automatic float switch and will pump
water.from.the.shower.overboard.or.into.the.gray.
water.tank.(if.available)..Refer.to.Section.J-2C.on.us-
ing.the.shower.and.for.additional.information.on.sump.
pump.operation.
Ventilation & Drainage Systems - Section K
D. Liner Drains
Fiberglass.liners.with.liner.drains.are.standard.on.the.
310 Horizon™ models. Fiberglass liners can be
cleaned easily by hosing the floor. The water will drain
into.the.bilge.and.be.pumped.overboard.by.the.bilge.
pump..
E. Bilge Compartment Drainage
Certain.bulkhead.areas.of.Four.Winns
sealed.in.accordance.with.U.S..Coast.Guard.regula-
tions.effective.at.the.date.of.manufacture..Drainage..
is.provided.and.water.can.be.removed.with.the.bilge.
pump.
.boats.are.
®
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