Fresh.water.cooling; Running.angle.&.Power.trim/Tilt.-.Stern.drive.models - Four winns 348 vista Owner's Manual

exhaust.relief.and.the.exhaust.through.the.propeller.
hub..Inboard.models.expel.water.and.exhaust.through.
exhaust.ports..A.temperature.gauge(s).located.on.
your.instrument.panel.monitors.engine(s).tempera-
tures.
.
NOTICE
Inboard boats utilize exhaust hoses to
relinquish cooling water. A periodic inspection
of the hoses, muffler and related parts should
be made to insure that leaks or heat
deterioration have not resulted. Replace them
as necessary.
.
Never operate your engine without a
thermostat. Engine damage can occur and is
considered operator negligence and therefore
not covered under the engine warranty.
If engine should overheat, turn off engine,
look for obstructions to water pick-up. If any
obstructions are found, clear the obstructions
and run engine again at 00 RPM in neutral
and check temperature gauge to verify
condition. If overheating still occurs, return to
port at low RPM to prevent excessive over-
heating and engine damage. Consult with
your certified engine dealer for service.
NOTICE
When laying up the boat for winter it is
important that the cooling system be flushed
with fresh water so that deposits do not dry
and to prevent the buildup of salt crystals.
Please consult your engine owner's/operator's
manual for proper engine and cooling system
winterization procedures.
B. Fresh Water Cooling
Certain.Vista .inboards.along.with.certain.stern.drive.
®
models include a "closed water cooling" system. .
This.system.provides.adequate.engine.cooling.without.
exposing.the.internal.engine.to.the.detrimental.effects.
of.surface.water,.including.salt,.highly.polluted.or.silt-
laden.water..The.engine.owners.manual.provides.
additional.information.regarding.service.and.mainte-
nance.of.this.equipment..See.your.Four.Winns.dealer.
for.availability.
Engines, Drives and Instrumentation - Section E
These.Vista .models.use.surface.water.as.a.cooling.
®
medium.for.the.heat.exchanger..The.cooling.water.
employed.enters.the.system.through.a.water.intake.
and.is.relinquished.through.the.exhaust.manifold.
system.Inboards.utilize.thru-hull.water.intake.scoops..
These.types.of.intakes.have.an.external.strainer...
Be.sure.strainers.are.kept.free.of.mud,.weeds.and.
other.debris..Some.boating.areas.require.that.addi-
tional strainers or water intake filters be installed.
Reference.Section.P-3.-.Equipment.Installation,.in.this.
manual.for.installation.instructions.and.consult.your.
Four.Winns.dealer.regarding.any.special.equipment.
that.may.be.required.
A.gate.valve.or.seacock.is.provided.at.each.engine.
intake.scoop.previously.described..Be.sure.these.
valves.are.in.the.open.position.(lever.is.parallel.with.
the.valve).when.operating.the.engines.and.in.the.
closed.positions.(lever.is.perpendicular.to.valve).when.
engines.are.not.operating.for.an.extended.period.of.
time.
Serious engine damage could result if seacock
valve(s) is not open during engine(s) operation.
Ensure seacock valve(s) are in the open
position when operating engine(s).
Should an engine intake or an exhaust or
cooling hose rupture, turn the engine off and
close the seacock immediately. Proceed under
tow, if necessary, to a service facility for
appropriate repairs; maintain a close visual
watch on the problem hose and also on the
bilge water level.
E - 7 RUNNING ANGLE & POWER
TRIM/TILT – STERN DRIVE MODELS
Hull.planing.surfaces.have.the.least.amount.of.drag.at.
a three to five degree angle with the water. This is the
preferred.running.angle.when.boating..The.running.
angle has a significant impact on top speed and
handling..Heavy.load.or.certain.water.conditions.may.
make it difficult to achieve the optimum running angle.
See.Figure.E-7.
Owner's Manual Page 9