Four winns 318 VISTA, Owner'S Manual

Page: 59 / 236

Owner’s Manual Page Engines, Drives and Instrumentation - Section E
The.running.angle.can.be.controlled.through.the..
use.of.power.trim.(stern.drives).and/or.trim.tabs..See.
Section.E-8.-.Trim.Tabs.and.Section.S-7.-.Trimming.
Your.Boat.for.information.on.the.use.of.trim.tabs.and.
tilt/trim.control.switches.
Figure E-4: Running Angle
A. Power Trim
Trim.angle.is.how.far.in.or.out,.the.lower.unit.is.
positioned.in.relation.to.the.bottom.of.the.boat...
The.trim.angle.of.the.lower.unit.has.a.distinct.affect..
on.the.running.angle.of.the.boat.
The.power.trim.system.permits.control.of.the.trim.
angle.of.the.drive.unit.relative.to.the.boat,.at.the.touch.
of.a.button.
It.allows.the.drive.unit.to.be.raised.(trimmed.out).for.
shallow.water.operation..Power.trim.also.allows.the.
operator.to.adjust.the.drive.unit.while.underway.to.
provide.the.ideal.running.angle.for.a.given.load.and.
water.condition..Additional.information.can.be.found..
in.the.engine.owner’s.manual.
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
®
.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.maintenance.of.this.equipment..See.your.
Four.Winns.dealer.for.availability.
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..Some.boating.areas.require.that.additional.
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.
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 - 6 RUNNING ANGLE & POWER
TRIM/TILT
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-4.