Tilt/Trim.control.switches; S.-.8 - Four winns 318 VISTA Owner's Manual

Figure S-1: Trimming the Boat with Trim Tabs
B. Tilt/Trim Control Switch
NOTE:.Trim.refers.to.the.angle.of.the.lower.unit.in.
relation.to.the.bottom.of.the.boat..With.respect.to.
trimming,.the.words.in,.down,.under,.and.forward,..
have.the.same.meaning.as.do.up,.out,.and.aft..
1... The.standard.trim.control.switch.is.located..
on.the.control.lever.handle..
2... The.switch.controls.the.position.of.the.stern.drive..
Proper.trim.is.very.important.in.boating..
3... In.the.case.of.low.or.heavy.bow.attitude,.the.boat.
tends to "plow" (Figure S-2). The lower unit is
trimmed.too.far.under.or.forward..Trim.the.unit..
UP.(out).to.correct.this.situation..
4. If the bow is too high, the boat tends to "porpoise"
(Figure.S-4)..The.drive.unit.is.trimmed.up.or.out..
too.far..Trim.DN.(in).to.correct..
5... A.good.practice.is.to.get.underway.(especially.
when.fully.loaded.or.pulling.a.skier).with.the.unit.
trimmed.all.the.way.DN.(under)..After.the.boat.is..
on.plane,.adjust.the.trim.out.slightly.to.obtain.the.
proper.bow.attitude.and.engine.speed..
6... Trim.also.affects.propeller.selection.and.fuel.
efficiency. All models should be "propped" to be in
the.upper.half.of.the.maximum.rpm.range.with.the.
boat.lightly.loaded.and.the.drive.trimmed.up.to.
maximum. This configuration allows the engine to
operate.within.the.recommended.rpm.range.with..
a.heavy.load..
. The.power.unit.should.never.be.trimmed.up.to..
a.point.where.the.propeller.cavitates.(or.slips)...
A.rapid.increase.in.engine.rpm's.is.evidence.of.
cavitation..If.this.occurs.accidentally.while.running.
Pre-Launch and Underway - Section S
at.full.throttle,.immediately.lower.the.drive.trim..
and.reduce.the.throttle.until.the.slipping.stops...
If.necessary,.have.your.dealer.reset.the.trim.limit.
switch.(if.provided).to.avoid.overtrimming.in.the.
future..
. If.the.prop.slips.at.lower.planing.speeds,.the.drive.
may.be.trimmed.too.high..Immediately.lower.the.
drive.unit.until.the.prop.grabs.again.to.restore.
efficiency.
7... Trimming.out,.in.addition.to.raising.the.bow,.also.
lifts.the.boat.higher,.gaining.speed.because.less.
hull.is.in.the.water..
NOTE:.Refer.to.the.control.instructions.regarding.the.
power.trim.controls.installed.on.your.boat..
Figures S-2–S-4: Trimming the Boat with Outdrive
S - 8 NAVIGATION LIGHTS
Although.night.activities.are.limited,.cruising.at.night.
can.be.very.pleasurable..It.can.also.be.dangerous..
if.you.don't.pay.close.attention.to.water.levels.and.
obstacles..Be.especially.careful.of.shallow.waters.and.
watch.for.submerged.debris,.rocks.and.other.obsta-
cles.in.the.water..Your.navigation.lights.are.intended.
only.to.prevent.collision,.not.to.improve.your.night.
vision..You.may.choose.to.use.a.spotlight.instead..
NOTE:.It.is.illegal.to.use.your.spotlight.as.a.headlight..
Use.it.only.temporarily.to.check.the.position.of.your.
boat.and.the.surrounding.area..
Owner's Manual Page 9