S - 6
ACCELERATION
short.of.porpoising.or.propeller.cavitation,.under.ideal.
running.conditions..
Trim.your.boat.to.compensate.for.seas,.winds,.or.
uneven.loads..
Before accelerating to bring you boat on plane,
be sure that the area in front of your boat is
clear. The bow will rise out of the water
momentarily before you plane and may
temporarily obstruct your vision.
Head.Seas
Trim.drives.in.more.than.
usual..Use.tabs.to.keep.
bow.down.and.go.at.a.
slower.speed.
If.you.have.never.had.your.boat.on.plane.before,.
choose a calm day for your first on plane experience.
Never.boat.beyond.your.ability.and.experience..
Following.Seas
To.prevent.taking.seawater
The.bow,.trim.drives.out.and.
keep.tabs.up.to.keep.bow.
down
Before bringing your boat “on plane”, check the entire
area.to.make.sure.you.have.a.clear,.safe.path..As.you.
throttle.up.to.accelerate,.your.boat.will.increase.its.
angle.of.trim,.causing.the.bow.to.ride.high..From.a.
maximum.angle,.the.boat.will.level.out.to.its.planing.
attitude.with.continued.acceleration..This.maximum.
angle is known as the “hump”. Because visibility,
handling,.and.performance.are.reduced,.it.is.advisable.
to get “over the hump” as soon as possible. A few
seconds.at.full.throttle.should.get.the.boat.over.the.
hump.and.into.its.planing.attitude..
Listing.Due.to.
Quartering.Seas,.
Beam.Wind,.or.
Uneven.Load
Use.tabs.independently.to.
adjust.for.list..If.listing.to.star-
board,.press.port.bow.down.
switch..If.listing.to.port,.press.
starboard.bow.down.switch.
Remember.that.most.boats.react.very.slowly.to.trim.
tabs..Often.boat.owners.do.not.give.trim.tabs.time.to.
work..Press.the.trim.tab.switches.for.only.one.second.
at.a.time.and.then.allow.some.time.for.the.boat.to.
react..If.the.boat.is.still.listing.after.a.minute.or.two,.
press.the.trim.tab.switch.again.for.a.one.second.
interval..The.labels.on.the.trim.tab.switches.indicate.
what.you.want.your.boat.to.do,.not.what.you.want.the.
tabs.to.do..
After.getting.over.the.hump,.accelerate.until.reaching.a.
comfortable.plane,.then.throttle.down.to.cruising.speed..
This also will provide for better fuel efficiency.
S - 7 TRIMMING YOUR BOAT
A. Trim Tabs
It.is.a.good.idea.to.take.your.boat.out.onto.open.
water.shortly.after.you.get.it.and.experiment.with.the.
trim.tabs..After.you.get.your.boat.onto.plane,.set.the.
tabs.in.various.positions.and.note.how.your.boat.
reacts..This.will.give.you.a.feel.for.how.the.trim.tabs.
work..
Trim.tabs.are.used.to.add.lift.to.the.boat’s.stern,.
thereby.changing.the.boat’s.attitude.(see.Figure.S-1)..
This.lift.can.help.the.boat.get.on.plane.faster.and.
remain.on.plane.at.slower.speeds.than.if.no.tabs.were.
used..Used.independently,.tabs.can.also.correct.listing.
conditions.caused.by.crosswinds,.unbalanced.loading.
and.quartering.seas..Trimming.your.boat.properly.
involves.two.separate.procedures,.trimming.or.tilting.
the.lower.unit.(stern.drives).and.setting.the.trim.tabs..
It.is.possible.to.extend.the.cylinder.life.expectancy.on.
your.trim.tabs..To.do.this,.keep.the.cylinders.retract-
ed.while.at.dockside..Press.both.trim.tab.controls.
down.until.tabs.reach.their.full.up.position..
When.you.are.sitting.dead.in.the.water,.your.drive.
should.be.down.and.the.trim.tab.switches.are.in.the.
BOW.UP.position..Accelerate.until.you.get.onto.plane..
At.this.point.your.boat.will.be.plowing.through.the.water.
with.the.bow.down.too.far..Trim.the.lower.unit.up.
slightly.until.the.bow.comes.up..If.you.trim.the.lower.
unit.out.too.far,.your.boat.will.porpoise.or.the.propeller.
will.cavitate,.and.the.bow.will.slam.up.and.down.on.the.
water..Your.boat.is.trimmed.correctly.when.it.is.just.
Pre-Launch and Underway - Section S
Owner’s Manual Page 9
| Categories | Four Winns Manuals, Four Winns Vista Manuals, Outboard Marine Corporation Manuals |
|---|---|
| Tags | Four Winns Vista 348 |
| Model Year | 2005, 2006 |
| Download File |
|
| Document Type | Owner's Manual |
| Language | English |
| Product Brand | Boats and Cruisers, Four Winns. For support contact your dealer at http://www.fourwinns.com/locate-dealer.aspx |
| Document File Type | |
| Publisher | fourwinns.com |
| Wikipedia's Page | Outboard Marine Corporation |
| Copyright | Attribution Non-commercial |
(0 votes, average: 0 out of 5)