Owner’s Manual Page
Engines and Instrumentation - Section E
Always press the trim tab switches in short one
() second bursts. If pressed too long, you can
overcompensate, and potentially lose control.
DO NOT try to correct the situation by pressing
the other upper trim tab switch. Instead, raise
the tab slightly by pressing the appropriate
lower half of the trim tab switch.
After.stabilization.of.speed.and.direction,.press.the..
upper.half.of.the.appropriate.trim.tab.switch.to.
achieve.a.level.side.to.side.running.attitude..Be.sure.
to.press.the.correct.trim.tab.switch.to.obtain.the.
desired.result.
After.pressing.a.trim.tab.switch,.always.wait.and.
allow.time.for.the.change.in.trim.tab.position.to.take.
effect...DO.NOT.continue.to.press.the.trim.tab.switch.
while.awaiting.trim.tab.reaction..By.the.time.the.ef-
fect.is.noted,.the.trim.tab.will.move.too.far.and.thus.
overcompensate.
B. Induce Planing & Controlling Trim Angle
Trim.tabs.can.also.be.used.to.facilitate.faster.planing.
and.allow.better.control.of.the.running.angle.
Before.accelerating.and.trying.to.gain.plane,.press.
both.upper.trim.tab.switches..This.will.cause.both.
trim.tabs.to.move.downward.and.force.the.bow.down.
when.running..This.can.also.be.used.when.running.
the.boat.with.a.heavy.load.aboard.
Moving.the.trim.tabs.downward.will.increase.the.lift.
and.the.boat.will.achieve.plane.faster,.or.stay.on.
plane.at.a.lower.engine.and.boat.speed.
After.gaining.plane.and.establishing.cruising.speed,.
pressing.both.lower.trim.tab.switches.will.cause.both.
trim.tabs.to.move.upward.and.will.allow.the.bow.
to.rise..This.should.be.used.to.adjust.the.running.
attitude.of.the.boat.to.decrease.the.drag.at.cruising.
speed.or.above,.or.when.running.in.a.following.sea.
When.running.at.an.engine.speed.that.results.in.the.
boat.falling.off.plane.or.causes.the.boat.to.plane.
inefficiently, lowering both tabs slightly (bow down)
will.improve.the.running.angle.and.improve.operating.
efficiency.
Optimum efficiency is obtained when operating at a
3.to.5.degree.running.angle..Utilizing.too.much.“Bow.
Down” trim tab can reduce operating efficiency and
Figure E3: Trim Tab Switches
Before.leaving.the.dock.and.utilizing.the.trim.tabs,..
ensure.the.trim.tabs.are.in.the.full.up.position..Press.
both.lower.halves.of.the.trim.tab.switches.and.hold..
(for.approximately.10.seconds).until.the.tabs.are.full.up.
A. Control Listing
Wind,.loading.and.many.other.factors.can.result.in.the.
boat.tilting.or.leaning.towards.one.side.while.running...
This.is.called.listing.and.can.be.negated.using.trim.
tabs..
Pressing.the.lower.port.trim.tab.switch.will.move.the.
starboard.trim.tab.upward...This.will.result.in.the.port.
bow.of.the.boat.being.allowed.to.rise..
.
Pressing.the.lower.starboard.trim.tab.switch.will.cause.
the.port.trim.tab.to.move.upward.and.will.result.in.the.
starboard.bow.being.allowed.to.rise.
Pressing.the.upper.port.trim.tab.switch.will.cause.the.
starboard.trim.tab.to.move.downward.and.will.force..
the.port.bow.downward.
Pressing.the.upper.starboard.trim.tab.switch.will.cause.
the.port.trim.tab.to.move.downward.and.will.force.the.
starboard.bow.downward..
Always.establish.your.intended.heading.and.attain.
desired.cruising.speed.before.trying.to.adjust.running.
attitude.(using.the.trim.tabs).
Summary of Contents for 310 Horizon
Page 1: ...3 1 0 H O R I Z O N O W N E R S M A N U A L 0 9 0 2 8 5 8...
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Page 50: ...Owner s Manual Page 47 Warranty and Service Section...
Page 52: ...Owner s Manual Page 49 Warranty and Service Section...
Page 93: ...Owner s Manual Page 90 Sport Boat Waste Water Systems Section FIGURE J13 310H HEAD HARDWARE...
Page 100: ...Owner s Manual Page 97 Sport Boat Waste Water System Section FIGURE J20 310H GRAY WATER SYSTEM...
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