Sabre 30 - 17:00 DRIVE SHAFT AND PROPELLER SYSTEM; 17:02 ENGINE ALIGNMENT

3/21/2017 Sabre30OwnersManual
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16:12ENGINEGAUGECONDENSATION:Thisisverycommonasthedampmarineenvironment
makessomecondensationunavoidable.Condensationdoesnotreducetheeffectivelifeof
thegaugeanditdoesnotaffectthegauge'saccuracy.Althoughattimes,itdoesmake
thegaugehardtoread.
Condensationoccurswhenrelativelywarmandmoistairfromaboat'sinteriorstrikesthe
coolerlensofthegauge.Cooleraircannotsupportasmuchwatervaporaswarmair,so
themoistureisprecipitatedonthelens.
Thegaugesarenotvaporproof,anditwouldbeprohibitivelyexpensivetomakethemthat
way.
16:13WINTERIZING
:RefertoengineOwner'sManualandSection30:00forcomplete
winterizingdetails.
16:14ENGINEWIRING
:Refertoenginewiringdiagramsinthebackofthismanual.
17:00DRIVESHAFTANDPROPELLERSYSTEM
Thepartsinthissystemarespecificallyselectedfortheirapplicationandany
replacementmustbewithidenticalparts,orthoseapprovedbySabreYachts.(RefertoI
09)
17:01OFFSETPROPELLERS
:Sabreyachtsarebuiltwithpropellershaftsoffsettoport
orstarboarddependingonenginerotation.Engineswithclockwiserotation(righthand)
haveshaftsoffsettoport.
Afterextensiveresearchitwasfoundthatforthishulltypeanoffsetpropeller
benefitedengineperformanceandhandlingcharacteristics.
Sabreruddersarepartiallybalancedwiththeruddershaftabout15%aftofitsleading
edge.Thisfeaturereducestheloadonthehelmandmakesitmorecomfortabletohold
whileundersail.Thepowerfulwashofacenterlinepropellercausesthehelmtoveerto
onesideortheotherafteraturnisinitiated.Theoffsetpropellerwashtoflowto
thesideoftherudder.Asecondbenefitisthattheanglebetweentheshaftandthefore
andaftaxisoftheboatislessthanwouldbepossiblewithacenterlineinstalledshaft.
17:02ENGINEALIGNMENT
:Enginealignmentsshouldbecarriedoutbyexperiencedmarine
servicepersonnel.Whilewedonotrecommendthatyouattemptalignmentyourself,there
followsabriefdescriptionsothatyoumaybecomefamiliarwiththeprocedureandbetter
understanditsimportance.(RefertoI09)
Carefulalignmentiscriticaltotheperformanceoftheauxiliaryengine.Anarrayof
problemsfromexcessivevibrationandnoisetoextensivewearofenginepartsmayoccuras
aresultofmisalignment.
Enginesmustbeproperlyandexactlyalignedwiththepropellershaft.Theengineis
alignedwhenfirstinstalledthendisconnectedfortransportationandlaunching.Boats
maychangeshapeveryslightlyuponlaunchingandrigging.Itisthereforenecessaryto
aligntheenginetotheshaftafterlaunching,rigging,andtuning.Preferablyfueland
watertanksshouldbeabouthalffullandtheusualequipmentonboardsotheloaddoes
notdrasticallychange.
Afeelergaugeisusedtocheckthatthecouplingflangescomeexactlytogetheratall
points.Ifthecouplingsaremisalignedtheengineisshifterbytilting,lowering,
raising,andturninguntilthecouplingflangesmeetevenlyinallpositionswithoutusing
force.
17:00DRIVESHAFTANDPROPELLERSYSTEM(Cont'd)
Asafinalcheckforalignment,theenginehalfcouplingshouldbeheldstationaryand
theshafthalfcouplingrotatedin90degreestagescheckingthegapateachturn.This
willalsocheckwhethertheshafthalfcouplingisinalignmentonitsshaft,withits
faceperpendiculartothecenterlineaxisoftheshaft,ormayindicateabentpropeller