Download Overhaul Service Manual

=FE:E,I{&IEE
rtnil;tr
IITTXTT
IITililTI
rrltxill
rrlilxlt
ilIIilXII
NIXilIII
IilHSIHtrI
MANUAL:BERKELEY
SERVICE
JETDRIVES
INDEX
l.
ll.
'Introduction
to jet drives.
A.
Aboutjet drives
B.
Specificto BerkeleyJet Drives
C.
Principles
of operation
D.
Dynamometer
theory
E.
Schematic
F.
lmpeller
to enginematching
1.
lmpeller
curves
2.
Basicenginecurves
3.
Matchperoperatorrequirement
4.
Variations
for modifiedengines
TroubleShooting
CheckList
A.
ExcessRPM's
1.
Debrisinjet
2.
Something
in impeller
3.
Wearring clearance
4.
Wan or clngedimpeller
5.
High horspor
6.
Air ingestirn
7.
Lossof speed
and tig loads
Lossof engineRPM's
c.
1.
Fuel
2.
Enginetune
3.
Overheat
4.
Badthrustbearing
5.
wrappedin shaft
Something
Lossof boatspeed- constantRPM's
1.
Addedoperating
weight
2.
Reversegatedrag
3.
Bottomspraydrag
4.
Warpedboatbottoms
5.
Dirtyboatbottom
D. Unusualnoises
1.
Clatteror knocking
sbund
2.
Grinding
or rubbing
sound
3.
Squealing
or highpitchedrotatingnoise
4.
Hammering
or thuddingsensation
E. Waterleaks
1.
Packinggland
2.
Suctionpiecegaskets
3.
Transomadapterseal
a. Bowltoadapter
b. Adapterto transom
4.
Inspection
cap/extension
5.
Coolingwaterhose
6.
Cablethru hullaftachments
2
lll.
Overhaulof Jet Drives
A.
Steeringand reversingmechanism
B.
lmPellerand wear ring
C.
Bowl/bowlbearing
D.
gland
SuctionPiece/Packing
E.
Shaftand bearingassemblY
INTRODDUCTION
TO JETDRIVES
A.
AboutJet Drives
TheJet Driveis Simple.A jet driveis a waterpump,whichis drivenby a automotiveenginethathas
formarineuse.Theengine
is mountedwithinthehullandconnected
beenspeciallyprepared
directly to the pump.Thereis no clutchor gear box.
Theiet receiveswaterthroughan intakegratein the bottomof the boat,and ejectstheflow beyond
the transomand througha steerablenozzle.The pump impeller,in ejectingthe water,createsan
equalforcein the oppositedirectionwhichpropelsthe boatforward.Steeringis doneby swinging
the nozzleand rudderrightor left,as desired.
by pointingthenozzleup or downwithina controlled
rangeon
Theboat'sattitudecanbecontrolled
modelswith underwaytrim.
Reverseis accomplishedby loweringa reversegateacrosstheoutflow,divedingthejet streamforward,beneaththehull.Loweringthe reversegatewhenthe boatis goingforward,canstoptheboat
virtuallywithinits own length.(Stoppingshouldbe done carefullyto preventpassengersor free
is no extrastrainon the engineor the Jet-Drivewhen
objectsfrom beingtossedfonruard.)There
goingfromforwardto reverse.The drivesystemcan'tdetectthe change;its rotationand loadare
not affected.
The jet drivedoes not know how heavyyour boat is, or what speed the boat runs.Simply,the
yourboatis matched
poundsof
totheengineand
willdeliverabout
1400-1800
Berkeleyjetdrivein
to 40OOgallonsof watereveryminuteat a pressureof 60 to 180 pounds
thrustwhilepumping3OOO
per squareinch(PSl).
B.
BerkeleyJet DriveSpecifics.
The Berkeleyjet driveis a mixedflow design(partaxialflow,part centrifugal)
with a 12" size
isfromwaterwellsizing,meaningthebowlwillfitin a 12" well
designation.
this12" sizedesignation
principals
Berkeleycomesfrom
thehydraulic
usedinthedesign
casing.Theoriginaltechnologyfor
pumps
multi-stage
line
shaft
turbine
which
are
for
used
submerged
in
of singlethrough
application
all typesof waterwell or fluid transfersystems.
assuresyou of adequatethrust
The balanceof centrifugaland axialflow pumpcharacteristics
in the popularboatspeedrangesfrom 30 to over60 MPH.The
velocityfor good performance
jet
efficiencyof the driveis readilyseenonce speedsin the 40 plus milesper hour rangesare
diameternozzlearepossibleand maybe effectivein
reached.Minorchangesin the nominal31/a"
finetuning.Usuallya slightlylargerdiameterfor boatswithtop speedsbelow45 MPHanda smail
decreasein nozzlediameterwherespeedsabove65 MPHare possible.
C.
Principals
of Operation.
inyourboatwitha correctimpellertomatchtheenginesupThejetdriveshouldhavebeeninstalled
pliedwiththejetdrive.Thereis no requirement
to changethisimpellerin an effortto increaseoutof
theholethrustor obtainbettertop speed.
TherearefewO"nr,na jetdrive.Thedirect-driveshaft
hasathrust
Yourjetdriveis easytomaintain.
Theintakegratescreens
Theimpellerisf ixedto theshaftandcompletelyenclosed.
andtailbearing.
outmosttrash.. .butiftoughweeds,stringor a smallropepassthegrate,andremainintheimpeller,
theseare easilyremovedthrougha handholewhichis normallycovered.
With no gearsand so few pads,overhaulof a jet drivemay not be necessaryfor severalyears,or
Accessis simple
andreadilyavailable.
huridreds
of hoursof use.Partsarelargelyinterchangeable
andthere'sa minimumof downtime.
type,expertlymodifiedfor marineuse.Maintenance
is much
automotive
Theengineis heavy-duty
the sameas you wouldexpectwith a car.
Any
BerkeleyJet Drivescomparefavorablywithothertypesof propulsionon fuelconsumption.
gaswhenpushedtowardmaximumRPM.At skiingspeeda largeV-8can
engineusesexcessive
on f uelcostsfor a dayof cruising,skiingandpicnicking.
Usingthe 12J,as
compareveryfavorable
an example:
WithRPMreducedtoTOo/o
fuelneededis reducedto only32o/o
of maximum,
ot
maximum,whilespeedis maintained
at 660/o
of maximum.
Thusat two-thirdsfullspeed,fueluseis cutto lessthanone-third,
resultingin twiceas manymiles
gradegasolinewithoutexpensivemixing
traveledper gallon.Sincejets useordinaryautomotive
withoil,by seldomexceeding50 MPHyoucan havea day'sfun for little,if any,greatercostthan
runninga smallerllO or outboard.
Becausethe Berkeleyhasmoremaneuvering
easethanotherdrivesystems,youshouldlearnto
handleyourcraftquicklyand becomean expertaroundthe docksin a shorttime.
(SeePage23tor diagram)
A jet handlesquitedifferently
than the traditionalprop and rudder.What makesa jet different,
makesit better!lt doesn'tdependuponhullmovement
to attainfullpower.A propunloadsas forletstheengine
isonlyavailableatfullboatspeed.
wardspeedisattained,which
revtofullpowerthat
Witha jet.youhitthethrottleandtakeoffrightnow,withfullpowerWhenyoureversea jetdrive,you
reverserightnow.withfullpower.Whenyou tum,the iet.plusthe rudder,swingyou aroundin a
supertightcircle.
intot(;ht dockrngsrtuatrons
byswitchingfromforwardto reverse
Youcanmoveatetboatsrder,vays
the steenng.
whilecoordinating
Drivewhichistotallydifferentthan
withtheBerkeleyJet
otherdrivesystems.
Youwillnoteonething
(somemodelsoptional)ruddertherewill
notequippedwiththestandard
lfyourBerkeleyJetDriveis
be no steeringforceexertedundera no throttleor engineoff conditionThisis not unsafe.Without
yourjet drivepropelledboatwill immediately
returnto a straightlineand
appendages,
underwater
if youwantto havemore
coastto a stopif the poweris cut quickly.Useota rudderis recommended
control,evenunderpoweroffor lowthrustconditions.Youwill learnto keepa littlethrottleon when
slowingfrom high speedso you alwayshavea powersteeringthrustforceavailable.
D.
Theory
The Dynamometer
is usedto measureengine
YourBerkeleyJetDriveoperatesin the sameway afluid dynamometer
output.Becausethe imlpellerhorsepowercurvessuppliedby Berkeleyare very accurate,this
curvewilltellyou the enginepowerbeingabsorbedat any RPM.
Youcanlookatthe"B" impellercurve,for example,andseeit requires150 shafthorsepower(SHP)
youskiat35MPHandtheenginemustturn
perminute(RPM).lf
3800RPM,
toturn3800revolution
thenyou are using150 SHPto driveyourboat.
The BerkeleyJet Drivealso measuresabsolutemaximumSHP availablefrom each impellerby
youhaveaBerkeleyJet
RPM.Asanexample,
Drivewitha
allthepoweravailableatsome
absorbing
"A"trimandyoucanget4TOO
RPM,thenyouareprotheimpellerisan
highperformanceengine.lf
ducingand absorbing320 SHP.
Troubleshooting,using the dynamometertheory is very simple if you keep two principlesin
mind.
1.
The impellercan neverabsorbmorehorepowerthan shownon the impellercurve.
lf you experienceloss of RPM'syour problemis eithermechanical,i.e.seizingjet drive
bearingsor is in the engine.
2.
wear or
The impellerabsorbsless horsepoweronly when thereis waterflow interruption,
powerof
not
mechanical.
notstart
making
more
are
Sincetheenginewill
othercauseswhich
its own accord,any increasein full-throttleRPM is an indicationof pump wear,waterflow
blockageor air ingestion.
Theruleis simple,RPMsup - lookfor wear,rocksin grate,ski ropein jet,etc.RPMsdown - check
for properoperationand lookto the engine,fuel,spark,comthrust,tailshaftand universaljoints
pression,etc.
F.
lmpellerto EngineMatching.
6
for a Berkeley12J size
The followingcurve shows the horsepowerabsorptioncharacteristics
jet drive.
1.
BerkeleylmpellerChart
:
2. Engineto BerkeleyJet DrivelmpellerMatch
(Seepage24)
theimpellerselectedwill providethebestaverageperformance
Infactoryinstalledinstallations
and
possible
is designedto keepthe maximumengineRPM's
wellwithinsafeoperatinglimits.
jetdrivetoyourtypeorstyle
in performanceortunethe
Youcanobtainsmallincreases
of boatingby
makingan impellertrim change.
lf yourengineis lockedat 42OORPM,let'ssay,and it will makepowerthrough4800 RPM,thena
smallertrimsizefor increasedRPMshouldresultin a highertop speed,providingthe powergain
was sufficient.
ln this situationyou will needmoreRPMsat waterski and cruisingspeeds.You,
however,may not care muchaboutabsolutetop end and be much moreinterestedin economy,
quietengines,stronglowto mid rangeaccelaration
andthe bestwaterskiand cruiseconditions.
Youwouldwantto usea largertrimimpellerand limityourtop end RPM's.Thisset up will provide
themostmilespergallon,a quieterboat,lessenginewearandtearandwillbe morecomparable
to
a typicalsterndrivesetup.At 35 MPHthedifference
betweenan "M" impellerat 32O0RPMl125
SHP)and a "C" impellerat 4900 RPM(140SHP)is easilyseenand felt.
Thesesametwo impellerswouldprobablyend up being42OORPM(280SHP)and 5200 RPM
(320SHP)on the top end.Youshouldapplytheserules:
a. Loadthe enginesfor best low and mid rangeperformance.
b. Unloadthe enginesfor highertop end RPM and speed,providedyou have adequate
horsepowergain.
4.
lmpellermatching(variations)
for highperformance
engines.
Enginemodificationfalls intotwo categories.
ChangeswhichrequirehigherRPM'sin orderto reflecta powergain.A few of thesechangesare
higherlift.largerduration
camshafts,
highercompression,
moreorbiggercarburetors.These
modificationswill providemorepower,butareusuallyaccomplishedby increasedRPM'sand a torque
5OOto 10oo RPMor moreup the scale.tf the impelleris too big you maybe
curvewhlchis mcnred
disappointedand discover;or.rlnve worked hardand spent krtsof cash to end up with littleor no
RPMgain or s/en lost RPlrfs
As a ruleof thumb,you shouldalwaysdecreaseyourimpellertrimone size,i.e."A" to "B" when
goingto a hottercam.Thejet driveneedslotsof torqueon the top end and very littlebelowSbOO
RPMso youmustcarefullymatchyournewtorquecurve/HPcurveto the impellerSHPabsorption
curve.lf you alsoadd cubic inchesthenan impellersizechangemay not be needed.
whichare basicatlyaddinghorsepower
Enginemodifications
at the sameRPM's,i.e.a blower,
turbos,nitroussystem,will eitherdo wellwiththesameimpelleras stockandturna few hundred
moreRPM'sor will benefitfroma largertrim impeller.Hereare examples:
Youturn 4600 stockand are at the peakof yourstock horsepowercurue.Additionof a nitrouskit
mightgiveyouanadditional100 HP.Usingthesameimpelleryouwilleithergain500 RPMandbe
off the cam curveor you can switchto a largertrim impellerto absorbthe additionalSHPat about
thesameRPMas before.
Thealternative
solutionisto leavetheimpellerthesame,changethecamandvalvetrainto be more
effective
at higherRPM'sandgeta grosspowergainwhichis thesumof the nitrousaddedpower
and effectof the strongercam.
II.
TROUBLESHOOTING
CHECKLIST
A.
ExcessRPM's
is
excessRPM'smustindicateonething.Something
Usingthejet driveas a dynamometer,
preventingthe jet drive from absorbingthe power availableaccordingto the lmpeller
AbsorptionChart.Herearethe mostcommonproblems:
Horsepower
Debrisin thejet.
Theboattakesa lotof RPM'sto getor stayon plane,or maynotgeton planeat all.Theremay
vibrationsor waterthuddingnoisesas well.
be accompanying
1.
Cure
Shutdowntheengine.Removethe ignitionkey.Probethe intakeareato seeif somethingis
justshuttingoff
so first- trythis;sometimes
hungin thegrate.Youwill haveto go overboard
iftherearelargeweedsor a plasticbag
it willdo thetrick,especially
theengineandrestarting
suckedup againstthe grill.
lf the slippageis stillthereand the grillis clearyou probablyhave:
2.
So me th i nign th e i mp e l l e r.
Yourjetmay
Usecaution.
willneedto removethehandholecover.
Toinspecttheimpelleryou
you
riskfloodingtheboat.lf thisisthecase,
be belowstaticwaterline.Removethecoverand
beachthe boatso it cannotsink or limp backto the trailer'
8
Investin an extensionfor your inspectionhand hole if it can be fitted.
!
Ownersof transommount'rE"& "F" modelsareOK.Yourhandholeis outsidetheboat.lt may
be difficultto get to, but thereis no dangerof floodingthe boat.
:1
'
Oncethe handholeis open,feelallaroundthe impellerfor a smallstick,pieceof plastic,rock
betweenthe impellerblades or even ski ropes or long weeds wrapped around the
impellershafl.
Removeany debrisyou find,reinstallthe coverand try to accelerate.lf you arestillslipping,
. you probablyhayesomethinglodgedway back in the impellerblades.Takeanotherlook!
Alsocheckthe impellerbladesto see if thereis a piecemissing!Thisis veryunlikely,but an
ingestedrock can breaka blade.
3.
Wear RingClearance
Thewearringactsas a sealbetweenthe high pressurewaterin the impeller,bowlareaand
the low or no pressurewater in the suctionpiece.
if the wear ring is loose,therewill be excessbackflow of high pressurewaterand you will
experiencethe followingsymptoms.Any or all of:
a. Lossof a few MPH on the top end.
b. RequiremoreRPM'sto maintainsamecruiseor ski speed.
youwill get severalhundredRPM'soverrun,thenthe enginewill
c. On hardacceleration,
loadbackdownto normalor slightlyhigherRPM's.
wearringisdisassemblyof
Theonlycureforaworn
thebowlandimpellerand
replacement
of
the wear ring.Sometimesthe impellerskirt (seal)areawill be worn excessivelyas well.
Wornor Dingedlmpeller
:
=
=
:a
Operationsin sandy,rockyor dirtywaterwill causethe leadingedgeof the impellerbladesto
be dinged off. After awhilethe edge is no longeralmostsharp,but roundedoff or even
chippedor dented.
The symptomsof a worn impellerare the sameas for a worn wear ring.
D'agncis is simple.Feelthe impellerbladesthroughthe handholeor lookat themthrough
the grill with a flasftlightto enabb yon to see the impeller.
9
lf theedgeis rounded,bumpy,chippedor hasotherdamage,the impellermustbe removed
and eitherreplacedor the edge roundedto its originalcontours.
HighHorsepowerand Big Loadi
youwill loadup allyourgearandcrewin orderto makeonerunto thecampsite
Occasionally
or acrossthelake.lf youhitthethrottlehardat lowspeedyoumayoverpowerthe impellerand
cause it to cavitate.Usuallyyou can accelerateeasilyand get up on planewithoutover
rewing.lf you cannot,eitherreduceyour load or operateat suitablyreducedthrottle.
In the eventyou havea worn impelleror wear ring,suddenhigh RPM'sat off planeboat
speedswill inducecavitationmuchfasterthan whenyourjet driveis like new.
Thereare severaltypesof air ingestion.
a.
Thefirstairingestion
iscausedbytheimpellerpackingbeingwornloose.Thisairingestionwill be underhighthrottleacceleration.
Thesuctionof the impellercausesairto
flow intothe suctionpiecebetweenthe impellershaftand packing.
A typicalsymptomof air ingestionof thistype is highRPM'son acceleration
which
drop once the boat is at speed.
packingwillbe indicatedby leakingatthepackingglandbothat restand
Usuallyworn
at speed.
Replacethe packingor tightenthe packinggland.
10
b.
airdowntheedgeof the
at speedbyfunneling
Certain
boatswillinduceairingestion
keel,a strake,or pasta thruhullfitting.
by properacceleration
andloadRPM's
Air ingestion
of thistypeis usuallyindicated
thanan increasein RPM'switheitberlossof speedor no speedincrease.
mayactually
a slightturnwill makethetendencyworseor performance
Sometimes
increaseif the air streamis deflectedawayfromthe intake.
Theremedyisto removetheairtrapor modifythewaterflowdowntheboatbottomso
thisair is deflectedtowardsthe chinesandawayfromthe intake.
.
c.
Atspeedsomeboatsbecomeso looseandfreerunningthereis nohullinthewaterto
makea smoothwaterflow,highpressurepathforwatertofollowintothesuctionpiece.
Theflatterthe bottom(lessdeadrise)thesoonerthisproblemwilldevelop.
jumpsin RPM'sas the impeller
Thesymptomsare rapidandfrequentmomentary
grabsair,unloads,
Asidefromaccelerated
thengrabswaterandreloads.
wearonthe
theconditioncontributes
to excessRPM'sand blown
thrustbearingand impeller,
engines.
lf youoperateon choppyor roughwaterat highspeedsandexperience
thistypeof
quick
you
keep
very
a
throttlefootor hand,installa
cavitation, caneitherslowdown,
RPMlimiterset200to4OORPM'saboveyournormalRPM'sor planonbentpushrods,
floatedvalvesand brokenconnectingrods.
7.
Lossof Speed
noneof theseaccountforthe speedlossthenlookat theseitems.
Seeitems1-2-3-4-5.!f
a.
b.
c.
gatehasslippeddownandis draggingin thejet stream.
Reverse
Youaddedweightto the boat.Speedis a powerto weightrelationship
so everyextra
poundoJfuel,gearor whatevercostsa bit of speed.
Thebottomof yourboathaschangeddueto trailersag,brokenbunkers,
etc.andthe
boatwillno longerrideas freeas it originally
did.
11
Restorespeed by:
Losingweight.
Fix the trailer.
Straightenthe boat bottom.
Adjustthe reversegate-shiftcablelinkage.
B.
Lossof EngineRPM's
Again,rememberingthe dynamometer
theory,loss of RPM is eitherdue to loss of engine
poweror internalfrictionin the jet driveor driveshaft.
" 1.
Poorfuel,waterin fuel,old fuel,enginefuel systemproblems,pluggedfilterson fuel
tanksuctiontube;checkfuelflow!
2.
Engineout of tune.
a.
Checktuning,dwell,plugs,compression,
etc.
Hasthe throttlelinkageslippedso W.O.T.is no longerpossible?
b.
3.
Engineis overheating.
4.
a
Checkforfreewatertlowthroughthe block.A gardenhoseon the inletwaterline
will let you see if you havewaterflow.
b.
ls therewaterf lowf romthe pumpintothecoolinghose?Leavesor gravelcanget
intothe supplyline.Cleanit out.
c.
Didtheflowvalve{ifyou haveone)vibrateitselfintothe off or lowflow posltion?
Adjust it for proper flow then use a tie wrap to fix it so it cannot open or
close.
d.
Blown headgasketsor exhaustriser manifoldgasketscan let high pressure
gasesintothe enginecoolingsystem.Checkfor waterin the oil, waterfouled
sparkplugs.
Bad ThrustBearing
lf the thrustbearingis failingor lockingup the frictionwill pullthe enginedown.
Check if the bearinghousingis hotterthan usual.lt should be cool or warm to the
touch.
Listenfor rotatingnoisessuch as squeaking,grindingor a roughvibration.
Note:A failedthrustbearingcan lockup and youwilltwistthe impellershaftor it will let
the impellershaftridefonltrard
and the impellerwill eat itselfup on the wear ring and
suctionpiece.
12
Theforwardthrustcan forcethe crankshaftforwardand put excessstrainon the'main
bearingthrustbearing.
lf yoususpecta badthrustbearing,comehomeeasyandsavesomebig billsfor parts
s
otherthan a new bearing.
5.
SomethingWrappedin the lmpelllerShaft
lf you pick up lotsof fishingline,a floatingropeor yourski rope,it can wrap up and fill
the suctionpiececavityor get betweenthe wear ring and impeller.
Removethe itemthroughthe handholeopeningusinga sharpknife,hacksaw blade,
etc.to cut the messloose.Sometimesit is necessaryto pull the bowl and impeller.
C.
LOSSOF BOATSPEED- ConstantRPM's
Whenyouexperiencea reductionin boatspeed,yetyourfullthrottleRPM'sarethesameas
jetdrive,atleastasfaras
isnothingwrongwiththe
beforeitissafetoinitiallyassumethere
it's
internalconditionisconcerned.Onceagain,pleaseremembertheDynamometertheory.
The
jetdriveis absorbingthesamepower,atthesameRPM'sso it is puttingoutthesameamount
of thrust.Beforeyou head off for a jet drive overhaul,take a look at these areas:
1.
Have you added an extra fuel tank, started carrying two new sets of water skis,
changedweightdramaticllyof any of your passengersor purchaseda new 68 quart
cooler?Thespeed
of yourjetboatis primarilyafunction
of powertoweightratio-if you
addedweight,especiallytowardsthe bow,youwill usespeed- a littleor a lot,depending on how much weight and how it effects your craft's LongitudinalCenter of
Gravity(LCG).
2.
makesureitdoesnotdraginthejetstream.Anydrag
Checkyourreversegateand
isan
applicationof reversethrustand down goes your speed.Adjustyour cable linkage,
checkfor looseconnectors,bentcontrolpivotarms,loosebushingsinthe reversegate
pivotpins.
3.
Bottomspraydragcan alsoslowyou down Perhapswateris hittingthe reversechute
sinceyouraisedyourcavitationplate,or youinstalleda dropnozzleandnowthewhole
steeringsectiondrags at speed.
13
4.
A commoncauseof lostspeedis the developmentof a hook in the runningsurface.
Overa periodof timetrailersmaysag,supportbunkersbreakor one is knockedoutof
adjustmentandthe hulltakesa newshape.lf yougeta hookinthe lasteightfeetof runningsurfacetherewillbeatendencyforthe
hulltorunflatter,moveglueddown,andthe
extrabottomdrag slows you down. .
The remedyis simplebut involveslotsof work,expenseor bothdependingon how
bad,who doesthework and howexactyouwantthe bottomblueprinted.
Takingout a
hookor straightening
crookedrunningsurfacesrequiresgrindingoffsomeof thehigh
fillingin the hollowsand makinga newstraightsudacefor aboutthe
spotsif possible,
lasteightfeet of the boat bottom.
lf youdetermine
thetrailerneedsrepairor adjustment
as well,do it nowor yournewly
straightenedboat bottomwillsoon be crookedagain.
5.
D.
A dirtyboatbottomhasresultedin speedlossor eventhe inabilityto get uponplaneon
manya boat.Boatsleftin the watergrow weedsand algaeand can looseas muchas
10 MPHin onlyoneweek.A 2OOmiletow on dustyroads,heavilytraveledinterstateor
througha rainstormcan leaveenoughroadfilmon the runningsurfaceto scruboff an
easy5 MPH in a freerunning70 MPHwatercraft.
NOISES
UNUSUAL
lf youareawareof thesoundsnormallyheardwhenyourboatis running,changesin sound
will notonlyindicatepotentialproblems,
but helpyoudiagnosethe problem.Herearea few
typicalsounds:
1.
Clatteror KnockingSound
Theneedlebearingmaybefailing,needlubeor
a.
ChecktheU-jointverycarefully.
the shaftsplinesmay be dry.
b.
Makesurethe boltstyingthe U-jointto the flywheelaretight.Looseboltsallow
the U-jointflangeto work and can allowthe flywheelto spin loosefrom the
crankshaft.
c.
Checkthetailshaftbearingby reachinginthroughtheinspection
hand-hole
and
feelingfor up and downor sideto sidemotion.Thereshouldbe no discernible
shaft movement.
2.
Grindingor RubbingSound
lf youseeno visiblecausefor thegrindingor rubbingsoundandalltheshaftbearings
appearto havethe correctclearances,it is a good precautionto pull the bowl and
lf a rockor otherabrasiveobjectis betweenthe impellerandthewearringor
impeller.
otherpartsof the jet driveassemblyit can causeexcesswearand cut the impeller
apart,cut a groovein the bowl or suctionpieceor destroythe wear ring.
14
3.
Squealingor High PitchedRotatingNoise
Thistype of sound almostalwayscomesjust beforetotalfailureof the thrust bearing.
Anothercausecanbeanobjectbetweenthe impelleranda non-rotating
elementof the
jet drive.
=
lf you detectthis sound,checkthe bearinghousing.lt will get hot if you are aboutto
loosea thrustbearing.
youmust.Remember,afailedthrustbearingcan
Comehomeslowlyif
locktheshaft,let
the shaftand impellerassemblyspin in an uncontrolledarc.All of theseitemswill do
fufthermechanicaldamageand necessitateadditionalrepairexpense.
.
4.
Hammering
or ThuddingSensation
The water hammeror poundingsensationis usuallycausedby an objectwhich is
lodgedin the bladesof the impelleror betweenthe bowl vanes.
Anothercauseis intermittent
waterflowdisruption.A trailingbow ropethathasanend
whippingjust insidethe suctionpiecewould be a good example.
A water hammer,if severeenough,for a long enoughperiodof time can breakthe
impeller,causethe bowl to crack or breakopen and may transferunevenrotating
stressback to the enginecrankshaft.
lf you experiencesuch a sensation,shut down or go to idle RPM'simmediatelyand
determinethe cause.Comehomeat slowspeedif you cannotinspectthe impelleror
intakeareawhileon the water.
Removalof the foreignobjectis ususallyall you will needto do. Thereis usuallyno
mechanicaldamageunlessthe conditionis extremeor you persistin high RPM
operation.
E.
WATERLEAKS
Thereare only a few areasfor water leakson the jet drive and installation.
1.
Leakageat the packinggland.
Averyslowdripatidleisnotbad,
ifthepackinggland
istootQhtyoucanburnitsoitwill
not seal lf the leak is excessiveor ]ou suspect.en air lek under hard acceleration,
tighten the packiq gbnd iust enough to dimhde the excess leak (morethan 1Ol20
dropspermhubditb). lf youanndtigftbnttepacking glandtoeliminatethe
leakor
you needexcessbol brque, the pditg msn be replaced.Don't panic, it can be done
withotrta iet drive E 6trn a F.-rg the engirc. See the overhaulsection of this
manual.
15
2.
Leaksat the SuctionPieceGasket.
Thiscan usuallybe eliminitated
by re-torquingthe bolts.lf you haveto replacethegasjet
ket,the drivewill haveto be removedfromthe boat.Seethe overhaulsection.
3.
TransomAdapterSeal
The transomadapteris sealedto the boatwith a gasket.Apply a new beadof
siliconaroundthe joint as a first step repairor replacethe gasket.
b.
The seal betweenthe bowl and transomadaptoris eithersilicon,O-ringor
both.
Youcan re-sealthisareawith moresiliconesealeror pullthetransomadaptor
and replacethe O-ring.
4.
Inspection
Cap/Extension
Waterleakageand
airinduction
areprevented
byanO-ring.KeeptheO-ring
clean,free
lightly
lubricated.
sand
and
lf
of
the O-ringis cut,hardenedor no longeran effective
seal,replaceit.
Do notover-tighten
thecap bolts.Youcanwarpthecapand it willnotseal.Makesure
thecapwrenchis in placeso theretainerboltscannotworklooseandallowthecapto
be pushedout by waterpressure.
5.
CoolingWaterHoseand CableThruHullSeals
Theseareasand connectionsshouldbe keptsnugto preventwaterleakage.Replace
the water hose,cable seals,expansionboots every3rd year as insuranceagainst
failureand a possiblefloodedboat.
III.
OVERHAUL
OF JETDRIVE
Itisessentialyou
sectionlan llofthismanual.
arefamiliarwith
Propertroubleshooting
willhelpyou
determinewhich partsmust be removedfrom yourjet drive,or the boat,in orderto per{ormthe
necessaryrepairsor partsreplacement.
Startingat the backof thejet,outsidethe boat,.all
theparts
for steering,reversingand trim control are acceqsible.Next you have the bowl and impeller
assemblyandwearringandfinallythesuctionpiece.shaftandthrustbearingassemblyandfront
packingglandassembly.With carefulthought,you can do everythingexceptreplacethe thrust
bearingwithouttakingthe entirejet driveout of the boat.Only in rare instancesshouldengine
removalever be necessary.
A.
Disassembly(re-assembly
of the steeringand reversingmechanism)
16
In this assembly,all the partsare externaland no sealbetweenthe jet driveand hull needsto,be
broken,unlessyouarereplacingcablepackingglands;items(#18, #15 and #16).Seethetran(#27).Normallyrepairsinthisareawillcenteraroundreplacement
of
somhousingpaftsillustration
gasket(#17)andthe4 bushing(#29) page7on thelowerpivotshaft,
opensteeringshaftandthe
two reversegate shafts.
1.
b.
e.
2.
a.
b.
3.
b.
d.
e.
pins,(#55,#15 and#16 - 2ea.)inordertoseparatethe
Removethe
reversegatefrom
the steeringnozzleand the steeringnozzleand the steeringnozzle(#6) from the
nozzlehousing(#5).
'1"
Removethe 5/16" x
socketheadcup screw(#42) from the leftand right reverse
pivot
gate
shafts.
Pushthe pivotshaftsintothe steeringnozzleuntilthereversegateis free.Useof a solventsuchas liquidwrench,WD-40and a driftand hammermay be requiredwhere
unitshavebeenin servicea longtime,especiallyin salt or brackishwater.
Lift off the reversegate, inspect and set aside for replacement,repaint or reinstallation.
Remove2 nylonbushing(#29) and inspect.Eitherreplaceor save if no wear or
damageis apparent.
Remove5/16' x 1" socketheadcapscrew(#42) from lowersteeringpivotshaft.
Pushshaft up into nozzlearea.Be cautiousthe pin does not fall into the bowl and
causelossof timefishingit out.lt is stainlesssteelso a magnetdoesnot work.
Removethe tillershaftset screw(5/16"x 3/4 #43) usinga5/16 openend wrench.
Notethis set screw has a nylonlock button.The screwsshouldalwaysbe replaced
whenit has beenremoved.
Removeupperwoodruffkey(#36) afterremovingtillerarmand pushor tap the tiller
shaft(#15)downthroughthe nozzlehousing.
Inspectthe nylonbushing(#29) and discardif worn.
lnspectthe woodruffkeys(2 ea.)in the tillershaftand the keywaysin the nozzle(#6)
andsteeringhousing(#5).lf the keywayis wornyoursteeringwillbe looseandsteering failureis very possible.Replaceeitheror both of items #5 & #6 if they are
worn.
lnspecttheO-ring(#2Olon thesteeringnozzleand replaceif damaged.
A badO-ring
causesthrustlossaroundthe nozzle(especially
in turns)and excesswaterspray.
4.
Usea 1z box end wrenchor socketand ratchetto removethe 8 -5/16' x 3/4'capscrews
(#51) whichsecurethe nozzlehousingto the afterbowlface.Removethe nozzlehousing
and set asidethe gasket(#17')for replacement.
5.
Assemblyis reversal
of stepsa.throughj. Makesureallpartsareserviceable,
allthreadsare
partstoassureeasyassemblyand
clean.Usea ltghtgreasesuchas Lubriplateon
allmoving
freemovement.
tl
Note:Checkreversegateand steeringoperationafterre-assemblytoinsurefull portto,starboardsteeringand a full open reversegate in the forwardcontrolposition.
BOWLAND BOWLBEARING
Otherthanintroduction
of freshoilthroughtheoil reserveplugs(#48),removalof thebowlis
you
required
if
only
suspectforeignobjectsin the bowlvanes,loosebowl bearings,or you
mustremovethe impeller.
1.
Removethetransomhousing(#1) by disconnecting
the reversegatecable,steeringcable
and transomhousingretainingbolts.The housingis sealedusinggasket(#6)and O-ring
(#7).Mostbuildersalsoareliberalwith
G.E.SiliconeSealant,
so useof a largescrewdriver,
a
putty
pry
widestiff
knifeor rollinghead bar maybe necessarytobreakthe transomhousing
loosefrom the boattransomand jet drivebowl.
lf cablelengthspermit,thehousingmaybeslidaftandoffthebowl.lf thelengthsdo notpermit, the cable seals must be loosenedso the cablescan be removedfrom the transom
housing.
2.
Removethe bowl by removingthe 8 bowlto suctionpiececapscrews(#4) with a3/4,' box
end wrench.
a.
Separatebowl from suctionpieceand slideaft,off the impellershaft.
b.
Inspectbowl for damageto the bowl vanes,debrisin the vanes,worn bowl bearings
(#26) or bad seal(#28).
Bowl BearingReplacement
a.
Removethe end cap (#11) with a 15/16,,box end wrench.
b.
Drivethe bearingsforwardintothe bowl usinga bearingremovaltool or any suitable
drift which passesthe bowl end cap threadsand has a shoulderto seat on the
bowl bearing.
Drivefirstbearing(#26)intoborefromthefrontsideuntilthebearingfaceisflushwithe
boreshoulder.
Driverearbearing(#26) intobowlfromthe backsideuntilbearingfaceis flushwith
boreshoulder.
Installbowl bearingend cap (#11) usingLoctite(brown).
Installlipsealin bowlcounterborewiththelipfacingfonvard.Thissealdoesnotkeep
oil in; it keepsdebrisand highpressurewaterout of the bowl bearing.
c.
d.
e.
f.
Note:Wornbowlvanesmayberenewedbyfillingthedingsandbluntedges
offuntilthere
isa
fineedgefacingthe water.Thebowlvanesshouldbe dressedso allthe edgesarethe
samedistancefrom the frontof the bowl.
18
c.
lmpellerandWearRing
1.
nut(#32)usinga1 13/16"boxendwrenchora 1 13/16"socketwhich
Remove
theimpeller
has beenmodifiedso it will slip overthe impellershaftand hasa holdinghandlewelded
on.
The impellernut is a righthandthreadand turnscounterclockwisefor removal.
Note:In caseswherethe impellernut is frozento the shaftdueto extensiveimmersionin saltyor
water,it maybenecessaryto
useapenetrating
oil,applyheat,orevenuse
chemicallytainted
is stainless
steel,carefulapplication
of acutting
atorchtocutthenut.Sincetheimpellershaft
torchwill not damagethe shaftor shaftthreads.Usecaution!
Theimpellerhasa castingrooveon thehub.Usea pullerwiththreeor fourinsidejawsto grip
thehubindent.Tightenthejackingscrewandgiveita blowwitha ballpeenhammer.lt maybe
repeatthisprocedure
severaltimes
beforetheimpellerbreakslose.Liberaluse
necessaryto
oil may be required.
of a penetrating
Note: The impellerfitson a straightshaftsectionwith a longkeyway.Thereis a shoulderon the
shaftwhichthe frontof the impellerhub restsagainstwhenthe impelleris fullyseated.
2.
3.
Inspecttheimpellerfor brokenblades,cracksor excesswearon thewearringsealareaand
dingedor chippedleadingedgeson the impellerblades.
b.
4.
Thewearringareamay be dressedif therearegrovesworn in it and a newwearring
sizedto fit thesmallerdiameter.
Smallnicksand dingsor sandworn impellerbladeleadingedgesmay be renewed
usinga smalldie grinder,handfilesand crocuscloth.
Theproperbladeshapeis similarto anairfoilwiththeflatsideon thetop of thebladeandthe
curvedshapeontheunderneath
sideofthebladewhenyoulookattheimpellerfrom
thefront.
Theedgeshouldnot be knifesharp,but finishedto abouta 1/32ndradius.Tryto keepthe
leadingedgesof the bladesall the samelength.
(#13 & # 14)fromthesuctionpieceby pryingthepartsout.
Removethewearring& insulator
This is facilitedwith a smallrollinghead pry bar.Youwill removethe wear ring and the
plasticliner.
Discardthe wearringand insulatorif worn.
b.
c.
d.
Installa newwearringand insulatorin standardor an undersized
fit,accordingto the
impellereyesizeof yourimpeller.
Thewearringshouldhaverotatingclearanceonly,
whenthe impelleris installed.
Checkfinalfit by splippingthe impellerintothe installedwearring and rotatingthe
i mo e l l e r.
Re-checkfit afterthe bowl is installed.
19
5.
Reinstall
the impellerin reverseorder.
b.
on the shaftand key,thenslidethe impellerontothe
UsebrownLoctiteor Neverseize
shaftwith the key staftedintothe keyway.
Use a tube type driverwhichfits overthe impellerhub and seatthe impellertight
againstthe shaftshoulder.
Installthe impellernut and tightenit to about75 foot poundsor untilthe impelleris
seatedagainstthe shaftshoulder.
Note:lf youdrivethe impellerontotheshaftwithexcessforceandthefrontof theshaftis not
supported,yourhammerblowswill betransferredto thethrustbearingand smallflats
will be madeon the ballbearingalongwithdentsin thebearingraces.Result:premature thrustbearingfailure.The impellershouldbe a hand to light pressfit on the
shaft.
d.
1.
Shaft and bearingassemblyrepairsor replacementare possibleonce you have
removedthe impellerand the suctionpieceis out of the boat,or the enginehas
beenremoved.
Removalof the entirejet driveor suctionpieceassemblyonly are preferableto pulling
the engine.
b.
c.
assemblyby removingthe boltsand lockRemovethe suctionpieceassembly/pump
wash(#5 & #6) page28,whichsecuresthesuctionpieceto theintakehousingwhich
is fastenedto the hull.
Pryup on thesuctionpieeeto breakthegasketsealbetweenthesuctionpieceandthe
intakehousing.
Slidethe suctionpieceaft,outthe accessholein yourboattransom.Thesplinedshaft
will slipout of the U-jointwhichis fastenedto the engine.
Note:4 pointenginemountsrequireno supportfor the engine.lf you havea 3 pointmount
whichrestson thesuctionpiecehousing,a suitableliftmustbe providedfor the rearof
fromthesuctionpiece.lt isadvisable
theenginesothebellhousingcanbe unclamped
blockbetweenthehullandtheenginebellhousingtosafelysupport
to installawooden
the enginewhilethejet driveis removed.
2.
thebearinghousingandtapthebearbearingcapcapscrew(#49 - 4 each)from
Removethe
ing housingto removeit from the suctionpiece.
3.
Removethe shaftand bearingassemblyfrom the suctionpiece using a protectivewood
blockor soft malletand drivethe shaftforwardusinga heavyhammer.
4.
Removethe TruArc snapring(#31) fromthe shaft.
20
Pressthe bearingfrom the shaft usinga pressor suitablemechanicalbearingremoval/
installation
tool.Supportthebearingonthe innerracewhilepullingit fromtheshaftif youplan
to reuseit.
6.
Inspecttheshaft,
especiallythe
bowlbearingendandstraitness
in thesplinethrough
bearing fit areas.Repairor replaceas indicated.Undersizedbowl bearingsare not availableas
factory replacementparts, so the shaft must be sized to original specifications.Use the
undamagedforwardareato obtainshaftdiametermeasurements.
E.
Suctionpiece packing rings are removedeasilyonce the shaft is removed.
1.
2.
'
Removepackinggland nuts (#39) and removethe split packinggland.
Pry out old packingrings(#23, se{ of 5) and slip new packingrings into place.
Note:Removethe packingringsin a similarmannerif the shaftis in place.Usea packingpuller,or
makeone with a longselftappingsheetmetalscrew.Thepackingringsaresplitfor installation overthe shaft.Make sure to staggerthe splits in the rings in 90 degreeintervals.
F.
Reinstalltheshaftand bearingassernblyin the suctionpieceafterinstallingthe bearingon
the shaft.
1.
Installbearingso the thrustside (nogr@rrefor bearingballs)orside markedfor innerrace
thrustis towardthe shoulderon the im@fer shaft.Thethrustgoesfromthe shaftshoulderto
the innerbearingrace and throughthe bearingballsto the front face of the outer race.The
bearinghousingcap (#8) absotbsfte inpellert,. ustandclampstheouterraceso it cannot
spin or movefore and aft.
2.
Slidethe shaftand bearingintothe sr"rcfimfrbce and slidethe bearinghomeby pressingor
drivingon theouterraceonly.Drivirgat theshaftwilldamagethethrustbearingresultingin
prematurebearingfailure.
Tightenthe packinggland laghfy,ird rtfd thereis slightdrag on the impellershaft.Final
adjustmentshouldbe madewith the sM ttrn-€ and the pump shaftsubmerged.
4.
Referto step C, item 5 for impeler te-stalatin.
G.
Reinstallthesrctbn piee with sftdt Eng
rrd inpeller/wearring in the boat usinga new
gasket(*3) page28. Instaldirt cJttp sr.din pia- assemblyratherthanthe entirejet drive
makespcitioning the mil ad ffi
-sertin hb th€ splined U-jointeasier.
Note:You may pre{erb ftty csetrbb tte iet dhp beforeinstallation.In this case, help from a
second person or sspenfrg OE dhc frqn Ureorertread may expedite getting the shaft
splinesinto the U-iirt ild the sl"dbr fra€r- albnd without gasket damage.
21
Note:Youmayfindit helpfulto useheavygreaseor a gasketcompoundto helpholdthegasket
! in
placeon the intakehousing.
H'
Reinstall
allcomponents
inthereverseorderto theirdisassembly,
makingsureallsealsbetweenthe boatand the iet driveare intactto Gt" will be no ieakswhenyou watertest
yourboat.
Includeall partslists.
.SpecialNotes:
tl
1'.
^i
Allmodelsof
Berkeleyietdrivesaresimiliarsoonlyminorvariation
inassembly/disassembly
arerequired.
2'
Be especially
carefulof the rubberaccordionbootsusedundenrvater
on somemodels.A
puncture
small
or tearwill resultin a floodedboat.
3.
Berkeley
"E" or insertmodelietdrivesdo nothavean intakehousing.
Thesuctionpieceis
bondedto the hull.Removalof the shaftand bearingassemblyre-quires
removalof the
engine"
Wewouldliketo thankJackSeastrom
forhishelpwiththismanual.
Hisknowledge
andexpertise
wereinvaluable.
L
I
22
I
0dq0
I
A jet handlesquitedifferently
thanthe traditionalprop and rudder.
What makesa jet different,makes
it better!lt doesn'tdependupon hull
movementto attainfull power.
A prop unloadsas forwardspeedis
obtained,which letsthe engine
rev to full powerthat is only available
at full boat speed.With a jet, you
hit the throttle and take off right now,
with full power.When you reverse
a jet drive,you reverseright now.
When you turn, the jet, plus the
rudder,swingyou aroundin a supertight circle.
Youcan move a jet boat sideways
into tight dockingsituationsby
switchingfrom forward to reverse
while coordinatingthe steering.
23
BERKELEY PUMP COMPANY
MODETI2J JET-DRIVE
HP-RPMCURVE
203
CURVE
SECTION
3 P A G E2 . 0 2
DATE
l0-t0-83
SUPENSEDCS
C u r v e2 0 3 ,S e c . 3 ,P o . 2 . 0 2
Doiedl-21-71
MODELl2J
POWER
DEMANDOF JET-DRIVE
d
lrt
=
o
o
rd
tn
r,
o
r
F
lr:E
o
pER MTNUTE
(HUNDREDS)
REVoLUTToNS
S T A N D A RS
DI Z E SA 2 T H R UE O F I M P E L L E R S
9" DIAMETER
D I M E N S T O N( lSN C H E S )
SMALL DIAMETER
Figure I
24
12JGParts:- BM-7338,
11
T
@ ral
Y
I
I
Y
I
t
r7
(a)
g-fr,,Pp
\
l',lJ,/g
6d)
it
F
@@
.rc
SYm. Prr Unll
1
1
1
Bearino Cao
1
2
3
1
4
I
5
6
7
8
9
I
I
1
I
10
1
1l
1
12
1
r3
14
15
't6
OcacriDtion
Aluminumlmoeller
CommercialStainlesslmoeller
Bowl
SuctionPiece
Hand Hole Cover
NozzleHousino
Nozzle
PackinoGland
1
t
3
17
1
18
19
1
20
21
22
2
ZJ
5
1
1
1+
1
25
1
zo
a
27
28
1
29
4
1
Rev€rseBucket
PumoShaft
Bowl End Cao
Shaft Sleeve
Wear Rinq
Insulator
Tiller Shaft
Rev.BucketShaft
NozzleHso. Gasket
Eowl Gasket
Bro.Cao Gasket
Nozzle"O" Rinq
Wrench
R o cE n d
P a c k i n gR i n g s
HandHoldCover"O" Rinq
SuctionPieceSeal
EowlEearinqs
B r o . C a oS e a l
BowlSeal
NylinerB€arings
[tarl No.
Svm.
L02507
L05021
30
31
32
33
L03495
HO1727
M04128
L05026
L04501
s12727
s15338
LO4251
M05356
s09850
s14379
s10125
sl0068
sl5396
s1082s
s10870
s09017
s09018
s17737
s11543
s10907
s08287
s13734
s14380
sl4483
s14475
s14476
s14477
25
tar Unil
De3cription
ThrustBearino
41
11
8
42
3
Snao Rino
lmoellerNut
GroovePin
Gr6aseFittinq
lmpellerKey
Woodruff Kev
Slotted Nul
PackinoGland Eolt
PackinqGland Nut
5/16 Lock Washer
Bowl Bolts
Nozzle & Rev. Bucket Caoscrew
4:l
44
1
Set Screw
s2366s
1
45
2
Barbed Connector
5/16Hand Hole Nuts
Fastener
Faslener Screw
Oil Pioe PluqsS.S.
Brq. Cap Screws
R u d d e rK i t
Noz. Housing Capscral All6n heacl
Noz. Housing CapsbrewAllen h€ad
RudderBolt
Set Screw
RudderPin
Washer
CotterPin
GreaseFittinqCao
Bowl Drain Pluo
s14821
s23680
s14493
s25599
s13883
s26151
u
35
36
37
38
39
Q
46
47
1
Itrl No.
s14063
s14478
'|
2
'|
1
2
1
2
2
I
,+8
2
2
49
4
50
EI
7
52
54
55
56
57
58
1
'|
1
s12005
s14479
s14480
51,+482
s14481
s32400
s23574
s2657-1
s23088
s23621
s25959
807486
s25959
s25958
s32334
s23665
sl6753
s23063
s2661I
s16549
s13880
12JC& 12JGPackageTransomHousingMountingKits
BM-6491,
BM-6492
Rcoulod Frr Unit
sym.
D.acdptlon
Pln No.
fi,rc
r2JC
12JG
I2JG
Bt4{91
I
Transom Housinq, 90 to 180(Standard)
Transom Housino. (P to 90
H{2Cl9
2
3
TransomHousinqScrew(1/4"x 2" LonqF.H.)
liansom Housino Washer (1/4" Flat)
H-O2503
925672
923061
4
TransomHousinqNut (1/4"Hex)
5
6
7
I
9
10
11
12
13
14
t5
t6
17
18
19
20
21
22
23
24
B[{4git
1
t
8
$23481
8
I
8
Transom Flowino Screlv. #14 She€l Metal x 1" Lo.
s-26413
2
2
RubberGasketfor TransomHousinq
BowlSeal"O" Rino
Tiller
$13166
1
I
913731
M{564s
1
1
1
1
2
2
$16@9
t
915412
$'r5414
915426
2
1
2
U-^1il27
S{9/|88
2
2
1
1
S.13530
2
2
$13531
915388
I
I
1
1
Tilfer Set Screw (5/16"-18x 314' Lo. So. Hd. Set Screw)
Hwerse Cable Adiustinq Nul (BM{592)
92366s
s-15413
Retaininqclip (BM€592)
Bwerse ControlArm Pin (BM-6592)
NylinerBearins(BM€592)
ReverseCablePackerNut (BM€593)
Fewrse CabloPackerWasher(BM€593)
Rarerse Cable Packer Grommet (BM-6593)
SteerinoTubeNut (7/8")
St€erinoTubeBushino
Steerino Adaot€r Tube - Morse Steerino Onlv
Steerinq Maoter Tube - Ridequide & Teleflex
Steerino Adaoter Tube - Steermaster& Marmac
Adader - SteermasterSteerinq Onlv
Caoscrew.Str. to Tiller - Morse & Rideouide
91396s
s-l3529
1
1
1
I
I
1
92*r1
916238
I
1
932364
$,26457
26
I
1
1
1
1
1
913665
SoacerNut, Str.lo Tiller- Morse& Ridecuide
3l&24 Ntock Nul
DrainPfus(B'O75721
I
t
I
t
12J Parts- BM-6491,BM-6492
12JC& 12JGPACKAGE
TRANSOMHOUSING
MOUNTING
KITS
Transom
Housing,Gaskets,
Tiller,SteeringAdapter,
Tubeand all
necessaryfasteners.
For0oto 90Transom
Catafog Nu mber 0203-8.-064512
For9oto 180Transom
CatalogNumber 0203-8-06491
ffi
qge
9
€
o
6
@
o
27
12JPackagelntakeAdapterMountingKits
BM-5912,
BM-6309,
BM-6667
INTAKEADAPTERMOUNTINGKITS
IncludeslntakeAdapter,Grate,Gasketand all necessary
fasteners.
FlqtInsideMountwithFinsand FlatHeadMachineScrews(1)
CaiatogNumber0203-8-06309
l2degreewithfinsand FlatHeadMachineScrews(2)
CatalogNumber020$8{5812
FlatOutsideMountwithfinsand FlatHeadMachineScrews(5)
CatalogNumber0203-8-06667
R--FI
,?,
(A.B}
rD
\
'$
RequledPerUnlt
1
Prrt No.
Descrlpllon
Sym.
lnt. Adaot.. 120with Fins
Int. MaDt.. Flat Botlom with Fins
H-2155
H-2481
Int.Adapt.,FlatOutsideMt.,w/Fins
H-n68
L-3306
BM-5812
BM-6309
Btrl{667
1
1
1
2-A
2-B
2-C
WeedlessGrate
Soeed Grate (Standard)
L-2818
L-5767
Selectone
as
Required
3
Gasket.Suctionto lntakeAdaoter
L-2850
1
s-26402
4
4
4
14
14
14
Rock Grate
1
1
1
Grateto IntakeAdaeterFasteners
4-A
114'-20x 3/4" Lq. F.H. PhiliDsTaotiteScrews
Jet-Drlveto IntakeAdapterFasteneF
5
6
7-A
7-B
&A
9-A
9-B
1G.A
1GB
5/16"-18x 1" Lo. Hex. Hd. MachineScrew
5/'16"Lock Washer
Hull to Intake Adapter Fasleners
1/4"-20NCx 2" Lo. F.H.MachineScrew
5/16"-20NCx 2" Lo. F.H.Machine Screw
$23540
923088
14
14
14
*25672
14
16
114'-20NCx2-112"
Lq.F.H.Machine
Screw
HexNuts
1/4'-20NC
5/16"-18HexNuts
925674
2
16
2
18
16
18
925682
1/4" Flat Washers
923481
s-15981
s-23061
5/16"FlatWashers
s-23062
28
20
20
20