FormNo.3415-967RevB
E-ZVac
™
HDTwinBagger
ZeroTurnRadiusRidingMower
ModelNo.78431—SerialNo.400000000andUp
Registeratwww.Toro.com.
OriginalInstructions(EN)
*3415-967*B
WARNING
CALIFORNIA
Proposition65Warning
UseofthisproductmaycauseexposuretochemicalsknowntotheStateofCalifornia
tocausecancer,birthdefects,orotherreproductiveharm.
Introduction
Readthisinformationcarefullytolearnhowtooperate
andmaintainyourproductproperlyandtoavoid
injuryandproductdamage.Youareresponsiblefor
operatingtheproductproperlyandsafely.
YoumaycontactTorodirectlyatwww.T oro.com
forproductsafetyandoperationtrainingmaterials,
accessoryinformation,helpndingadealer,orto
registeryourproduct.
Wheneveryouneedservice,genuineToroparts,or
additionalinformation,contactanAuthorizedService
DealerorT oroCustomerServiceandhavethemodel
andserialnumbersofyourproductready.Figure1
andFigure2orFigure3oridentifythelocationofthe
modelandserialnumbersontheproduct.Writethe
numbersinthespaceprovided.
g037983
Figure1
1.Baggermodelandserial-numberlocation
g003368
Figure2
1.Blowermodelandserial-numberlocation
g309299
Figure3
1.Blowermodelandserial-numberlocation
©2019—TheToro®Company
8111LyndaleAvenueSouth
Bloomington,MN55420
2
Contactusatwww.Toro.com.
PrintedintheUSA
AllRightsReserved
ModelNo.
SerialNo.
Thismanualidentiespotentialhazardsandhas
safetymessagesidentiedbythesafety-alertsymbol
(Figure4),whichsignalsahazardthatmaycause
seriousinjuryordeathifyoudonotfollowthe
recommendedprecautions.
g000502
Figure4
1.Safety-alertsymbol
Thismanualuses2wordstohighlightinformation.
Importantcallsattentiontospecialmechanical
informationandNoteemphasizesgeneralinformation
worthyofspecialattention.
Contents
Safety.......................................................................4
TowingSafety.....................................................4
SafetyandInstructionalDecals..........................5
Setup........................................................................7
1PreparingtheMachine.....................................9
2InstallingtheROPSPin....................................9
3InstallingtheWeightKit..................................10
4InstallingtheBaggerSupport(If
Applicable).....................................................11
5InstallingtheBaggerBrackets........................12
6InstallingtheTransmissionSupport................13
7InstallingtheCrossBrace..............................13
8InstallingtheBaggerFrame...........................14
9InstallingtheBags.........................................15
10InstallingtheHitchCover.............................15
11RemovingtheExistingBeltCover,
Bracket,andDischargeChute.......................16
12InstallingtheBlower-PulleyAssembly
andBelt-CoverBracket.................................17
13InstallingtheBafe.......................................20
14InstallingtheBlowerAssembly.....................21
15InstallingtheBlowerBelt,Spring,and
Blower-BeltCover.........................................24
16InstallingtheDischargeTubes.....................26
17AdjustingtheParkingBrake.........................28
18CheckingtheTirePressure..........................28
Operation................................................................29
EmptyingtheGrassBags.................................29
ClearingObstructionsfromtheBagger
System..........................................................30
RemovingtheBagger.......................................30
TransportingtheMachine.................................30
OperatingTips.................................................31
Maintenance...........................................................32
RecommendedMaintenanceSchedule(s)...........32
CleaningtheHoodScreen................................32
InspectingtheBaggerAttachment....................33
CleaningtheBaggerandBags.........................33
InspectingtheBlowerBelt................................33
ReplacingtheBlowerBelt.................................33
GreasingtheIdlerArmforBlowerModels
78433–78438................................................34
InspectingtheBagger.......................................35
InspectingtheMowerBlades............................35
SelectingtheMowerBlades.............................35
ReplacingtheGrassDeector..........................35
Storage...................................................................36
Troubleshooting......................................................37
3
Safety
•Becomefamiliarwiththesafeoperationofthe
equipment,withtheoperatorcontrols,andsafety
signs.
•Useextracarewithgrasscatchersorother
attachments.Thesecanchangetheoperating
characteristicsandthestabilityofthemachine.
•Followthemanufacturer'srecommendations
foraddingorremovingwheelweightsor
counterweightstoimprovestability.
•Donotuseagrasscatcheronsteepslopes.A
heavygrasscatchercouldcauselossofcontrol
oroverturnthemachine.
•Slowdownanduseextracareonhillsides.Be
suretotravelintherecommendeddirectionon
hillsides.Turfconditionscanaffectthestabilityof
themachine.Useextremecautionwhileoperating
neardrop-offs.
•Keepallmovementonslopesslowandgradual.
Donotmakesuddenchangesinspeed,direction,
orturning.
•Thegrasscatchercanobstructtheviewtothe
rear.Useextracarewhenoperatinginreverse.
•Usecarewhenloadingorunloadingthemachine
intoatrailerortruck.
•Neveroperatewiththedischargedeectorraised,
removedoraltered,unlessusingagrasscatcher.
•Keephandsandfeetawayfrommovingparts.Do
notmakeadjustmentswiththeenginerunning.
•Parkthemachineonlevelground,disengage
thedrives,andshutofftheenginebeforeleaving
theoperator'spositionforanyreasonincluding
emptyingthegrasscatcheroruncloggingthe
chute.
•Ifyouremovethegrasscatcher,besuretoinstall
anydischargedeectororguardthatmighthave
beenremovedtoinstallthegrasscatcher.Donot
operatethemowerwithouteithertheentiregrass
catcherorthegrassdeectorinplace.
•Donotleavegrassinthegrasscatcherfor
extendedperiodsoftime.
•Grasscatchercomponentsaresubjecttowear,
damageanddeterioration,whichcouldexpose
youtomovingpartsorallowobjectstobethrown.
Frequentlycheckcomponentsandreplacewith
themanufacturer'srecommendedparts,when
necessary.
TowingSafety
•Donotattachtowedequipmentexceptatthehitch
point.
•Followtheattachmentmanufacturer's
recommendationforweightlimitsfortowed
equipmentandtowingonslopes.
•Neverallowchildrenorothersinorontowed
equipment.
•Onslopes,theweightofthetowedequipmentmay
causelossoftractionandlossofcontrol.Reduce
towedweightandslowdown.
•Stoppingdistanceincreaseswiththeweightofthe
towedload.Travelslowlyandallowextradistance
tostop.
•Makewideturnstokeeptheattachmentclearof
themachine.
•Donottowaloadthatweighsmorethanthe
towingmachine.
4
SafetyandInstructionalDecals
Safetydecalsandinstructionsareeasilyvisibletotheoperatorandarelocatednearanyarea
ofpotentialdanger.Replaceanydecalthatisdamagedormissing.
decal133-8061
133-8061
decal126-4662
126-4662
1.Warning—readtheOperator’sManualforthecorrect
quantityofcounterbalanceweight(s).
2.Lossoftractionandsteeringorreducedstabilityhazard–Ez
Vaccounterbalanceweight(s)installedwithouttheEzVac
maycauselossoftractionandsteeringcontrol.TheEzVac
installedwithouttheEzVaccounterbalanceweight(s)can
causereducedstability.Installweight(s)onlywhentheEz
Vacisinstalled.
decal126-9451
126-9451
1.Thrownobjectshazard—Donotruntheblowerwithoutthe
entirecollectionsysteminstalledandlatched.
2.Warning–ReadtheOperator’smanualaboutcounterbalance
weightinstallation.
3.Lossoftractionandsteeringorreducedstabilityhazard–Ez
Vaccounterbalanceweight(s)installedwithouttheEzVac
maycauselossoftractionandsteeringcontrol.TheEzVac
installedwithouttheEzVaccounterbalanceweight(s)can
causereducedstability.Installweight(s)onlywhentheEz
Vacisinstalled.
decal126-4659
126-4659
1.Warning—hotpulley;allowtocool.
decal126-4853
126-4853
1.Impeller/Rotatingbladeshazard—keephandsawayfrom
movingparts.Keepallsafetydevicesinplaceandworking.
Donotreachintotheblowerunlesstherotationindicator
hasstopped.
5
decal106-5517
106-5517
1.Warning—donottouchthehotsurface.
decal126-9595
126-9595
1.Rotationindicator
2.Impeller/RotatingBladeshazard-Keephandsawayfrom
movingparts.Keepallsafetydevicesinplaceandworking.
Donotreachintotheblowerunlesstherotationindicator
hasstopped.DisengagethePTO,shutofftheengine,
removethekey,andwaitforallmovingpartstostop.
6
Setup
LooseParts
Usethechartbelowtoverifythatallpartshavebeenshipped.
ProcedureDescription
Qty.
Use
1
Nopartsrequired
–
Preparethemachine.
ROPS-pinassembly
2
Bolt(#10x3/4inch)
2
2
Washer(#10)
2
InstalltheROPSpin.
Weight2
Channelplate
2
Plate2
Tabbedplate2
Bolt(3/8x2-1/2inches)
4
Nut(3/8inch)
4
3
Flatweight2
Installtheweights.
Leftbaggersupport
1
Rightbaggersupport1
Leftsupportbracket
1
Rightsupportbracket1
Bolt(5/16x3inches)
4
Bolt(3/8x1inch)
2
Flangenut(5/16inch)
4
Flangenut(3/8inch)
2
4
Washer6
Installthebaggersupport.
Baggerbracket2
Bolt(3/8x1inch)
4
Washer4
5
Flangenut(3/8inch)
4
Installthebaggerbrackets.
6
Transmissionsupport1Installthetransmissionsupport.
Crossbrace
1
Bolt(5/16x1-1/4inches)
2
Flangenut(5/16inch)
2
7
Washer(3/8inch)
2
Installthecrossbrace.
Bagsupport1
8
Lock-pinassembly2
Installtheframe.
9
Bags2Installthebags.
10
Hitchcover1Installthehitchcover.
11
Nopartsrequired
–
Removetheexistingbeltcover,bracket,
anddischargechute.
7
ProcedureDescription
Qty.
Use
Blower-pulleyassembly1
Belt-coverbracket1
Speednut
1
Carriagebolt(1/4x3/4inch)
2
Locknut(1/4inch)
2
Locknut(3/8inch)
3
Blowerpulley1
Locknut(3/4inch)
1
Washer1
12
Pulleymount1
Installtheblower-pulleyassembly.
Bafe
1
Carriagebolt(5/16x7/8inch)
1
Flangenut(5/16inch)
1
Carriagebolt(3/8x7/8inch)
2
13
Flangenut(3/8inch)
2
Installthebafe.
Blowerassembly1
Pivotpin1
14
Rollpin(3/16x7/8inch)
1
Installtheblowerassembly.
Blower-beltcover1
15
Coverknob
1
Installthebaggerbelt,spring,and
blower-beltcover.
Uppertube1
Lowertube1
Bolt(#10x3/4inch)
3
Locknut(#10)
3
16
Washer(7/32inch)
3
Installthedischargetubes.
17
Nopartsrequired
–
Adjusttheparkingbrake.
18
Nopartsrequired
–
Checkthetirepressure.
Note:Determinetheleftandrightsidesofthemachinefromthenormaloperatingposition.
8
1
PreparingtheMachine
NoPartsRequired
Procedure
1.Parkthemachineonalevelsurface.
2.Movethemotion-controlleverstotheNEUTRAL-LOCKposition.
3.Engagetheparkingbrake.
4.Shutofftheengineandremovethekey.
g037289
Figure5
2
InstallingtheROPSPin
Partsneededforthisprocedure:
2
ROPS-pinassembly
2
Bolt(#10x3/4inch)
2
Washer(#10)
Procedure
1.Usea#18(0.170inchdiameter)drillbitanddrill
outthelanyardholeintheROPS(Figure6).
g038295
Figure6
1.Drillwitha#18(0.170inch
diameter)drillbit
3.Self-tappingscrew(#10x
3/4inch)
2.Washer(#10)4.ROPSpin
9
2.Usetheself-tappingscrew(#10x3/4inch)and
washertosecuretheROPS-pinassemblyto
eachsideoftheROPSassembly(Figure6).
3.InserttheROPSpinintotheholeintheROPS
(Figure6).
3
InstallingtheWeightKit
Partsneededforthisprocedure:
2Weight
2
Channelplate
2Plate
2Tabbedplate
4
Bolt(3/8x2-1/2inches)
4
Nut(3/8inch)
2Flatweight
Procedure
1.Usethebolts(3/8x2-1/2inches),nutstosecure
theplatestotheweight(Figure7).
g185955
Figure7
1.Weight4.Tabbedplate
2.Channelplate5.Bolt(3/8x2-1/2inches)
3.Plate
6.Nut(3/8inch)
2.Addtheatweighttotheweightassemblyfora
machinewitha122cm(48inches)mowerdeck
(Figure8).
g037628
Figure8
1.Nut(3/8inch)
3.Weightassembly
2.Flatweight
3.Usetheknob,washer,andcarriagebolt(3/8x
3-1/2inch)tosecureacasterweighttoeach
casterarm(Figure9).
g037891
Figure9
1.Carriagebolt(3/8x3-1/2inch)
2.Weight
3.Washer
4.Knob
5.Casterarm
10
4
InstallingtheBagger
Support(IfApplicable)
Partsneededforthisprocedure:
1
Leftbaggersupport
1Rightbaggersupport
1
Leftsupportbracket
1Rightsupportbracket
4
Bolt(5/16x3inches)
2
Bolt(3/8x1inch)
4
Flangenut(5/16inch)
2
Flangenut(3/8inch)
6Washer
Procedure
1.Removetheboltsandnutsthatsecuretheupper
trimtothemachine(Figure10).
Note:Donotperformthisstepona1500
Seriesmachine.
g037892
Figure10
1.Flangenut3.Bolt
2.Uppertrim
2.Removetheboltsandnutsthatsecuretheleft
sideoftherearguardtotheframe(Figure11).
Note:Performthefollowingstepson1sideof
themachine,thentheother.
g038184
Figure11
1.Boltsecuringtheofthe
rearguard
3.Flangenutsecuringthe
rearguard
2.Rearguard
3.Aligntheholesinthesupportbrackettothe
holesintheframe(Figure12).
g037985
Figure12
1.Bolt(5/16x3-1/4inches)3.Supportbracket
2.Washer
4.Insertthe2bolts(5/16x3-1/4inches)with
washersintotheholes(Figure12).
Note:Donotinstalltheangenutsatthistime.
5.Looselyinstallthebolt(1inch),washer,and
angenutthatsecuresthebaggermounttothe
transmissionmount(Figure13).
11
g037987
Figure13
1.Flangenut(3/8inch)5.Bolt(5/16x3-1/4inches)
2.Washer6.Washer
3.Bolt(3/8x1inch)7.Flangenut(5/16inch)
4.Baggermount
8.Supportbracket
6.Aligntheholesinthebaggermounttothe2
boltsthatyouinsertedearlierandsecureitwith
the2angenuts(Figure13).
7.Tightenallthehardwarethatyouinstalled.
8.Performpreviousstepsontheothersideofthe
machine.
5
InstallingtheBagger
Brackets
Partsneededforthisprocedure:
2Baggerbracket
4
Bolt(3/8x1inch)
4Washer
4
Flangenut(3/8inch)
Procedure
1.Usethe2bolts(3/8x1inch),2washers,and
2nutstosecurethebaggerbrackettothe
machine(Figure14).
g037986
Figure14
1.Bolt(3/8x1inch)
3.Baggerbracket
2.Washer
4.Flangenut(3/8inch)
2.Performpreviousstepsontheothersideofthe
machine.
12
6
InstallingtheTransmission
Support
Partsneededforthisprocedure:
1Transmissionsupport
Procedure
1.Removethe2angenutsfromthesupportbolts
ontheleftandrighttransmissionsandsetthem
aside(Figure15).
g189547
Figure15
1.Supportbolt
3.Transmissionsupport
2.Flangenut
2.Alignthebrackettothesupportboltsandsecure
themwiththe2angenutsyouremovedinthe
previousstep(Figure15).
7
InstallingtheCrossBrace
Partsneededforthisprocedure:
1
Crossbrace
2
Bolt(5/16x1-1/4inches)
2
Flangenut(5/16inch)
2
Washer(3/8inch)
Procedure
1.Looselyinstallthe2bolts(3/8x1-1/4inches),
washers,andangenutstoholdthecrossbrace
onthesupportbracket(Figure16).
g189869
Figure16
1.Crossbrace4.Washer(3/8inch)
2.Flangenut(5/16inch)5.Bolt(3/8x1-1/4inches)
3.Flangenut(3/8inch)6.Bolt(5/16x1-1/4inches)
2.Looselyinstallthebolt(5/16x1-1/4inches)and
angenut(5/16inch)toholdthecrossbraceto
therearguard(Figure16).
Note:Leavethecrossbarhardwarelooseuntil
youalignthebaggerframe.
13
8
InstallingtheBaggerFrame
Partsneededforthisprocedure:
1Bagsupport
2Lock-pinassembly
Procedure
1.Arrangethebaggerframearoundthepivotpins
onthesupportbracketandrotateitforward
(Figure17).
g038186
Figure17
1.Pivotpin
2.Baggerframe
2.Insertthelockpinthroughthebaggerframeand
crossbrace(Figure18).
Note:Youmayneedtoloosenthehardwareto
alignthelockpintothehole.
g038187
Figure18
1.Hairpincotter2.Lockpin
3.Usethehairpincottertosecurethelockpin
(Figure18).
4.Tightenallloosehardware.
14
9
InstallingtheBags
Partsneededforthisprocedure:
2Bags
Procedure
1.Hookthebagtothebaggerframe(Figure19).
g038192
Figure19
1.Baggerframe
2.Bag
2.Closeandlatchthehoodassembly.
10
InstallingtheHitchCover
Partsneededforthisprocedure:
1Hitchcover
Procedure
1.Applyalubricanttothenippleonthehitchcover.
2.Alignthehitchcoveroverthehitchandpressit
intoplace(Figure20).
g211241
Figure20
1.Hitchcover3.Hitch
2.Nipple
15
11
RemovingtheExisting
BeltCover,Bracket,and
DischargeChute
NoPartsRequired
Procedure
Note:Cleantheareaaroundthebeltcoverbefore
removingit.
1.Lowerthemowerdecktothelowestheight-of-cut
position.
2.Removetherightbeltcover(Figure21).
g038092
Figure21
3.Removetherightbelt-coverbracket,2washers
(60-inchmowerdeckonly),and2angenuts
fromthemowerdeck(Figure22).
Note:Retainthehardwarethatyouremoved
duringthisproceduresothatitisavailablefor
changeover.
g038093
Figure22
1.Rightbelt-coverbracket3.Flangenuts
2.Washers-onlyon152cm
(60inch)mowerdeck
4.Removethelocknut,bolt,spring,andspacer
holdingthedeectortothepivotbrackets
(Figure23).
g015594
Figure23
1.Bolt
5.Springinstalled
2.Spacer6.Grassdeector
3.Locknut
7.J-hookendofspring
4.Spring
5.Removethegrassdeector(Figure23).
16
12
InstallingtheBlower-Pulley
AssemblyandBelt-Cover
Bracket
Partsneededforthisprocedure:
1Blower-pulleyassembly
1Belt-coverbracket
1
Speednut
2
Carriagebolt(1/4x3/4inch)
2
Locknut(1/4inch)
3
Locknut(3/8inch)
1Blowerpulley
1
Locknut(3/4inch)
1Washer
1Pulleymount
Procedure
1.Onthemachine,removethespringtensionfrom
thespring-loadedidlerpulley;refertoFigure24
orFigure26.
Note:For1500and2000Seriesmower
decks,usethespring-removaltool(T oroPart
No.92-5771)toremovethespringfromthe
mower-deckpost(Figure25).
Note:For2500Seriesmowerdecks,usea
ratchetinthesquareholeintheidlerarmto
removetensionontheidlerspring(Figure26).
g036861
Figure24
Models78433,78434,78435,78401,78402,and78403
1.Clutchpulley3.Spring-loadedidlerpulley
2.Mowerbelt
4.Spring
g028279
Figure25
Models78433,78434,78435,78401,78402,and78403
1.Spring-removaltool(Toro
PartNo.92-5771)
4.Idlerarm
2.Idlerspring5.Mowerbelt
3.Mower-deckpost
17
g036865
Figure26
Models78436,78437,78438,78404,78405,and78406
1.Clutchpulley
4.Ratchet
2.Mowerbelt
5.Squareholeintheidler
armfortheratchet
3.Spring-loadedidlerpulley
2.Removethebeltfromtherightmower-deck
pulley.
3.Useawrench(1-1/2inches)toholdthespindle
shaft,asyouremovethelocknut(3/4inch)and
washerfromthespindleshaft(Figure27).
Note:Setasidethelocknut(3/4inch)and
washerforblower78436,78437,78438,78404,
78405,and78406.
g038095
Figure27
1.Locknut(3/4inch)3.Rightspindleshaft
2.Washer
4.Useawrench(1-1/2inches)toholdthespindle
shaft,asyouinstallthedoublepulleyontothe
rightspindleshaft.
•ForblowerModels78433,78434,78435,
78401,78402,and78403,performthe
followingprocedure:
A.Usethelocknut(3/4inch)andwasherto
securethenewdoublepulleyontothe
rightspindleshaft(Figure28).
B.Torquethelocknut(3/4inch)to176to
217N∙m(130to160ft-lb).
g038253
Figure28
1.Locknut(3/4inch)
3.Doublepulley
2.Washer
4.Rightspindleshaft
•ForblowerModels78436,78437,78438,
78404,78405,and78406,performthe
followingprocedure:
A.Insertthethreadedstudsonpulley
mountthroughtheholesinthedeck
pulley(Figure29).
B.Usethelocknut(3/4inch)andwasher
thatyousetasideearliertosecurethe
deckpulleytothespindleshaft(Figure
29).
C.Torquethelocknut(3/4inch)to176to
217N∙m(130to160ft-lb).
D.Arrangetheblowerpulleyontothe
threadedstudsandlooselyinstallthe
locknut(Figure29).
E.Rotatetheblowerpulleyclockwiseuntil
itstops.
F.Torquethe3locknutsto18N∙m(13
ft-lb).
18
g188637
Figure29
1.Locknut(3/8inch)
5.Existingdeckpulley
2.Blowerpulley6.Pulleymount
3.Locknut(3/4inch)7.Rightspindleshaft
4.Washer
5.Ensurethatthebladeboltistorquedto115to
149N∙m(85to110ft-lb).
6.Installthemowerbeltaroundthelowerpulleyof
thedoublepulley(Figure30).
g038097
Figure30
1.Lowerpulley2.Mowerbelt
7.Installthebelt-coverbrackettothemowerdeck
using2carriagebolts(1/4x3/4inch)and2
locknuts(1/4inch)asshowninFigure31.
8.Installthespeednutontothebelt-coverbracket
(Figure31).
g038112
Figure31
1.Carriagebolt(1/4x3/4
inch)
3.Speednut
2.Belt-coverbracket
4.Locknut(1/4inch)
9.Installthemowerdeckbeltaroundthe
spring-loadedidlerpulley(Figure24orFigure
26).
10.Usethespring-removaltool(ToroPart
No.92-5771)toattachthespringtothe
spring-loadedidlerpulley.
19
13
InstallingtheBafe
Partsneededforthisprocedure:
1
Bafe
1
Carriagebolt(5/16x7/8inch)
1
Flangenut(5/16inch)
2
Carriagebolt(3/8x7/8inch)
2
Flangenut(3/8inch)
Procedure
1.Removethe2existingangenuts(3/8inch)and
2carriagebolts(3/8x7/8inch)fromthemower
deck(Figure32).
g038113
Figure32
1.Flangenut(3/8inch)2.Carriagebolt(3/8x7/8
inch)
2.Installthebafeusingthecarriagebolt(5/16x
7/8inch),angenut(5/16inch),2carriagebolts
(3/8x7/8inch),and2angenuts(3/8inch)as
showninFigure33.
g038289
Figure33
1.Flangenut(3/8inch)4.Flangenut(5/16inch)
2.Carriagebolt(3/8x7/8
inch)
5.Carriagebolt(5/16x7/8
inch)
3.Bafe
20
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