Toro 31905 Operator's Manual

FormNo.3421-778RevA

Groundsmaster

®

1200SeriesPull

BehindRotaryMower

ModelNo.31905—SerialNo.400000000andUp

Registeratwww.T oro.com.
OriginalInstructions(EN)

*3421-778*A

ThisproductcomplieswithallrelevantEuropean
directives;fordetails,pleaseseetheseparateproduct
specicDeclarationofConformity(DOC)sheet.

Thismachinehasbeendesignedinaccordancewith
ANSIB71.4-2012.

WARNING

CALIFORNIA

Proposition65Warning

Useofthisproductmaycauseexposure

tochemicalsknowntotheStateof

Californiatocausecancer,birthdefects,

orotherreproductiveharm.

g249978

Figure1

1.Modelandserialnumberlocation

ModelNo.

SerialNo.

Introduction

Thismachineisintendedforusebyprofessional,
hiredoperatorsincommercialapplications.Itis
designedformowinggrassonwell-maintained
lawnsinparks,golfcourses,sportselds,andon
commercialgrounds.

Important:Readthisinformationcarefullyto

learnhowtooperateandmaintainyourproduct
properlyandtoavoidinjuryandproductdamage.
Youareresponsibleforoperatingtheproduct
properlyandsafely.

Visitwww.Toro.comforproductsafetyandoperation
trainingmaterials,accessoryinformation,helpnding
adealer,ortoregisteryourproduct.

Wheneveryouneedservice,genuineToroparts,or
additionalinformation,contactanAuthorizedService
DealerorToroCustomerServiceandhavethemodel
andserialnumbersofyourproductready.Figure1
identiesthelocationofthemodelandserialnumbers
ontheproduct.Writethenumbersinthespace
provided.

Thismanualidentiespotentialhazardsandhas
safetymessagesidentiedbythesafety-alertsymbol
(Figure2),whichsignalsahazardthatmaycause
seriousinjuryordeathifyoudonotfollowthe
recommendedprecautions.

g000502

Figure2

1.Safety-alertsymbol

Thismanualuses2wordstohighlightinformation.
Importantcallsattentiontospecialmechanical
informationandNoteemphasizesgeneralinformation
worthyofspecialattention.

Important:Withyourmobiledevice,youcan

scantheQRcodeontheserial-numberdecal(if
equipped)toaccesswarranty,parts,andother
productinformation.

©2018—TheToro®Company
8111LyndaleAvenueSouth
Bloomington,MN55420

Contactusatwww.Toro.com.

2

PrintedintheUSA

AllRightsReserved

Contents

Safety

Safety.......................................................................3

GeneralSafety...................................................3

SafetyandInstructionalDecals..........................4

Setup........................................................................6

1ApplyingtheEntanglementDecal....................6

2InstallingtheDeckCoverKnobs.......................7

3AdjustingtheDrawbarPositionoftheT ow

Vehicle............................................................7

4AdjustingtheT owBaroftheMower..................7

5ConvertingthePinT owBartoaPintleTow

Bar..................................................................8

6RoutingtheDeck-LockRopeatthe

Mower.............................................................8

ProductOverview...................................................10

Specications...................................................11

Attachments/Accessories..................................11

BeforeOperation..................................................11

BeforeOperationSafety....................................11

TractorControls................................................12

OutcrossTractionUnitControls........................12

PTOSpeed.......................................................12

TrainingPeriod.................................................12

CheckingtheTireAirPressure..........................12

CheckingthePTOandDriveShaft

Guards..........................................................13

UsingtheT owBarJack.....................................14

AssemblingtheMowertotheT ow

Vehicle..........................................................15

DuringOperation.................................................19

DuringOperationSafety...................................19

SlopeSafety.....................................................20

LoweringtheMowerDecksfromthe

TransportPosition.........................................20

RaisingtheMowerDeckswhileCutting

Grass............................................................21

RaisingtheMowerDeckstotheTransport

Position.........................................................21

AdjustingtheHeight-of-Cut...............................22

MakingaSharpTurn........................................23

AfterOperation....................................................24

AfterOperationSafety......................................24

CleanandInspect.............................................24

Tie-DownPoints...............................................24

TransportingtheMachine.................................24

Maintenance...........................................................25

RecommendedMaintenanceSchedule(s)...........25

LiftingtheMower..............................................26

AccessingtheMowerDecks.............................26

Lubrication........................................................27

ServicingtheGearboxes..................................30

CheckingtheMowerBelts................................33

ReplacingtheMowerBelts...............................33

ServicingtheBlades.........................................35

AdjustingtheMowerPitch................................39

Storage...................................................................41

StoringtheMachine..........................................41

GeneralSafety

Thisproductiscapableofamputatinghandsand
feetandofthrowingobjects.Alwaysfollowallsafety
instructionstoavoidseriouspersonalinjury.

Usingthisproductforpurposesotherthanitsintended
usecouldprovedangeroustoyouandbystanders.

•Readandunderstandthecontentsofthis

Operator’sManualbeforeusingthemower.

•Useyourfullattentionwhileoperatingthetow

vehicleandmower.Donotengageinanyactivity
thatcausesdistractions;otherwise,injuryor
propertydamagemayoccur.

•Donotputyourhandsorfeetnearmoving

componentsofthemachine.

•Donotoperatethemowerwithoutallguards

andothersafetyprotectivedevicesinplaceand
workingonthemachine.

•Keepclearofanydischargeopening.Keep

bystandersandpetsasafedistanceawayfrom
themower.

•Keepchildrenoutoftheoperatingarea.Never

allowchildrentooperatethetowvehicleorthe
mower.

•Stopthemachine,engagetheparkingbrake,

shutofftheengine,removethekey,andwait
forallmovingpartstostopbeforeservicingor
uncloggingthemower.

Improperlyusingormaintainingthismowercanresult
ininjury .T oreducethepotentialforinjury,complywith
thesesafetyinstructionsandalwayspayattention
tothesafety-alertsymbol
Warning,orDanger—personalsafetyinstruction.
Failuretocomplywiththeseinstructionsmayresultin
personalinjuryordeath.

,whichmeansCaution,

3

SafetyandInstructionalDecals

Safetydecalsandinstructionsareeasilyvisibletotheoperatorandarelocatednearanyarea
ofpotentialdanger.Replaceanydecalthatisdamagedormissing.

110-4668

1.Entanglementhazard,shaft—stayawayfrommovingparts.

2.PTOspeedandinputdirection.

3.Usecliptosecurelashcablewhennotinuse.Uselash
cabletosupportthepowertake-offwhenthemachineis
disconnectedfromtractor.

decal110-4668

117-4979

1.Entanglementhazard,belt—keepawayfrommovingparts;
keepallguardsandshieldsinplace.

119-6807

1.Warning—nostep

120-0625

1.Pinchpoint,hand—keephandsaway.

decal117-4979

decal120-6604

120-6604

1.Thrownobjecthazard—keepbystandersawayfromthe
machine.

2.Cutting/dismembermenthazardofhand,mower
blade—stayawayfrommovingparts;keepallguardsand
shieldsinplace.

3.Cutting/dismembermenthazardoffoot,mowerblade—stay
awayfrommovingparts;keepallguardsandshieldsin
place.

decal119-6807

decal120-0625

decal125-6110

125-6110

1.Crushinghazard—donotstandunderanypartofthe
machine.

decal133-8061

133-8061

4

decal138-3078

138-3078

1.Beltrouting

decal138-3087

138-3087

5

Setup

LooseParts

Usethechartbelowtoverifythatallpartshavebeenshipped.

ProcedureDescription

1

2

3

4

5

6

MediaandAdditionalParts

Description

Operator'sManual

Qty.

CEentanglementdecal

Knob6Installthedeckcoverknobs.

Nopartsrequired

Nopartsrequired

Nopartsrequired

Nopartsrequired

Qty.

1

Readthismanualbeforeusingthepullbehindrotary
mower.

1

–

–

–

–

Applytheentanglementdecal—CE
mowers

Adjustthedrawbarpositionofthe
machine.

Adjustthetowbarofthemower

Convertthepintowbartoapintletow
bar.

Routethedecklatchropeatthemower.

Use

Use

1

ApplyingtheEntanglement Decal

CEMowers

Partsneededforthisprocedure:

1

CEentanglementdecal

Procedure

Important:ThisprocedureisrequiredforallCE

countriesandanywhereEnglishiscommonly
spoken.

1.RotatethePTOshaftguardtoaccessthe
existingentanglementdecal(Figure3).

g262546

Figure3

1.Existingentanglement
decal

2.CEentanglementdecal

6

2.Cleantheexistingentanglementdecalandthe
guardareasurroundingthedecal.

3.RemovethebackingfromtheCEentanglement
decal.

4.PlacetheCEentanglementdecaloverthe
existingentanglementdecal(Figure3).

2

InstallingtheDeckCover Knobs

Non-CEMowers

Partsneededforthisprocedure:

6Knob

Procedure

1.Removethemowerdeckcovers;referto

RemovingtheDeckCovers(page26).

2.Removethepush-nutthatsecurestheboltto
thedeckcoverandremovetheboltfromthe
cover(Figure4).

3

AdjustingtheDrawbar PositionoftheTowVehicle

NoPartsRequired

Procedure

Adjustthedrawbar(Figure5)ofthetowvehicleto
theextendedposition;refertotheOperator’sManual
foryourtowvehicle.

g250235

Figure5

1.Drawbar(extendedposition)

Figure4

1.Bolt3.Push-nut

2.Deckcover

3.Installthemowerdeckcoverwiththeknob;refer
toInstallingtheDeckCovers(page27).

4.Repeatsteps1through3fortheremainingdeck
covers,

4

AdjustingtheTowBarof theMower

NoPartsRequired

g264078

AssessingtheJobSite

Considerthefollowingjobsiteconditionstodetermine
thetowbarpositionofthemower:

•Turfwithhillsanddipsinthecontour—setthetow

bartoashorterlength.

•Turfthatisprimarilyat—setthetowbartoa

longerlength.

Note:Youmayneedtotryanintermediateposition

tow-barlengthwhenjobsitehasamixtureofatand
hillyareas.

7

AdjustingtheTow-BarLength

Note:Thetowbarofthemowerhas5tow-bar

positionsallowingyoutoadjustthelength20cm(8
inches).

1.Removethe2angelocknuts,2capscrews,
and2washersthatsecurethehitchtubetothe
receivertube(Figure6).

Figure6

1.Hitchtube4.Flangenut

2.Capscrew

3.Washer

5.Receivertube

5

ConvertingthePinTowBar toaPintleTowBar

NoPartsRequired

Procedure

1.Removethehairpinthatsecuresthehitchpinto
thetowbar,andremovethehitchpin(Figure7).

g250236

2.Adjustthepositionofthehitchtubeinthe
receivertubeaccordingtothepositionthatyou
determinedinAssessingtheJobSite(page7).

3.Assemblethehitchtubetothereceivertubewith
theangelocknuts,capscrews,andwashers
thatyouremovedinstep1.

4.Torquethenutsandcapscrewsto91to113N∙m
(67to83ft-lb).

Figure7

1.Hitchpin5.Flangelocknut

2.Hairpin

3.Pintleeye

4.Flangebushing

2.Removetheangebushingfromthepintleeye
(Figure7).

6.Clevisbracket

7.Capscrew

g250399

3.Removethe2angelocknutsand2capscrews
thatsecuretheclevisbrackettothetowbar,and
removetheclevisbracket(Figure7).

Note:Retainthehairpin,hitchpin,ange

locknuts,capscrews,andclevisbracketto
convertthepintletowbartoapintowbar.

8

6

RoutingtheDeck-Lock
RopeattheMower

NoPartsRequired

Procedure

Routethefreeendofthedeck-lockropefromthelock
leverthroughthe2hoseguides(Figure8).

Figure8

1.Deck-lockrope

2.Locklever4.Hoseguide

3.Knottedendofthe

g260004

deck-lockrope

9

ProductOverview

g262052

Figure9

1.Rearmowerdeck

2.Decklock

3.Locklever

4.Outermowerdeck7.Quick-connectcoupling(PTOdrive

5.Guard(PTOdriveshaft)

6.Hoseguideanddriveshaftrest

shaft)

8.Hydraulichoses

Figure10

g262053

1.Deck-lockrope

2.Jack4.Roller

3.Guard(deckdriveshaft)5.Height-of-cutadjuster

10

Specications

Note:Specicationsanddesignaresubjectto

changewithoutnotice.

TowVehicleSpecication

MinimumPTOoutput-power
rating

RecommendedPTOspeed

PTORotationClockwise(viewedfrom

PTOspindle34.8mm(1-3/8inch)

Minimumhydraulicpressure

Towsystem

MowerSpecication

Weight

Tongueweight

26Kw(35hp)

540rpm

behindthetowvehicle)

diameter,6-spline

13790Kpa(2000psi)

Drawbarandpin—25mm

(1inch)diameter

Pintle

1354kg(2984lb)

313kg(691lb)

MowerSpecication(cont'd.)

WidthMow

HeightMow

Length

Widthofcut365cm(144inches)

Cutheight13to102mm(1/2to4.0

CuttingCapacity9.7km/h(6

MaximumTransport
Speed

position

Transport
position—13
mm(1/2
inch)HOC

position

Transport
position

Hitchfully
extend

mph)

381cm(150inches)

218cm(86inches)

78cm(31inches)

193cm(76inches)

371cm(146inches)

inches)

3.5hectar/hr(8.7acres
/hr)

30kph(19mph)

Attachments/Accessories

AselectionofToroapprovedattachmentsandaccessoriesisavailableforusewiththemachinetoenhance
andexpanditscapabilities.ContactyourAuthorizedServiceDealerorDistributororgotowww.Toro.comfora
listofallapprovedattachmentsandaccessories.

Toensureoptimumperformanceandcontinuedsafetycerticationofthemachine,useonlygenuineToro
replacementpartsandaccessories.Replacementpartsandaccessoriesmadebyothermanufacturerscouldbe
dangerous,andsuchusecouldvoidtheproductwarranty.

Operation

BeforeOperation

BeforeOperationSafety

GeneralSafety

•Neverallowchildrenoruntrainedpeopleto

operateorservicethemachine.Localregulations
mayrestricttheageoftheoperator.Theowner
isresponsiblefortrainingalloperatorsand
mechanics.

•Keepyourhandsclearofthejointpivotareas

whenhandlingthePTOdriveshaft.

•Donotstepon,overorunderthePTOordrive

shafts.

•Becomefamiliarwiththesafeoperationofthe

equipment,operatorcontrols,andsafetysigns.

•Knowhowtostopthemachineandshutoffthe

enginequickly.

•DonotusePTOsplineadaptersorextensions.

•Useonlyatowvehiclewiththemowerthathasa

maximumPTOspeedof540rpm(9rotationsper
second).

•Ensurethattheguardsandshieldsareproperly

installedandmaintained.Replacemissing,
damaged,orwornguardsandshieldsbeforeusing
themachine.

•EnsurethatthePTOdriveshaftdoesnotcontact

thedrawbar

•Beforemowing,alwaysinspectthemachineto

ensurethattheblades,bladebolts,andcutting
assembliesareingoodworkingcondition.
Replacewornordamagedbladesandboltsinsets
topreservebalance.

11

•Inspecttheareawhereyouwillusethemachine

andremoveallobjectsthatthemachinecould
throw.

•Ensurethatyourtowvehicleissuitableforuse

withamowerofthisweightbycheckingwithyour
towvehiclesupplierormanufacturer.

TractorControls

Becomefamiliarwithoperatingthefollowingtractor
controlsbeforeyouoperatethemower:

CAUTION

Arunningattachmentcancausepersonal
injury.

Toavoidpersonalinjury,donotleavethe
operator’sseatwithoutrstdisengaging
thePTOdrive,engagingtheparkingbrake,
shuttingofftheengine,andremovingthekey.
Ensurethatallsafetydevicesaresecuredin
theirproperplacebeforeresumingoperation.

•PTOengagement

•Engine/PTOspeed

•Therearattachmentcontrol(raise/lower)

•Auxiliaryvalveoperation

•Clutch

•Throttle

•Gearselection

•Parkingbrake

Important:RefertothetractorOperator's

Manualforoperatinginstructions.

OutcrossTractionUnit Controls

RefertotheOutcrosstractionunitOperator’sManual
forinformationoncontrolsandoperation,aswellas
additionalinformationonsettingupthevehicleforthis
attachment.

CheckingtheTireAir Pressure

ServiceInterval:Beforeeachuseordaily

DANGER

Lowtirepressuredecreasesmowerstability
whentransportingit.Thiscouldcausea
rollover,whichmayresultinpersonalinjury
ordeath.

Donotoperatethemowerwithunderinated
tires.

1.Checkthetireairpressuredaily.

Youshouldmeasure207kPa(30psi).

PTOSpeed

ThemowerisdesignedtooperatewithaPTOspeed
ofupto540rpm.Mosttowvehiclesindicatea540
PTOrpmpositiononthetachometer.

TrainingPeriod

Beforeusingthemower,ndaclearareaandpractice
usingtheit.Operatethetowvehicleatrecommended
gearsettingsandPTOdrivespeedsandbecome
thoroughlyfamiliarwithdrivingcharacteristicsofthe
towvehicleandthemower.Practiceraisingand
loweringmowerdecks,stopping,andstartingthe
PTOdrive,andaligningthemachinewithprevious
passes.Practicesessionsincreasecondenceinthe
operatingthemowerandhelpsensureuseofproper
techniquescuttinggrass.

g001055

Figure11

2.Ifthetireairpressureisnot30psi,addairtoor
removeairfromthetires.

12

CheckingthePTOand DriveShaftGuards

ServiceInterval:Beforeeachuseordaily

1.Ifinstalledtothetowvehicle,removethedrive
shaft.

2.RotatetheforwardhalfofthePTOshaftguarda
fullrotation(Figure12).

Note:Cleanorreplacetheshaftguardifitdoes

notrotatefreely.

g264215

Figure13

Figure12

1.PTOshaftguard(forwardhalf)

3.MovetheforwardhalfofthePTOshaftguard
togetherandaparttoensurethattheytelescope
freely(Figure12).

Note:Cleanorreplacetheshaftguardisit

doesnottelescopefreely .

4.Ifremovedfromthetowvehicle,installthedrive
shaft;refertoConnectingtheDriveShafttothe

PTO(page17).

5.Checkthattherestraintchainisinstalled
betweentheforwardPTOshaftguardanda
stationarypartonthetowvehicle(Figure13).

1.PTO-shaftguard(forward
half)

g262236

2.Restraintchain

6.Checkthattherestraintchainisconnectedto

therearPTOshaftguard,driveshaftguards,
andtheframeofthemower(Figure14and

Figure15).

Figure14

LeftDeck,RightDeck,andPTODrive-ShaftGuards

1.Restraintchain

2.Driveshaftguard

13

g262208

3.PTOshaftguard

Figure15

CenterDeckDrive-ShaftGuard

g262209

1.Driveshaftguard(center
deck)

2.Restraintchain

7.Checkthatthe7hoseclampsrmlysecurethe

drive-shaftguardstothecenteranddeckgear
boxes(Figure16).

Figure16

1.Hoseclamps

g250413

Figure17

1.Pin3.Jackpad

2.Tow-barjack4.Jackhandle

4.Aligntheholeinthetowbarwiththeholeinthe
jack(Figure17).

5.Insertthepinthroughtheholesinthetowbar
andjack(Figure17).

g264297

6.Rotatethejackhandleuntilthejackfully
supportstheweightofthemower.

7.Chockbothtiresofthemower(Figure18).

UsingtheTowBarJack

SupportingtheMowerwiththe Jack

1.Parkthemachineonalevelsurface,movethe
shiftlevertotheNEUTRALposition.

2.Engagetheparkingbrake,shutofftheengine,
removethekey,andwaitforallmovingparts
tostop.

3.Removethepinandrotatethetow-barjack
vertical(Figure17).

g256133

Figure18

1.Wheelchocks

14