Toro 03911 User manual

FormNo.3375-837RevC
18and22inchDPACuttingUnit
Reelmaster®3550SeriesTractionUnit
ModelNo.03911—SerialNo.313000001andUp
ModelNo.03912—SerialNo.313000001andUp
ModelNo.03913—SerialNo.313000001andUp
Registeratwww.Toro.com.
OriginalInstructions(EN)*3375-837*C

Introduction
Readthisinformationcarefullytolearnhowtooperateand
maintainyourproductproperlyandtoavoidinjuryand
productdamage.Youareresponsibleforoperatingthe
productproperlyandsafely.
YoumaycontactTorodirectlyatwww.Toro.comforproduct
andaccessoryinformation,helpndingadealer,ortoregister
yourproduct.
Wheneveryouneedservice,genuineToroparts,oradditional
information,contactanAuthorizedServiceDealerorToro
CustomerServiceandhavethemodelandserialnumbersof
yourproductready.Figure1identiesthelocationofthe
modelandserialnumbersontheproduct.Writethenumbers
inthespaceprovided.
Figure1
1.Locationofthemodelandserialnumbers
ModelNo.
SerialNo.
Thismanualidentiespotentialhazardsandhassafety
messagesidentiedbythesafetyalertsymbol(Figure2),
whichsignalsahazardthatmaycauseseriousinjuryordeath
ifyoudonotfollowtherecommendedprecautions.
Figure2
1.Safetyalertsymbol
Thismanualuses2otherwordstohighlightinformation.
Importantcallsattentiontospecialmechanicalinformation
andNoteemphasizesgeneralinformationworthyofspecial
attention.
Contents
Introduction..................................................................2
Safety...........................................................................3
SafetyandInstructionalDecals.................................3
Setup............................................................................4
1Inspection............................................................4
2CuttingUnitKickstand..........................................4
3AdjustingtheRearShield.......................................5
4RepositioningtheCounterWeights..........................5
ProductOverview..........................................................7
Specications.........................................................7
CuttingUnitAccessoriesandKits(seeparts
catalogforpartnumbers)......................................7
Operation.....................................................................8
Adjustments...........................................................8
HeightofCutChartTerms......................................10
HeightofCutChart................................................12
ServicingtheBedknife............................................16
Maintenance.................................................................18
Lubrication............................................................18
ServicingtheBedbar...............................................18
ServicingtheHDDualPointAdjusters
(DPA)...............................................................20
ServicingtheRoller.................................................21
©2014—TheToro®Company
8111LyndaleAvenueSouth
Bloomington,MN554202
Contactusatwww.Toro.com.
PrintedintheUSA.
AllRightsReserved

Safety
Hazardcontrolandaccidentpreventionaredependent
upontheawareness,concern,andpropertraining
ofthepersonnelinvolvedintheoperation,transport,
maintenance,andstorageofthemachine.Improper
useormaintenanceofthemachinecanresultininjury
ordeath.Toreducethepotentialforinjuryordeath,
complywiththefollowingsafetyinstructions.
•Read,understand,andfollowallinstructionsinthe
tractionunitoperatorsmanualbeforeoperatingthe
cuttingunit.
•Read,understand,andfollowallinstructionsinthis
operatorsmanualbeforeoperatingthecuttingunit.
•Neverallowchildrentooperatethetractionunitor
cuttingunits.Donotallowadultstooperatetractionunit
orcuttingunitswithoutproperinstruction.Onlytrained
operatorswhohavereadthismanualshouldoperatethe
cuttingunits.
•Neveroperatethecuttingunitswhenundertheinuence
ofdrugsoralcohol.
•Keepallshieldsandsafetydevicesinplace.Ifashield,
safetydeviceordecalisillegibleordamaged,repairor
replaceitbeforeoperationiscommenced.Alsotighten
anyloosenuts,bolts,andscrewstoensurecuttingunitis
insafeoperatingcondition.
•Alwayswearsubstantialshoes.Donotoperatecutting
unitswhilewearingsandals,tennisshoes,sneakersor
shorts.Also,donotwearloosettingclothingwhich
couldgetcaughtinmovingparts.Alwayswearlongpants
andsubstantialshoes.Wearingsafetyglasses,safetyshoes
andahelmetisadvisableandrequiredbysomelocal
ordinancesandinsuranceregulations.
•Removealldebrisorotherobjectsthatmightbepicked
upandthrownbythecuttingunitreelblades.Keepall
bystandersawayfromtheworkingarea.
•Ifthecuttingbladesstrikeasolidobjectortheunit
vibratesabnormally,stopandshuttheengineoff.Check
cuttingunitfordamagedparts.Repairanydamagebefore
restartingandoperatingthecuttingunit.
•Lowerthecuttingunitstothegroundandremovekey
fromignitionswitchwhenevermachineisleftunattended.
•Besurecuttingunitsareinsafeoperatingconditionby
keepingnuts,boltsandscrewstight.
•Removekeyfromignitionswitchtopreventaccidental
startingoftheenginewhenservicing,adjustingorstoring
themachine.
•Performonlythosemaintenanceinstructionsdescribedin
thismanual.Ifmajorrepairsareeverneededorassistance
isdesired,contactanAuthorizedToroDistributor.
•Toensureoptimumperformanceandsafety,always
purchasegenuineTororeplacementpartsandaccessories
tokeeptheToroallTORO.Neveruse"will-t"
replacementpartsandaccessoriesmadebyother
manufacturers.LookfortheTorologotoassure
genuineness.Usingunapprovedreplacementparts
andaccessoriescouldvoidthewarrantyofTheToro
Company.
SafetyandInstructionalDecals.
Safetydecalsandinstructionsareeasilyvisibletotheoperatorandarelocatednearanyareaofpotential
danger.Replaceanydecalthatisdamagedorlost.
93–6688
1.Warning—readthe
Operator’sManualbefore
performingmaintenance.
2.Cuttinghazardofhandor
foot—stoptheengineand
waitforallmovingpartsto
stop.
3

Setup
LooseParts
Usethechartbelowtoverifythatallpartshavebeenshipped.
ProcedureDescriptionQty.Use
1Cuttingunit1Inspectthecuttingunit
2Nopartsrequired–Usethekickstandwhentippingthe
cuttingunit
3Nopartsrequired–Adjusttherearshield
4Nopartsrequired–Mountthecounterweights
MediaandAdditionalParts
DescriptionQty.Use
Partscatalog1
Operator'sManual1Reviewthematerialandsaveinanappropriateplace:
O-ring1Usewhenmountingreelmotortocuttingunit
Note:Determinetheleftandrightsidesofthemachine
fromthenormaloperatingposition.
1
Inspection
Partsneededforthisprocedure:
1Cuttingunit
Procedure
Afterthecuttingunitisremovedfromthebox,inspectthe
following:
1.Checkeachendofthereelforgrease.Greaseshouldbe
visiblyevidentintheinternalsplinesofthereelshaft.
2.Ensurethatallnutsandboltsaresecurelytightened.
3.Makesurethecarrierframesuspensionoperatesfreely
anddoesnotbindwhenmovedbackandforth.
2
CuttingUnitKickstand
NoPartsRequired
Procedure
Wheneverthecuttingunithastobetippedtoexposethe
bedknife/reel,propuptherearofthecuttingunitwiththe
kickstand(suppliedwiththetractionunit)tomakesurethe
nutsonthebackendofthebedbaradjustingscrewsarenot
restingontheworksurface(Figure3).
4

g020158
Figure3
1.Cuttingunitkickstand
3
AdjustingtheRearShield
NoPartsRequired
Procedure
Undermostconditions,bestdispersionisattainedwhenthe
rearshieldisclosed(frontdischarge).Whenconditionsare
heavyorwet,rearshieldmaybeopened.
Toopentherearshield(Figure4),loosenthecapscrew
securingtheshieldtotheleftsideplate,rotatetheshieldto
theopenpositionandtightenthecapscrew.
g020159
Figure4
1.Rearshield2.Capscrew
4
RepositioningtheCounter
Weights
NoPartsRequired
Procedure
Allcuttingunitsareshippedwiththecounterweightmounted
totheleftendofthecuttingunit.Usethefollowingdiagram
todeterminethepositionofthecounterweightsandreel
motors.
Figure5
1.Onthe#2and#4cuttingunits,removethe2lock
nutssecuringthecounterweighttotheleftendofthe
cuttingunit.Removethecounterweight(Figure6).
5

2
2
g020160
Figure6
1.Counterweight2.Locknuts
2.Removethe2locknutsfromtherightsideplate
(Figure7).
g026187
Figure7
1.Locknut(2)
3.Installthecounterweighttotherightendofthe
cuttingunitandsecurewiththe2locknutspreviously
removed.
4.Installthe2reelmotormountinglocknutstotheleft
sideplateofthecuttingunit(Figure7).
6

ProductOverview
Specications.
ModelNumberNetWeight
0391139kg(86lb.)
0391240kg(88lb.)
0391343kg(94lb.)
CuttingUnitAccessoriesandKits(see
partscatalogforpartnumbers)
Note:Allaccessoriesandkitsare1percuttingunitunless
otherwisespecied.
GrassBasketKit:Aseriesofclippingcollectionbaskets
attachedtothefrontofthecuttingunitstocollectgrass
clippings.
RearRollerBrushKit:Ahighspeed,highcontactbrush
thatkeepstherearrollerfreeofgrassanddebris,which
maintainsaconsistentheightofcutandpreventsclumping.
Thisleadstoabetterafter-cutappearance.
GroomerKit:Rotatingbladesassembledbehindthefront
rollerwhichprovidethebestmethodforreducinggrain
andspongyturfbystandingupthegrassbeforecutting.
Thegroomeralsoknocksoffdewfordecreasedstickiness
andclumping,opensupcanopyforbettergrassclipping
integration,andliftsgrassforacleancrispcut.Theoverall
designimprovesthequalityofcutforhealthierturfgrass
whileimprovingtheaftercutappearance
BroomerKit:Multiplebrushstripswovenintothehelical
groomerbladesimprovetheeffectivenessofthegroomerkit.
Performanceofthegroomerisenhancedbyenablingafull
width"Brooming"effectofturfwhileopeningupcanopy
forbettergrassclippingintegration.Thecombinationof
groomerandbroomersystemsoptimizethequalityofcutand
after-cutappearanceformoreconsistentplayingconditions.
Comb/ScraperKit:Axedcombinstalledbehindthefront
rollerwhichhelpsreducegrainandspongyturfbystanding
upthegrassbeforecutting.AscraperforthefrontWiehle
rollerisincludedinthekit.
HighHOCKit:Newfrontrollerbracketsandadditional
spacersfortherearrollerallowsthecuttingunittoachieve
heightsofcutabove25mm(1.00inch).Thenewfrontroller
bracketsalsomovethefrontrolleroutfarthertoimprove
after-cutappearanceattheseheightsofcut.
ShoulderRoller:Helpsreduceover-lapmarksforwarm
seasongrasses(Bermuda,Zoysia,Paspalum).
CollarKit(4neededperroller):Helpsreduceoverlap
marksforwarmseasongrasses(Bermuda,Zoysia,Paspalum).
Thiskitisinstalledontheouterthreegroovesoftheexisting
Wiehleroller,butisnotasaggressiveastheShoulderroller.
LongRearRoller:Helpsreduceover-lapmarksand
mismatchbetweencuttingunitsforwarmseasongrasses
(Bermuda,Zoysia,Paspalum).
FullFrontRoller:Helpsproducemorepronouncedstriping
(repeatedcuttinginthesamedirection/path),however,
effectiveheightofcutisraisedandqualityofcutisreduced.
Scrapers(Wiehle,Shoulder,RearRoller,FullFront
Roller):Fixedscrapersforalloptionalrollersareavailable
forreducinggrassbuilduponrollerswhichcanaffectheight
ofcutsettings.
RollerRebuildKit:Includesallthebearings,bearingnuts,
innersealsandoutersealsrequiredtorebuildaroller.
RollerRebuildToolKit:Includesallthetoolsand
installationinstructionsrequiredtorebuildaroller.
7

Operation
Note:Determinetheleftandrightsidesofthemachine
fromthenormaloperatingposition.
Adjustments
AdjustingtheBedknifetotheReel
Usethisproceduretosetthebedknifetothereelandtocheck
theconditionofthereelandbedknifeandtheirinteraction.
Aftercompletingthisprocedure,alwaystestthecutting
unitperformanceunderyoureldconditions.Youmay
needtomakefurtheradjustmentstoobtainoptimalcutting
performance.
Important:Donotovertightenthebedknifetothereel
oryouwilldamageit.
•Afterbacklappingthecuttingunitorgrindingthereel,you
mayneedtomowwiththecuttingunitforafewminutes
andthenperformthisproceduretoadjustthebedknifeto
thereelasthereelandbedknifeadjusttoeachother.
•Youmayneedadditionaladjustmentsiftheturfis
extremelydenseoryourcuttingheightisverylow .
Youwillneedthefollowingtoolstocompletethisprocedure:
•Shim0.05mm(0.002inch)—Toropartnumber125-5611
•Cuttingperformancepaper—Toropartnumber125-5610
1.Positionthecuttingunitonaat,levelworksurface.
Turnthebedbaradjustingscrewscounterclockwiseto
ensurethatthebedbardoesnotcontactthereel(Figure
8).
Figure8
1.Bedbaradjustingscrew
2.Tipthemower,toexposethebedknifeandreel.
Important:Makesurenutsonbackendofbedbar
adjustingscrewsarenotrestingonthework
surface(Figure9).
g020158
Figure9
1.Cuttingunitkickstand
3.Rotatethereelsothatabladecrossesthebedknife
approximately25mm(1inch)infromtheendofthe
bedknifeontherighthandsideofthecuttingunit.
Puttinganidentifyingmarkonthisbladewillmake
subsequentadjustmentseasier.Insertthe0.05mm
(0.002inch)shimbetweenthemarkedreelbladeand
thebedknifeatthepointwherethebladecrossesthe
bedknife.
4.Turntherightbedbaradjusterclockwiseuntilyoufeel
lightpressure(i.e.drag)ontheshim,thenbackoffthe
bedbaradjustertwoclicksandremovetheshim.(Since
adjustingonesideofthecuttingunitaffectstheother
side,thetwoclickswillprovideclearanceforwhenthe
othersideisadjusted)
Note:Ifstartingwithalargegap,bothsidesshould
initiallybedrawncloserbyalternatelytighteningthe
rightandlefthandsides.
5.Slowlyrotatethereelsothatthesamebladethatyou
checkedontherightsideiscrossingthebedknife
approximately25mm(1inch)infromtheendofthe
bedknifeonthelefthandsideofthecuttingunit.
6.Turntheleftbedbaradjusterclockwiseuntiltheshim
canbeslidthroughthereeltobedknifegapwithlight
drag.
7.Returntotherightsideandadjustasnecessarytoget
lightdragontheshimbetweenthesamebladeand
bedknife.
8.Repeatsteps6and7untiltheshimcanbeslidthrough
bothgapswithslightdrag,butoneclickinonboth
8

sidespreventstheshimfrompassingthroughonboth
sides.Thebedknifeisnowparalleltothereel.
Note:Thisprocedureshouldnotbeneededondaily
adjustments,butshouldbedoneaftergrindingor
disassembly.
9.Fromthisposition(i.e.oneclickinandshimnot
passingthrough)turnthebedbaradjustersclockwise
twoclickseach.
Note:Eachclickturnedmovesthebedknife0.018
mm(0.0007inches).Donotovertightenthe
adjustingscrews.
10.Testthecuttingperformancebyinsertingalongstrip
ofcuttingperformancepaper(Toropartnumber
125-5610)betweenreelandbedknife,perpendicular
tothebedknife(Figure10).Slowlyrotatethereel
forward;itshouldcutthepaper.
Figure10
Note:Shouldexcessivereeldragbeevident,itwillbe
eithernecessarytobacklaporregrindthecuttingunit
toachievethesharpedgesneededforprecisioncutting.
AdjustingtheRearRoller
1.Adjusttherearrollerbrackets(Figure11)tothedesired
heightofcutrangebypositioningtherequiredamount
ofspacersbelowthesideplatemountingange(Figure
11)pertheHOCChart.
g020161
Figure11
1.Spacer3.Sideplatemountingange
2.Rollerbracket
2.Raiserearofcuttingunitandplaceablockunder
bedknife.
3.Remove(2)nutssecuringeachrollerbracketandspacer
toeachsideplatemountingange.
4.Lowerrollerandscrewsfromsideplatemounting
angesandspacers.
5.Placespacersontoscrewsonrollerbrackets.
6.Re-securerollerbracketandspacerstounderside
ofsideplatemountingangeswithnutspreviously
removed.
7.Verifythatbedknifetoreelcontactiscorrect.Tip
mowertoexposefrontandrearrollersandbedknife.
Note:Thepositionoftherearrollertothereel
iscontrolledbythemachiningtolerancesofthe
assembledcomponentsandparallelingisnotrequired.
Alimitedamountofadjustmentispossiblebysetting
thecuttingunitonasurfaceplateandlooseningthe
sideplatemountingcapscrews(Figure12).Adjustand
retightencapscrews.Torquethecapscrewsto37-45
N-m(27-33ft-lb).
g020162
Figure12
1.Sideplatemountingcapscrews
9

HeightofCutChartTerms
HeightofCutSetting(HOC)
ThedesiredHeightofCut.
BenchSetHeightofCut
Theheightatwhichthetopedgeofthebedknifeissetabove
aatlevelsurfacethatcontactsthebottomofboththefront
andrearroller.
EffectiveHeightofCut
Thisistheactualheightthegrasshasbeencut.Foragiven
benchsetheightofcut,theactualheightofcutwillvary
dependingonthetypeofgrass,timeofyear,turfandsoil
conditions.Thecuttingunitsetup(aggressivenessofcut,
rollers,bedknives,attachmentsinstalled,turfcompensation
settings,etc.)willalsoaffecttheeffectiveheightofcut.Check
theeffectiveheightofcutusingtheTurfEvaluator,Model
04399regularlytodeterminethedesiredbenchsetheight
ofcut.
AggressivenessofCut
CuttingunitAggressivenessofCuthasasignicantimpact
ontheperformanceofthecuttingunit.Aggressivenessof
Cutreferstotheangleofthebedkniferelativetotheground
(Figure13).
Figure13
1.Rearspacers3.Aggressivenessofcut
2.Sideplatemountingange
Thebestcuttingunitsetupisdependentonyourturf
conditionsanddesiredresults.Experiencewiththecutting
unitonyourturfwilldeterminethebestsettingtouse.
Aggressivenessofcutmaybeadjustedthroughoutthecutting
seasontoallowforvariousturfconditions.
Ingeneral,lesstonormalaggressivesettingsaremore
appropriateforwarmseasongrasses(Bermuda,Paspalum,
Zoysia)whilecoolseasongrasses(Bent,Bluegrass,Rye)may
requirenormaltomoreaggressivesetups.Moreaggressive
setupscutmoregrassoffbyallowingthespinningreeltopull
moregrassupintothebedknife.
RearSpacers
Thenumberofrearspacersdeterminestheaggressiveness
ofcutforthecuttingunit.Foragivenheightofcut,adding
spacers,belowthesideplatemountingange,increasesthe
aggressivenessofthecuttingunit.Allcuttingunitsona
givenmachinemustbesettothesameaggressivenessofcut
(Numberofrearspacers,partno.119–0626),otherwisethe
after-cutappearancecouldbenegativelyaffected(Figure13).
TurfCompensationSettings
Theturfcompensationspringtransferstheweightfromthe
fronttotherearroller.(Thishelpstoreduceawavepattern
intheturf,alsoknownasmarcellingorbobbing.)
Important:Makespringadjustmentswiththecutting
unitmountedtothetractionunit,pointingstraight
aheadandloweredtotheshopoor.
1.Makesurethehairpincotterisinstalledintherearhole
inthespringrod(Figure14).
g020164
Figure14
1.Turfcompensationspring3.Springrod
2.Hairpincotter4.Hexnuts
2.Tightenthehexnutsonthefrontendofthespringrod
untilthecompressedlengthofthespringis5inches
(12.7cm)(Figure14).
Note:Whenoperatingonroughterraindecreasethe
springlengthby1.3cm(1/2inch).Groundfollowing
willbeslightlydecreased.
Note:Theturfcompensationsettingwillneedtobe
resetiftheHOCsettingortheAggressivenessofCut
settingischanged.
10

ChainLinks
Thelocationatwhichtheliftarmchainisattacheddetermines
therearrollerpitchangle(Figure15).
Figure15
1.Liftchain3.Bottomhole
2.U-Bracket
11

Groomer
Thesearetherecommendedheightofcutsettingswhenagroomerkitisinstalledonthecuttingunit.
HeightofCutChart
HOCSettingAggressivenessofCutNo.ofRearSpacersNo.ofChainLinksWithGroomerkits
installed
0.64cm(0.250inches)Less
Normal
More
0
0
1
4
4
3
Y
Y
-
0.95cm(0.375inches)Less
Normal
More
0
1
2
4
3+
3+
Y
Y
-
1.27cm(0.500inches)Less
Normal
More
0
1
2
4
4
3+
Y
Y
Y
1.56cm(0.625inches)Less
Normal
More
1
2
3
4
4
3+
Y
Y
-
1.91cm(0.750inches)Less
Normal
More
2
3
4
4
3+
3+
Y
Y
-
2.22cm(0.875inches)Less
Normal
More
2
3
4
4
3
3
Y
Y
-
2.54cm(1.000inch)Less
Normal
More
3
4
5
4
3+
3+
Y
Y
-
2.86cm(1.125inches)*Less
Normal
More
4
5
6
4
3+
3
-
-
-
3.18cm(1.250inches)*Less
Normal
More
4
5
6
4
3+
3
-
-
-
3.49cm(1.375inches)*Less
Normal
More
4
5
6
4
4
3+
-
-
-
3.81cm(1.500inches)*Less
Normal
More
5
6
7
4
3+
3+
-
-
-
+IndicatestheU-bracket,onliftarm,ispositionedinthebottomhole(Figure15).
*HighHOCKit(PartNo.110-9600)mustbeinstalled.FrontHOCbracketmustbepositionedinthetopsideplatehole.
Note:Changingonechainlinkwillchangetherearrollerpitchanglemovementby7.0degrees.
Note:ChangingtheU-bracket,ontheliftarm,tothebottomholewilladd3.5degreestotherearrollerpitchangle
12

AdjustingtheHeightofCut
Note:Forheightsofcutgreaterthan2.54cm(1.000inch)
theHighHeightofCutKitmustbeinstalled.
1.Loosenlocknutssecuringheight-of-cutbracketsto
cuttingunitsideplates(Figure16).
g020166
Figure16
1.Adjustingscrew3.Height-of-cutbracket
2.Locknut
2.Loosennutongaugebar(Figure17)andsetadjusting
screwtodesiredheight-of-cut.Distancebetween
bottomofscrewheadandfaceofbarisheight-of-cut.
Figure17
1.Gaugebar4.Holesusedforsetting
GroomerHOG
2.Heightadjustingscrew5.Holenotused
3.Nut
3.Hookthescrewheadoncuttingedgeofbedknifeand
restrearendofbaronrearroller(Figure18).
4.Rotatetheadjustingscrewuntilthefrontrollercontacts
thegaugebar(Figure18).Adjustbothendsofroller
untilentirerollerisparalleltothebedknife.
Figure18
Important:Whensetproperly,therearandfront
rollerswillcontactthegaugebarandthescrew
willbesnugagainstthebedknife.Thisensures
thattheheight-of-cutisidenticalatbothendsof
thebedknife.
5.Tightennutstosecureadjustment.Donotovertighten
nut.Tightenenoughtoremoveplayfromwasher.
Usethefollowingcharttodeterminewhichbedknifeis
bestsuitedforthedesiredheightofcut.
13

Bedknife/HeightofCutChart
PremiumLowHOCBedknife
ReelSizePartNo.BedknifeLipHeightHeightofCut
18inch,11
blade(Production)
18inch,8blade(Optional)
125–2770
22inch,8blade(Optional)125–2771
5.6mm
(.220inch)
6.4–12.7mm
(.250-.500inch)
LowHOCBedknife
ReelSizePartNo.BedknifeLipHeightHeightofCut
18inch,8&11blade
(Optional)
121-3167
22inch,8blade(Optional)110-4084
5.6mm
(.220inch)
.6.4–12.7mm
(.250-.500inch))
EdgeMax®LowHOCBedknife
ReelSizePartNo.BedknifeLipHeightHeightofCut
18inch,11blade(Optional)
18inch,8blade(Optional)
130–4745
22inch,8blade(Optional)127–7132
5.6mm
(.220inch)
6.4–12.7mm
(.250-.500inch)
EdgeMax®Bedknife
ReelSizePartNo.BedknifeLipHeightHeightofCut
18inch,8blade(Production)
18inch,11blade(Optional)
121–3165
22inch,8blade(Production)108-9095
6.9mm
(.270inch)
9.5–38.1mm
(.375-1.50inches)
StandardBedknife
ReelSizePartNo.BedknifeLipHeightHeightofCut
18inch,8&11blade
(Optional)
121–3166
22inch,8blade(Optional)108-9096
6.9mm
(.270inch)
9.5–38.1mm
(.375-1.50inches)*
*WarmseasongrassesmayrequiretheLowHOC
bedknifefor12.7mm(.500inches)andbelow .
Figure19
1.BedknifeLipHeight*
CuttingUnitCharacteristics
Thedualknobbedknife-to-reeladjustmentsystem
incorporatedinthiscuttingunitsimpliestheadjustment
procedureneededtodeliveroptimummowingperformance.
Thepreciseadjustmentpossiblewiththedualknob/bedbar
designgivesthenecessarycontroltoprovideacontinual
self-sharpeningaction-thusmaintainingsharpcuttingedges,
ensuringgoodquality-of-cut,andgreatlyreducingtheneed
forroutinebacklapping.
DailyAdjustmentsofCuttingUnit
Priortomowingeachday,orasrequired,checkeachcutting
unittoverifyproperbedknife-to-reelcontact.Thismustbe
performedeventhoughthequalityofcutisacceptable.
1.Slowlyrotatethereelinareversedirection,listening
forreel-to-bedknifecontact.
Note:Theadjustmentknobshavedetents
correspondingto0.018mm(0.0007inch)bedknife
movementforeachindexedposition.Referto
AdjustingtheBedknifetotheReel.
2.Testthecuttingperformancebyinsertingalongstrip
ofcuttingperformancepaper(Toropartnumber
125-5610)betweenreelandbedknife,perpendicular
tothebedknife(Figure20).Slowlyrotatethereel
forward;itshouldcutthepaper.
14

Figure20
Note:Ifexcessivecontact/reeldragisevidentitwill
beeithernecessarytobacklap,refacethefrontofthe
bedknife,orregrindthecuttingunittoachievethe
sharpedgesneededforprecisioncutting(Refertothe
ToroManualforSharpeningReelandRotaryMowers,
FormNo.09168SL).
Important:Lightcontactispreferredatalltimes.
Ifyoudonotmaintainlightcontact,thebedknife
andreeledgeswillnotsufcientlyself-sharpen
andwilldullafteraperiodofoperation.Ifyou
maintainexcessivecontact,thebedknifeandreel
willwearquicker,wearunevenly,andthequality
ofcutmaybeadverselyaffected.
Note:Afterextendedrunning,aridgewilleventually
developatbothendsofthebedknife.Roundoffor
lethesenotchesushwiththecuttingedgeofthe
bedknifetoensuresmoothoperation.
Note:Overtime,thechamfer(Figure21)willneedto
beregroundasitisonlydesignedtolast40%ofthe
bedknifelife.
Figure21
Note:Donotmakethelead-inchamfertoolargeas
itmaycauseturftufting.
15

ServicingtheBedknife
Thebedknifeservicelimitsarelistedinthefollowingcharts.
Important:Operatingthecuttingunitwiththebedknifebelowthe“servicelimit”mayresultinpoorafter-cut
appearanceandreducethestructuralintegrityofthebedknifeforimpacts.
BedknifeServiceLimitChart
PremiumLowHOCBedknife
ReelSizePartNo.BedknifeLipHeightServiceLimit*GrindAngles
Top/FrontAngles
18inch,11blade(Production)
18inch,8blade(Optional)
125-2770
22inch,8blade(Optional)125-2771
5.6mm
(.220inch)
4.8mm
(.190inch)
10/5Degrees
LowHOCBedknife
ReelSizePartNo.BedknifeLipHeightServiceLimit*GrindAngles
Top/FrontAngles
18inch,8&11blade(Optional)121-3167
22inch,8blade(Optional)110-4084
5.6mm
(.220inch)
4.8mm
(.190inch)
5/5Degrees
EdgeMax®LowHOCBedknife
ReelSizePartNo.BedknifeLipHeightServiceLimit*GrindAngles
Top/FrontAngles
18inch,11blade(Optional)
18inch,8blade(Optional)
130–4745
22inch,8blade(Optional)127–7132
5.6mm
(.220inch)
4.8mm
(.190inch)
10/5Degrees
EdgeMax®Bedknife
ReelSizePartNo.BedknifeLipHeightServiceLimit*GrindAngles
Top/FrontAngles
18inch,8blade(Production)
18inch,11blade(Optional)
121–3165
22inch,8blade(Production)108-9095
6.9mm
(.270inch)
4.8mm
(.190inch)
5/5Degrees
StandardBedknife
ReelSizePartNo.BedknifeLipHeightServiceLimit*GrindAngles
Top/FrontAngles
18inch,8&11blade
(Optional)
121–3166
22inch,8blade(Optional)108-9096
6.9mm
(.270inch)
4.8mm
(.190inch)
5/5Degrees
16

RecommendedTopandFrontBedknifeGrindAngles
(Figure22).
g025579
2
3
Figure22
1.Bedknifeservicelimit*
2.Topgrindangle
3.Frontgrindangle
Note:Allbedknifeservicelimitmeasurementsreferencethe
bottomofthebedknife(Figure23)
Figure23
17

Maintenance
Lubrication
Eachcuttingunithas(4)greasettingsthatmustbelubricated
regularlywithNo.2GeneralPurposeLithiumBaseGrease.
Thelubricationpointsarethefrontroller(2)andtherear
roller(2).Also,afterevery250hoursorwheneverthereel
motorisremovedfromthecuttingunit,applygreasetothe
splineinsert(Figure24).
Note:Lubricatingcuttingunitsimmediatelyafter
washinghelpspurgewateroutofbearingsandincreases
bearinglife.
1.Wipeeachgreasettingwithacleanrag.
2.Greasethettingsandsplineinsert.
3.Wipeexcessgreaseaway.
g020156
Figure24
Greasettinglocationsshownforleftside
ServicingtheBedbar
RemovingtheBedbar
1.Turnbedbaradjusterscrewscounterclockwisetoback
thebedknifeawayfromreel(Figure25).
Figure25
1.Bedbaradjustingscrew3.Bedbar
2.Springtensionnut4.Washer
2.Backoutthespringtensionnut,untilthewasherisno
longertensionedagainstthebedbar(Figure25).
3.Oneachsideofthemachine,loosenthelocknut
securingthebedbarbolt(Figure26).
Figure26
1.Bedbarbolt2.Locknut
4.Removeeachbedbarboltallowingbedbartobepulled
downwardandremovedfrommachinebolt(Figure
26).Accountfor2nylonand1stampedsteelwashers
oneachendofbedbar(Figure27).
Figure27
1.Bedbarbolt3.Steelwasher
2.Nut4.Nylonwasher
AssemblingtheBedbar
1.Installbedbar,positioningmountingearsbetween
washerandbedbaradjuster.
2.Securebedbartoeachsideplatewithbedbarbolts
(nutsonbolts)and6washers.Anylonwasheristobe
positionedoneachsideofsideplateboss.Placeasteel
18

washeroutsideeachofthenylonwashers(Figure27).
Torquebedbarboltsto27-33(37-45N-m).Tighten
thelocknutsequally,oneachside,untiltheoutersteel
washerscannotberotatedbyhand.Then,loosenthe
locknutsuntiltheoutersteelwashersjustrotateby
hand,yetthebedbarendplayisremoved.
Note:Overtighteningthelocknutscandeecttheside
platesandbedbarwhichcanaffectthereel/bedknife
contact.
Note:Thewashersontheinsidemayhaveagap.
3.Tightenspringtensionnutuntilspringiscollapsed,
thenbackoff1/2turn(Figure28).
Note:Donotovertightenasdamagetothespring
mayoccur.
Figure28
1.Spring2.Springtensionnut
19

ServicingtheHDDualPoint
Adjusters(DPA)
1.Removeallparts(refertoInstallationInstructionsforHD
DPAKitModelNo.120–7230andtoFigure29).
2.ApplyNeverSeizetotheinsideofthebushingareaon
cuttingunitcenterframe(Figure29).
3.Alignthekeysonangebushingstotheslotsinthe
frameandinstallthebushings(Figure29).
4.Installawavewasherontotheadjustershaftandslide
theadjustershaftintotheangebushingsinthecutting
unitframe(Figure29).
5.Securetheadjustershaftwithaatwasherandlock
nut(Figure29).Torquethelocknutto15to20ft-lb
(20to27N-m).
Note:Thebedbaradjustershafthasleft-handthreads.
6.ApplyNeverSeizelubricanttothethreadsofthe
bedbaradjusterscrewthattintotheadjustershaft.
Threadbedbaradjusterscrewintotheadjustershaft.
7.Looselyinstallthehardenedwasher,springandspring
tensionnutontoadjusterscrew .
8.Installthebedbar,positioningthemountingears
betweenwasherandbedbaradjuster.
9.Securethebedbartoeachsideplatewiththebedbar
bolts(nutsonbolts)and6washers.Anylonwasheris
tobepositionedoneachsideofsideplateboss.Placea
steelwasheroutsideeachofthenylonwashers(Figure
29).Torquebedbarboltsto27-33ft.-lb(37-45N-m).
Tightenthelocknutsequally,oneachside,untilthe
outersteelwasherscannotberotatedbyhand.Then,
loosenthelocknutsuntiltheoutersteelwashersjust
rotatebyhand,yetthebedbarendplayisremoved
(Figure27).
10.Tightenthenutoneachbedbaradjusterassembly
untilthecompressionspringisfullycompressed,then
loosennut1/2turn(Figure28).
11.Repeattheprocedureontheotherendofthecutting
unit.
12.Adjustthebedknifetothereel.
1
2
3
4
5
6
7
8
9
10
11 G016355
Figure29
1.Shaftadjuster4.ApplyNeverSeizehere7.ApplyNeverSeizehere10.Compressionspring
2.Wavewasher5.Flatwasher8.Bedbaradjusterscrew11.Springtensionnut
3.Flangebushing6.Locknut9.Hardenedwasher
20