Toro 74449 - Servicing the Cutting Blades

2.Checkthedistancebetweenthetwolargewashers,
itneedstobe11-1/8inches(28.2cm)for52inch
mowerdecksand10-1/2inches(26.7cm)for60
inchmowerdecks(Figure58).
3.Adjustthisdistance,bylooseningthespringjam
nutandturningthenutinfrontofeachspring
(Figure58).
Note:Turningthenutclockwisewillshortenthe
spring;counter-clockwisewilllengthenthespring.
4.Lockthenutintopositionbytighteningthespring
jamnut(Figure58).
Figure58
1.10-1/2inch(26.7cm)for
60inmowerdecksand
11.125inch(28.2cm)for
52inmowerdecks
5.Swiveljamnut
2.Frontnut
6.Liftnut
3.Springjamnut
7.Frontsupportarm
4.Frontswivel8.Largewasher
ServicingtheCuttingBlades
Maintainsharpbladesthroughoutthecuttingseason
becausesharpbladescutcleanlywithouttearingor
shreddingthegrassblades.Tearingandshreddingturns
grassbrownattheedges,whichslowsgrowthand
increasesthechanceofdisease.
Checkthecutterbladesdailyforsharpness,andforany
wearordamage.Filedownanynicksandsharpenthe
bladesasnecessary.Ifabladeisdamagedorworn,
replaceitimmediatelywithagenuineTororeplacement
blade.Forconvenientsharpeningandreplacement,you
maywanttokeepextrabladesonhand.
Awornordamagedbladecanbreak,anda
pieceofthebladecouldbethrownintothe
operator’sorbystander’sarea,resultingin
seriouspersonalinjuryordeath.
•Inspectthebladeperiodicallyforwearor
damage.
•Replaceawornordamagedblade.
Inspectandcheckthebladesevery8hours.
BeforeInspectingorServicingthe
Blades
Parkthemachineonalevelsurface,disengagetheblade
control(PTO),andsettheparkingbrake.Turnthe
ignitionkeytoOff.Removethekey.
InspectingtheBlades
ServiceInterval:Beforeeachuseordaily
1.Inspectthecuttingedges(Figure59).Iftheedges
arenotsharporhavenicks,removeandsharpenthe
blades.RefertoSharpeningtheBlades.
2.Inspecttheblades,especiallythecurvedarea
(Figure59).Ifyounoticeanydamage,wear,oraslot
forminginthisarea(Figure59),immediatelyinstalla
newblade.
Figure59
1.CuttingEdge3.Wear/slotForming
2.CurvedArea4.Crack
CheckingforBentBlades
1.DisengagethePTO,movethemotioncontrollevers
totheneutrallockedpositionandsettheparking
brake.
2.Stoptheengine,removethekey,andwaitforall
movingpartstostopbeforeleavingtheoperating
position.
3.Rotatethebladesuntiltheendsfaceforwardand
backward(Figure60).Measurefromalevelsurface
45