Toro 74924 TITAN ZX5420 - Mower Blade Sharpening and Balancing; Warning: Blade Sharpening Safety Precautions; Mower Blade Removal Process; Mower Blade Installation Process

WARNING
Abladethatisbentordamagedcouldbreak
apartandcouldseriouslyinjureorkillyouor
bystanders.
•Alwaysreplacebentordamagedblade
withanewblade.
•Neverleorcreatesharpnotchesinthe
edgesorsurfacesofblade.
A.IfthedifferencebetweenAandBisgreater
than1/8inch(3mm)replacethebladewitha
newblade.RefertoRemovingtheBladesand
InstallingtheBlades.
Note:Ifabentbladeisreplacedwithanewone
andthedimensionobtainedcontinuestoexceed
1/8inch(3mm),thebladespindlecouldbebent.
ContactanAuthorizedToroDealerforservice.
B.Ifthevarianceiswithinconstraints,movetothe
nextblade.
Repeatthisprocedureoneachblade.
RemovingtheBlades
Bladesmustbereplacedifasolidobjectishit,ifthebladeis
outofbalanceorisbent.Toensureoptimumperformance
andcontinuedsafetyconformanceofthemachine,use
genuineTororeplacementblades.Replacementbladesmade
byothermanufacturersmayresultinnon-conformancewith
safetystandards.
Holdthebladeendusingaragorthickly-paddedglove.
Removethebladebolt,curvedwasher,andbladefromthe
spindleshaft(
Figure66).
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2
3
4
G010341
Figure66
1.SailAreaofBlade3.Curvedwasher
2.Blade4.BladeBolt
SharpeningtheBlades
WARNING
Whensharpeningblade,piecesofbladecouldbe
thrownandcauseseriousinjury.
Wearpropereyeprotectionwhensharpeningblade.
1.Usealetosharpenthecuttingedgeatbothendsof
theblade(Figure67).Maintaintheoriginalangle.The
bladeretainsitsbalanceifthesameamountofmaterial
isremovedfrombothcuttingedges.
Figure67
1.Sharpenatoriginalangle
2.Checkthebalanceofthebladebyputtingitonablade
balancer(Figure68).Ifthebladestaysinahorizontal
position,thebladeisbalancedandcanbeused.Ifthe
bladeisnotbalanced,lesomemetalofftheendof
thesailareaonly(Figure66).Repeatthisprocedure
untilthebladeisbalanced.
Figure68
1.Blade2.Balancer
InstallingtheBlades
1.Installthebladeontothespindleshaft(Figure66).
Important:Thecurvedpartoftheblademustbe
pointingupwardtowardtheinsideofthemowerto
ensurepropercutting.
2.Installthespringdiskandbladebolt.Thespringdisk
conemustbeinstalledtowardthebolthead(Figure66).
Torquethebladeboltto100-110ft-lb(135-150N-m).
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