Toro 74410 - Replacing Pump Drive Belt

Figure50
1.Ratchetwithshort
extensionorbreaker
bar
2.Squarehole
8.Toincreasethebelttension,rotatetheratchetor
breakerbarcounterclockwisetomovethexed
idlerarmuntilyoufeelincreasedresistanceandthe
spring-loadedidlerpulleystopsmoving.
Note:Donotincreasethebelttensionbeyondthe
pointwherethexedidlerarmstops.
9.Whileholdingthebeltintension,tightenthe2bolts
thatsecurethexedidlerarm.
10.Removetheratchetorbreakerbarfromthesquare
holeinthexedidlerarm.
11.Installthebeltcoversovertheoutsidespindles.
ReplacingthePumpDriveBelt
ServiceInterval:Every50hours
Checkthepumpdrivebeltforwearafterevery50
operatinghours.
1.Removethemowerbeltrst;refertoReplacingthe
MowerBelt.
2.Removetheboltfromtheclutchstopandunplug
theclutchelectricalwire(Figure51).
3.Pullthespringloadedidlertotheside.
4.Removethetractionbeltfromtheengineandthe
hydraulicpumppulleys(Figure51).
5.Installthenewbeltaroundtheengineandthe
hydraulicpumppulleys(Figure51).
6.Pullthespring-loadedidlertothesideandalignthe
belt.
7.Releasethepressureonthespringloadedidler
(Figure51).
8.Installthemowerbelt.
Figure51
1.Belt4.Bolt
2.Clutchelectricalwire5.Clutch
3.Clutchstop
6.Idler
AdjustingthePushArms
Ifneeded,adjustthepusharmstoincreaseordecrease
themowerbelttension.
1.Loosenthejamnutandrotatetheballjoint
counterclockwise,oneturnatatime(Figure52).
Figure52
1.Pusharm3.Jamnut
2.13-1/2inch(343mm)
nominalat15degreetwist
4.Balljoint
2.Adjusteachsidethesameamount.Eachpusharm
shouldhaveanominallengthof13-1/2inch(34cm)
ata15degreetwist(Figure52).
Note:Increasethetensionbylengtheningthepush
arms;decreasethetensionbyshorteningthepush
arms.
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