Toro 30686 - Adjusting the Mower Belt Tension

Note:Thepropermowerbelttensionis10-15lbf.
(44-67N)withthebeltdeected1/2inch(13mm)
halfwaybetweenthepulleys(Figure38).
Figure38
1.Mowerbeltwith1/2inch
(13mm)deection
2.Idlerpulley
AdjustingtheMowerBelt
Tension
AdjustingtheTension
ServiceInterval:Aftertherst8hours
Aftertherst25hours
Every50hours
Adjustthemowerbelttensionasfollows:
•Aftertherst8operatinghours.
•Aftertherst25operatinghours.
•Afterevery50operatinghours.
Checkthebelttensionaftertherst8operatinghours
and25operatinghoursthereafter.Checkthebelt
tensionafterevery50operatinghours.
Important:Thebeltmustbetightenoughtonot
slipduringheavyloadswhilecuttinggrass.Over
tensioningthebeltwillreducethespindlebearing
life,thebeltlifeandtheidlerpulleylife.
Important:Thebrakeneedstobeadjustedwhen
thebelttensionorthebrakelinkageisadjusted.
1.Disengagethebladecontrol(PTO)leverandsetthe
parkingbrakes.
2.Stoptheengineandwaitforallmovingpartstostop
beforeleavingtheoperatingposition.
3.Loosenthelocknutontheturnbuckle(Figure39).
4.Rotatetheturnbuckletowardtherearofthe
mowertoincreasethetensiononthebelt.Rotate
theturnbuckletowardthefrontofthemowerto
decreasethetensiononthebelt(Figure39).
Note:Theeyeboltthreadsonbothendsofthe
turnbuckleshouldbeengagedaminimumof
5/16inch(8mm).
Figure39
1.1/2inch(13mm)deection
here
4.Locknut
2.Assistarm5.Turnbuckle
3.Frontstop
5.Engagethebladedcontrollever(PTO)andcheck
thebelttension.
6.Ifthereisnoadjustmentleftintheturnbuckleand
thebeltisstillloose,therearidlerpulleyneedstobe
positionedtothemiddleorfronthole(Figure40).
Usetheholethatwillgivethecorrectadjustment.
7.Whentheidlerpulleyismovedthebeltguidemust
bemoved.Movethebeltguidetothefrontposition
(Figure40).
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