Toro 74310 - Replacing the Pump Drive Belt; Adjusting the Belt Guides

13.Loosenthejamnutsandadjustthelinkageuntilthe
topoftheidlerarmisalignedwiththebottomofthe
notchonthetensionarmasshowninFigure52.
Figure52
1.TensionArm
2.Loosenjamnuts
3.WhenPTOisengaged,aligntopofidlerarmwithbottomof
notchontensionarm,asshown.
4.IdlerArm
14.TightenthejamnutsanddisengagethePTOlever.
15.EngagePTOleverandcheckthealignment.
16.CheckandadjustthebeltguidesasstatedinAdjusting
theBeltGuides(page43).
ReplacingthePumpDriveBelt
1.Stopthemachineandmovethespeedcontrolleverto
theneutralposition.
2.DisengagethePTO,engagetheparkingbrake,stopthe
engine,andwaitforallmovingpartstostop.
3.RemovethePTOBelts;refertoReplacingthePTO
Belts(page42).
4.Pullspringidlerorremovespringtorelievepumpdrive
belttension.
5.Removetheoldbelt.
6.Routenewbeltontosheavesasshowninthedecal
locatedonthebackoftheleftdriveshield(Figure53).
Figure53
1.PumpDriveBelt4.Pump
2.Pump5.Idler
3.Idler6.Engine
7.InstallPTOBeltsasstatedinReplacingthePTOBelts
(page42).
AdjustingtheBeltGuides
1.Stopthemachineandmovethespeedcontrolleverto
theneutralposition.
2.DisengagethePTO,engagetheparkingbrake,stopthe
engine,andwaitforallmovingpartstostop.
3.Withtheengineoff,engagethePTOlever.
4.AdjustbeltguidesasshowninFigure54.
Figure54
1.3mm(1/8inch)4.Rotatewireformguideto
centerbeltsinguide.
2.11mm(7/16inch)5.6mm(1/4inch)
3.3mm(1/8inch)Clearance6.8mm(5/16inch)
43