Toro 38682 - Adjusting the Mower Belt Tension

Note:Thepropermowerbelttensionis10-15lbf.
(44-67N)withthebeltdeected1/2inch(13mm)
halfwaybetweenthepulleys(Figure32).
Figure32
1.Mowerbeltwith1/2inch
(13mm)deection
2.Idlerpulley
8.Engagethebladecontrol(PTO)lever.
9.Checktheclearancebetweenthebellcrankandthe
transmissionoutputshaft(Figure33).
Figure33
1.1/16-1/8inch(2-3mm)
4.Hairpincotter
2.Bellcrank
5.Clevispin
3.Transmissionoutputshaft6.Clevis
Note:Theclearanceshouldbe1/16—1/8inch
(2-3mm).
10.Removethehairpincotterandtheclevispinfrom
thebellcrank.
11.Rotatetheclevisclockwiseontherodtoincrease
theclearance;rotateitcounterclockwisetodecrease
it(Figure33).
12.Disengagethebladecontrol(PTO)lever.
Note:Iftheassistarmdoesnotcontactthefront
stoponthemowerdeck(Figure34),adjusttheclevis
tobringthebellcrankclosertothetransmission
outputshaft(Figure33).
Figure34
1.1/2inch(13mm)deection
here
4.Locknut
2.Assistarm5.Turnbuckle
3.Frontstop
13.Checkthebeltguideundertheengineframeforthe
properadjustment(Figure31).
Note:Thedistancebetweenthebeltguideandthe
mowerbeltshouldbe1-1/4inch(32mm)when
youengagethemowerbelt.Adjustthemowerbelt
asnecessary.Thedisengagedbeltshouldnotdrag
orfalloffthepulleywhentheguidesareproperly
adjusted.
AdjustingtheMowerBelt
Tension
Adjustthemowerbelttensionasfollows:
•Aftertherst8operatinghours.
•Aftertherst25operatinghours.
•Afterevery50operatinghours.
Checkthebelttensionaftertherst8operatinghours
and25operatinghoursthereafter.Checkthebelt
tensionafterevery50operatinghours.
Important:Thebeltmustbetightenoughtonot
slipduringheavyloadswhilecuttinggrass.Over
tensioningthebeltwillreducethebearinglifeof
thebeltandthespindle.
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