Toro 30447N - Adjusting the Blade

AdjustingtheCuttingUnitRollers
Thecuttingunitrollersshouldbemountedinthelower
positionwhenoperatinginheightofcutsgreaterthan2-1/2
inches(64mm)andinthehigherpositionwhenoperatingin
heightofcutslowerthan2-1/2inches(64mm).
1.Removetheboltandnutsecuringthegagewheelto
thecuttingunitbrackets(Figure25).
Figure25
1.Gagewheel
2.Aligntherollerandspacerwiththetopholesinthe
bracketsandsecurethemwiththeboltandnut.
AdjustingtheBlade
Toensureproperoperationofthecuttingunit,theremustbe
0.38-0.62inch(10-16mm)clearancebetweenthetipsofthe
wingandcentercuttingunitblades(Figure26).
1.Raisecuttingunitsobladesarevisibleandblockcenter
decksectionsoitcannotfallaccidentally.Wingdecks
mustbehorizontaltocentercuttingunit.
2.Rotateacenterandadjoiningwingbladesothereblade
tipsarealigned.Measuredistancebetweenbladetips,
distanceshouldbeapproximately0.38-0.62inch(10-16
mm)(
Figure26).
Figure26
3.Toadjustdistance,locateadjusterboltonrearpivot
linkofcuttingunit(
Figure27).Loosenjamnuton
adjusterbolt.Loosenortightenadjusterboltsuntil
0.38-0.62inch(10-16mm)clearanceisattained,then
tightenjamnut.
4.Repeatprocedureonoppositesideofcuttingdeck.
Figure27
1.Adjusterbolt2.Jamnut
CorrectingMismatchBetweenCutting
Units
Duetodifferencesingrassconditionsandthecounterbalance
settingofthetractionunit,itisadvisedthatasampleareaof
grassbecutandappearancecheckedbeforeformalcutting
isstarted.
1.Setallcuttingunitstothedesiredheightofcut;referto
AdjustingtheHeightofCut.
2.Checkandadjustfrontandreartractortirepressureto
25-30psi(172-207kPa).
3.Checkandadjustallcastortirepressuresto50psi(345
kPa).
4.Checkchargeandcounterbalancepressureswith
engineathighidleusingtestportsdenedinHydraulic
SystemsTestPorts.Adjustcounterbalancesettingtobe
230psi(1585kPa)higherthanchargepressurereading.
5.Checkforbentblades;refertoCheckingforaBent
Blade.
6.Cutgrassinatestareatodetermineifallcuttingunits
arecuttingatthesameheight.
7.Ifcuttingunitadjustmentsarestillneeded,ndaat
surfaceusinga6foot(2m)orlongerstraightedge.
8.Toeasemeasuringbladeplane,raisetheheightofcut
tothehighestposition;refertoAdjustingtheHeight
ofCut.
9.Lowercuttingunitsontotheatsurface.Removethe
coversfromthetopofthecuttingunits.
10.Loosentheangenut,securingtheidlerpulley,to
releasethebelttensiononeachcuttingunit.
CenterCuttingUnitSetup
Rotatebladeoneachspindleuntiltheendsfaceforwardand
backward.Measurefromtheoortothefronttipofthe
cuttingedge.Adjust1/8inchshimsonfrontcastorfork(s)to
matchheightofcuttodecal(Figure28);refertoAdjusting
theCuttingUnitPitch.
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