Toro Groundsmaster 4100-D 30411 - Mower Maintenance; Pivoting the Front Cutting Unit; Adjusting the Cutting Unit Pitch

MowerMaintenance
Pivoting(Tilting)theFront
CuttingUnitUpright
Note:Althoughnotneededfornormalmaintenance
procedures,thefrontcuttingunitcanbepivoted(tilted)
toanuprightposition.Shouldyoudesiretotiltthe
cuttingunit,proceedasfollows:
1.Raisethecenterandwingcuttingunitsslightlyoffof
theoor,settheparkingbrake,andstoptheengine.
Removetheignitionkey.
2.Removethehairpincottersecuringdamperstolift
arms(Figure79).Pivotdampertowarddeckhousing.
Figure79
1.Damper2.Hairpincotter
3.Removethehairpincotterandclevispinsecuring
theheight-of-cutchainstotherearofthecutting
unit(Figure80).
Figure80
1.Height-of-cutchain
4.Starttheengineandslowlyraisethecentercutting
unit.
5.Slowlyraiseeachwingcuttinguntilthecenterof
gravityshiftsandthedeckstartstorotateintothe
uprightposition.Stoptheengineandremovethe
ignitionkey.
PivotingtheFrontCuttingUnit
Down
1.Slowlylowerwingcuttingunitsuntilthecenterof
gravityshiftsandthecentercuttingunitrotates
downward.
2.Sitontheseat,starttheengine,andlowerthecenter
cuttingunituntilitisslightlyoffoftheoor.
3.Securetheheight-of-cutchainstotherearofthe
cuttingunit.
4.Pivotdampersupwardintopositionandsecurewith
clevispinandcotterpin.
AdjustingtheCuttingUnit
Pitch
MeasuringtheCuttingUnitPitch
Cuttingunitpitchisthedifferenceinheight-of-cutfrom
thefrontofthebladeplanetothebackoftheblade
plane.Tororecommendsabladepitchof1/4inch(6
mm).Thatisthebackofthebladeplaneis1/4inch(6
mm)higherthanthefront.
1.Positionthemachineonalevelsurfaceontheshop
oor.
2.Setthecuttingunittothedesiredheight-of-cut.
3.Rotate1bladesothatitpointsstraightforward.
4.Usingashortruler,measurefromtheoortothe
fronttipoftheblade.Rotatethebladetiptotherear
andmeasurefromtheoortothetipoftheblade.
5.Subtractthefrontdimensionfromtherear
dimensiontocalculatethebladepitch.
AdjustingtheFrontCuttingUnit
1.Loosenthejamnutsonthetoporbottomofthe
height-of-cutchainU-bolt(Figure81).
2.Adjusttheothersetofnutstoraiseorlowertherear
ofthecuttingunitandattainthecorrectcuttingunit
pitch.
3.Tightenthejamnuts.
52