Toro Groundsmaster 5900 - Pivoting (Tilting) the Front Cutting-Unit Down; Adjusting the Cutting-Unit Pitch; Measuring the Cutting-Unit Pitch; Adjusting the Front Cutting-Unit Pitch

Pivoting(Tilting)theFront
Cutting-UnitDown
1.Withthehelpofanotherpersonholdingthefront
ofthecuttingunit,removetheblockofwood.
2.Sitontheseat,starttheengine,andlowerthe
cuttingunituntilitisslightlyofftheoor.
3.Securetheheight-of-cutchainstotherearof
thecuttingunit.
4.Connectthedamperassemblyandsecureit
withtheretainerclip.
AdjustingtheCutting-Unit
Pitch
MeasuringtheCutting-UnitPitch
Themower-deckpitchisthedifferencebetweenthe
heightofcutfromthefronttipofthebladetotheback
tip.Setabladepitchof6.3to9.7mm(0.25to0.38
inch);i.e.,thebacktipofthebladeshouldbe7.5mm
(0.3inch)higherthanthefronttip.
1.Parkthemachineonalevelsurface,engagethe
parkingbrake,lowerthecuttingdeck,shutoff
theengine,andremovethekey.
2.Setthecuttingunittothedesiredheightofcut.
3.Ensurethatthewingletsareleveltothefront
deckandthefrontdeckislevelsidetoside.
AdjustingtheFrontCutting-Unit
Pitch
1.Rotateeachbladesothattheypointstraight
forward(Figure136).
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Figure136
1.Use1ofthesebladesfor
measuringthefront-blade
height.
2.Use1ofthesebladesfor
measuringtherear-blade
height.
2.Usingashortruler,measurefromtheoorto
thefronttipofthefrontbladeandrecordthis
dimension.
3.Measurefromtheoortothebacktipofthe
wingletbladeandrecordthisdimension.
4.Subtractthefrontdimensionfromtherear
dimensiontocalculatethepitchofeachblade.
5.Loosenthejamnutsonthetoporbottomofthe
height-of-cutchainU-bolt(Figure137).
Note:Loosenortightentheheight-of-cutchain
nutsequally,sothatthedeckremainslevelfrom
sidetoside.
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Figure137
1.Height-of-cutchain3.Nut(2)
2.U-bolt
6.Adjusttheothersetofnutstoraiseorlowerthe
rearofthecuttingunitandattainthecorrect
mower-deckpitchbasedontheaveragepitch
ofeachblade.
7.Tightenthejamnuts.
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