Toro Groundsmaster 4300-D - Blade Maintenance; Blade Safety and Plane; Adjusting Blade Plane

BladeMaintenance
BladeSafety
•Inspectthebladeperiodicallyforwearordamage.
•Usecarewhencheckingtheblades.Wrapthe
bladesorweargloves,andusecautionwhen
servicingtheblades.Onlyreplaceorsharpenthe
blades;neverstraightenorweldthem.
•Onmulti-bladedmachines,takecareasrotating1
bladecancauseotherbladestorotate.
ServicingtheBladePlane
Therotarydeckcomesfromthefactorypresetat5
cm(2inches)heightofcutandbladerakeof7.9mm
(0.310inch).Theleftandrightheightsarealsopreset
towithin±0.7mm(0.030inch)oftheother.
Thecuttingdeckisdesignedtowithstandblade
impactswithoutdeformationofthechamber.Ifasolid
objectisstruck,inspectthebladefordamageandthe
bladeplaneforaccuracy.
InspectingtheBladePlane
1.Removethehydraulicmotorfromthecutting
deckandremovethecuttingdeckfromthe
tractor.
2.Useahoist(orminimumof2people)andplace
thecuttingdeckonaattable.
3.Mark1endofthebladewithapaintpenor
marker.Usethisendofthebladetocheckall
heights.
4.Positionthecuttingedgeofthemarkedendof
thebladeat12o’clock(straightaheadinthe
directionofmowing)(Figure100)andmeasure
heightfromtabletocuttingedgeofblade.
g011353
Figure100
5.Rotatethemarkedendofthebladetothe3and
9o’clockpositions(Figure100)andmeasure
theheights.
6.Comparethe12o’clockmeasuredheighttothe
height-of-cutsetting.Itshouldbewithin0.7mm
(0.030inch).The3and9o’clockheightsshould
be1.6to6.0mm(0.06to0.24inch)higherthan
the12o’clocksettingandwithin1.6to6.0mm
(0.06to0.24inch)ofeachother.
Note:Ifanyofthesemeasurementsarenotwithin
specication,proceedtoAdjustingtheBladePlane
(page71).
AdjustingtheBladePlane
Startwiththefrontadjustment(change1bracketata
time).
1.Removetheheight-of-cutbracket(front,left,or
right)fromthedeckframe(Figure101).
2.Adjust1.5mm(0.060inch)shimsand/or0.7mm
(0.030inch)shimbetweenthedeckframeand
brackettoachievethedesiredheightsetting
(Figure101).
g031692
Figure101
1.Height-of-cutbracket2.Shims
3.Installtheheight-of-cutbrackettothedeck
framewiththeremainingshimsassembled
belowtheheight-of-cutbracket.
4.Securethesocket-headbolt/spacerandange
nut.
Note:Socket-headbolt/spacerareheld
togetherwiththread-lockingadhesivetoprevent
thespacerfromfallinginsidethedeckframe.
5.Verifythe12o’clockheightandadjustifneeded.
6.Determineifonly1orboth(rightandleft)
height-of-cutbracketsneedtobeadjusted.If
the3or9o’clocksideis1.6to6.0mm(0.06to
0.24inch)higherthanthenewfrontheightthen
noadjustmentisneededforthatside.Adjustthe
71