Operator's Manual

Figure18
1.BedknifeLipHeight
AdjustingtheTurfCompensation
Settings
Theturfcompensationspringtransferstheweightfromthe
fronttotherearroller.(Thishelpstoreduceawavepattern
intheturf,alsoknownasmarcellingorbobbing.)
Important:Makespringadjustmentswiththecutting
unitmountedtothetractionunit,pointingstraight
aheadandloweredtotheshopoor.
1.Makesurethatthehairpincotterisinstalledintherear
holeinthespringrod(Figure19).
Figure19
1.Turfcompensationspring3.Springrod
2.Hairpincotter4.Hexnuts
2.Tightenthehexnutsonthefrontendofthespringrod
untilthecompressedlengthofthespringis15.9cm
(6.25inches)(Figure19).
Note:Whenoperatingthemachineonroughterrain,
decreasethespringlengthby12.7mm(1/2inch).
Note:Theturfcompensationsettingwillneedtobe
resetiftheHOCsettingortheaggressiveness-of-cut
settingischanged.
CheckingandAdjustingtheCutting
Unit
Thedualknobbedknife-to-reeladjustmentsystem
incorporatedinthiscuttingunitsimpliestheadjustment
procedureneededtodeliveroptimummowingperformance.
Thepreciseadjustmentpossiblewiththedualknob/bedbar
designgivesthenecessarycontroltoprovideacontinual
self-sharpeningaction-thusmaintainingsharpcuttingedges,
ensuringgoodquality-of-cut,andgreatlyreducingtheneed
forroutinebacklapping.
Priortomowingeachday,orasrequired,eachcuttingunit
mustbecheckedtoverifyproperbedknife-to-reelcontact.
Thismustbeperformedeventhoughqualityofcutis
acceptable.
1.Lowerthecuttingunitsontoahardsurface,shutoff
theengine,andremovetheignitionkey.
2.Slowlyrotatethereelinareversedirection,listening
forreel-to-bedknifecontact.
Ifnocontactisevident,turnthebedknifeadjustingknobs
clockwise,oneclickatatime,untillightcontactisfeltand
heard.
Thereelmustcutonesheetofpaper,wheninsertedataright
angletothebedknife,atbothendsandatthecenterofthe
reel;refertostep12andFigure10in(page)
Theadjustmentknobshavedetentescorrespondingto0.022
mm(0.0009inch)bedknifemovementforeachindexed
position.
Ifexcessivecontact/reeldragisevidentitwillbeeither
necessarytobacklap,refacethefrontofthebedknife,or
regrindthecuttingunittoachievethesharpedgesneededfor
precisioncutting(RefertotheToroManualforSharpening
ReelandRotaryMowers).
Lightcontactispreferredatalltimes.Iflightcontactisnot
maintained,thebedknife/reeledgeswillnotsufciently
self-sharpenanddullcuttingedgeswillresultafteraperiodof
operation.Ifexcessivecontactismaintained,bedknife/reel
wearwillbeaccelerated,unevenwearcanresult,andquality
ofcutmaybeadverselyaffected.
Asthereelbladescontinuetorunagainstthebedknife,a
slightburrwillappearonthefrontcuttingedgesurfacealong
thefulllengthofthebedknife.Youcanremoveburrsand
improvecuttingbyoccasionallyrunningaleacrossthefront
edge.
Afterextendedrunning,aridgewilleventuallydevelopat
bothendsofthebedknife.Thesenotchesmustberounded
offorledushwiththecuttingedgeofthebedknifeto
ensuresmoothoperation.
Overtime,thechamfer(Figure20)willneedtobereground
asitisonlydesignedtolast40%ofthebedknifelife.
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