Operator's Manual

CheckingandAdjustingtheCutting
Unit
Thedual-knobbedknife-to-reeladjustmentsystem
incorporatedinthiscuttingunitsimpliestheadjustment
procedureneededtodeliveroptimummowingperformance.
Thepreciseadjustmentpossiblewiththedual-knob/bedbar
designgivesthenecessarycontroltoprovideacontinual
self-sharpeningaction—thusmaintainingsharpcuttingedges,
ensuringgoodqualityofcut,andgreatlyreducingtheneed
forroutinebacklapping.
Priortomowingeachday,orasrequired,eachcuttingunit
mustbecheckedtoverifyproperbedknife-to-reelcontact.
Thismustbeperformedregardlessofwhetherthe
qualityofcutisacceptable.
1.Lowerthecuttingunitsontoahardsurface,shutoff
theengine,andremovetheignitionkey.
2.Slowlyrotatethereelinareversedirection,listening
forreel-to-bedknifecontact.Ifnocontactisevident,
turnthebedknife-adjustingknobsclockwise,1clickat
atime,untilyoufeelandhearlightcontact.
Note:Thereelmustcut1sheetofpaper,when
insertedatarightangletothebedknife,atbothends
andthecenterofthereel.
Note:Theadjustmentknobshavedetents
correspondingto0.022mm(0.0009inch)bedknife
movementforeachindexedposition.
3.Ifexcessivecontact/reeldragisevident,eitherbacklap,
refacethefrontofthebedknife,orgrindthecutting
unittoachievethesharpedgesneededforprecision
cutting;refertotheToroManualforSharpeningReeland
RotaryMowers(FormNo.09168SL).
Important:Lightcontactispreferredatalltimes.
Iflightcontactisnotmaintained,thebedknife/reel
edgeswillnotsufcientlyself-sharpenanddull
cuttingedgeswillresultafteraperiodofoperation.
Ifexcessivecontactismaintained,bedknife/reel
wearwillbeaccelerated,unevenwearcanresult,
andqualityofcutmaybeadverselyaffected.
Note:Asthereelbladescontinuetorunagainstthe
bedknife,aslightburrwillappearonthefrontcutting
edgesurfacealongthefulllengthofthebedknife.Ifa
leisoccasionallyrunacrossthefrontedgetoremove
thisburr,improvedcuttingcanbeobtained.
Afterextendedrunning,aridgewilleventuallydevelop
atbothendsofthebedknife.Thesenotchesmustbe
roundedofforledushwiththecuttingedgeofthe
bedknifetoensuresmoothoperation.
Note:Overtime,thechamfer(Figure22)willneed
tobegroundasitisonlydesignedtolast40%ofthe
bedknifelife.
g031270
Figure22
1.Lead-inchamferonright
endofbedknife
3.1.5mm(0.060inch)
2.6mm(0.25inch)
Note:Donotmakethelead-inchamfertoolarge,as
itmaycauseturftufting.
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