Operator's Manual

Height-of-CutChartTerms
HeightofCutSetting(HOC)
ThedesiredHeightofCut
BenchSetHeightofCut
Theheightatwhichthetopedgeofthebedknifeissetabove
aatlevelsurfacethatcontactsthebottomofboththefront
andrearroller.
EffectiveHeightofCut
Thisistheactualheightthegrasshasbeencut.Foragiven
benchsetheightofcut,theactualheightofcutwillvary
dependingonthetypeofgrass,timeofyear,turfandsoil
conditions.Thecuttingunitsetup(aggressivenessofcut,
rollers,bedknives,attachmentsinstalled,turfcompensation
settings,etc.)willalsoaffecttheeffectiveheightofcut.Check
theeffectiveheightofcutusingtheTurfEvaluator,Model
04399regularlytodeterminethedesiredbenchsetheight
ofcut.
AggressivenessofCut
CuttingunitAggressivenessofCuthasasignicantimpact
ontheperformanceofthecuttingunit.Aggressivenessof
Cutreferstotheangleofthebedkniferelativetotheground
(Figure16).
Thebestcuttingunitsetupisdependentonyourturf
conditionsanddesiredresults.Experiencewiththecutting
unitonyourturfwilldeterminethebestsettingtouse.
Aggressivenessofcutmaybeadjustedthroughoutthecutting
seasontoallowforvariousturfconditions.
Ingeneral,lesstonormalaggressivesettingsaremore
appropriateforwarmseasongrasses(Bermuda,Paspalum,
Zoysia)whilecoolseasongrasses(Bent,Bluegrass,Rye)may
requirenormaltomoreaggressivesetups.Moreaggressive
setupscutmoregrassoffbyallowingthespinningreeltopull
moregrassupintothebedknife.
Figure16
1.Rearspacers
3.Aggressivenessofcut
2.Sideplatemountingange
RearSpacers
Thenumberofrearspacersdeterminestheaggressiveness
ofcutforthecuttingunit.Foragivenheightofcut,adding
spacers,belowthesideplatemountingange,increasesthe
aggressivenessofthecuttingunit.Allcuttingunitsona
givenmachinemustbesettothesameaggressivenessofcut
(Numberofrearspacers,partno.106-3925),otherwisethe
after-cutappearancecouldbenegativelyaffected(Figure16).
TurfCompensationSettings
Theturfcompensationspringtransferstheweightfromthe
fronttotherearroller.(Thishelpstoreduceawavepattern
intheturf,alsoknownasmarcellingorbobbing.)
Important:Makespringadjustmentswiththecutting
unitmountedtothetractionunit,pointingstraight
aheadandloweredtotheshopoor.
1.Makesurethehairpincotterisinstalledintherearhole
inthespringrod(Figure17).
Note:Whenservicingthecuttingunit,movethe
hairpincottertothespringrodholenexttotheturf
compensationspring.
Figure17
1.Turfcompensationspring3.Springrod
2.Hairpincotter4.Hexnuts
2.Tightenthehexnutsonthefrontendofthespringrod
untilthecompressedlengthofthespringis15.9cm
(6.25inches)(Figure17).
Note:Whenoperatingonroughterraindecreasethespring
lengthby1.27cm(1/2inch).Groundfollowingwillbe
slightlydecreased.
Note:Theturfcompensationsettingwillneedtobereset
iftheHOCsettingortheAggressivenessofCutsettingis
changed.
Note:Ifthecuttingunitmustberemovedfromthemachine,
movethehairpincottertothefrontholeinthespringrod
(Figure17).Makesuretomovethehairpincotterbacktothe
rearholeinthespringrodafterthecuttingunitisreinstalled
tothemachine.
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