Operator's Manual

Cutting-UnitSystem
Maintenance
BacklappingtheCutting
Units
WARNING
Contactwiththereelsorothermovingparts
canresultinpersonalinjury.
•Keepngers,hands,andclothingaway
fromthereelsorothermovingparts.
•Neverattempttoturnthereelsbyhandor
footwhiletheengineisrunning.
Note:Whenbacklapping,thefrontunitsalloperate
together,andtherearunitsoperatetogether.
1.Positionthemachineonalevelsurface,lower
thecuttingunits,shutofftheengine,engagethe
parkingbrake,andmovetheEnable/Disable
switchtotheDISABLEposition.
2.Unlockandraisetheseattoexposethebacklap
levers(Figure95).
3.Makeinitialreel-to-bedknifeadjustments
appropriateforbacklappingonallcuttingunits
thataretobebacklapped;refertotheOperator's
Manualforthecuttingunits.
4.Starttheengineandrunatlowidlespeed.
DANGER
Changingtheenginespeedwhile
backlappingmaycausethereelstostall.
•Neverchangetheenginespeedwhile
backlapping.
•Backlaponlyatlowengine-idlespeed.
5.Selecteitherfront,rear,orbothbacklaplevers
todeterminewhichunitstobacklap(Figure95).
DANGER
Toavoidpersonalinjury,becertainthat
youareclearofthecuttingunitsbefore
proceeding.
6.WiththeMow/TransportleverintheMOW
position,movetheEnable/Disableswitchto
theENABLEposition.MovetheLowerMow/Lift
controlforwardtostartthebacklappingoperation
onthedesignatedreels.
7.Applylappingcompoundwithalong-handled
brush.
Important:Neveruseashort-handled
brush.
8.Ifthereelsstallorbecomeerraticwhile
backlapping,selectahigherreel-speedsetting
untilthespeedstabilizes,thenreturnthereel
speedtoyourdesiredspeed.
9.Toadjustthecuttingunitswhilebacklapping,turn
thereelsoffbymovingtheLowerMow/Raise
leverrearward;theEnable/Disableswitchtothe
DISABLEposition,andshutofftheengine.
Aftercompletingadjustments,repeatsteps4
through8.
1
g021209
g021209
Figure95
1.Backlaplevers
10.Repeattheprocedureforallcuttingunitsyou
wanttobacklap.
11.Whennished,returnthebacklapleverstothe
MOWposition,lowertheseat,andwashall
lappingcompoundoffthecuttingunits.
Note:Adjustthecutting-unitreeltobedknifeas
needed.Adjustthecutting-unitreelspeedtothe
desiredmowingsetting.
Important:Ifthebacklapswitchis
notreturnedtotheOFFpositionafter
backlapping,thecuttingunitsdonotraise
orfunctionproperly.
Note:Forabettercuttingedge,runaleacross
thefrontfaceofthebedknifeafterlapping.This
removesanyburrsorroughedgesthatmay
havebuiltuponthecuttingedge.
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