Operator's Manual

BacklappingtheCutting
Unit
WARNING
Contactwiththecuttingunitsorothermoving
partscanresultinpersonalinjury.
•Keepyourhandsandclothingawayfrom
thecuttingunitsorothermovingparts.
•Neverattempttoturnthecuttingunitsby
handorfootwhiletheengineisrunning.
Thisprocessisrecommendedforrestoringthesharp
cuttingedgestocylindersandbottombladeswhich
areessentialforgoodqualitygrasscutting.
Thisprocesscanonlyremoveasmallamountof
metaltorestorethecuttingedges.Ifthebladeedges
areseriouslywornordamaged,itwillbenecessaryto
removethecomponentpartsandgrindthem.
1.Turntheengineoffandapplytheparkingbrake.
2.Adjustthecuttingcylinderstothebottomblades
toobtaineetingcontact.
3.Applyamedium-gradedetergent-based
carborundumpastetothecuttingedgesofthe
cylinderswithalonghandledbrush.
80GradeCarborundumPaste
PartNo.
1lb(0.45kg)
63-07-088
25lb(11.25kg)
63-07-086
g014445
Figure15
4.Ensurethattheareasurroundingthecutting
unitsisclearofpeople.Keepyourhandsand
feetclearofthecuttingcylinderswhilethe
engineisrunning.
5.Sitontheoperatorseat,starttheengine,and
settheenginespeedatidle.
6.Operatethecuttingunitdriveswitchtothe
reverse/backlappositionforaperiodoftime
andlistentothegrindingaction.
g014443
Figure16
7.OperatethecuttingunitdriveswitchtotheOFF
positionandswitchofftheenginewhenthe
grindingactionhasstopped.
8.Thoroughlycleanthebladeedgesandadjustthe
cuttingcylinderstothebottomblades.Check
thatathinpieceofpapercanbecutcleanlyat
allpointsalongthecuttingedgeswhilerotating
thecylindersbyhand.
9.Iffurtherbacklappingisnecessaryrepeatsteps
2through8.
10.Thoroughlyremoveandwashoffalltracesof
thecarborundumpastefromthecylindersand
bottomblades.
GrindingtheCuttingUnit
Grindthecylinderspiraledgesorbottombladeedges
iftheybecomeexcessivelyroundedordistorted.
Replacethebottombladeswhentheyarenearthe
endoftheirwearlife.Grindnewbladesontheir
holderspriortotting.Whengrindingisnecessary,
grindbothcylindersandbottombladesatthesame
time,exceptwhenanewcylinderistted,inwhich
caseitisnecessaryonlytogrindthebottomblade.
Allgrindingoperationsshouldbeperformedby
yourauthorizedT orodistributoronaquality,well
maintainedcylinder/bottombladegrindingmachine.
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