Exmark LAZER Z PROPANE LZS740PKC524 User manual

LAZERZ®PROPANE
ForSerialNos.
314,000,000&Higher
PartNo.4501-809Rev.A

WARNING
CALIFORNIA
Proposition65Warning
Thisproductcontainsachemical
orchemicalsknowntotheStateof
Californiatocausecancer,birthdefects,
orreproductiveharm.
Theengineexhaustfromthisproduct
containschemicalsknowntotheStateof
Californiatocausecancer,birthdefects,
orotherreproductiveharm.
Important:Theengineinthisproductisnot
equippedwithasparkarrestermufer.Itisa
violationofCaliforniaPublicResourceCode
(CPRC)Section4442touseoroperatethis
engineonanyforest-covered,brush-covered,
orgrass-coveredlandasdenedinCPRC4126.
Otherstatesorfederalareasmayhavesimilar
laws.
Toacquireasparkarresterforyourunit,seeyour
EngineServiceDealer.
Thissparkignitionsystemcomplieswiththe
CanadianstandardICES-002.Cesystèmed’allumage
parètincelledevèhiculeestconformeàlanorme
NMB-002duCanada.
TheenclosedEngineOwner’sManualis
suppliedforinformationregardingTheU.S.
EnvironmentalProtectionAgency(EPA)and
theCaliforniaEmissionControlRegulationof
emissionsystems,maintenanceandwarranty.
KeepthisengineOwner’sManualwithyourunit.
ShouldthisengineOwner’sManualbecome
damagedorillegible,replaceimmediately.
Replacementsmaybeorderedthroughthe
enginemanufacturer.
Exmarkreservestherighttomakechangesor
addimprovementstoitsproductsatanytime
withoutincurringanyobligationtomakesuch
changestoproductsmanufacturedpreviously.
Exmark,oritsdistributorsanddealers,accept
noresponsibilityforvariationswhichmaybe
evidentintheactualspecicationsofitsproducts
andthestatementsanddescriptionscontained
inthispublication.
©2013ExmarkMfg.Co.,Inc.
IndustrialParkBox808
Beatrice,NE683102
Contactusatwww.Exmark.com.
PrintedintheUSA
AllRightsReserved

Introduction
CONGRATULATIONSonthepurchaseofyour
ExmarkMower.Thisproducthasbeencarefully
designedandmanufacturedtogiveyouamaximum
amountofdependabilityandyearsoftrouble-free
operation.
Thismanualcontainsoperating,maintenance,
adjustment,andsafetyinstructionsforyourExmark
mower.
BEFOREOPERATINGYOURMOWER,
CAREFULLYREADTHISMANUALINITS
ENTIRETY.
Byfollowingtheoperating,maintenance,andsafety
instructions,youwillprolongthelifeofyourmower,
maintainitsmaximumefciency,andpromotesafe
operation.
Important:Tomaximizesafety,performance,
andproperoperationofthismachine,itis
essentialthatalloperatorscarefullyreadand
fullyunderstandthecontentsoftheOperator’s
manualprovidedwiththeproduct.Safe
operationofExmarkequipmentisessential.
Failuretocomplywiththeoperatinginstructions
orreceivepropertrainingmayresultininjury.
Gotohttp://www.Exmark.comforadditional
safeoperationinformation,suchassafetytips,
trainingmaterials,andOperator’smanuals.
Ifadditionalinformationisneeded,orshould
yourequiretrainedmechanicservice,contactyour
authorizedExmarkequipmentdealerordistributor.
AllExmarkequipmentdealersanddistributorsare
keptinformedofthelatestmethodsofservicing
andareequippedtoprovidepromptandefcient
serviceintheeldorattheirservicestations.They
carryamplestockofservicepartsorcansecurethem
promptlyforyoufromthefactory.
AllExmarkpartsarethoroughlytestedandinspected
beforeleavingthefactory,however,attentionis
requiredonyourpartifyouaretoobtainthefullest
measureofsatisfactionandperformance.
Wheneveryouneedservice,genuineExmarkparts,
oradditionalinformation,contactanAuthorized
ServiceDealerorExmarkCustomerServiceandhave
themodelandserialnumbersofyourproductready.
Figure1identiesthelocationofthemodelandserial
numbersontheproduct.Writethenumbersinthe
spaceprovided.
Figure1
1.Modelandserialnumberlocation
ModelNo.
SerialNo.
3

Contents
Introduction...........................................................3
Safety.....................................................................5
SafetyAlertSymbol.........................................5
SafeOperatingPractices..................................5
SafetyandInstructionalDecals......................13
Specications........................................................18
ModelNumbers.............................................18
Systems..........................................................18
Dimensions....................................................20
TorqueRequirements.....................................21
ProductOverview.................................................21
Operation..............................................................22
Controls.........................................................22
Pre-Start.........................................................25
OperatingInstructions...................................25
Transporting..................................................29
Maintenance..........................................................32
RecommendedMaintenanceSchedule(s)............32
PeriodicMaintenance........................................33
CheckEngineOilLevel..................................33
CheckBatteryCharge.....................................33
CheckMowerBlades......................................35
CheckSafetyInterlockSystem........................36
CheckRolloverProtectionsSystems(Roll
Bar)Knobs.................................................36
CheckSeatBelt...............................................36
CheckforLooseHardware.............................37
ServiceAirCleaner.........................................37
ChangeEngineOil.........................................37
CheckHydraulicOilLevel..............................37
CheckTirePressures......................................38
CheckConditionOfBelts...............................38
LubricateGreaseFittings................................38
LubricateDeckLiftPivot...............................39
CheckSparkPlugs..........................................39
CheckLPGTank............................................39
CheckLPGFuelDeliverySystem...................39
CheckHighPressureLinesand
Fittings.......................................................40
DrainVaporizer/Regulator.............................40
CleanVaporizer/Regulator.............................40
RemoveCombustionDeposits.......................40
CheckFuelLockOffAssembly.......................41
ChangeEngineLPGFuelFilters.....................41
ChangeHydraulicSystemFilterand
Fluid..........................................................41
WheelHub-SlottedNutTorque
Specication...............................................41
ThreadLockingAdhesives..............................42
Copper-BasedAnti-seize...............................42
DielectricGrease............................................42
Adjustments......................................................42
DeckLeveling................................................42
PumpDriveBeltTension................................44
DeckBeltTension..........................................44
AdjustingtheParkingBrake............................44
ElectricClutchAdjustment.............................45
MotionControlLinkageAdjustment..............46
MotionControlDamperAdjustment..............47
MotionControlNeutralLockPivot
Adjustment................................................48
MotionControlHandleAdjustment...............48
MotionControlFullForwardTracking
Adjustment................................................48
CasterPivotBearingsPre-Load
Adjustment................................................49
LPGRegulator..............................................49
Cleaning............................................................50
CleanEngineandExhaustSystem
Area...........................................................50
RemoveEngineShroudsandClean
CoolingFins...............................................50
CleanHydroFanCoolingFins........................50
CleanDebrisFromMachine...........................50
CleanGrassBuild-UpUnderDeck.................50
WasteDisposal...............................................50
Troubleshooting....................................................52
Schematics............................................................55
4

Safety
Safety
SafetyAlertSymbol
ThislawnmowermeetsorexceedstheB71.4
specicationsoftheAmericanNationalStandards
Instituteineffectatthetimeofproduction.
Exmarkdesignedandtestedthislawnmowertooffer
reasonablysafeservice;however,failuretocomply
withthefollowinginstructionsmayresultinpersonal
injury.
ThisSafetyAlertSymbol(Figure2)isusedbothin
thismanualandonthemachinetoidentifyimportant
safetymessageswhichmustbefollowedtoavoid
accidents.
Thissymbolmeans:ATTENTION!BECOME
ALERT!YOURSAFETYISINVOLVED!
Figure2
SafetyAlertSymbol
Thesafetyalertsymbolappearsaboveinformation
whichalertsyoutounsafeactionsorsituations
andwillbefollowedbythewordDANGER,
WARNING,orCAUTION.
DANGER:Whitelettering/Redbackground.
Indicatesanimminentlyhazardoussituationwhich,if
notavoided,Willresultindeathorseriousinjury.
WARNING:Blacklettering/Orangebackground.
Indicatesapotentiallyhazardoussituationwhich,if
notavoided,Couldresultindeathorseriousinjury.
CAUTION:Blacklettering/Yellowbackground.
Indicatesapotentiallyhazardoussituationwhich,if
notavoided,Mayresultinminorormoderateinjury.
Thismanualusestwootherwordstohighlight
information.Importantcallsattentiontospecial
mechanicalinformationandNoteemphasizes
generalinformationworthyofspecialattention.
SafeOperatingPractices
Training
WhatisLPG?LPGstandsforliqueedpetroleum
gasandismorecommonlycalledpropane.LPGis
aliquidfuelthatisstoredinatankunderpressure.
Beforetheliquidleavesthetank,itisconvertedinto
avapor.SinceLPGisstoredasbothliquidandgas,
itmayleakfromjointsorconnectionsthatarenot
sealedproperly.LPGbecomesammablewhenitis
mixedwithair.
TheLPGinformationinthisOperator'smanual
isprovidedonlyasaguide.ConsulttheNFPA
58:LiqueedPetroleumGasCodeforadditional
safetyinformation.ThisNationalFireProtection
Association(NFPA)codepertainstothehandling,
storing,transporting,andusageofLPG.
•ReadtheOperator’sManualandothertraining
material.Iftheoperator(s)ormechanic(s)can
notreadEnglishitistheowner’sresponsibilityto
explainthismaterialtothem;otherlanguagesmay
beavailableonourwebsite.
•Becomefamiliarwiththesafeoperationofthe
equipment,operatorcontrols,andsafetysigns.
•Alloperatorsandmechanicsshouldbetrained.
Theownerisresponsiblefortrainingtheusers.
•Neverletchildrenoruntrainedpeopleoperate
orservicetheequipment.Localregulationsmay
restricttheageoftheoperator.
•Onlyadultsandmatureteenagersshouldoperate
amower,andevenmatureteenagersshouldhave
adultsupervision.Besureateenager:
1.hasreadandunderstandstheOperator's
Manualandrecognizestherisksinvolved;
2.issufcientlymaturetousecaution;and
3.isofsufcientsizeandweighttooperate
thecontrolscomfortablyandtomanagethe
mowerwithouttakingrisks.
•Theowner/usercanpreventandisresponsible
foraccidentsorinjuriesoccurringtohimselfor
herself,otherpeopleorproperty.
Preparation
•Evaluatetheterraintodeterminewhataccessories
andattachmentsareneededtoproperlyand
safelyperformthejob.Onlyuseaccessoriesand
attachmentsapprovedbyExmark.
5

Safety
•Wearappropriateclothingincludingsafetyglasses,
substantialfootwear,andhearingprotection.Do
Notoperatewhenbarefootorwhenwearingopen
sandals.Longhair,looseclothingorjewelrymay
gettangledinmovingparts.
CAUTION
Thismachineproducessoundlevelsinexcess
of85dBAattheoperator’searandcancause
hearinglossthroughextendedperiodsof
exposure.
Wearhearingprotectionwhenoperatingthis
machine.
•Inspecttheareawheretheequipmentistobe
usedandremoveallrocks,toys,sticks,wires,
bones,andotherforeignobjectswhichcanbe
thrownbythemachineandmaycausepersonal
injurytotheoperatororbystanders.
DANGER
LPGfuelisextremelyammableandvapors
areexplosive.
AreorexplosionfromLPGfuelcanburn
you,others,andcausepropertydamage.
•Neversmokearoundtank(s)andstay
awayfromanopenameorwherefumes
maybeignitedbyaspark.
•Extinguishallsourcesofsparkorame
whenapproachingLPGtanksormowers.
Thehazardincreasesforenclosedtrailers
orstoragelocationswherevaporleakage
mayoccurandcollect.
•LPGisheavierthanairandmay
accumulateinlowlyingareas,suchas
ditches,drains,orpits.
•LPGtank(s)shouldbelledbytrained
andqualiedpersonnelONLY.
•Nevertamperwithorrepairthetank(s);
contacttrainedandqualiedpersonnel.
•DoNotchangethetank(s)whenthe
engineisrunning.
•Beforedisconnectingthehose(s),purge
allLPGvaporsfromthesystem,by
closingthefuelvalve(s)onALLtanksand
allowingtheenginetorununtilitstops.
•Storethetank(s)awayfromheat,sparks,
oropenames.
•DoNotoperatewithoutentireexhaust
systeminplaceandinproperworking
condition.
6

Safety
DANGER
LPGfuelisextremelyammableandvapors
areexplosive.
•Incaseofretakethefollowingsteps:
1.Ifyoucansafelydoso,stoptheowof
gasasquicklyaspossible.Neverput
outameunlessgascanbeshutoff.
2.NotifytheFireDepartmentandclear
immediateareaofallpeople.
3.Whengasowisstopped,putoutthe
re.Usuallywhenowofgasiscutoff,
rewillautomaticallystop.
4.Ifgasowcannotbeimmediately
stopped,directwaterontankstokeep
themcool,butDoNotputoutre.
•Storagelocationsandtrailersshouldbe
equippedwithatleastoneapproved
portablereextinguisherhavinga
minimumcapacityof18lb(8.2kg)dry
chemicalwithaB:Crating.DoNot
useCarbonTetrachlorideextinguishers
(Pyreneetc.).
DANGER
LPGvaporsandliquidescapingfromthetank
maycauseseriousinjuryordeath.Vapors
orliquidmaycausesuffocation,freezingof
tissue,orfrostbite.
•Storeandservicethemowerinawell
ventilatedarea.
•AnapprovedLPGdetectorinstalledin
trailersandstorageareasisrecommended.
•LPGisheavierthanairandmay
accumulateinlowlyingareas,suchas
ditches,drains,orpits.
•Avoidbreathingofvapors.
•Keepawayfromventvalve.
•Keepawayfromeyesandskin.
•Contacttrainedandqualiedpersonnelif
tankshowssignsoffrostedareas,makesa
hissingsound,oremitsafoulodor.
•Obtainimmediatemedicalattentionif
contactoccurswithvaporsorliquid.
•Checkthattheoperatorspresencecontrols,
safetyswitches,andshieldsareattachedand
functioningproperly.DoNotoperateunlessthey
arefunctioningproperly.
Inspection
ItisveryimportanttochecktheLPGtankand
componentsforwearorleaks.
Important:Nevercheckforleaksusinganopen
ame.
Important:Neverusebarehandswhen
checkingthettingorvalve.EscapingLPG
vaporandliquidfreezesskinoncontact.
Important:Onlyhandtightentankconnection
tting.Overtighteningbytheuseoftoolsmay
causedamage.Ifhandtighteningdoesnotstop
aleak,contacttrainedandqualiedpersonnel
immediately.
•Beforeeachuse:
–Visuallyinspectthetank,hose,andttingand
bealerttoafoulodorcomingfromthetank.
–TheLPGtankshouldbefreeofdentsor
damage.Ifthetankshowsignsofdentsor
damage,replaceitimmediately.
–Checkthevalveandttingopeningsfordirt
anddebris.
–Slowlyopenthevalveallthewayandlisten
foracontinuoushissfromtheregulator,it
mayindicatealeak.
–LPGhasarotteneggorskunksmelladded
toittohelpdetectagasleak.Ifyoudetect
agasleak:
◊TurnofftheLPGvalveifyoucansafely
doso.
◊Leavethearea.
◊Contacttrainedandqualiedpersonnel
immediately.
–DoNotuseifthehosesareabraded,damaged,
kinked,orattened.
–Makesurethetankissecurelymountedto
themower.Ifthetankisloose,thehoseor
ttingsmayleak.
•Witheachtankchange:
–Checkallgauges,ttings,andvalvesfor
damage.
–Lookfordeterioration,damagedormissing
o-ringsontankconnectiontting.
7

Safety
–InspecttheLPGtankandthefuelconnection
jointforleaks.Usethefollowingprocedure
belowtodetectleaks:
◊Applyanapprovedleakdetectorsolution,
obtainedfromatrainedandqualiedLPG
distributor,orathicknon-ammoniasoapy
watersolution(50%non-ammoniasoap
and50%water).(Aleakdetectorsolution
thatcontainsammoniawillcausethe
ttingstocorrodeandleak.)
◊Usingasmallbrushorspraybottle,apply
thesolutionaroundallthettingsofthe
LPGtankandthefuelconnectionjoint.
◊Slowlyopenthegasvalveahalf-turn.
◊Ifbubblesaredetected,thejointortting
hasaleak.Shutoffthevalve,tighten
theleakingconnection,andslowlyopen
thevalveagain.Ifbubblesstillappear,
DoNotusethetank.Ifitissafetodo
so,removethetankfromyourmower;
otherwise,contacttrainedandqualied
personnelimmediately.
◊Ifnobubblesaredetected,theLPGtank
maybeused.
•Weekly:
–ChecktheentireLPGfueldeliverysystemfor
damageordeterioration.
–ChecktheentireLPGfueldeliverysystemfor
leaksatalljointsusingthesamemethodas
describedintheprevioussection.
–Followalltheinspectionchecksasspeciedin
thetwopreviousinspectionsections.
•TankRequalication:
–USDOT(UnitedStatesDepartmentof
Transportation)regulationsrequireLPGtanks
tobeinspected,requalied,andmarkedwithin
12yearsofthemanufacturedateandona
regularbasisthereafter.Typicallythisoccurs
whenthetankisrelled;contactatrainedand
qualiedLPGtankproviderformoredetails.
–DoNotlltheLPGtankifitisbeyondthe
requalicationperiod.
–DoNotlldamagedorrustedLPGtanks.
Operation
WARNING
Operatingengineparts,especiallythemufer,
becomeextremelyhot.Severeburnscanoccur
oncontactanddebris,suchasleaves,grass,
brush,etc.cancatchre.
•Allowengineparts,especiallythemufer,to
coolbeforetouching.
•Removeaccumulateddebrisfrommuferand
enginearea.
WARNING
Engineexhaustcontainscarbonmonoxide,
whichisanodorlessdeadlypoisonthatcankill
you.
DoNotrunengineindoorsorinasmallconned
areawheredangerouscarbonmonoxidefumes
cancollect.
•Operateonlyindaylightorgoodarticiallight,
keepingawayfromholesandhiddenhazards.
•Lightningcancausesevereinjuryordeath.If
lightningisseenorthunderisheardinthearea,
DoNotoperatethemachine;seekshelter.
•Besurealldrivesareinneutralandparkingbrake
isengagedbeforestartingengine.Useseatbelts
withtherollbarintheraisedandlockedposition.
•Neveroperatethemowerwithdamagedguards,
shields,orcovers.Alwayshavesafetyshields,
guards,switchesandotherdevicesinplaceandin
properworkingcondition.
•Nevermowwiththedischargedeectorraised,
removedoralteredunlessthereisagrass
collectionsystemormulchkitinplaceand
workingproperly.
•DoNotchangetheenginegovernorsettingor
overspeedtheengine.
•Parkmachineonlevelground.Stopengine,wait
forallmovingpartstostop,removekeyand
engageparkingbrake:
–Beforechecking,cleaningorworkingonthe
mower.
–Afterstrikingaforeignobjectorabnormal
vibrationoccurs(inspectthemowerfor
damageandmakerepairsbeforerestarting
andoperatingthemower).
8

Safety
–Beforeclearingblockages.
–Wheneveryouleavethemower.
•Stopengine,waitforallmovingpartstostop,and
engageparkingbrake:
–Beforerefueling.
–Beforedumpingthegrasscatcher.
WARNING
Hands,feet,hair,clothing,oraccessoriescan
becomeentangledinrotatingparts.Contact
withtherotatingpartscancausetraumatic
amputationorseverelacerations.
•DoNotoperatethemachinewithout
guards,shields,andsafetydevicesinplace
andworkingproperly.
•Keephands,feet,hair,jewelry,orclothing
awayfromrotatingparts.
•NEVERcarrypassengers.DONOToperate
themowerwhenpeople,especiallychildren,or
petsareinthearea.
•Bealert,slowdownandusecautionwhen
makingturns.Lookbehindandtothesidebefore
changingdirections.
•Stoptheblades,slowdown,andusecaution
whencrossingsurfacesotherthangrassandwhen
transportingthemowertoandfromtheareato
bemowed.
•Beawareofthemowerdischargepathanddirect
dischargeawayfromothers.
•DoNotoperatethemowerundertheinuence
ofalcoholordrugs.
•Useextremecarewhenloadingorunloadingthe
machineintoatrailerortruck.
•Usecarewhenapproachingblindcorners,shrubs,
trees,orotherobjectsthatmayobscurevision.
SlopeOperation
UseExtremecautionwhenmowingand/orturning
onslopesaslossoftractionand/ortip-overcould
occur.Theoperatorisresponsibleforsafeoperation
onslopes.
DANGER
Operatingonwetgrassorsteepslopescancause
slidingandlossofcontrol.Wheelsdroppingover
edges,ditches,steepbanks,orwatercancause
rollovers,whichmayresultinseriousinjury,
deathordrowning.
•DoNotmowslopeswhengrassiswet.
•DoNotmowneardrop-offsornearwater.
•DoNotmowslopesgreaterthan15degrees.
•Reducespeedanduseextremecautionon
slopes.
•Avoidsuddenturnsorrapidspeedchanges.
•Keeptherollbarintheraisedandlocked
positionanduseseatbelt.
•Seeinsidethebackcovertodeterminethe
approximateslopeangleoftheareatobemowed.
•Useawalkbehindmowerand/orahandtrimmer
neardrop-offs,ditches,steepbanksorwater.
(Figure3).
Figure3
1.SafeZone-Usethemowerhereonslopeslessthan15
degrees
2.DangerZone-Useawalkbehindmowerand/orhand
trimmeronslopesgreaterthan15degrees,near
drop-offsandwater.
3.Water
•Removeormarkobstaclessuchasrocks,tree
limbs,etc.fromthemowingarea.Tallgrasscan
hideobstacles.
•Watchforditches,holes,rocks,dipsandrisesthat
changetheoperatingangle,asroughterraincould
overturnthemachine.
•Avoidsuddenstartswhenmowinguphillbecause
themowermaytipbackwards.
9

Safety
•Beawarethatoperatingonwetgrass,acrosssteep
slopesordownhillmaycausethemowertolose
traction.Lossoftractiontothedrivewheelsmay
resultinslidingandalossofbrakingandsteering.
•Alwaysavoidsuddenstartingorstoppingona
slope.Iftireslosetraction,disengagetheblades
andproceedslowlyofftheslope.
•Followthemanufacturer’srecommendationsfor
wheelweightsorcounterweightstoimprove
stability.
•Useextremecarewithgrasscatchersor
attachments.Thesecanchangethestabilityofthe
machineandcauselossofcontrol.
UsingtheRolloverProtectionSystem
(ROPS)
ARolloverProtectionSystem(rollbar)isinstalled
ontheunit.
WARNING
Thereisnorolloverprotectionwhentherollbar
isdown.Wheelsdroppingoveredges,ditches,
steepbanks,orwatercancauserollovers,which
mayresultinseriousinjury,deathordrowning.
•DoNotremovetheROPS.
•Keeptherollbarintheraisedandlocked
positionanduseseatbelt.
•Lowertherollbaronlywhenabsolutely
necessary.
•DoNotwearseatbeltwhentherollbaris
down.
•Driveslowlyandcarefully.
•Raisetherollbarassoonasclearance
permits.
•Becertainthattheseatbeltcanbereleasedquickly
intheeventofanemergency.
•Checkcarefullyforoverheadclearances(i.e.
branches,doorways,andelectricalwires)before
drivingunderanyobjectsandDoNotcontact
them.
•Intheeventofarollover,taketheunittoan
AuthorizedServiceDealertohavetheROPS
inspected.
•ReplaceadamagedROPS.DoNotrepairor
revise.
•Anyaccessories,alterations,orattachmentsadded
totheROPSmustbeapprovedbyExmark.
MaintenanceandStorage
•Disengagedrives,setparkingbrake,stopengine
andremovekeyordisconnectsparkplugwire.
Waitforallmovementtostopbeforeadjusting,
cleaningorrepairing.
•Keepengineandengineareafreefrom
accumulationofgrass,leaves,excessivegrease
oroil,andotherdebriswhichcanaccumulate
intheseareas.Thesematerialscanbecome
combustibleandmayresultinare.
•LetenginecoolbeforestoringandDoNotstore
nearameoranyenclosedareawhereopenpilot
lightsorheatappliancesarepresent.
•Storemowerinawellventilatedoutdoorshelter,
building,ortrailer.
•Closefuelvalvewhenmowerisnotinuse,
includingwhilestoringortransporting.
•Theemptytank(s)shouldbetreatedasifitwas
full.
•Storethetank(s)outsideofbuildingsinanopen
wellventilatedarea,awayfromsparkandames.
•DoNotstorethetank(s)ormachinewith
tank(s)inanareawherethetemperaturecanrise
above120°F(49°C).Ifthetemperatureexceeds
approximately160°F(71°C),thetankwillrelease
highlyammablepropanevapor.SeePreparation
intheSafetySection.
•Storethetank(s)inuprightpositionorwith
pressurereliefvalvetowardsthetop.
•DoNotdrag,drop,orabusethetank(s).
•Storageoftheemptytank(s)shouldfollowlocal
andstateregulations.
•Parkmachineonlevelground.Neverallow
untrainedpersonneltoservicemachine.
•Usejackstandstosupportcomponentswhen
required.
•Carefullyreleasepressurefromcomponentswith
storedenergy.
•Disconnectbatteryorremovesparkplugwire
beforemakinganyrepairs.Disconnectthe
negativeterminalrstandthepositivelast.
Reconnectpositiverstandnegativelast.
10

Safety
•Usecarewhencheckingblades.Wraptheblade(s)
orweargloves,andusecautionwhenservicing
them.Onlyreplacedamagedblades.Never
straightenorweldthem.
•Keephandsandfeetawayfrommovingparts.
Ifpossible,DoNotmakeadjustmentswiththe
enginerunning.
•Chargebatteriesinanopenwellventilatedarea,
awayfromsparkandames.Unplugcharger
beforeconnectingordisconnectingfrombattery.
Wearprotectiveclothinganduseinsulatedtools.
DANGER
Chargingorjumpstartingthebatterymay
produceexplosivegases.Batterygasescan
explodecausingseriousinjury.
•Keepsparks,ames,orcigarettesaway
frombattery.
•Ventilatewhenchargingorusingbattery
inanenclosedspace.
•Makesureventingpathofbatteryis
alwaysopenoncebatteryislledwith
acid.
•Alwaysshieldeyesandfacefrombattery.
DANGER
Batteryelectrolytecontainssulfuricacid,
whichispoisonousandcancausesevere
burns.Swallowingelectrolytecanbefatalor
ifittouchesskincancausesevereburns.
•Wearsafetyglassestoshieldeyes,and
rubberglovestoprotectskinandclothing
whenhandlingelectrolyte.
•DoNotswallowelectrolyte.
•Intheeventofanaccident,ushwith
waterandcalladoctorimmediately.
CAUTION
Iftheignitionisinthe“ON”positionthere
ispotentialforsparksandengagementof
components.Sparkscouldcauseanexplosion
ormovingpartscouldaccidentallyengage
causingpersonalinjury.
Besureignitionswitchisinthe“OFF”
positionbeforechargingthebattery.
•Keepallguards,shieldsandallsafetydevicesin
placeandinsafeworkingcondition.
•Checkallboltsfrequentlytomaintainproper
tightness.
•Frequentlycheckforwornordeteriorating
componentsthatcouldcreateahazard.
WARNING
Removalormodicationoforiginalequipment,
partsand/oraccessoriesmayalterthewarranty,
controllability,andsafetyofthemachine.
Unauthorizedmodicationstotheoriginal
equipmentorfailuretouseoriginalExmark
partscouldleadtoseriousinjuryordeath.
Unauthorizedchangestothemachine,engine,
fuelorventingsystem,mayviolateapplicable
safetystandardssuchas:ANSI,OSHAand
NFPAand/orgovernmentregulationssuchas
EPAandCARB.
WARNING
Hydraulicuidescapingunderpressure
canpenetrateskinandcauseinjury.Fluid
accidentallyinjectedintotheskinmustbe
surgicallyremovedwithinafewhoursbyadoctor
familiarwiththisformofinjuryorgangrenemay
result.
•Ifequipped,makesureallhydraulicuid
hosesandlinesareingoodconditionandall
hydraulicconnectionsandttingsaretight
beforeapplyingpressuretohydraulicsystem.
•Keepbodyandhandsawayfrompinhole
leaksornozzlesthatejecthighpressure
hydraulicuid.
•Usecardboardorpaper,notyourhands,to
ndhydraulicleaks.
•Safelyrelieveallpressureinthehydraulic
systembyplacingthemotioncontrollevers
inneutralandshuttingofftheenginebefore
performinganyworkonthehydraulicsystem.
11

Safety
WARNING
Fuelsystemcomponentsareunderhigh
pressure.Theuseofimpropercomponentscan
resultinsystemfailure,fuelleakageandpossible
explosion.
Useonlyapprovedfuellinesandfuelltersfor
highpressuresystems.
12

Safety
SafetyandInstructionalDecals
•Keepallsafetysignslegible.Removeallgrease,
dirtanddebrisfromsafetysignsandinstructional
labels.
•Replaceallworn,damaged,ormissingsafety
signs.
•Whenreplacementcomponentsareinstalled,be
surethatcurrentsafetysignsareafxedtothe
replacedcomponents.
•Ifanattachmentoraccessoryhasbeeninstalled,
makesurecurrentsafetysignsarevisible.
•Newsafetysignsmaybeobtainedfrom
yourauthorizedExmarkequipmentdealeror
distributororfromExmarkMfg.Co.Inc.
•Safetysignsmaybeafxedbypeelingoffthe
backingtoexposetheadhesivesurface.Apply
onlytoaclean,drysurface.Smoothtoremove
anyairbubbles.
•Familiarizeyourselfwiththefollowingsafetysigns
andinstructionlabels.Theyarecriticaltothesafe
operationofyourExmarkcommercialmower.
1-303508
1-403005
1-633922
98-5954
103-2076
13

Safety
107-2102
109-3148
109-7232
1.Fast3.Neutral
2.Slow4.Reverse
109-7330
109-7929
109-9361
DeckDriveBeltRouting
14

Safety
109-9875
116-0157
1.SeeOperator'sManual
116-0205
116-0211
116-0752
1.Latch2.Unlatch
15

Safety
116-1714
116-2844
1.Throttle–fast2.Throttle–slow
116-3303
116-3446
1.Battery4.Parkingbrake
2.Hourmeter5.Neutral
3.PTO6.Operatorpresence
switch
116-4858
126-2055
1.Wheellugnuttorque95ft-lb(129N-m)(4x)
2.Wheelhubnuttorque235ft-lb(319N-m)
3.ReadandunderstandtheOperator’smanualbefore
performinganymaintenance,checktorqueafterrst
100hoursthenevery500hoursthereafter.
PTOSwitchSymbols
1.PTO–disengage2.PTO–engage
16

Safety
109-7069
109-9906
17

Specications
Specications
ModelNumbers
SerialNos:314,000,000andHigher
LZS740PKC524,LZS740PKC604;LZS740PKC724
Systems
Engine
•EngineSpecications:SeeyourEngineOwner’s
Manual
•EngineOilType:Exmark4–CyclePremium
EngineOil
•RPM:FullSpeed:3750±50RPM(PTOnot
engaged)Idle:1500±100RPM
TankTypeandRelling
Important:TheLPGtankusedonthismower
isaspecialtankwithinternalbafesdesigned
forthisapplication.
•HorizontalTankSpecications:
–TankMaterial:Aluminum
–Capacity:43.5lb
–DisconnectCoupling:LHACMEThreaded
–FuelWithdrawal:Vapor
–FuelShut-OffValve:Rotateclockwiseto
close.
•TypeofFuel:HD5gradepropane
•Newtanksmustbeproperlylledbytrainedand
qualiedpersonnel.
•OnlyusetanksrecommendedbyExmark.Failure
todosowillresultinimproperoperationofthe
fuelsystem.
CAUTION
Undernocircumstancesshouldpropane
tankslledbeyond80%capacitybeusedin
service.
Theuseofoverlledtanksmayresultinthe
releaseofhighlyconcentratedandextremely
ammableliquidpropane.RefertotheSafety
section.
Note:Useofa“forklift”typeliquidwithdrawaltank
willresultinicingorfreezingoftheLPGregulator
andpreventtheenginefromoperating.Thismay
alsoresultinpermanentfuelsystemdamageandthe
releaseofhighlyammablepropaneliquidorvapor.
ElectricalSystem
•ChargingSystem:FlywheelAlternator
•ChargingCapacity:20amps
•BatteryType:BCIGroupU1
•RecommendedMinimumBatteryCCA:260CCA
•BatteryVoltage:12Volt
•LowVoltageLight—RHcontrolpanel
•Polarity:NegativeGround
•Fuses:
–25ampmainfuse
–25ampchargingsystemfuse
–10ampPTOfuse
–15ampaccessoryfuse
SafetyInterlockSystem
•LCDindicatorsappearforthePTO,parkbrake,
drivelevers,andoperatorpresenceinthemessage
displayontheRHcontrolpanel.
•PTOmustbedisengaged,brakeengaged,and
motioncontrolleversout(neutrallock)tostart
engine.(Itisnotnecessaryfortheoperatortobe
intheseattostarttheengine.)
•OperatormustbeinseatwhenPTOisengaged,
brakeisdisengaged,ormotioncontrolleversare
movedinorenginewillstop.
•Enginewillstopifeithertheleft,theright,or
bothleversaremovedfromneutrallockposition
whilebrakeisengaged.
OperatorControls
•SteeringandMotionControl:
18

Specications
Note:Motioncontrolleversareadjustableto
twoheights.
–Separatelevers,oneachsideoftheconsole,
controlspeedanddirectionoftravelofthe
respectivedrivewheels.
–Steeringiscontrolledbyvaryingtheposition
oftheleversrelativetoeachother.
–Movingmotioncontrolleversoutward(in
slots)locksthedrivesysteminneutral.
•PTOEngagementSwitch:Engageselectricclutch
(todrivebelt)whichengagesmowerblades.
•ParkingBrakeLever:Engagesparkingbrake.
•ParkingBrakeReleaseButton:Releasesparking
brake.
•DeckHeightAdjustmentLever:Setscutting
heighttodesiredposition.
•DeckLiftPedal:Footpedalthatliftsdeck.
•TransportLock:
–Latchingposition:Automaticallylatchesat
thetransportposition.
–Unlatchingposition:Deckdoesnotlatchat
thetransportposition.
Seat
•Type:Standardseatwithhighback,extra
widefoampaddedseatcushionwithinternal
suspension,thickbolstering,armrests,integral
safetyswitch.
Optionalseataccessories:
–Customridesuspensionsystemtoenhance
StandardSeat.Addsapproximately3inches
(7.6cm)toseatheight.
–Deluxesuspensionseatwithhighback,low
prolefoam-in-placecushion(dampened,
adjustablespringsuspension),armrests,and
integralsafetyswitch.Seatheightremainsthe
same.
–SeatIsolationSystemforreducedvibration,
toenhancerideofstandardseat,standardseat
withCustomRideSeatSuspensionorDeluxe
SuspensionSeat.Addsapproximately1inch
(2.5cm)toseatheight.
•Mounting:Adjustableforeandaftonseattracks.
–Armrests:Foampaddedadjustableip-up
armrests.
–SeatSafetySwitch:Integratedseatswitch.
Timedelayseatswitcheliminatesrough
groundcut-outs.
HydrostaticGroundDriveSystem
•Twounitizedhydrostatictransmissions:
–12ccParkeraxialpistonpump
–240ccParkergerolermotor
•HydraulicOilType:ExmarkPremiumHydrooil.
•HydraulicOilCapacity:52oz(1.5L)perside
•HydraulicFilter:P/N116-0164
•Speeds:
–0-10mph(16.1km/hr)forward.
–0-5.5mph(8.9km/hr)reverse.
•Drivewheelreleasevalvesallowmachinetobe
movedwhenengineisnotrunning.
Tires&Wheels
DriveFrontCaster
Pneumatic(Air
lled)
Semi-Pneumatic
Quantity22
Tread“Multi-TracC/S”Smooth
Size24x12.00-1213x6.50-6
PlyRating4—
Pressure13psi(90kPa)—
CuttingDeck
•CuttingWidth:
–52inchDeck:(132.1cm)
–60inchDeck:(152.4cm)
–72inchDeck:(182.9cm)
•Discharge:Side
•BladeSize:(3ea.)
–52inchDeck:18.00inches(45.7cm)
–60inchDeck:20.50inches(52.1cm)
–72inchDeck:24.50inches(62.2cm)
•BladeSpindles:Solidsteelspindleswith1.00inch
(25mm)I.D.bearings.
•DeckDrive:
19

Specications
Electricclutch.Shaftdiameter1.125inches(2.86
cm)
5VSectionbeltwithself-tensioningidler.
•Deck:
Fulloatingdeckisattachedtoout-frontsupport
frame.Anti-scalprollersprovidemaximumturf
protection.Deckdesignallowsforbagging,
mulchingorsidedischarge.
–52inchDeck:3anti-scalprollers
–60inchDeck:4anti-scalprollers
–72inchDeck:6anti-scalprollers
•DeckDepth:
–52inchDeck:5.5inches(14cm)
–60inchDeck:5.5inches(14cm)
–72inchDeck:5.5inches(14cm)
•CuttingHeightAdjustment:
Footactivatedleverisusedtoadjustthecutting
heightfrom1inch(2.5cm)to51/2inches(14
cm)in1/4inch(6.4mm)increments.
•MulchingKit:Optional.
Dimensions
OverallWidth:
52inch
Deck
60inch
Deck
72inch
Deck
Without
Deck
45.7inches
(116.1cm)
53.0inches
(134.6cm)
59.1inches
(150.1cm)
Deector
Up
56.3inches
(143.0cm)
62.5inches
(158.8cm)
73.5inches
(186.7cm)
Deector
Down
64.8inches
(164.6cm)
72.8inches
(184.9cm)
84.9inches
(215.6cm)
OverallLength:
52inch
Deck
60inch
Deck
72inch
Deck
RollBar-
Up
79.2inches
(201.2cm)
83.1inches
(211.1cm)
86.1inches
(218.7cm)
RollBar-
Down
80.9inches
(205.5cm)
84.8inches
(215.4cm)
87.8inches
(223.0cm)
OverallHeight:
RollBar-UpRollBar-Down
70.5inches(179.1cm)46.8inches(118.9cm)
TreadWidth:(CentertoCenterof
Tires,Widthwise)
52inch
Deck
60inch
Deck
72inch
Deck
Drive
Wheels
38.5inches
(97.8cm)
41.6inches
(105.7cm)
43.6inches
(110.7cm)
Caster
Wheels
32.8inches
(83.3cm)
39.5inches
(100.3cm)
47.1inches
(119.6cm)
WheelBase:(CenterofCasterTireto
CenterofDriveTire)
52inchDeck60inchDeck72inchDeck
48.0inches(121.9
cm)
51.6inches(131.1
cm)
53.6inches(136.1
cm)
CurbWeight:
52inchDeck60inchDeck72inchDeck
1216lb(552kg)1283lb(582kg)1338lb(607kg)
AccessoryWeights:
Note:Thismachineisnotdesignedtoaccommodate
anUltraVacCollectionSystem.Duetothefront
weightsforthepropanesystem,theadditionalfront
weightsrequiredforanUltraVaccannotbeinstalled.
Theadditionalweightwouldcauseanexcessive
loadtotheframeandhydros;consequentlyvoiding
thewarranty.DoNotinstalloruseanUltraVac
CollectionSystemwiththismachine.
Allotheraccessoriesdonotsignicantlyaffectthe
stabilityofthemachine;therefore,noweightkitsare
required.
20