Exmark 850 User manual

Brand: Exmark

Model: 850

Category: Lawnmowers

Type: User manual

This manual is also suitable for

NA VIGATOR®

ForSerialNos.

850,000&Higher

PartNo.4500-628Rev.B

WARNING

CALIFORNIA

Proposition65Warning

Theengineexhaustfromthisproduct

containschemicalsknowntotheStateof

Californiatocausecancer,birthdefects,or

otherreproductiveharm.

Important:Theengineinthisproductisnot

equippedwithasparkarrestermufer.Itisa

violationofCaliforniaPublicResourceCode

(CPRC)Section4442touseoroperatethis

engineonanyforest-covered,brush-covered,or

grass-coveredlandasdenedinCPRC4126.

Otherstatesorfederalareasmayhavesimilar

laws.

ThissparkignitionsystemcomplieswithCanadian

ICES-002Cesystèmed’allumageparètincellede

vèhiculeestconformeàlanormeNMB-002du

Canada

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.

IndustrialParkBox808

Beatrice,NE68310

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.

Ifadditionalinformationisneeded,orshouldyou

requiretrainedmechanicservice,contactyour

authorizedExmarkequipmentdealerordistributor.

Exmarkpartsmanualsareavailableonlineat

http://www.exmark.com/manuals.htm.

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.

Contents

Introduction...........................................................3

Safety.....................................................................5

SafetyAlertSymbol.........................................5

SafeOperatingPractices..................................5

SafetyandInstructionalDecals.....................11

Specications.......................................................14

ModelNumbers............................................14

Systems.........................................................14

Dimensions...................................................15

TorqueRequirements....................................16

ProductOverview................................................16

Operation.............................................................17

Controls........................................................17

Pre-Start........................................................18

OperatingInstructions..................................18

Transporting.................................................20

Maintenance.........................................................22

RecommendedMaintenanceSchedule(s)...........22

PeriodicMaintenance.......................................23

CheckEngineOilLevel.................................23

CheckBatteryCharge....................................23

CheckSafetyInterlockSystem.......................24

CheckforLooseHardware............................25

ServiceAirCleaner........................................25

ChangeEngineOil........................................25

CheckHydraulicOilLevel.............................26

CheckTirePressures.....................................26

CheckConditionOfBelts..............................26

LubricateGreaseFittings...............................26

LubricateRearCasterWheelHubs.................27

LubricateBrakeHandlePivot........................28

LubricateBrakeRodBushings.......................28

LubricateSteeringLinkageRodEnds.............28

LubricateHopperActuator............................28

CheckSparkPlugs.........................................28

ChangeHydraulicSystemFilter.....................29

CheckWheelHubLocknuts..........................29

CheckWheelLugNuts..................................29

ThreadLockingAdhesives.............................29

DielectricGrease...........................................30

Adjustments.....................................................30

PTODriveBeltTension................................30

PumpDriveBeltTension...............................30

PTOBeltReplacement..................................30

PumpDriveBeltReplacement......................31

BeltGuideAdjustment..................................31

AdjustSafetySwitch......................................32

BrakeAdjustment..........................................32

AdjustSpeedControlLeverTension..............32

SpeedControlLinkageAdjustment................33

SteeringControlLeverResponse

Adjustment...............................................34

TrackingAdjustment.....................................35

PTODrivePulleyAlignment.........................35

PumpDrivePulleyAlignment........................35

RearCasterPivotBearingsPre-Load

Adjustment...............................................36

HopperDoorAdjustment.............................36

PTOBrakeSpringAdjustment......................36

Cleaning...........................................................37

CleanEngineandExhaustSystem

Area..........................................................37

RemoveEngineShroudsandCleanCooling

Fins...........................................................37

CleanDebrisFromMachine..........................37

WasteDisposal..............................................37

Troubleshooting...................................................38

Schematics...........................................................40

Safety

SafetyAlertSymbol

ThisSafetyAlertSymbol(Figure2)isusedbothin

thismanualandonthemachinetoidentifyimportant

safetymessageswhichmustbefollowedtoavoid

accidents

Thissymbolmeans:ATTENTION!BECOME

ALERT!YOURSAFETYISINVOLVED!

Figure2

1.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

•ReadtheOperator’sManualandothertraining

material.Iftheoperator(s)ormechanic(s)can

notreadEnglishitistheowner’sresponsibilityto

explainthismaterialtothem.

•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.

•Wearappropriateclothingincludingsafetyglasses,

substantialfootwear,longtrousers,andhearing

protection.DoNotoperatewhenbarefootor

whenwearingopensandals.Longhair,loose

clothingorjewelrymaygettangledinmoving

parts.

CAUTION

Thismachineproducessoundlevelsin

excessof85dBAattheoperator’searand

cancausehearinglossthroughextended

periodsofexposure.

Wearhearingprotectionwhenoperatingthis

machine.

•Inspecttheareawheretheequipmentistobe

usedandremoveallrocks,toys,sticks,wires,

bones,andotherforeignobjectswhichcanbe

thrownbythemachineandmaycausepersonal

injurytotheoperatororbystanders.

Safety

DANGER

Incertainconditionsgasolineisextremely

ammableandvaporsareexplosive.

Areorexplosionfromgasolinecanburn

you,others,andcausepropertydamage.

•Fillthefueltankoutdoorsonlevel

ground,inanopenarea,whentheengine

iscold.Wipeupanygasolinethatspills.

•Neverrellthefueltankordrainthe

machineindoorsorinsideanenclosed

trailer.

•DoNotllthefueltankcompletelyfull.

Fillthefueltanktothebottomoftheller

neck.Theemptyspaceinthetankallows

gasolinetoexpand.Overllingmayresult

infuelleakageordamagetotheengine

oremissionsystem(ifequipped).

•Neversmokewhenhandlinggasoline,

andstayawayfromanopenameor

wheregasolinefumesmaybeignitedby

spark.

•Storegasolineinanapprovedcontainer

andkeepitoutofthereachofchildren.

•Addfuelbeforestartingtheengine.

Neverremovethecapofthefueltankor

addfuelwhenengineisrunningorwhen

theengineishot.

•Iffuelisspilled,DoNotattempttostart

theengine.Moveawayfromtheareaof

thespillandavoidcreatinganysourceof

ignitionuntilfuelvaporshavedissipated.

•DoNotoperatewithoutentireexhaust

systeminplaceandinproperworking

condition.

DANGER

Incertainconditionsduringfueling,static

electricitycanbereleasedcausingaspark

whichcanignitegasolinevapors.Areor

explosionfromgasolinecanburnyouand

othersandcausepropertydamage.

•Alwaysplacegasolinecontainersonthe

groundawayfromyourvehiclebefore

lling.

•DoNotllgasolinecontainersinsidea

vehicleoronatruckortrailerbedbecause

interiorcarpetsorplastictruckbedliners

mayinsulatethecontainerandslowthe

lossofanystaticcharge.

•Whenpractical,removegas-powered

equipmentfromthetruckortrailerand

refueltheequipmentwithitswheelson

theground.

•Ifthisisnotpossible,thenrefuelsuch

equipmentonatruckortrailerfroma

portablecontainer,ratherthanfroma

gasolinedispensernozzle.

•Ifagasolinedispensernozzlemustbe

used,keepthenozzleincontactwiththe

rimofthefueltankorcontaineropening

atalltimesuntilfuelingiscomplete.

WARNING

Gasolineisharmfulorfatalifswallowed.

Long-termexposuretovaporshascaused

cancerinlaboratoryanimals.Failuretouse

cautionmaycauseseriousinjuryorillness.

•Avoidprolongedbreathingofvapors.

•Keepfaceawayfromnozzleandgas

tank/containeropening.

•Keepawayfromeyesandskin.

•Neversiphonbymouth.

Safety

•Checkthattheoperator’spresencecontrols,

safetyswitches,andshieldsareattachedand

functioningproperly.DoNotoperateunlessthey

arefunctioningproperly.

Operation

WARNING

Operatingengineparts,especiallythe

mufer,becomeextremelyhot.Severeburns

canoccuroncontactanddebris,suchas

leaves,grass,brush,etc.cancatchre.

•Allowengineparts,especiallythemufer,

tocoolbeforetouching.

•Removeaccumulateddebrisfrommufer

andenginearea.

•Installandmaintaininworkingordera

sparkarresterbeforeusingequipment

onforest-covered,grass-covered,or

brush-coveredunimprovedland.

WARNING

Engineexhaustcontainscarbonmonoxide,

whichisanodorlessdeadlypoisonthatcan

killyou.

DoNotrunengineindoorsorinasmall

connedareawheredangerouscarbon

monoxidefumescancollect.

WARNING

OperatingaNavigatortractorwithoutan

approvedExmarkfrontmountattachment

increasesthepossibilityofoperator

entanglementindrivewheelsorforwardtip

over.Entanglementortip-overcouldcause

seriousinjuryordeath.

WhenoperatingaNavigatortractor

withoutanapprovedExmarkfrontmount

attachment,observethefollowing:

•Keepfeetandclothingawayfromtires.

•Limitoperationtominimumrequiredto

installadifferentfrontmountattachment.

•Minimizespeedanduseextremecaution.

•Onlyoperateonaatlevelsurface.

•Donotoperateupordownatrailerramp.

•Avoidsuddenaccelerationordeceleration.

•Operateonlyindaylightorgoodarticiallight,

keepingawayfromholesandhiddenhazards.

•Besurealldrivesareinneutralandparkingbrake

isengagedbeforestartingengine.

•Neverraisedeckwithbladesrunning.

•Neveroperatethemowerwithdamagedguards,

shields,orcovers.Alwayshavesafetyshields,

guards,switchesandotherdevicesinplaceandin

properworkingcondition.

•Nevermowunlessthereisagrasscollection

systemormulchkitinplaceandworkingproperly.

•DoNotchangetheenginegovernorsettingor

overspeedtheengine.

•Stopengine,waitforallmovingpartstostop,

removekeyandengageparkingbrake:

–Beforechecking,cleaningorworkingonthe

mower.

–Afterstrikingaforeignobjectorabnormal

vibrationoccurs(inspectthemowerfor

damageandmakerepairsbeforerestarting

andoperatingthemower).

–Beforeclearingblockages.

–Wheneveryouleavethemower.

Safety

•Stopengine,waitforallmovingpartstostop,and

engageparkingbrake:

–Beforerefueling.

–Beforedumpingthegrasscatcher.

WARNING

Hands,feet,hair,clothing,oraccessoriescan

becomeentangledinrotatingparts.Contact

withtherotatingpartscancausetraumatic

amputationorseverelacerations.

•DoNotoperatethemachinewithout

guards,shields,andsafetydevicesin

placeandworkingproperly.

•Keephands,feet,hair,jewelry,orclothing

awayfromrotatingparts.

•NEVERcarrypassengers.DONOToperate

themowerwhenpeople,especiallychildren,or

petsareinthearea.

•Bealert,slowdownandusecautionwhenmaking

turns.Lookbehindandtothesidebefore

changingdirections.

•Stoptheblades,slowdown,andusecautionwhen

crossingsurfacesotherthangrassandwhen

transportingthemowertoandfromtheareato

bemowed.

•Beawareofthemowerdischargepathanddirect

dischargeawayfromothers.

•DoNotoperatethemowerundertheinuence

ofalcoholordrugs.

•Useextremecarewhenloadingorunloadingthe

machineintoatrailerortruck.

•Usecarewhenapproachingblindcorners,shrubs,

trees,orotherobjectsthatmayobscurevision.

SlopeOperation

UseExtremecautionwhenmowingand/orturning

onslopesaslossoftractionand/ortip-overcould

occur.Theoperatorisresponsibleforsafeoperation

onslopes.

DANGER

Operatingonwetgrassorsteepslopescan

causeslidingandlossofcontrol.Wheels

droppingoveredges,ditches,steepbanks,or

watercancauserollovers,whichmayresult

inseriousinjury,deathordrowning.

•DoNotmowslopeswhengrassiswet.

•DoNotmowneardrop-offsornearwater.

•DoNotmowslopesgreaterthan15

degrees.

•Reducespeedanduseextremecaution

onslopes.

•Avoidsuddenturnsorrapidspeed

changes.

•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.

Safety

•Avoidsuddenstartswhenmowingdownhill.

Mowermaytipforwards.

•Beawarethatoperatingonwetgrass,acrosssteep

slopesordownhillmaycausethemowertolose

traction.Lossoftractiontothedrivewheelsmay

resultinslidingandalossofbrakingandsteering.

•Alwaysavoidsuddenstartingorstoppingona

slope.Iftireslosetraction,disengagetheblades

andproceedslowlyofftheslope.

•Followthemanufacturer’srecommendationsfor

wheelweightsorcounterweightstoimprove

stability.

•Useextremecarewithattachments.Thesecan

changethestabilityofthemachineandcauseloss

ofcontrol.

Note:A2–postfoldableROPS(RolloverProtection

System)isavailablefortheNavigatorasanaccessory.

AROPSisrecommendedifyouwillbemowing

nexttodrop-offs,nearwater,oronsteepbanks

whichcouldresultinarollover.Themodelnumber

fortheROPSattachmentisFRPSNA V .Contactan

AuthorizedExmarkServiceDealerformoredetails.

MaintenanceandStorage

•Disengagedrives,lowerimplement,setparking

brake,stopengineandremovekeyordisconnect

sparkplugwire.Waitforallmovementtostop

beforeadjusting,cleaningorrepairing.

•Keepengine,enginearea,andpumpdrivebelt

compartmentfreefromaccumulationofgrass,

leaves,excessivegreaseoroil,andotherdebris

whichcanaccumulateintheseareas.These

materialscanbecomecombustibleandmayresult

inare.

•Letenginecoolbeforestoringanddonotstore

nearameoranyenclosedareawhereopenpilot

lightsorheatappliancesarepresent.

•Shutofffuelwhilestoringortransporting.Do

Notstorefuelnearamesordrainindoors.

•Parkmachineonlevelground.Neverallow

untrainedpersonneltoservicemachine.

•Usejackstandstosupportcomponentswhen

required.

•Carefullyreleasepressurefromcomponentswith

storedenergy.

•Disconnectbatteryorremovesparkplugwire

beforemakinganyrepairs.Disconnectthe

negativeterminalrstandthepositivelast.

Reconnectpositiverstandnegativelast.

•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.

Safety

CAUTION

Iftheignitionisinthe“ON”positionthere

ispotentialforsparksandengagement

ofcomponents.Sparkscouldcausean

explosionormovingpartscouldaccidentally

engagecausingpersonalinjury

Besureignitionswitchisinthe“OFF”

positionbeforechargingthebattery.

•Keepallguards,shieldsandallsafetydevicesin

placeandinsafeworkingcondition.

•Checkallboltsfrequentlytomaintainproper

tightness.

•Frequentlycheckforwornordeteriorating

componentsthatcouldcreateahazard.

WARNING

Removingstandardoriginalequipment

parts,orusingnon-Exmarkreplacement

partsandaccessoriesmayalterthewarranty,

traction,andsafetyofthemachine.Failure

touseoriginalExmarkpartscouldcause

seriousinjuryordeath.

Replaceallpartsincluding,butnotlimited

to,tires,belts,andbladeswithoriginal

Exmarkparts.

WARNING

Hydraulicuidescapingunderpressure

canpenetrateskinandcauseinjury.Fluid

accidentallyinjectedintotheskinmustbe

surgicallyremovedwithinafewhoursbya

doctorfamiliarwiththisformofinjuryor

gangrenemayresult.

•Makesureallhydraulicuidhoses

andlinesareingoodconditionand

allhydraulicconnectionsandttings

aretightbeforeapplyingpressureto

hydraulicsystem.

•Keepbodyandhandsawayfrompinhole

leaksornozzlesthatejecthighpressure

hydraulicuid.

•Usecardboardorpaper,notyourhands,

tondhydraulicleaks.

•Safelyrelieveallpressureinthehydraulic

systembyplacingthemotioncontrol

leversinneutralandshuttingoffthe

enginebeforeperforminganyworkon

thehydraulicsystem.

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.

1-513747

65-2690

98-4361

98-5954

103-8425

103-8444

103-8451

103-8495

103-8611

Safety

103-9034

103-9724

109-4273

109-4638

109-7318

116-0404

Safety

116-1175

117–2718

MoldedinLHConsole

MoldedintoFrontofHopper

Specications

ModelNumbers

SerialNos:850,000andHigher

NAV20KC;NA V27KC

Systems

Engine

•EngineSpecications:SeeyourEngineOwner’s

Manual

•RPM:FullSpeed:3600±50RPM(NoLoad)

Idle:1500RPM

FuelSystem

•Capacity:7.5gal.(28L)

•TypeofFuel:Regularunleadedgasoline,87

octaneorhigher;containingnomorethan10%

methanolorethanol.

•FuelFilter:In-line30MicronKohlerP/N

2405010.

•FuelShut-OffValve:1/4turnincrementsin-line

valvebyfuellter.

ElectricalSystem

•ChargingSystem:FlywheelAlternator

•ChargingCapacity:15amps

•BatteryType:BCIGroupU1

•BatteryVoltage:12Volt

•Polarity:NegativeGround

•Fuses:Two20ampandone30ampbladetype

•SafetyInterlockSystem:

–PTOmustbedisengaged,brakeengaged,and

speedcontrolleverinneutralpositiontostart

engine.(Itisnotnecessaryfortheoperatorto

beintheseattostarttheengine.)

–OperatormustbeinseatwhenPTOis

engaged,brakeisdisengaged,orspeedcontrol

leverismovedoutofneutralorenginewill

stop.

–Enginewillstopinthefollowingconditions:

◊Ifthespeedcontrolleverismovedfrom

neutralpositionwhilebrakeisengaged.

◊IfthePTOisengagedwhilethehopper

istiltedup.

OperatorControls

•SteeringandMotionControl:

–SpeedControllever,locatedonRHconsole,

setsmaximumforwardspeed.

–Steeringlevers,centeredinfrontoftheseat,

controlthespeedanddirectionoftravelof

therespectivedrivewheels.

–Movingspeedcontrolleverrearwardtothe

neutralpositionplacesthedrivesystemin

neutral.

Note:Theunitmaybemovedinreverse

whilethespeedcontrolisintheneutral

positionbypullingbackonthesteeringlevers.

•PTOEngagementLever:EngagesdrivetoPTO

(mowerdeck)andblower.

•ParkingBrakeLever:Pullbacktoengageparking

brake.

Seat

•Type:Standardseatwithhighback,foampadded

(internalsuspension).

•Mounting:Seatishingedtotiltupforaccessto

hydraulicpumpsandothercomponents.Theseat

isheldinthetiltedpositionwithalink.

•Armrests:None.

•SeatSafetySwitch:Internaltothebottomseat

cushion,nonserviceable.Timedelaymodule

incorporatedintotheSafetyInterlockSystem

eliminatesroughgroundcut-outs.

HydrostaticGroundDriveSystem

•HydrostaticPumps:TwoHydroGearvariable

displacementpistonpumps.

•WheelMotors:HydroGearplanetaryreduction

motors.

Specications

•HydraulicOilType:UseExmarkPremiumHydro

oil.

•HydraulicOilCapacity:4.0qt.(3.8L)

•HydraulicFilter:Replaceablecartridgetype.

–Summeruseabove32°F(0°C):

P/N109-0071:25microns,10psibypass

–Winterusebelow32°F(0°C):

P/N1-523541:40microns,18psibypass

•Speeds:

–0-7.0mph(11.3km/hr)forward.

–0-5.5mph(8.6km/hr)reverse.

•Drivewheelreleasevalvesallowmachinetobe

movedwhenengineisnotrunning.

Tires&Wheels

Drive

Front

Caster

RearCaster

Pneumatic

(Air-Filled)

Semi-

Pneumatic

Semi-

Pneumatic

Quantity

221

Tread

“Multi-Trac

C/S”

SmoothSmooth

Size

18x

10.50-10

8x3.00-413x8.00-6

PlyRating

Pressure

15psi(103

kPa)

CuttingDeck

(Soldseparately)

•ModelNumbers:

–CD42CD

–CD48CD

•CuttingWidth:

–42inchDeck:42inch(106.7cm)

–48inchDeck:48inch(121.9cm)

•Discharge:Center

•BladeSize:(2ea.)

–w/42inchDeck:22.00inches(55.9cm)

–w/48inchDeck:25.00inches(63.5cm)

•DeckDrive:

–Clutchingbeltonhorizontalengineshaft.

Dual“A ”sectionhexagonbeltwithspring

tensionedidlertojackshaftandblower.

–Heavy-dutycastiron,spiralbevelgearboxis

naldrivetoblades.

•Deck:

Fulloatingdeckisattachedtoout-frontsupport

frame.Deckdesignallowsforbaggingor

mulching.

•DeckDepth:

–42inchDeck:45/8inches(11.7cm)

–48inchDeck:45/8inches(11.7cm)

Dimensions

OverallWidth:

WithoutDeck42inchDeck48inchDeck

42.6inches

(108.2cm)

43.2inches

(109.7cm)

49.2inches

(125.0cm)

OverallLength:

WithoutDeck42inchDeck48inchDeck

67.3inches

(170.9cm)

91.8inches

(233.2cm)

94.5inches

(240.0cm)

OverallHeight:

WithoutDeck42inchDeck48inchDeck

51.2inches

(130.0cm)

51.2inches

(130.0cm)

51.2inches

(130.0cm)

TreadWidth:(CentertoCenterof

Tires,Widthwise)

42inchDeck48inchDeck

DriveWheels32.7inches

(83.1cm)

32.7inches

(83.1cm)

WheelBase:(CenterofDriveWheel

toCenterofRearCasterWheel)

42inchDeck48inchDeck

44.2inches(112.3cm)44.2inches(112.3cm)

ProductOverview

CurbWeight:

42inchDeck48inchDeck

850lb(386kg)1145lb(519kg)

TorqueRequirements

BoltLocation

Torque

BladeMountingBolt85-110ft-lb(115-149N-m)

EngineMountingBolts

30-35ft-lb(41-47N-m)

WheelLugNuts

90-95ft-lb(122-129N-m)

WheelMotorMounting

Bolts

72-77ft-lb(98-104N-m)

WheelHubLocknut210-250ft-lb

(285-339N-m)

ProductOverview

Figure4

1.SpeedControlLever4.SteeringLevers

2.Controls5.PTOEngagementLever

3.FuelCap

6.ParkingBrakeLever

Operation

Note:Determinetheleftandrightsidesofthe

machinefromthenormaloperatingposition.

Controls

SteeringLevers

Locatedinthecenterinfrontoftheseat.

Pullingbackonthesteeringlevers,progressively

slows,thenreversesthedirectionoftravelofthe

respectivedrivewheels.

Bymovingbothsteeringleversanequalamountback,

themachinecanbesloweddownortravelbackward

inastraightline.

Steeringiscontrolledbyvaryingthepositionofthe

steeringleversrelativetoeachother.

SpeedControlLever

Locatedonrighthandconsole.

Thespeedcontrolleversetsmaximumforwardspeed.

Movingspeedcontrolleverrearwardtotheneutral

positionplacesthedrivesysteminneutral.

ChokeControl

Locatedonrighthandconsole.

Thechokeisusedtoaidinstartingacoldengine.

Movingthechokeleverforwardwillputthechokein

the“ON”positionandmovingthechokelevertothe

rearwillputthechokeinthe“OFF”position.DO

NOTrunawarmenginewithchokeinthe“ON”

position.

ThrottleControl

Locatedonrighthandconsole.

Thethrottleisusedtocontrolenginespeed.Moving

throttleleverforwardwillincreaseenginespeedand

movingthrottlelevertotherearwilldecreaseengine

speed.

BrakeLever

Locatedonleftsideofunit,betweentheseatand

console.

Thebrakeleverengagesaparkingbrakeonthedrive

wheels.

Pulltheleverupandrearwardtoengagethebrake.

Pushtheleverforwardanddowntodisengagethe

brake.

Theunitmustbetieddownandbrakeengagedwhen

transporting.

IgnitionSwitch

Locatedontherighthandconsole.

Theignitionswitchisusedtostartandstopthe

engine.Theswitchhasthreepositions“OFF”,“ON”

and“START”.Insertkeyintoswitchandrotate

clockwisetothe“ON”position.Rotateclockwiseto

thenextpositiontoengagethestarter(keymustbe

heldagainstspringpressureinthisposition).

Note:Brakemustbeengaged,speedcontrollever

rearward(neutralposition)andPTOdisengagedto

startengine.(Itisnotnecessaryfortheoperatorto

beintheseattostarttheengine.)

HourMeter

Locatedontherighthandconsole.

Thehourmeterisconnectedtoapressureswitch

installedintheengineblockanditrecordsthe

numberofhoursthattheenginehasrun.Ifthe

ignitionswitchisleftonwithoutenginerunning,

hourmeterwillnotrun.

Note:Thisswitchisnotalowoilsensorandwillnot

alerttheoperatoriftheengineoilislow .

FuelShut-OffValve

Locatedinfuellinebyfueltankandfuellter

(accessiblebyraisingthehopper).

Thefuelshut-offvalveisusedtoshutoffthefuel

whenthemachinewillnotbeusedforafewdays,

duringtransporttoandfromthejobsite,andwhen

parkedinsideabuilding.

Rotatethevalve1/4turnclockwisetoshutoffthe

fuel.rotatethevalve1/4turncounterclockwiseto

turnonthefuel.

Operation

DriveWheelReleaseValves

Locatedonthetopleftfrontcornerofhydrostatic

pumps.

Drivewheelreleasevalvesareusedtoreleasethe

hydrostaticdrivesystemtoallowthemachinetobe

pushedwithouttheenginerunning.Tiltseatupto

gainaccesstopumps.

Witha7/16wrench,turnbothvalvesoneturn

counterclockwisetoreleasedrivesystem.Turn

clockwisetoresetsystem.DoNotovertighten.Do

Nottowmachine.

TrackingAdjustmentKnob

Locatedundertheseatontheleftpumpcontrollink.

Rotatingthisknoballowsnetuningadjustmentsso

thatthemachinetracksstraightwiththedrivelevers

inthefullforwardposition.

Rununitat3/4speedforatleast5minutesto

bringhydraulicoiluptooperatingtemperature.

Stopmachineandwaitforallmovingpartstostop.

Engageparkbrake.Tiltseatforwardtogainaccess

tothetrackingknob.Rotatetheknobtowardsthe

righttosteerrightandrotatetowardstheleftto

steerleft.Adjustin1/8turnincrementsuntilthe

machinetracksstraight.Checkthatthemachine

doesnotcreepwheninneutralwiththeparkbrakes

disengaged.

Important:DoNotrotatetheknobtoofar,as

thismaycausethemachinetocreepinneutral.

RefertotheMotionControlLinkageAdjustment

sectioninMaintenance.

PTOEngagementLever

Locatedimmediatelyleftoftheleftconsole.

Levermustbemoveduptothe“ROTATE”position

toengagethePTOandblowerdrives.Leverismoved

downtothe“STOP”positiontostopthedrives.

EngineOilTemperatureLightand

Buzzer

Locatedontherightconsole.

Theengineoiltemperaturelightmonitorsthe

temperatureoftheengineoil.Anilluminatedengine

oiltemperaturelightandintermittentbuzzingsound

signalstheengineisoverheating.

Pre-Start

Fillfueltanks.Forbestresultsuseonlyclean,fresh

regulargradeunleadedgasolinewithanoctanerating

of87orhigher.

Important:Neverusemethanol,gasoline

containingmethanol,gasoholcontainingmore

than10%ethanol,premiumgasoline,orwhite

gasbecausethefuelsystemcouldbedamaged.

DoNotaddoiltogasoline.

DoNotoverllfueltank.Fillthefueltanktothe

bottomofthellerneck.Theemptyspaceinthe

tankallowsgasolinetoexpand.Overllingmayresult

infuelleakageordamagetotheengineoremission

system(ifequipped).

Makesureyouunderstandthecontrols,their

locations,theirfunctions,andtheirsafety

requirements.

RefertotheMaintenancesectionandperformallthe

necessaryinspectionandmaintenancesteps.

OperatingInstructions

OpentheFuelShut-OffValve

Thefuelshut-offvalveislocatedontherightsideof

unitinfuellinenexttothefuellter.Raisethehopper

toaccess.Rotatethevalve1/4counterclockwiseto

turnonfuel.

StartingtheEngine

1.Movethespeedcontrollevertotheneutral

position.

2.Pullupandbackontheparkingbrakeleverto

engagetheparkingbrake.

3.PushthePTOengagementleverdowntothe

“STOP”position.

Note:Itisnotnecessaryfortheoperatortobe

intheseattostarttheengine.

4.Placethethrottlemidwaybetweenthe“SLOW”

and“FAST”positions.

5.Onacoldengine,pushthechokeleverforward

intothe“ON”position.

Onawarmengine,leavethechokeinthe“OFF”

position.

Operation

6.Turnignitionswitchtothe“START”position.

Releasetheswitchassoonastheenginestarts.

Important:DoNotcranktheengine

continuouslyformorethantensecondsata

time.Iftheenginedoesnotstart,allowa60

secondcool-downperiodbetweenstarting

attempts.Failuretofollowtheseguidelines

canburnoutthestartermotor.

7.Ifthechokeisinthe“ON”position,gradually

returnchoketothe“OFF”positionastheengine

warmsup.

EngagingthePTO

DANGER

Therotatingbladesunderthemowerdeck

aredangerous.Bladecontactcancause

seriousinjuryorkillyou.

DoNotputhandsorfeetunderthemower

ormowerdeckwhenthebladesareengaged.

DANGER

Anuncovereddischargeopeningwillallow

objectstobethrowninanoperator’sor

bystander’sdirection.Also,contactwiththe

blowerbladescouldoccur.Thrownobjects

orbladecontactcancauseseriousinjuryor

death.

Neveroperatethemowerwiththehopper

orhopperdoorraised,removed,oraltered

unlessthereisamulchkitinplaceand

workingproperly.

ThePTOleverengagesthePTOandblower.Besure

thatthehopperisdown,thehopperdoorissecurely

closed,andallpersonsareclearofthemowerdeck

anddischargeareabeforeengagingPTO.

Important:Operatormustbeinseatbeforethe

PTOcanbeengaged.

1.Setthethrottletothe“MIDWAY”position.

2.PullthePTOleverupwarduntillockedover

center.

3.Placethethrottleinthe“FAST”positiontobegin

mowing.

DisengagingthePTO

1.Setthethrottletothe“MIDWAY”position.

2.PushPTOleverdowntothe“STOP”position

stoppingthePTOandblower.

StoppingtheEngine

1.Bringtheunittoafullstop.

2.DisengagethePTO.

3.Movespeedcontrollevertotheneutralposition.

4.Engagetheparkingbrake.

5.Placethethrottlemidwaybetweenthe“SLOW”

and“FAST”positions.

6.Allowtheenginetorunforaminimumof15

seconds,thenturntheignitionswitchtothe

“OFF”positiontostoptheengine.

7.Removethekeytopreventchildrenorother

unauthorizedpersonsfromstartingengine.

8.Closethefuelshut-offvalvewhenthemachine

willnotbeinuseforafewdays,when

transporting,orwhentheunitisparkedinside

abuilding.

DrivingtheMachine

CAUTION

Machinecanspinveryrapidlybypositioning

onelevertoomuchaheadoftheother.

Operatormaylosecontrolofthemachine,

whichmaycausedamagetothemachine

orinjury.

•Usecautionwhenmakingturns.

•Slowthemachinedownbeforemaking

sharpturns.

Important:Tobeginmovement(forwardor

backward)theoperatormustbeintheseat,the

brakelevermustbedisengaged(pusheddown)

beforethespeedcontrollevercanbemoved

forwardortheenginewillstop.

DrivingForward

1.Starttheengine.

2.Releasetheparkingbrake.

3.Tomoveforwardinastraightlinemovethespeed

controlleverforward.

Operation

Toturnleftorright,pulloneofthesteeringlevers

backtowardneutralinthedirectiondesired.

Themachinewillmovefasterthefartherthe

speedcontrolleverismovedawayfromneutral.

4.Tostop,pullthespeedcontrolleverbacktothe

neutralposition.

DrivinginReverse

1.Tomoverearwardinastraightlineapplyingequal

pressurepullbothsteeringleversrearward.

Toturnleftorright,releasepressureonthe

steeringlevertowardthedirectiondesired.

2.Tostop,releasethesteeringleverstotheneutral

position.

EmptyingHopper

1.Afullhopperisindicatedbyabuzzerlocated

behindtheoperatorinthehopper.Emptyhopper

whenbuzzersoundstopreventcloggingofthe

blowerordeck.

2.DisengagePTO,movespeedcontroltoneutral,

setparkbrakeanddismountunittodumphopper.

3.Makesureunitisonadrylevelsurface.

4.Liftthereardoorupandallowittorestontop

ofhopper.

5.Dumphopperbyrmlygraspingoneofthe

hopperhandlesoneithersideoftheunitand

liftingthehopper.

ClearingHopperScreen

Screenmayberemovedbyrmlyliftingscreen

handles(seeFigure5).

Pullscreentowardsthebacktoremove.Gentlytap

debrisfromthescreenasneeded.

Excessivebuild-uponthescreencancausethe

blowertoplug.

Note:Inconditionswherethescreenclogsquickly,

thefrontremovablescreenpanelcanbeturnedand

reinstalledundertheprimaryscreentoallowfreeair

owfromthehopper.

Figure5

1.Frontremovablescreen

canberotatedand

storedforwetcondtions

3.Primaryscreen

2.Frontremovablescreen4.Handles.

Transporting

TransportingaUnit

Useaheavy-dutytrailerortrucktotransportthe

machine.Lockbrakeandblockwheels.Securely

fastenthemachinetothetrailerortruckwithstraps,

chains,cable,orropes.Besurethatthetrailerortruck

hasallnecessarylightingandmarkingasrequiredby

law .Secureatrailerwithasafetychain.

CAUTION

Thisunitdoesnothaveproperturn

signals,lights,reectivemarkings,ora

slowmovingvehicleemblem.Drivingona

streetorroadwaywithoutsuchequipment

isdangerousandcanleadtoaccidents

causingpersonalinjury.Drivingonastreet

orroadwaywithoutsuchequipmentmayalso

beaviolationofStatelawsandtheoperator

maybesubjecttotrafcticketsand/ornes.

DoNotdriveaunitonapublicstreetor

roadway.

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Exmark 850 User manual

Brand: Exmark

Model: 850

Category: Lawnmowers

Type: User manual

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