MTD 12A 446B729 User Manual LAWN MOWER Manuals And Guides L0908644
MTD Walk Behind Lawnmower, Gas Manual L0908644 MTD Walk Behind Lawnmower, Gas Owner's Manual, MTD Walk Behind Lawnmower, Gas installation guides
User Manual: MTD 12A-446B729 12A-446B729 MTD LAWN MOWER - Manuals and Guides View the owners manual for your MTD LAWN MOWER #12A446B729. Home:Lawn & Garden Parts:MTD Parts:MTD LAWN MOWER Manual
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Safety • Assembly • Operation • Tips & Techniques • Maintenance • Troubleshooting • Parts Lists • Warranty OF A O AL 21" Rotary Mower- Model 446 iMPORTANT READ SAFETY RULES AND iNSTRUCTiONS CAREFULLY BEFORE OPERATION Warning: This unit is equippedwith an internalcombustionengineand shouldnot be usedon or nearany unimprovedforest-covered,brushcoveredor grass-coveredland unlesstheengine'sexhaustsystemis equippedwith a sparkarrestermeetingapplicablelocalor statelaws(if any). If a sparkarresteris used,it shouldbe maintainedin effectiveworkingorder by the operator.In theState of Californiathe aboveis requiredbylaw (Section4442 of the CaliforniaPublicResourcesCode). Otherstatesmay havesimilarlaws.Federallaws applyon federallands.A sparkarrester for the muffleris availablethroughyour nearestengineauthorizedservicedealeror contactthe servicedepartment,RO. Box361131Cleveland, Ohio 44136-0019. PRINTEDIN U.S.A. MTD LLC, P.O. BOX 361131 CLEVELAND, OHIO 44136-0019 FORMNO.769-01471A 12/14/2005 This Operator's Manual is an important part of your new lawn mower, it will help you assemble, prepare and maintain the unit for best performance. Please read and understand what it says. Table of Contents Slope Gauge ....................................................... Safe Operation Practices ................................... Setup and Adjustment ....................................... Operating Your Lawn Mower .............................. 3 4 6 8 Maintaining Your Lawn Mower ......................... Trouble Shooting .............................................. Off-Season Storage and Safety Labels .......... Parts List ........................................................... 10 12 13 14 Finding and Recording Model Number f BEFOREYOU START ASSEMBLING YOUR NEW EQUIPMENT, please locate the model plate on the equipment and copy the information to the sample model plate provided to the right. You can locate the model plate by standing at the operating position and looking down at the rear of the deck. This information will be necessary to use the manufacturer's web site and/or obtain assistancefrom the Customer Support Department or an authorized service dealer. Model Number Serial Number MTD LLC P.O. BOX 361131 CLEVELAND, OH 44136 330-220-4683 800=800=7310 www.mtdproducts.com Customer Support Please do NOTreturn purchased, without the unit to the retailer from which first contacting Customer it was Support. If you have difficulty assembling this product or have any questions regardingthe controls, operation,or maintenanceof this unit, you can seek help from the experts. Choose from the options below: 1. Visit mtdproducts.com. Support menu option. Click on the Customer 3. The engine manufacturer is responsiblefor all enginerelated issueswith regards to performance, power-rating, specifications, warranty and service. Please refer to the engine manufacturer'sOwner's/Operator's Manual, packed separatelywith your unit, for more information. 2. Phone a Customer Support Representative at (800) 800-7310. l_ 2 _!!_!i_i!_ 1 Usethispageasa guidetodetermine slopeswhereyoumaynotoperatesafely.Donotoperate yourlawnmoweronsuchslopes. ! i! I ! i i iii_i ii_ _ :iii WARNING Do not mow on inclines with a slope in excess of 15 degrees (a rise of approximately 2-1/2 feet every 10 feet). A riding mower could overturn and cause serious injury. If operating a walkbehind mower on such a slope, it is extremely difficult to maintain your footing and you could slip, resulting in serious injury. Operate RIDING mowers up and down slopes, neveracross the face d slopes. Operate WALK-BEHIND mowers across the face of slopes, never up and down slopes. 3 WARNING: Engine Exhaust, some of its constituents, and certain vehicle components contain or emit chemicals known to State of Californiato cause cancer and birth defects or other reproductiveharm. DANGER: This machine was built to be operated according to the rules for safe operation in this manual. As with any type of power equipment, carelessness or error on the part of the operator can result in serious injury. This machine is capable of amputating hands and feet and throwing objects. Failureto observe the following safety instructions could result in serious injury or death. Children 6. Alwayswearsafetyglasses or safetygogglesduringoperation andwhile performingan adjustmentor repairto protect youreyes. Thrownobjectswhich ricochetcan causeserious injury to the eyes. Tragicaccidentscan occur if operatoris not alert to presence of children.Childrenare oftenattractedto mowerand mowing activity.Theydo not understandthe dangers.Neverassume thatchildrenwill remainwhereyou lastsawthem. 1. Keepchildrenout of the mowingareaand underwatchful careof a responsibleadultotherthanthe operator. 2. Be alert andturn moweroff if a childentersthe area. 7. Wearsturdy, rough-soledworkshoesand close-fitting slacksandshirts. Shirtsand pantsthatcoverthe arms and legs andsteel-toedshoesare recommended.Neveroperate this machinein bare feet,sandals, slipperyor lightweight (e.g. canvas)shoes. 8. Do not put hands or feet near rotatingparts or undercutting deck. Contactwithblade can amputatehands andfeet. 3. Beforeand whilemovingbackwards,look behindanddown forsmallchildren. RNING This symbol points i out important safety instructionswhich, if not followed, could endangerthe personal i safety and/or property I of yourself and others. Read and follow all instructions in this manual before attempting to operate this machine. Failureto comply with these instructions may i result in personal injury. i When you see this _ symbol. HEED ITS WARNING Your Responsibility Restrict the use i of this power machine i to personswho read, understand and follow the warnings and instructions in this manual and on the machine. 4. Useextremecare when approachingblind corners, doorways,shrubs,trees,or otherobjectsthat may obscure yourvisionof a child whomay run intothe mower. 5. Keepchildrenawayfrom hot or runningengines.Theycan sufferburnsfrom a hot muffler. 9. A missingor damageddischargecovercan cause blade contactor thrownobject injuries. 10. Manyinjuriesoccuras a resultof the mowerbeing pulled overthe foot duringa fall causedby slippingor tripping. Do not hold on to the mower if you are falling; releasethe handle immediately. 6. Neverallowchildrenunder14 yearsoldto operatea power mower.Children14 yearsoldand overshouldreadand understandoperationinstructionsandsafetyrulesinthis manualandshouldbe trainedandsupervisedbya parent. General 11. Neverpullthe mowerback towardyou whileyou are walking.If you must backthe mowerawayfrom a wall or obstructionfirst look down and behindto avoid trippingand thenfollowthese steps: a. Stepback from mowerto fully extend yourarms. Operation 1. Readthis operator'smanualcarefullyin its entiretybefore attemptingto assemblethis machine.Read,understand, andfollowall instructionson the machineandin the b. Be sure youare well balancedwithsurefooting. c. Pullthe mowerback slowly,no morethan half way toward you. manual(s)beforeoperation.Be completelyfamiliar with the controls andthe proper useof this machinebefore operatingit. Keepthis manualin a safe place forfuture and regularreferenceand for orderingreplacementparts. 2. This machineis a precision pieceof powerequipment, not a plaything.Therefore,exerciseextremecautionat all times.Yourunit has beendesignedto performonejob: to mowgrass. Do not use it for any otherpurpose. d. Repeatthesesteps as needed. 12. Do not operatethe mowerwhileunderthe influenceof alcoholor drugs. 3. Neverallow childrenunder 14yearsold to operatethis machine.Children 14yearsold and overshould readand understandthe instructionsinthis manualandshould be trainedand supervisedby a parent.Onlyresponsible individualswho arefamiliar withthese rulesof safe operationshould be allowedto usethis machine. 4. Thoroughlyinspectthe area wherethe equipmentis to be used. Removeall stones,sticks,wire, bones,toys and otherforeignobjectswhichcould be tripped overor picked up andthrown by the blade.Thrownobjectscan cause seriouspersonalinjury.Plan yourmowingpatternto avoid dischargeof materialtoward roads,sidewalks,bystanders andthe like.Also, avoiddischargingmaterialagainsta wall or obstructionwhich may causedischargedmaterial to ricochet backtoward the operator. 5. Tohelp avoid bladecontact or a thrown objectinjury, stay inoperatorzone behindhandlesand keepchildren, bystanders,helpers,and pets at least75 feet from mower whileit is inoperation.Stop machineif anyoneenters area. 13. Do not engage the self-propelledmechanismon units so equippedwhilestartingengine. 14. The bladecontrol handle is a safetydevice.Neverattempt to bypassits operation.Doingso makesthe safetydevice inoperativeandmay result in personalinjurythrough contactwiththe rotatingblade. The bladecontrol handle mustoperateeasily in bothdirectionsandautomatically returnto the disengagedpositionwhen released. 15. Neveroperate the mowerinwet grass. Alwaysbe sure of yourfooting. A slip and fall can causeseriouspersonal injury.If you feel you are losing yourfooting,releasethe bladecontrol handle immediatelyand the bladewill stop rotatingwithinthreeseconds. 16. Mowonly in daylightor good artificial light. Walk,never run. 17. Stopthe bladewhen crossinggraveldrives, walksor roads. 18. If the equipmentshouldstartto vibrateabnormally,stop the engineand check immediatelyfor the cause.Vibrationis generallya warningof trouble. 19. Shutthe engineoff andwait untilthe bladecomesto a completestop beforeremovingthe grasscatcheror unclogging the chute. 4 The cuttingbladecontinuesto rotatefor a fewseconds after the engine is shut off. Neverplaceany part of the bodyin the bladearea untilyou are surethe blade hasstopped rotating. 7. Extinguishall cigarettes,cigars, pipesand othersources of ignition. 8. Neverfuel machineindoorsbecauseflammablevapors will accumulatein the area. 20. Neveroperate mowerwithoutpropertrailshield, discharge cover,grass catcher,bladecontrol handle,or othersafety protectivedevices in placeand working.Neveroperate mowerwithdamagedsafetydevices.Failureto do so can resultin personalinjury. 21. Mufflerandengine becomehot andcan causea burn.Do not touch. 9. Neverremovegas cap or add fuel whileengine is hot or running. Allow engineto cool at least two minutesbefore refueling. 10. Neveroverfill fuel tank. Filltank to no morethan Y2inch below bottomof filler neckto providefor fuel expansion. 11. Replacegasoline cap andtighten securely. 12. If gasolineis spilled,wipe it off the engine and equipment. Moveunit to another area.Wait 5 minutesbeforestarting engine. 13. Neverstorethe machineor fuel containernear an open flame,sparkor pilot light as on a water heater,space heater,furnace, clothesdryer,or othergas appliances. 22. Only use parts and accessoriesmadefor this machineby manufacturer.Failureto do so can result inpersonalinjury. 23. If situationsoccurwhich are not coveredin this manual, use careand goodjudgment. Contactyourdealerfor assistance.Telephone1-800-800-7310for the name of your nearestdealer. Practices 14. Toreducefire hazard,keepmowerfree of grass, leaves, or other debrisbuild-up.Clean up oil or fuel spillage and removeany fuel soakeddebris. 15. Allow a mowerto cool at least5 minutesbeforestoring. Slope Operation Slopesare a majorfactor relatedto slip andfallaccidentswhich can resultinsevereinjury.Operationon slopes requiresextra caution.If you feel uneasyon a slope,do not mow it.For your safety,usethe slope gaugeincludedas part of this manualto measureslopes beforeoperatingthis unit on a slopedor hilly area.If the slope is greaterthan 15degrees,do not mowit. General Service: 1. Neverrun an engine indoorsor in a poorlyventilatedarea. Engineexhaustcontainscarbonmonoxide,an odorlessand deadlygas. 2. Beforecleaning,repairing,or inspecting,makecertainthe bladeandall movingparts havestopped.Disconnectthe sparkplug wire andgroundagainstthe engineto prevent unintendedstarting. 3. Checkthe bladeandengine mountingbolts atfrequent intervalsfor propertightness.Also,visuallyinspectbladefor damage(e.g.,bent,cracked,worn) Replacebladewiththe originalequipmentmanufacture's(O.E.M.)bladeonly,listed inthis manual."Use of partswhichdo not meetthe original equipmentspecificationsmay leadto improperperformance andcompromisesafety!" 4. Mowerbladesare sharp andcan cut.Wrap the bladeor wear gloves,anduse extracautionwhen servicingthem. 5. Keepall nuts,bolts, andscrewstight to be surethe equipmentis insafe workingcondition. 6. Nevertamperwithsafetydevices.Checktheir proper operation regularly. 7. Afterstrikinga foreignobject,stop the engine,disconnect the sparkplug wire andgroundagainstthe engine. Thoroughlyinspectthe mowerfor any damage.Repairthe damagebeforestartingandoperatingthe mower. Do: 1. Mowacrossthe face of slopes; neverup anddown. Exerciseextremecaution when changingdirectionon slopes. 2. Watchfor holes,ruts,rocks, hiddenobjects,or bumpswhich can causeyouto slip or trip. Tallgrass can hide obstacles. 3. Alwaysbe sure of yourfooting.A slip andfall can cause serious personalinjury.If you feel you are losingyour balance,releasethe bladecontrol handle immediately,and the bladewill stop rotatingwithin 3 seconds. Do Not: 1. Donot mownear drop-offs, ditchesor embankments,where you could loseyour footingor balance. 2. Donot mowslopes greaterthan 15degrees asshown on the slope gauge. 3. Donot mowon wetgrass. Unstablefooting could cause slipping. Service 8. Neverattemptto makea wheel or cuttingheightadjustment whilethe engine is running. 9. Grasscatchercomponents,dischargecover,andtrail shield aresubjectto wear anddamagewhichcould expose movingparts or allowobjectsto be thrown.For safety protection,frequentlycheck componentsandreplaceimmediatelywithoriginal equipmentmanufacturer's(O.E.M.) parts only,listed inthis manual."Use of parts which do not meetthe original equipmentspecificationsmaylead to improperperformanceandcompromisesafety!" 10. Do not changethe enginegovernorsettingor overspeedthe engine.The governorcontrolsthe maximumsafe operating speedof the engine. 11. Maintainor replacesafetylabels,as necessary. Safe Handling Of Gasoline: 1. To avoid personalinjury or propertydamage useextreme care inhandlinggasoline. Gasolineis extremelyflammable and the vapors are explosive.Serious personalinjury can occur when gasolineis spilled on yourself or your clothes which can ignite. 2. Wash yourskin andchangeclothesimmediately. 3. Useonly an approvedgasolinecontainer. 4. Neverfill containers insidea vehicle or on a truckor trailer bedwitha plasticliner.Alwaysplace containerson the ground awayfrom yourvehicle beforefilling. 5. Removegas-poweredequipmentfromthe truck or trailer and refuel it on the ground.If this is not possible,then refuel such equipmenton a trailer witha portablecontainer,rather than from a gasoline dispensernozzle. 12. Observeproperdisposallawsand regulations.Improper disposalof fluidsand materialscan harmthe environment. 6. Keepthe nozzlein contactwiththe rim of the fuel tank or container openingat all times until fuelingis complete.Do not use a nozzle lock-opendevice. WARNING This symbol points out important safety instructions which, if not followed, could endangerthe personal safety and/or property of yourselfand others. Read and follow all instructions in this manual before attempting to operate this machine. Failureto comply with these instructions may result in personal injury. Whenyou see this symbol. HEED iTS WARNING Your Responsibility Restrict the use of this power machine to persons who read, understand and follow the warnings and instructions in this manual and on the machine. 5 1. Removeanypackingmaterialwhich may be between upperand lowerhandles. a. Pull up and backon upperhandleas shownin Step 1.Makecertainthe lowerhandleis seated securelyintothe handle mountingbrackets. b. Tightenhandknobs securingupperhandleto lowerhandle.Make surethat eachcarriagebolt is seatedproperlyin the handle. 2. Locatehairpinclip in one holeon the weldpin on each sideof lowerhandle. a. Removehairpinclipfrom this hole.Usinga pair of pliers,insert hairpinclip intothe other holeon the weldpin. Repeaton otherside. NOTE:Standbehind themowerasifyou weregoingtooperate it.Yourrighthandcorresponds totheright sideofthemower;your lefthandcorresponds totheleftsideofthe mower. b. Inserta carriagebolt fromthe hardwarepack into the upperhole on the handle mountingbracket. Securewith one plasticwing nut,also included in the hardwarepack.Repeaton other sidewith remainingitemsfrom hardwarepack. Step 1 . ardware Pack The ropeguide is attachedto the right sideof the upperhandle.Loosenthe wingnut which securesthe rope guide. a. Holdthe blade controlagainstupperhandle. Wing Nuts (2) b. Pull starterropeout of the engine.Releasethe bladecontrol. c. Slip starterrope into ropeguide. d. Tightenwingnut. NOTE:Yourmower i isshippedwiththe handleinthehigher I heightposition. . NOTE:Eachendof thelowerhandlemust beplacedinthesame i relativeposition. Insertpost on cable ties intoholes providedon the lowerhandle.Pull cabletie tight and trim excess. Step 2 f IMPORTANT DO NOTcrimp the I cables when lifting the handle up. I IMPORTANT This unit is shipped i without gasoline or ::oil in the engine. Fill up gasolineand oil as instructed in the i accompanying engine manual BEFORE operating your mower. J Step 3 Step 4 6 F 5. An adjustingplateand thumb leverat each wheel positionprovidescuttingheightadjustment. a. Depresslevertowardswheel. b. Moveit to anyof the ninepositionsfor desired cutting height.SeeStep 5. c. Releaselevertowardsmowerdeck. 6. Followstepsbelowto assemblethe grasscatcher: a. Placebag overframe sothat its black plasticside is at the bottom. uStment b. Slip plasticchannelof grass bagoverhooks on the frame.See Step6. All the plasticchannelsexcept centertop of bagattachfrom outsideof bag. c. Attachcentertop of bag from insideof bag. 7. Followstepsbelowto attachgrass catcher: ,.. a. Lift rear dischargedoor. j Step 5 b. Placegrass catcheron thepivot rod. Letgo of dischargedoor sothat it restson thegrass Step5 All wheelsmust be placedin the same relative positionl catcher.See Step7. To removegrass catcheror convertto a mulcher(if equipped),lift rear dischargedoor on the moweras shown in Step8. Lift grass catcherup and out of the pivot rod.Releasereardischargedoorto allow it to close rear openingof mower. ,_b, CUTTING HEIGHT GRASS CATCHER Step8 Makecertain bag is turned right side out before assembling (warning label Willbe on the outside)i unless the hooks the grass WARNING: Never on operate mower catcher are firmly seated in the slots on the handle bracket assemblies, and the rear discharge door rests firmly against top of the grass catcher. Step 6 WARNING Never operatemower unless the hooks on the grass catcher are firmly seated in slots on the handle bracket assemblies, and the rear discharge door rests f rmagainst y tOpof the grass catcher: J Step 7 7 Know Your Lawn Mower /'I BladeControl -- Drive Control Recoil Starter Oil Fill/Dipstick WARNING Grass Bag The blade control mechanism is a GasolineFill safety device. Never attempt to bypass its operations. Height Adjustment I Use extreme care when handling gasoline. Gasoline is extremely flammable and the vapors are explosive. Never fuel the machine indoors or while the engine is hot or running. Extinguish cigarettes, cigars, pipes and other sources of Levers Nowthat you haveset up your lawnmowerfor operation, get aquaintedwith its controlsand features.These are describedbelowand illustratedon this page.This knowledgewill allowyou to use yournewequipmentto its fullestpotential. Cutting Recoil Blade Control Adjustment Levers Starter The recoilstarteris attachedto the rightupper handle. Standbehindthe unitand pullthe recoilstarterropeto startthe unit. Theblade controlis attachedto the upperhandleof the mower,Depressand squeezeit againstthe upper handleto operatethe unit. Releaseit to stop engineand blade, _ Height One adjustmentleveris locatedon eachwheeland is usedto adjustthe cuttingheight.All fourlevers haveto be at the same relativepositionto ensurea uniformcut. Gas and Oil Fill-Up 1. Checkoil leveland add oil if necessary.Followengine manualfor this. See Figure1 abovefor locationof the oil fill. ignition. Keep hands and feet away from the chute area on cutting deck. Refer to warning label on the unit. J Figure 1 nism is a safety device. Never attempt WARNING:This blade control mechato bypass its operations. 2. Servicethe enginewith gasolineas instructedin the enginemanual. See Figure1 abovefor locationof gasfill. Drive Control Thedrivecontrol is locatedon the undersideof the _ upperhandleand is usedto engagethe drive.Squeeze it againstthe upper handleto engagethedrive; release it to slow downor stop mowerfrom propelling.See Figure1. 8 dling gasoline.Gasoline is extremely ARNING:Useextremecare hanflammable and the vapors arewhen explosive. Never fuel the machine indoorsor while the engine is hot or running. Extinguish cigarettes, cigars, pipesand other sources of ignition. =, /i_k Starting mowercan result in foreign objects WARNING: The operationof any lawn beingthrownintothe eyes,whichcan damageyoureyes severely.Always wear safetyglasseswhileoperating the mower,or while performing any adjustmentsor repairson it. Engine Mower WARNING:Besure no one otherthan the operatoris standingnear the lawn mower whilestartingengine or operatingmower. Neverrun engine indoors or in enclosed,poorly ventilatedareas. Engine exhaustcontainscarbon monoxide,an odorlessand deadly gas. Keep hands, feet, hair and looseclothing away from any moving parts on engine ,_ and lawnmower. 1. Standingbehindthe mower,squeezethe bladecontrol againstupper handle.See Figure2. Figure 2 object, stop the engine.Remove WARNING:If strike a foreign wire from the you spark plug,thoroughly inspectmower for any damage, and repair damage before restarting and operating. Extensive vibration of mower during operation is an indication of damage.The unit should be promptlyinspectedand repaired. 2. Holdingthesetwo handlestogetherfirmly,grasp recoil starterhandleand pull ropeout with a rapid,continuous, full arm stroke.See Figure2. Keepinga firm grip on the starterhandle,let the rope rewindslowly. 1. Oncethe engineis running,squeezethedrive Repeatuntil enginecranks.Letthe roperewindeach controlagainstthe upperhandleto propelmower. time slowly. 2. Forbest results,do notcut wet grass. 1. Releasebladecontrol to stop theengineand blade. 3. Fora healthierlawn, nevercut off morethan onethirdof the total lengthof the grass. 2. Disconnectsparkplug wirefrom spark plug and groundagainstthe engine. Using Stopping 4_ UsingYour Engine as Mulcher (if Equipped) Formulchinggrass,removethe grasscatcherfrom the mower.Therear dischargedoor shouldbe closed. 1. Foreffectivemulching,do notcut wet grass. completely before doing any work WARNING:Wait the blade tograss stop on the mower or for to removethe catcher. 2. Newor thick grassmay requirea narrowercut. Adjustgroundspeedaccordingto conditionof lawn. 3. if thegrass has beenallowedto growinexcessof 4 inches,mulchingis not recommended.Usethe grasscatcherto bag clippingsinstead. Lawn Mower Using Grass Catcher Youcan usethe grass catcherto collectclippingswhile without eitherthe rear door or the entire youare operatingthe mower. _ ARNING:Never operate your mower on page grass catcher assembly firmly secured. 1. Attachgrasscatcherfollowinginstructions 7.Grassclippingswill automaticallycollectin bag as you run mower.Operatemowertill grass bag isfull. Be surelawnis clearof stones,sticks,wire,or other 2. Stopenginecompletelyby releasingthe blade objectswhich coulddamagelawnmoweror engine. controlhandle.Makesurethat the unit hascometo Such objectscouldbe accidentlythrownby the mower a completestop. in anydirectionand cause seriouspersonalinjuryto the 3. Lift dischargedoor and pull grassbag up and away operatorand others. fromthe mowerto disposeof the grass clippings. 9 WARNING The operation of any lawn mower can result in foreign objects being thrown into the eyes, which can damage your eyes severely. Always wear safety glasses while operating the mower, or while performing any adjustments or repairs on it. Be sure no one other than the operator is standing near the lawn mower while starting engine or operating mower. Never run engine indoors or n enclosed, poorly ventilated areas. Engine exhaust contains carbon monoxide, an odorless and deadly gas. Keep hands, feet, hair and loose clothing away from any moving parts on engine and lawn mower. Lubrication 1. Lubricatepivot pointson theblade controlat least oncea seasonwith lightoil. The bladecontrol must operatefreely in both directions.See Figure3. 2. Lubricatethe wheelsat least oncea seasonwith lightoil (or motoroil). If wheelsare removedfor any reason,lubricatesurfaceof the pivotarm and inner surfaceof thewheelwith light oil. See Figure3. Maintaining 3. Lubricatethe torsionspringand pivot pointon the rear dischargedoor periodicallywith lightoil to prevent rust.See Figure3. 4. Thetransmissionis pre-lubricatedand sealedat the factoryand does not requirelubrication. 5. Followtheaccompanyingengine manualfor lubrication scheduleand instructionfor engine lubrication. Figure 3 Deck Care 1. Disconnectsparkplug wire. Draingasolinefrom lawn mower,or placea pieceof plasticunderthe gas cap. 2. Tip mowersothat itrestson the housing.Keepthe sidewith the air cleanerfacingup. Hold mowerfirmly. WARNING A vays stop e,g ne; disconnect spark than 90 degrees in any directions and tip thetipped mower more doARNING:Never not leavethe mower for any length of time. Oil can drain intothe upper part of the enginecausing a starting problem. _ pluglandground againstenginebefore cleaning,lubricating ordoing anyk nd of maintenance onV0ur 3. Scrapeand clean the undersideof the deck with a suitabletool. Do notspraywith water. machine! Figure 4 4. Putthe mowerback on its wheelson the ground.If youhad put plasticunderthe gas capearlier,make sureto removeit now. I General Recommendations 1. Alwaysobservesafetyruleswhen performing anymaintenance. Engine 2. Thewarrantyon this lawnmowerdoesnot cover itemsthat havebeen subjectedto operatorabuse or negligence.To receivefull valuefromwarranty, operatormustmaintainthelawn moweras instructed here. We do not recommend the used pressure washers or garden hose to clean your uniL These may cause damage to electric shortened lifeand i reduceserViceabilityl 3. Cleansparkplug and resetthegap once a season. Checkenginemanualfor correctplugtype and gap specifications. 4. All adjustmentsshouldbe checkedat leastonce eachseason. 5. Periodicallycheckall fastenersand makesurethese are tight. 4. Cleanengineregularlywith a cloth or brush. Keepthe coolingsystem(blowerhousingarea) cleanto permit properair circulation.Removeall grass,dirt and combustibledebrisfrom mufflerarea. Replacing eys;bear ngs, or the engine. The use of water will result in 2. Serviceair cleanerevery25 hoursundernormal conditions.Cleaneveryfew hoursunderextremely dustyconditions.Referto engine manual. 3. Changingof engine-governedspeedwill void enginewarranty. componentsspindles pu Care 1. Maintainoil levelas instructedin enginemanual. ,_1_1 disconnect spark plug, and ground WARNING:Alwaysstop engine, against engine before cleaning, lubricatingor doing any kind of maintenance on your machine. Rear Flap 1. Toremoverearflap, cut off the flat end of the wire rod whichsecuresit to the deck.See Figure4. 2. Attachthe newflapand newrod to deck, bendingthe endsof the new rod overto secureto deck. 10 _lllk bladefor sharpeningor replacement, ARNING:Whenremovingcutting protectyourhands with a pairof heavy gloves or use a heavy rag to hold blade. _ _ i i i iii _ _ ii _i ii Maintaining 1. Disconnectsparkplug wirefrom spark plug.Turn moweron its side makingsurethat the air filter and the carburetorare up. You r LaWn 2. Removebolt, blade bell support,blade,and blade adapterfrom the enginecrankshaft.See Figure5. \ J 3. The bladecan be sharpenedwith a fileor on a grinding wheel.Do notattemptto sharpenthe blade while it is still on the mower.Whensharpeningblade,follow originalangle of grind.Grind cuttingedgesequallyto keep bladebalanced. Figure 5 4. Removebladefrom the adapterfor testingbalance. Balancethe bladeon a roundshaftscrewdriverto check. Removemetalfrom the heavysideuntil it balancesevenly. ,_/lli WARNING causeexcessive vibration when rotating WARNING:An blade will at high speeds,unbalanced it may cause damage to mower,and could break causing personalinjury. 5. Lubricatetheenginecrankshaftand the inner surface of the blade adapterwith lightoil. Slide the blade adapteronto the enginecrankshaft.Placethe blade on theadaptersuch that the sideof the blade marked "Bottom"(or with part number)facesthe groundwhen the moweris in the operatingposition.Makesurethat blade is alignedand seatedon bladeadapterflanges. Figure 6 When removing the cutting blade for sharpening or replacement or when sliding the belt around it, protect your hands with a pair of heavy gloves or use a heavy rag to hold the blade. An unbalanced blade will cause excessive vibration when rotat- 6. Placeblade bell supporton the blade.Align notches on the bladebell supportwith smallholesin blade. Replacehex boltand tightenhex boltto torque:450 in. Ibs. min.,600 in. Ibs.max. ing at high speeds. It may cause damage to mower, and could break causing personal injury. Toensuresafe operationof yourmower,periodically checkthe blade boltfor correcttorque. Belt Care 1. Removetwo shoulderscrewssecuringfrontdrive cover to mowerdeck.See Figure6. Pressinwardon sides of front drivecoverand releasetabs that secure Figure 7 it to the heightadjusterbrackets.Removedrivecover from mower. undersideof mower.Slidebelt off of engine pulley Loosenscrewholdingbelttensionspringto transand aroundthe blade.See Figure7. mission.See Figure6 inset.Donot removescrew 4. Replacewith newbelt, workingaround blade.Make completely.As youloosenit, tensionon the belt will be surebelt is firmlyseatedon engine pulleywhile released. pullingfrom the othersideand slidingit aroundthe 3. Pushtransmissionup a little and slidebelt off the transmissionpulley.Tightenscrewloosenedearlier transmissionpulley.Lift mowerto access beltfrom to securebelt tensionspringto the transmission. Reassemblefront drivecover. . 11 ii Problem Cause Engine fails to start I ii 3. 4. 5. 6. Engine overheats I I I Occasional skips (hesitates) at high speed !iiiiiLi i Iiiiii 1. Engineoil levellow. 1. Fillcrankcasewith proper oil 2. Air flow restricted. 2. Removeblowerhousing and clean. 3. Referto engne manua. 3. Carburetornot adjustedpropery. I 1. Sparkplug gap too close. 1. Adjust gapto .030". 2. Carburetoridlemixtureadjustment 2. Referto engine manual. I 1 Sparkplug fouled, faulty or gap too wide. I 2. Carburetorimproperlyadjusted. 3. Drtyarceaner, Excessive Vibration Mower will not much _rass ' f E u y _d,t q PP ) i ii i i i I i I I Unevencut 2 . Referto engine manual. 3. Refertoengnemanua. 1. Tighten bladeandadapter.Balance 2. Bentcutting blade. 2. See an authorizedservicedealer. 1. Wetgrass. , 2. Excessivelyhigh grass. I I 3. Sharpenor replaceblade. 1. Wheelsnot positionedcorrectly. 1. Placeall four wheelsin same heightposition. 2. Sharpenor replaceblade. I 1. Belt not installedproperly. ' I 2. Debrs clogg ng driveoperation. I 1. Check belt for proper puley installation and movement. 2, Stop engine,disconnectsparkplug I . 1. Donot mowwhen grass is wet; wait until laterto cut, 2. Mowonce atahigh cutting height then mowagainat desiredheight or makea narrowercutting path, 3. Dub ado. 2. Dull blade. Mower will not seIf propeI 1. Resetgapto .030"or replace spark plug. blade. I i I 1. Cuttingbladeloose or unbalanced. I i_i 5. Referto engine manual. 6. Referto engine manual. improperly set. Idles noorlv i Engage bladecontro!. 21 c0nnect wireto sPa[k piugl 1. Connect andtighten sparkplug wire. 2. Clean fuel line; fill tank withclean, fresh gasoline. 3. Clear vent. 4. Drainfuel tank. Refillwithfresh fuel. Ventingas cap plugged. Wateror dirt infuel system. Dirtyair cleaner. Carburetorout of adjustment. I r i 1. Sparkplug wire loose. 2. Blockedfuel lineor stale fuel. Engineruns erratic For repairs beyond the minor adjustments listed here, contact an authorized service Biadecontroldisengaged. spark plug Wiredisconnected: Remedy wire and clean out debris. 3. Damagedorworn belt. 12 . 3. Inspectand replacebelt. Off-Season Storage The followingstepsshouldbe taken to prepareyour lawn mowerfor storage. 1. Cleanand lubricatemowerthoroughlyas describedin the lubricationinstructions. 2. We do not recommendthe useof a pressurewasher or gardenhoseto cleanyour unit. 3. Referto enginemanualfor correctengine storageinstructions. 4. Coat mower'scuttingblade with chassisgreaseto preventrusting. 5. Storemowerin a dry, cleanarea. Donot storenext to corrosivematerials,suchas fertilizer. Whenstoringanytype of powerequipmentin a poorly ventilatedor metal storageshed, careshouldbe taken to rust-prooftheequipment.Usinga lightoil or silicone, coat theequipment,especiallycablesand all moving parts of yourlawnmowerbeforestorage. _i _i i _iii i__ i iii ii_ Safety Labels Found On Your Lawn Mower DO NOT remove safety (or any) labels from mower for any reason. 13 Model 446 \ ) \\ 14 1 747-1161A Blade Control 35 716-0102 Snap Ring 2 749-1092A UpperHandle 36 731-04998 Trailshield 3 747-04080 37 732-0700 TrailshieldWire 4 749-0928A LowerHandle 38 712-0397 WingNut, 1/4-20 5 720-0279 WingNut 39 747-04035 RearDoorPivot Rod 6 710-1205 RopeGuide 40 732-04175 Spring Lever 7 710-1174 CarriageBolt ,5/16-18x 2 41 687-02071 PivotArm Assembly- RH 8 664-04007A Grass BagAssembly 687-02070 PivotArm Assembly- LH 9 720-04072 GrassCatcherFrame HandKnob 42 782-7551A WheelDustCap 10 750-04594 SleeveSpacer- RH 43 712-04065 FlangeLock Nut,3/8-16 11 726-0240 CableTie 44 714-0104 HairpinClip 12 710-0703 CarriageBolt,I/4-20 45 710-0654A TT SemsScrew,3/8-16x 1.00 13 731-04134A RearDischargeDoor 14 750-04162 Spacer 46 687-02193 Ht. Adj.Assy. Front- LH 687-02194 Ht. Adj.Assy. Front- RH 15 732-04089A TorsionSpring- LH 47 687-02069 RearHandleBracketAssy.- LH 16 732-04090A TorsionSpring- RH 687-02068 RearHandleBracketAssy.- RH MPORTANT 22 782-5002B FrontBaffle 53 731-05196A Front DriveCover 23 748-04015A BladeAdapterw/Pulley 54 732-1043 BeltTensionSpring For a proper WQrking machine; use Factory Approved Parts: V-BELTS are Specially designed to engage and disengage safelyl A substitute (nOnOEM) ViBelt can be dangeri ous by not d sengaging 24 742-0741 21"MulchingBlade 55 682-0015 BearingAssembly completely. 25 710-1257 Hex Bolt, 3/8-24x 2.5 56 736-0447 WaveWasher 26 687-02044 Pivot PlateAssembly 57 710-0216 Hex Screw 27 736-0524B Blade Bell Support 58 715-0221 DowelPin 28 787-01298 HeightAdjustmentPlate- RH 59 717-1762 Gear,14T- RH 787-01299 HeightAdjustmentPlate- LH 717-1761 Gear,14T- LH 17 734-1987 RearWheel 48 747-1214 Drive Control 18 731-04150C RearBaffle 49 710-1650 ShoulderScrew 19 750-04595 SleeveSpacer- LH 50 746-04203 Drive Cable 20 787-01277 Deck- 21" 51 754-04101 V-Belt 21 736-0474 Washer,1.5"0D 52 618-04376 TransmissionAssembly 29 720-0426 AdjustmentLeverKnob 60 710-04531 Screw,1/4-20x.390 30 732-0706 FrontLever-RH 61 710-04329 TorxScrew 732-0707 FrontLever- LH 62 715-0129 Spirol Pin 31 738-04136 ShoulderScrew 63 715-04030 Dowelpin 32 634-0190 FrontWheel 64 710-0969 Screw,#12-16x 1.00 33 710-04371 Screw,1/4-15x 1.250 65 756-04132 Pulley,3.82 x .313x .68 34 746-1132 ControlCable-40.75" 66 736-0105 Bell Washer,.325x .930x .45 15 To order replacement parts, contact 1-800-800-7310 or visit www.mtdproducts.com, MANUFACTURER'S LiMiTED WARRANTY The limitedwarrantyset forth belowisgivenby MTDLLCwith respect to newmerchandisepurchasedand usedin the UnitedStates,its possessionsand territories. "MTD"warrantsthis productagainstdefectsin materialand workmanshipfor a periodof two (2) years commencingon the date of original purchaseand will, at its option,repairor replace,freeof charge,any part foundto be defectiveinmaterialsor workmanship.This limitedwarranty shallonlyapply if this product hasbeen operatedand maintained inaccordancewith the Operator'sManualfurnishedwith the product, and has notbeen subjectto misuse,abuse,commercialuse, neglect, accident,impropermaintenance,alteration,vandalism,theft, fire, water, or damagebecauseof otherperil or naturaldisaster.Damageresulting fromthe installationor useof any part, accessoryor attachmentnot approvedby MTDfor use with the product(s)coveredbythis manual willvoid yourwarrantyas to any resultingdamage. Normalwearparts are warrantedto be free fromdefects in materialand workmanshipfor a periodof thirty (30) days fromthe dateof purchase. Normalwearparts include,butare notlimitedto itemssuch as: batteries,belts,blades,blade adapters,grass bags, riderdeck wheels,seats, snowthrowerskid shoes,shaveplates,auger spiralrubberand tires. NOW TO OBTAIN SERVICE: Warranty service is available, WITH PROOF OF PURCHASE, through your local authorized service dealer. To locate the dealer in your area, check your Yellow Pages, or contact MTD LLC at RO. Box 361131,Cleveland, Ohio 441360019, or call 1-800-800-7310 or 1-330-220-4683 or log on to our Web site at www.mtdproducts.com. This limitedwarrantydoesnot providecoverageinthe followingcases: a. Theengineor componentparts thereof.These itemsmaycarry a separatemanufacturer'swarranty.Referto applicablemanufacturer's warrantyfor termsand conditions. b. Log splitterpumps,valves,and cylindershavea separateone year warranty. c. Routinemaintenanceitemssuch as lubricants,filters, blade sharpening,tune-ups,brakeadjustments,clutchadjustments,deck adjustments,and normaldeteriorationof the exteriorfinish due to useor exposure. FOR e. MTDdoesnot extendanywarrantyfor productssoldor exported outsideof the UnitedStates,its possessionsand territories,except those soldthroughMTD'sauthorizedchannelsof export distribution. f. Replacementparts that are notgenuine MTDparts. g. Transportationchargesand servicecalls. No impliedwarranty,includingany impliedwarrantyof merchantabilityof fitness for a particular purpose,applies after the applicable periodof express written warranty above as to the parts as identified.No otherexpresswarranty, whetherwritten or oral, except as mentioned above, givenby any personor entity, includinga dealeror retailer, with respect to any product,shall bind MTD.Duringthe periodof the warranty,the exclusiveremedy is repairor replacementof the productas set forth above. The provisionsas set forth in this warrantyprovidethe sole and exclusiveremedy arising from the sale. MTDshallnot be liable for incidentalor consequentialloss or damage including,without limitation, expensesincurredfor substituteor replacementlawn careservicesor for rentalexpensesto temporarily replacea warranted product. Somestatesdo notallowthe exclusionor limitationof incidentalor consequentialdamages,or limitations on howlong an impliedwarranty lasts,sothe aboveexclusionsor limitations maynot applyto you. In no event shallrecoveryof any kindbe greaterthanthe amountof the purchasepriceof the productsold.Alterationof safety features of the product shallvoid this warranty. Youassumethe riskand liability for loss,damage,or injuryto you and yourpropertyand/orto others and theirpropertyarisingout of the misuseor inabilityto usethe product. This limitedwarrantyshallnot extendto anyoneotherthan theoriginal purchaseror to the personfor whomitwas purchasedas a gift. HOWSTATELAWRELATESTOTHIS WARRANTY: This limited warrantygivesyou specificlegal rights,and youmay alsohaveother rightswhich vary from stateto state. IMPORTANT:OwnermustpresentOriginal Proofof Purchaseto obtain warrantycoverage. d. Servicecompletedby someoneotherthanan authorizedservice dealer. MTD LLC, P.O. BOX 361131 CLEVELAND, OHIO 44136=0019; Phone: 1=800=800=7310, 1=330=220=4683
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