Safety • Assembly • Operation • Tips & Techniques • Maintenance • Troubleshooting • Parts Lists • Warranty A O AL ) Hydrostatic Lawn Tractor- Model Series 620 iMPORTANT READ SAFETY RULES AND iNSTRUCTiONS CAREFULLY BEFORE OPERATION Warning: This unit is equippedwithan internalcombustionengineand shouldnot be usedon or nearany uniiprovedforest-covered,brushcoveredor grass-coveredland unlesstheengine'sexhaustsystemis equippedwith a sparkarrestermeetingapplicablelocalor statelaws(if any).
This Operator's Manual is an important part of your new lawn tractor, 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 ................................... Setting UpYour Lawn Tractor ............................ Operating Your Lawn Tractor ........................... Adjusting Your Lawn Tractor ............................
Sight and h01dthis level with a vertical tree.., m_,_ >:. or a corner of a building... I I G.) o9 __ (13 I i i (13 or a fence post O do; O C ::>., -- E c_ O G.) _0 o6 _-- (13 co .oo o -_ G.) O9 G.
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. Operation 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.
GeneralOperation: 14.Watchfor traffic whenoperatingnearor crossing roadways.This machineis not intendedfor useon anypublic roadway. 15.Do notoperatethe machinewhileunderthe influenceof alcoholor drugs. 16.Mowonly in daylightor good artificiallight. 17.Nevercarry passengers. 18.Disengageblade(s)beforeshiftinginto reverse. Back up slowly.Alwayslookdownand behindbefore and whilebackingto avoida back-overaccident. 19.Slowdownbeforeturning.Operatethe machine smoothly.Avoiderraticoperationand excessive speed.
Do Not: Operation This symbol points out important safety instructions which, if not followed, could endangerthe personal i safety and/or property of yourself and others. Read and follow all =nstructionsin this man- Slopesare a majorfactor relatedto loss of controland tip-overaccidentswhich can resultin severeinjuryor death.All slopesrequireextracaution.If youcannot back up the slopeor if youfeel uneasyon it, do notmow it.
Service 10.Neverattemptto makeadjustmentsor repairsto the machinewhilethe engine isrunning. 1. Neverrun an engineindoorsor in a poorlyventilated 11.Grasscatchercomponents and the discharge area. Engineexhaustcontainscarbonmonoxide,an coverare subjectto wearand damagewhich could odorless,and deadlygas. exposemovingpartsor allowobjectsto be thrown. 2. Beforecleaning,repairing,or inspecting,makecertain Forsafety protection,frequentlycheckcomponents the blade(s)and all movingparts havestopped.
NOTE:This OperatorsManualcoversa rangeof product specificationsfor variousmodels.Characteristics and featuresdiscussedand/or illustratedin this manual may not be applicableto all models.MTDLLCreserves the rightto changeproductspecifications,designs and equipmentwithoutnoticeand withoutincurring obligation. Attaching the Battery Rubber Boot Cables NOTE: If thesecablesare alreadyattached,ignore thesestepsand proceedto "Gas& Oil Fill-Up." NOTE: Thepositivebatteryterminalis markedPos. (+).
Shipping Brace Removal WARNING: Makesure the riding mower's engine is off, removethe ignition key,and set the parking brake before removing the shipping brace. Locatethe shippingbrace,if present,and accompanyingwarningtag foundon the right sideof the mower,betweenthe dischargechute and thecutting deck.See Fig. 3-2. Setting Up Whileholdingthe dischargechutewith your left hand,removethe shippingbracewith your right hand bygraspingit betweenyour thumband index fingerand rotatingit clockwise.
/ Attaching f The Seat Seatstyles vary bytractormodeland thereare three differentstyles available: • StandardAdjustment QuickAdjustment& • KnobAdjustment If the seatfor yourtractordid notcome attached, referto Fig. 3-4, Fig. 3-5, and Fig. 3-6 to identifyyour tractor'sseatstyle and followthe applicableinstructions belowto attachit. WARNING Before operating this machine, make sure the seat is engaged in the seat stop, stand behind the machine and pull back on seat until fully engaged into stop.
Setting the Gauge Wheels Selectthe heightpositionof the cuttingdeck byplacing the deck lift leverin anyof the six differentcuttingheight notcheson the rightfender. Adjustthe deck wheelsso that they are between1A-inch and 1/2-inch abovethe groundas follows. SettingUp fromthe dischargeopening of the cutting WARNING:Keep hands andfeet away deck. ,_ Placethetractoron a firm and levelsurface,preferably pavement.Proceedas follows: \ Placethetractor'sdeck lift handlein the normally desiredmowingheightsetti
Know the Controls Readthis owner'smanualand safety rulesbeforeoperatingyourlawnmower.Comparefigurebelowwith yourlawn tractorto learnaboutthe Ioctionand purposeof variouscontrolsand adjustments.Savethis manualfor futurereference. It is very importantto followthe instructionsand operatethe controlsproperly. f F A G H NOTE:Any reference in this manual to the RIGHTor LEFT side of the tractor is observed B J from operator's position.
m Throttle Control F Lever Thethrottlecontrol leveris locatedon the rightside of thetractor'sdash panel.This levercontrolsthe speed of the engineand,on somemodels,when pushedall theway forward,the chokecontrol also.Whenset ina givenposition,the throttlewill maintaina uniformengine speed.See Fig. 4-2. Fast Position Choke Position Fast Position IMPORTANT:Whenoperatingthetractorwith the cutting deck engaged,be certainthat the throttleleverisalways inthe FAST(rabbit)position.
\-_ BATT, OIL I /// Battery It is normalfor the Batterylightto illuminatewhile the engineis crankingduring start-up,but if it illuminate's duringoperation,while the engine is running, the batteryis in needof a chargeor the engine'scharging systemis not generatingsufficientamperage.Referto the MAINTENANCEsectionof this manualfor the proper batterychargingprocedureor havethechargingsystem checkedby yourservicedealer. zZ 42.0 HOURS Ammeter 1/1 0 \\\ PTO/ BLADE PARKING Electric Figure 4-4 PTO (Blad
Seat Adjustment Lever (if so Equipped) Safety Interlock Switches Toadjustthe seat forwardor backwardon unitsequipped This tractoris equippedwith a safetyinterlocksystem with a quick-adjustseat,slidethe seatadjustmentlever for the protectionof the operator.Ifthe interlocksystem to the left and repositionthe seatto the desiredposition. shouldevermalfunction,do notoperatethe tractor. Contactan authorizedMTDservicedealer.
f , WA Reverse .Push Button indicator Light AVOID SERIOUS INJURY OR DEATH Reverse Caution Mode Position Stop Position © Start Position • GO UP AND DOWNSLOPES,NOT ACROSS. • AVOID SUDDENTURNS. • DO NOT OPERATETHE UNITWHERE IT COULDSLIP OR TIR • IF MACHINE STOPSGOINGUPHILL,STOP BLADE(S) AND BACK DOWNHILLSLOWLY. • DO NOT MOWWHEN CHILDRENOR OTHERSARE AROUND. • NEVER CARRYCHILDREN,EVENWITH BLADESOFR • LOOK DOWNAND BEHINDBEFOREAND WHILE BACKING.
Setting the Cutting Height 1, If thebhdesareengaged,phcethePTO(Bhde ................ Engage)knobnthedsengaged(OFF)poston ]' _lelectth'eh'e/ghtl_°sm°ni°tthecu!!lng(]eCK'DYntacln [ne(]ecKiTHevernan oHneslx(]mere 2, Turnthe ignitionkey counterdockwiseto the STOP P g Y post on cutt ng he ght notcheson the r ght sde of the fender .... ,_÷_,_,_,f,^_÷_,_;_;÷;.... ;÷_,÷....... , ' 3. R_...uw H_ _y .,u... H_ .y..uu. _vv.,_.,u F,_w., 2. Adjustthe deck wheelsso that they are between unintendedstarting.
Moving the Tractor Tochangethe directionof travelto reversewhen operatingwith cruisecontrol,depressthe brakepedal to disengagethe cruise controland bring thetractorto a completestop.Thenslowlydepressthe rearportionof the drivepedalwith the ballof yourfoot to travelin reverse. Manually Yourtractor'stransmissionisequippedwitha reliefvalve foroccasionswhenitisnecessaryto movethetractor manuallyActivatingthis valveforcesthetransmission fluidto bypassitsnormalroute,allowingthe reartires to "freewheel.
• Do notcut the grasstoo short.Shortgrass invites 2, Pivotthe dischargechute up to accessthe deck weedgrowthand yellowsquicklyin dryweather, opening,See Fig,4-6, Mowingshouldalwaysbe donewith the engineat full throttle. f • Underheavierconditionsit may be necessaryto go backoverthe cut areaa secondtime to get a clean cut. • Do NOTattemptto mow heavybrushand weedsand extremelytall grass.Yourtractoris designedto mow lawns,NOTclearbrush. Your Lawn • Keepthe bladessharpand replacethe bladeswhen worn.
Side to Side adjustments whileattempt the engine is running, ARNING:Never to make any except where specified in the operator's manual. _ If the cuttingdeck appearsto be mowingunevenly,a side to side adjustmentcan be performed.Adjustif necessary as follows: Leveling the Deck 1. With the tractorparkedon a firm,levelsurface,place NOTE:Checkthe tractor'stire pressurebeforeperforming anydeck levelingadjustments.
Seat Adjustment Quick Adjust Seat (if so equipped) _ ARNING:Beforeoperatingthis make sure the seat is engagedin machine, the seat stop, standbehind the machineand puff back on seat until fullyengagedinto stop. Adjusting Toadjust the positionof the seaton modelsequipped with a seat adjustmentlever,movethe leverto the left and slidethe seatforwardor rearward.Referto the Setting UpYour LawnTractorsection.Makesure seat is lockedintopositionbeforeoperatingthe tractor.
Air Cleaner Servicethe pre-cleaner,if soequipped,and cartridge/air cleanerelementas instructedin the EngineOperator/ OwnerManualpackedwith your unit. Spark Plug(s) Thespark plug(s)shouldbe cleanedand thegap reset oncea season.Sparkplug replacementis recommended at the startof each mowingseason.Referto the Engine Operator/OwnerManualfor correctplug type and gap specifications.
Deck Wash System TM Twowaterports are availableon your mowerdeck to be usedas partof the deck wash system.Use the DeckWashSystemTM to rinsegrassclippingsfrom the deck'sundersideand preventthe buildupof corrosive chemicals. If yourtractoris notalreadyequippedwith a Deck WashSystemTM then a hexplug can be foundon your tractor'sdeck surface.This plug can be replacedwith a separately-availableDeckWash SystemTM.
7, Repeatthe abovestepson the tractor'srightside, , , Charging Movethe deck lift leverintothe top notchto raisethe deck lift armsup and outof the way. IMPORTANT:Whenchargingyourtractor'sbattery,use onlya chargerdesignedfor 12Vlead-acidbatteries.Read yourbatterycharger'sOwner'sManualpriorto charging yourtractor'sbattery.Alwaysfollow its instructionsand heed its warnings. Gentlyslidethe cuttingdeck towardthe frontof the tractorallowingthe hookson the deck to release themselvesfromthe deck stabilizerrod.
Cutting Blades f'_ He× Flange Nut "_ off, remove ignition the ARNING: Be sure key,disconnect to shut the engine spark plug wire(s) and ground against the engine to prevent unintended starting before removing the cutting blade(s) for sharpening or replacement. Protect your hands by using heavy gloves or a rag to grasp the cutting blade. _ Maintaining WARNING: Periodically inspect the blade spindles for cracks or damage, especially if you strike a foreign object. Replace immediately if damaged.
Changing _ Maintaining NOTE:Theidlerpulleysmayhaveto be loosened,but not removed,in orderto removethe beltfromaroundthem. the Deck Belt remove ignitionsure key,disconnect the spark ARNING:Be to shut the engineoff, plug wire(s) and ground against the engine to prevent unintended starting before removing the belt(s). WARNING:Avoid the possibilityof a pinchinginjury. Donot placeyour fingers on the idler spring or between the belt and a pulley while removing the belt.
d 50oinch Deck (Electric PTO) Tractor J Figure 6=7 54-inch Deck (Electric PTO) Figure 6=8 27
Cleanand lubricatethe tractoras instructedin the MAiNTAiNiNGYOUR LAWNTRACTORsectionof this manualbeforestoringfor an extendedperiod. _i= Followthe instructionsin the Service, Storage & Specifications sectionof the EngineOperator/Owner Manualfor properenginecare priorto storingyourtractor. container outdoors,awayfrom an open ARNING:Drainfuel only intoan approved ,A_ flame.Allowengine to cool. Extinguish cigarettes,cigars, pipes,and othersources of ignitionpriorto draining fuel.
Labels ROTATING BLADES CAUSE SERIOUS INJURY OR DEATH * DONOTMOWWHENCHILDREN OR OTHERS AREAROUND * NEVERCARRYCHILDREN EVENWiTH BLADE(S) OFF, * LOOKDOWNANDBEHIND BEFORE ANDWHILEBACKING, 0 WARNING The abovesymbol points out important safety instructionsin this manual which, if not followed,could endangerthe personal safety and/or property of yourselfand others. Read and follow all instructionsin this manual beforeattemptingto operate this machine.
Pro bl e m Ca use Enginefails to start Remedy 1. PTOengaged• 1. PlacePTOknobin disengaged 2. Sparkplugwire(s) disconnected. 3• Fueltank empy t or stalefuel• 4 Chokenot act vated 2. Connectwire(s) to spark plug(s)• 3• F tankwth c ean fresh gaso ne 4. Pullout the CHOKEcontrol (if so (OFF)position• • equipped)or placethe throttle control in CHOKEposition• 5. Faultysparkplug• 5. Clean,adjustgap,or replace• 6. Blockedfuel line• 6. Cleanfuel line or replacefuelfilter, 7.
Problem Engine overheats Cause 1! Engine0il level!0wl 2. Air flow restricted. Clean grassClippingsand debis fromaroundthe eng ne Scoo!ing fins and blowerhousing. ....... Enginehesitates at high RPM desp0or Y 1. Sparkplug(s)gap tooclose. 1 Sparkpug(s)foued too wide. fautyorgap will not mulch grasS(f Equ Jpped) 1 ' Repacesparkpug(s) Setpug(s) gap. 2 Dirtyair Cleaner. 2 Replaceaircleaner cartridgeielei 1. Cuttingblade looseor unbalanced. equipped. 1. Tightenbladeand spindle. Balanc_ blade. 2.
NOTE:Downloada completeParts Manualfreeof chargeat www.mtdproducts.com or phone(800) 800-7310to purchasea PartsManual.Be sureto haveyourmodelnumberand serialnumberready.These canbe foundon the modelplatelocatedunderthe seat.Referto page 2 for moreinformationregardinglocatingyourmodeland serial numbers.
NOTES Use this page to make notes and write down important information.
NOTES Use this page to make notes and write down important information.
CALIFORNIA EMISSION CONTROL WARRANTY STATEMENT YOUR WARRANTY RIGHTS AND OBLIGATIONS The CaliforniaAir ResourcesBoardandMTDConsumerGroupInc are pleasedto explainthe evaporativeemissioncontrolsystemwarrantyon your 2007lawn mower.In California,new lawnmowermust be designed,builtand equippedto meet the State'sstringentanti-smogstandards.MTDConsumerGroupInc must warrantthe EECSon yourlawn mowerfor the periodof time listedbelow providedthere has beenno abuse,neglector impropermaintenanceof your lawnmower.
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.
