MTD 21AB455C730 Operator's Manual

Rear tine tiller
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Safety • Assembly • Operation • Tips & Techniques • Maintenance • Troubleshooting • Parts Lists • Warranty
OF
A
O
AL
Rear Tine Tiller - Model Series 450
iMPORTANT
READ SAFETY
RULES AND iNSTRUCTiONS
CAREFULLY
BEFORE
OPERATION
Warning:
This unit is equippedwithan internal combustionengineand shouldnot be usedon or nearany unimproved forest-covered, b rush-
coveredor grass-covered land 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 CaliforniaPublicResources Code). Otherstatesmay havesimilarlaws.Federallaws applyon federallands.A sparkarrester
for the muffleris availablethroughyour nearestengineauthorizedservicedealeror contactthe servicedepartment,RO. Box361131 Cleveland,
Ohio 44136-0019.
PRINTEDIN U.S.A
MTD LLC, P.O. BOX 361131 CLEVELAND,
OHIO 44136-0019
FORMNO. 769-02193C
03/16/2007

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Summary of Contents for MTD 21AB455C730

  • Page 1 If a sparkarresteris used,it shouldbe maintainedin effectiveworkingorder by the operator.In theState of Californiathe aboveis requiredbylaw (Section4442 of the CaliforniaPublicResources Code). Otherstatesmay havesimilarlaws.Federallaws applyon federallands.A sparkarrester for the muffleris availablethroughyour nearestengineauthorizedservicedealeror contactthe servicedepartment,RO. Box361131 Cleveland, Ohio 44136-0019. PRINTEDIN U.S.A FORMNO. 769-02193C MTD LLC, P.O. BOX 361131 CLEVELAND, OHIO 44136-0019 03/16/2007...
  • Page 2: Customer Support

    You can locate the model plate by looking at the rear of the tine shield. This informationis important for use when visiting the manufacturer'sweb site, obtaining MTD LLC P.O= BOX 361131 assistance from the Customer Support Department, or when CLEVELAND, OH 44136 communicatingwith an authorized service dealer.
  • Page 3 WARNING This symbol points out importantsafety instructionswhich, if not followed,could endangerthe personal safety and/or property of yourselfand others. Read and follow all instructionsin this manual beforeat- temptingto operate this machine. Failure to comply with these instructionsmay result in personalinjury.When you see this symbol. HEED ITS WARNING! Your Responsibility Restrict the use...
  • Page 4 WARNING: Engine Exhaust, some of its constituents, and certain vehicle components contain or emit chemicals known to State of California to cause cancer and birth defects or other reproductive harm. DANGER: This machine was built to be operated according to the rules for safe operation in this manual.
  • Page 5: Safety Labels

    • After strikinga foreignobject,stop the engine, Maintenance & Storage disconnectthe spark plug wireand groundagainst • Nevertamperwith safetydevices.Checktheir the engineThoroughlyinspectthe machinefor any properoperationregularly. damage.Repairthe damagebeforestartingand • Checkboltsand screwsfor propertightnessat operating. frequentintervalsto keepthe machinein safe • Disengage all clutchlevers(if fitted)and stopengine workingcondition.Also, visuallyinspectmachine beforeyouleavethe operatingposition(behindthe for anydamage.
  • Page 6 NOTE: References to rightor left sideof thetillerare Hex Bolt determined from behindthe unitin theoperatingposition. Flat Washer To Remove Unit From Carton T-Knob o Hairpin Clip • Removestaples,breakglue on topflaps,or cut tape at cartonend and peelalong top flapto open carton. • Removelooseparts includedwith unit (i.e., operator'smanual,etc.).
  • Page 7: Tire Pressure

    Attaching Control Rod Slot Head Screw,Nut_, & FiatWashers • Makesurethe handleassemblyisin the highest position.Referto KnowYourTiller section. • Removehairpinclipsfrom control rod,(rubber washersto remainon controlrod). • Insertthe shorter,(angled),end of the control rod throughthe indicatorbracketon the shift coverand securewith hairpinclip that was previouslyremoved. See Figure3-5.
  • Page 8: Knowyour Tiller

    /++_..-- ..,......LI):i; ¸ A "k Gear SelectionHandle..KnoWYour Handle Adjustment Tiller Depth Stake WARNING Make certain unit is in NEUTRAL when starting the engine. Figure 4-1 Gear Selection Handle iMPORTANT: Use the reversefine drivewhentilling virginground,sod, or hard soil. Usethe forwardtine drive Thegear selectionhandle is locatedin the centerof whencultivatingor tilling softground.
  • Page 9 Clutch Control The clutchcontrolis locatedbeneaththe handle. Squeezingthe clutchcontrol againstthe handleengages the wheeland fine drivemechanisms. NOTE: Neverengageclutchleverwhileshifting. KnowYour Handle Adjustment Lock iller The handlemay be adjustedto the heightdesired. Loosenthe handleheightadjustmentlock a few turns. Pivothandleup or downto desiredposition.Tightenlock. Throttle Control The throttlecontrolleveris located on the engine.It controlstheengine speedand stopstheengine.
  • Page 10: Before Starting

    Setting The Depth all instructionsand warningson the ma- ARNING:Read,understand, and follow Tillingdepthis controlledby the depthstakewhichcan be chine and in this manual before operating. adjustedto five differentsettings.Adjustthe side shields Before Starting as youadjust thedepth stake. Gas And Oil Fill-Up disconnected and groundedagainst the ARNING: Be certainspark plug wire is Servicethe enginewith gasolineand oil as instructed i n engine when performingany adjustments.
  • Page 11: Making Adjustments

    Toadjustthedepthstake,remove theclevispinand hairpin Belt Tension Adjustment clip. Movethe depthstaketo the desiredsettingand Periodicadjustmentof the belttensionmay be required securewiththe clevispin and hairpinclip.See Figure5-1. due to normalstretchand wearon the belt. Adjustment isneededif the tines or wheelsseemto hesitatewhile Toadjust the sideshields,removethe wingnuts. Move the side shieldto thedesiredpositionand replacethe turning,butthe enginemaintainsthe samespeed.
  • Page 12: Belt Replacement

    Cleaning Tine Area wire and groundit against the engine Cleanthe undersideof the fine shieldafter eachuse. ARNING: Disconnect t he spark plug before performingany repairs. Thedirt washesoff the tines easierif rinsedoff im- Engine mediatelyinsteadof after it dries.Alwaystowel dry the tillerafterwardsand applya lightcoat of oil or siliconeto Referto the separateengine manualforengine preventrustingor waterdamage.
  • Page 13: Off-Season Storage

    • Removethe beltkeeperbracketlocatedbehindthe Idler PulleyRod enginepulleyby removingtwo hex boltsand lock washers.See Figure8-1. • Removebeltand reassemble new belt. Follow instructions in reverseorder. NOTE: Uponreassembly, m akecertain the beltis routedoverthe idler pulleyand inside of belt keepersby enginepulley.See Figure8-1. Off-Season Storage If thetillerwillnotbeusedfora period longer than30 days, Belt Keeper thefollowing stepsshouldbetakentoprepare thetillerfor Bracket...
  • Page 14 53 35...
  • Page 15: Parts List

    iiii _ Parts List 611-04074 WheelShaft Ass'y33T 717-1594 SpurGear 16T Seal 1.0Shaft 611-0021 TineShaftAss'y: 18T 721-0378 Model 450 Seal.75Shaft 611-0128 JackShaftAss'y 721-0379 Series 611-0129 inputShaft Ass'y 726-0277 TaperCap Ring Compression Spring.50"Leg. 617-0058 Rev.IdlerGear Ass'y:30T 732-0496 ThrustWash.1.03"I.D.X. 1.62" 617-0059 TineIdlerGear Ass'y:30T 736-0163 FI-Wash.76"...
  • Page 17: Notes

    786-0090 Shoulder 747-1152 Shift Rod 649-0041 UpperHandleAss'y 786-0113 TineShieldHingeFlap 786-0176 RH HandleBracket 649-0034 LowerHandleAss'y 710-3005 HexScrew3/8-16x 1.25 786-0177 LH HandleBracket 710-3056 HexScrew5/16-18x 3.25 786-0178 TineShield illustrated 711-0415 ClevisPin 3/8-1.62 786-0179 TineShieldBracket 712-0379 FlangeLock Nut3/8-24 786-0180 ShoulderSpacerBracket Parts List 712-0429 Hex LockNut5/16-18 686-0109 Shift CrankAss'y 714-0147...
  • Page 18 Wheel shaft shown for reference only...
  • Page 19 iiii _ 786-0187 ShiftCoverBracket 686-0111 BeltCoverBracketAss'y 786-0193 IdlerBeltKeeper 710-0237 HexBolt5/16-24x .62" •28. 710-0412 HexBolt 1/4-28x .75" 634-04231 WheelAssembly16.0x 4.6 x 8 Parts List 710-0502A HexWasherScrew3/8-16x 1.25" 734-0808 Tire Only 16.2x 4.6 710-0152 HexBolt3/8-24x 1.0 634-04230 WheelRim Assembly 710-0599 HexWasherScrew 734-0255 Air Valve Model 450 710-0606...
  • Page 20 Problem Cause Remedy Enginefails to start Sparkplugwire disconneCte& Eui! tank emptyoi sta e fue!i 2 Fi!i!ank with €leanifresh gaso!ine 3, Throttlecontrol!ever not in correc t & Movethrottle !eve r to start position startingPosi ! on (i! equipped)4 MoVeieveitOON position: 4, Chokenotin ON position, 5 ciean fuel line 5! B!°cked!ue!!inei 61 c!eanl adjust gapl oireplace...
  • Page 21 this p_g_ to m_k_ notes and write down important information: 1-800_800,7310,or 1'330-220'4683, www,mtdproducts.com ii i _iI_ ii _iii _ii_i_i _!i i _iiiiiii_ii _i _ NOTE:specificationsare subject to changewithout notificationor obligationl Irnagesrnynot reflec t your exact modeland are for reference purposeson!y,...
  • Page 22 this page to make notes and write down For parts and/or accessories please call 1-800.800-7310,or 1-330-220-4683. www.mtdproducts.com NOTE:SPeCifications aie subject to changewithout notificationor obligation. Images my not reflectyour exact modeland are foi refeienCe purposeS only...
  • Page 23 notes and write down NOTE: Specifications are Subjectto changewithout i0tiication or obligationl !magesmy notreflectyour modeland are for referenCe purP0se sonly.
  • Page 24: Limited Warranty

    To locate the dealer in your area, check your Yellow Pages, lasts, sothe aboveexclusions or limitationsmaynot applyto you. or contact MTD LLC at RO. Box 361131,Cleveland, Ohio 44136- In no event shallrecoveryof any kindbe greaterthanthe amountof the 0019, or call 1-800-800-7310 or 1-330-220-4683 or log on to our purchasepriceof the productsold.Alterationof safety features of...

This manual is also suitable for:

Series 450

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