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Page: 1

OPERATOR'S MANUAL Rear Tine Tiller Model Series 450 IMPORTANT : READ SAFETY RULES AND INSTRUCTIONS CAREFULLY Warning : This unit is equipped with an internal combustion engine and should not be used on or near any unimproved forest _ covered , brush - covered or grass - covered land unless the engine's exhaust system is equipped with a spark arrester meeting applicable local or state laws ( if any ) . If a spark arrester is used , it should be maintained in effective working order by the operator . In the State of California the above is required by law ( Section 4442 of the California Public Resources Code ) . Other states may have similar laws . Federal laws apply on federal lands . A spark arrester for the muffler is available through your nearest engine authorized service dealer or contact the service department , P . O . Box 361131 Cleveland , Ohio 44136 - 0019 . MTD LLC , P . O . BOX 361131 CLEVELAND , OHIO 44136 - 0019 PRINTED IN U . S . A . FORM NO . 770 - 10137E ( 11 / 2001 )
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TABLEOFCONTENTS Content Page Important Safe Operation Practices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Assembling Your Tiller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Know Your Tiller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Operating Your Tiller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Making Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Maintaining Your Tiller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 FINDINGMODELNUMBER This Operator's Manual is an important part of your new Tiller . It will help you assemble , prepare and maintain the unit for best performance . Please read and understand what it says . Before you start assembling your new equipment , please locate the model plate on the equipment and copy the information from it in the space provided below . The information on the model plate is very important if you need help from our Customer Support Department or an authorized dealer . You can locate the model number by standing in the operating position behind the unit and looking down at the center of the rear tine cover . A sample model plate is explained below . For future reference , please copy the model number and the serial number of the equipment in the space below . Copy the model number here : Copy the serial number here : ENGINEINFORMATION The engine manufacturer is responsible for all engine - related issues with regards to performance , power - rating , specifications , warranty and service . Please refer to the engine manufacturer's Owner's / Operator's Manual packed separately with your unit for more information . CONTACTINGCUSTOMERSUPPORT If you have difficulty assembling this product or have any questions regarding the controls , operation or maintenance of this unit , please call the Customer Support Department . Call 1 - ( 330 ) 220 - 4MTD ( 4683 ) or 1 - ( 800 ) - 800 - 7310 to reach a Customer Support representative . Please have your unit's model number and serial number ready when you call . See previous section to locate this information . You will be asked to enter the serial number in order to process your call .
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SECTION1 : IMPORTANTSAFEOPERATIONPRACTICES WARNING : This symbol points out important safety instructions which , if not followed , could endanger the personal safety and / or property of yourself and others . Read and follow all instructions in this manual before attempting to operate this machine . Failure to comply with these instructions may result in personal injury . When you see this symbol - heed its warning . components contain or emit chemicals known to State of California to cause cancer , _ WARNING : Engine Exhaust , some of its constituents , and certain vehicle 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 . 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 . Failure to observe the following safety instructions could result in serious injury or death . spilled on yourself or your clothes which can ignite . Training Wash your skin and change clothes immediately . 1 . Read , understand , and follow all instructions on the 7 . Use only an approved gasoline container . machine and in the manual ( s ) before attempting to 8 . Extinguish all cigarettes , cigars , pipes and other assemble and operate . Keep this manual in a safe sources of ignition . place for future and regular reference and for 9 . Never fuel machine indoors . ordering replacement parts . 10 . Never remove gas cap or add fuel while the engine 2 . Be familiar with all controls and their proper is hot or running . operation . Know how to stop the machine and 11 . Allow engine to cool at least two minutes before disengage them quickly . refueling . 3 . Never allow children under 14 years old to operate 12 . Never over fill fuel tank . Fill tank to no more than ½ this machine . Children 14 years old and over should inch below bottom of filler neck to provide space for read and understand the operation instructions and fuel expansion . safety rules in this manual and should be trained 13 . Replace gasoline cap and tighten securely . and supervised by a parent . 14 . If gasoline is spilled , wipe it off the engine and 4 . Never allow adults to operate this machine without equipment . Move machine to another area . Wait 5 proper instruction . minutes before starting the engine . 5 . Keep bystanders , helpers , pets and children at least 15 . Never store the machine or fuel container inside 75 feet from the machine while it is in operation . near an open flame , spark or pilot light ( e . g . Stop machine if anyone enters the area . furnace , water or space heater , clothes dryer etc . ) . 16 . Allow machine to cool 5 minutes before stodng . Preparation 1 . Thoroughly inspect the area where the equipment is Operation to be used . Remove all stones , sticks , wire , and 1 . Do not put hands or feet near rotating parts . Contact other foreign objects which could be tripped over with the rotating parts can amputate hands and feet . and cause personal injury . 2 . Do not operate machine while under the influence 2 . Wear sturdy , rough - soled work shoes and close of alcohol or drugs . fitting slacks and shirt . Loose fitting clothes or 3 . Never operate this machine without good visibility jewelry can be caught in movable parts . Never or light . Always be sure of your footing and keep a operate this machine in bare feet or sandals . firm hold on the handles . 3 . Disengage clutch levers and shift ( if provided ) into 4 . Keep bystanders , helpers , pets , and children at neutral ( " N " ) before starting the engine . least 75 feet from the machine while it is in 4 . Never leave this machine unattended with the operation . Stop the machine if anyone enters the engine running . area . 5 . Never attempt to make any adjustments while 5 . Be careful when tilling in hard ground . The tines engine is running , except where specifically may catch in the ground and propel the tiller recommended in the operator's manual . forward . If this occurs , let go of the handle bars and 6 . To avoid personal injury or property damage use do not restrain the machine . extreme care in handling gasoline . Gasoline is 6 . Exercise extreme caution when operating on or extremely flammable and the vapors are explosive . crossing gravel surfaces . Stay alert for hidden Serious personal injury can occur when gasoline is hazards or traffic . Do not carry passengers .
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7 . Never operate the machine at high transport 4 . Do not change the engine governor settings or speeds on hard or slippery surfaces . over - speed the engine . The governor controls the 8 . Exercise caution to avoid slipping or falling . maximum safe operating speed of the engine . 9 . Look down and behind and use care when in 5 . Maintain or replace safety and instruction labels , as reverse or pulling machine towards you . necessary . 10 . Start the engine according to the instructions found 6 . Follow this manual for safe loading , unloading , in this manual and keep feet well away from the transporting , and storage of this machine . tines at all times . 7 . Never store the machine or fuel container inside 11 . After striking a foreign object , stop the engine , where there is an open flame , spark or pilot light disconnect the spark plug wire and ground against such as a water heater , furnace , clothes dryer etc . the engine . Thoroughly inspect the machine for any 8 . Always refer to the operator's manual for proper damage . Repair the damage before starting and instructions on off - season storage . operating . 9 . If the fuel tank has to be drained , do this outdoors . 12 . Disengage all clutch levers and stop engine before 10 . Observe proper disposal laws and regulations for you leave the operating position ( behind the gas , oil , etc . to protect the environment . handles ) . Wait until the tines come to a complete stop before unclogging the tines , making any YourResponsibility adjustments , or inspections . 1 . Restrict the use of this power machine to persons 13 . Never run an engine indoors or in a poorly who read , understand and follow the warnings and ventilated area . Engine exhaust contains carbon instructions in this manual and on the machine . monoxide , an odorless and deadly gas . 2 . The safety label on the tiller is reproduced below for 14 . Muffler and engine become hot and can cause a your review . To ensure safe operation of the tiller , bum . Do not touch . follow the instructions on all labels closely . 15 . Use caution when tilling near fences , buildings and underground utilities . Rotating tines can cause property damage or personal injury . TO AVOID SERIOUS INJURY 16 . Do not overload machine capacity by attempting to READ3HE OPERATOR'SMANUAL . till soil to deep at to fast of a rate . KNOWLOCATIONANDFUNCTIO _ OFALL CONTitOLS . 17 . If the machine should start making an unusual noise KEEPALLSAFETYDEVICESAND or vibration , stop the engine , disconnect the spark SHIELDSINPLACEANDWORKING , NEVERALLOWCHILDRENOR plug wire and ground it against the engine . Inspect UNINSTRUCTEDADULTSTO thoroughly for damage . Repair any damage before OPERATETILLER . SHUTOFF ENGINE BEFORE starting and operating . UNCLOGGINGTINESOR MAKING 18 . Keep all shields , guards and safety devices in place REPAIRS . KEEPBYSTANDERSAWAYFROM and operating properly . MACHINE , 19 . Never pick up or carry machine while the engine is KEEPAWAYFROM ROTATING PARTS . running . USEEXTREMECAUTIONWHEN 20 . Use only attachments and accessories approved by REVERSINGOR PULLINGTHE MACHINETOWARDSYOU , the manufacturer . Failure to do so , can result in personal injury . 21 . If situations occur which are not covered in this manual , use care and good judgment . Contact your dealer or telephone 1 - 800 - 800 - 7310 for assistance and the name of your nearest servicing dealer . Maintenance & Storage 1 . Never tamper with safety devices . Check their $ 30159 proper operation regularly . 2 . Check bolts and screws for proper tightness at frequent intervals to keep the machine in safe working condition . Also , visually inspect machine for any damage . 3 . Before cleaning , repairing , or inspecting , stop the engine and make certain the tines and all moving parts have stopped . Disconnect the spark plug wire and ground it against the engine to prevent unintended starting .
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SECTION2 : ASSEMBLINGYOURTILLER NOTE : References to right or left side of the tiller are Flat Washer Hex Bolt determined from behind the unit in the operating T - Knob / / t ' _ position . \ I / 1 " 1 _ _ Hairpin Clip ToRemoveUnitFromCarton Remove staples , break glue on top flaps , or cut tape at carton end and peel along top flap to open carton . _ _ _ ClevisPin " J Remove loose parts included with unit ( i . e . , operator's manual , etc . ) . Cut corners and lay carton down flat . Remove packing material . Roll or slide unit out of carton . Check carton thoroughly for loose parts . Depth Stak _ Extend control cable and lay on the floor . Be careful not to bend or kink control cable . Figure 1 IMPORTANT : This unit is shipped without gasoline or oil in the engine . Be certain to service engine with gasoline and oil as instructed in the separate engine manual AttachingHandleAssembly before operating your machine . Remove top two bolts and flange lock nuts from handle mounting brackets , but do not remove the LoosePartsInCarton bottom bolt and nut . See Figure 2 . Place handle assembly in position between the Depth Stake handle mounting brackets . Handle Assembly Line up holes in handle with holes in bracket and Shift Rod secure with hardware previously removed . NOTE : All hardware needed for assembly is attached to the loose parts or the tiller . Remove BeforeAssembly Assembly Handle A WARNING : Disconnect the spark tplugo wire and ground it against the engine Bracket prevent unintended starting , AttachingDepthStake Tip the tiller forward so it rests on front counterweight . Unthread the " T " knob from the top of the depth stake and remove the flat washer and hex bolt . Remove the hairpin clip from the clevis pin . Figure 2 See Figure 1 . Raise the tine shield hinge flap assembly and insert the depth stake assembly in the slot ( under the tine AttachingClutchCable shield ) and up through the tine shield assembly . Attach the clutch cable to the handle as follows : Insert clevis pin through the tine shield and depth ( be careful not to kink the cable ) stake assemblies . Secure with hairpin clip . Remove threaded eyebolt and nut from the end of Insert hex bolt into the top hole of the depth stake the cable . assembly . Place flat washer on the hex bolt and Route the clutch cable to the right side of the thread " T " knob onto the hex bolt . Tighten securely . handle mounting brackets and underneath the See Figure 1 . handle . Tip the tiller back down so it rests on the tines .
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Pushthecablethroughtheholeinthecenterofthe Remove hairpin clips from control rod , ( rubber handleandsnapintheplasticfitting . SeeFigure3 . washers to remain on control rod ) . Insert the shorter , ( angled ) , end of the control rod through the indicator bracket on the shift cover and Slot Head Screw , Nut , secure with hairpin clip that was previously & Flat Washers removed . See Figure 5 . Insert the longer end of the control rod through the Internally Threaded Tube hole in the gear selector handle and secure with hairpin clip . See Figure 6 . Rubber d Rod Figure 3 Remove slot head screw , nut , and two flat washers Figure 5 from the clutch bail . See Figure 4 . Fasten the threaded eyebolt onto bail by securing FinalClutchAdjustment from top with slot head screw , flat washers and lock nut . IMPORTANT : Service the engine with oil and gasoline Thread eyebolt and nut removed earlier into the before checking this adjustment . Refer to the separate internally threaded tube at the end of the cable . engine manual packed with your tiller for proper fuel Thread engagement should be about 3 / 4 " . Tighten and engine oil recommendations . nut against tube at end of cable . See Figure 4 . Position the tiller so the front counterweight is against a solid object , such as a wall . With the gear selection Slot Head Screw lever in NEUTRAL , start the engine . Refer to the Clutch Control _ Flat Washers separate engine manual . Standing on the right side of the tiller , examine the belt ( inside the belt cover ) . It should not be turning . belt cover . , _ WARNING : Do not put fingers under the If the belt turns without bail engaged , adjust by unthreading the internallythreaded tube at the end of ly the cable a few turns clockwise ( when standing in Threaded Tube operator's position ) and then retighten the nut against the tube . Figure 4 Now move the shift lever to FORWARD position . Carefully engage the clutch by lifting the clutch control NOTE : Do not overtighten clutch cable . Too much bail against the handle . The wheels should spin . tension may cause it to break . If the wheels do not spin with the unit in forward , adjust by unthreading the tube at the end of the cable a clutch cable adjustment before operating few turns counter - clockwise ( when standing in , _ WARNING : Be certain to check the the tiller . operator's position ) and then retighten the nut against the tube . AttachingControlRod Recheck both adjustments , and readjust as necessary . Make sure the handle assembly is in the highest NOTE : A secondary cable adjustment is available if position . Refer to Know Your Tiller section . you reach the point that additional adjustment is
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neededR . emovethebeltcoverandmovethehexnuts the unit . Recommended operating tire pressure is at theotherendof thecabletowardsthe end of the approximately 20 p . s . i . ( check sidewall of tire for tire casing . Then readjust the hex nuts at the handle . manufacturer's recommended pressure ) . WARNING : Maximum tire pressure TirePressure under any circumstances is 30 p . s . i . Equal The tires on your unit may be over - inflated for shipping tire pressure should be maintained on purposes . Reduce the tire pressure before operating both tires . SECTION3 : KNOWYOURTILLER Handle Lock Figure 6 Tines Forward : Forward wheel and tine drive . GearSelectionHandle IMPORTANT : Use the reverse tine drive when tilling The gear selection handle is located in the center of the virgin ground , sod , or hard soil . Use the forward tine handle on the tiller . It is used to select NEUTRAL , drive when cultivating or tilling soft ground . REVERSE , or one of the FORWARD mode . Pull or push the handle so that the indicator on top of shift NOTE : If difficulty is encountered in moving the gear cover points to the operating mode desired . selection handle , refer to following helpful hints . To shift See Figure 6 . into forward or reverse wheel drive , move tiller forward Neutral slightly then backward to allow the gears to Transmission is in neutral . synchronize . Reverse To shift into forward wheels and tine drive , push Reverse wheel drive . forward slightly on the gear selection handle and slowly engage the clutch control allowing the gears to Forward Modes synchronize . To stop forward movement and tine drive , Wheels Forward : Forward wheel drive only . release the clutch control . Do not shift gears with the Tines Reverse : Forward wheel drive and reverse tine clutch control engaged except when engaging the drive . tines .
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ChokeLever ( . Equipped ) NEUTRAL when starting the engine . _ lb WARNING : Make certain unit is in The choke lever is located by the throttle . It is used to endch the fuel mixture in the carburetor when starting a cold engine . ClutchControl PrimerButton ( ifEquipped ) The clutch control is located beneath the handle . The primer button is located behind the air cleaner . It is Squeezing the clutch control against the handle used to enrich the fuel mixture in the carburetor when engages the wheel and tine ddve mechanisms . starting a cold engine . NOTE : Never engage clutch lever while shifting . DepthStake HandleAdjustmenLt ock The depth stake controls the tilling depth . Refer to The handle may be adjusted to the height desired . " Setting the Depth " in the Operating Section . Loosen the handle height adjustment lock a few turns . Pivot handle up or down to desired position . Tighten EngineControls lock . See the separate engine manual for additional information and functions of the engine controls . ThrottleControl The throttle control lever is located on the engine . It controls the engine speed and stops the engine . SECTION4 : OPERATINGYOURTILLER Move choke lever to CHOKE position or if equipped , push pdmer two ( 2 ) or three ( 3 ) times . follow all instructions and warnings on the , _ WARNING : Read , understand , andre Wait about two ( 2 ) seconds between each push . machine and in this manual befo operating . NOTE : A warm engine may not require choking or to be primed . BeforeStarting Stand at side of tiller . Grasp the starter handle and pull out slowly , until it pulls slightly harder . Let rope GasAnd OilFill - Up rewind slowly . Service the engine with gasoline and oil as instructed in Pull starter handle rapidly . Do not allow handle to the separate engine manual packed with your tiller . snap back . Allow it to rewind slowly while keeping a firm hold on the starter handle . Read instructions carefully . Repeat previous steps until engine starts . As engine warms up and begins to operate evenly , handling gasoline . Gasoline is extremely _ lb WARNING : Use extreme care when move choke lever gradually to RUN position . If flammable and the vapors are explosive . engine falters , return to choke position , then slowly Never fuel machine indoors or while the move to RUN position . engine is hot or running . Refer to engine manual for additional engine information . StartingEngine NOTE : After starting and prior to using the tiller for the first time , be certain to check the clutch adjustment as NOTE : When pushing the unit with the engine off , you described in " Checking the Clutch Adjustment " section will hear a ratcheting sound ( gear noise ) which is of the Assembly Instructions . normal . ToStopEngine in front of the tiller while the engine is , _ WARNING : Be sure no one is standing Move throttle control to STOP or OFF position . running or being started . Disconnect spark plug wire and ground to prevent Place gear selection lever in NEUTRAL . accidentally starting while equipment is Place the throttle control lever in FAST position or if unattended . equipped , place the engine speed control in the START position .
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When tilling loose soil , the depth stake may be NOTE : After the first ten hours of operation , recheck raised to its highest position ( use bottom the clutch adjustment . Refer to final clutch adjustment adjustment hole ) to give the deepest tilling depth . in Assembly Instructions . Raise the side shields to their highest position . To transport tiller , lower the depth stake ( use top SettingTheDepth adjustment hole ) . Tilling depth is controlled by the depth stake which can To adjust the depth stake , remove the clevis pin and be adjusted to five different settings . Adjust the side hairpin clip . Move the depth stake to the desired setting shields as you adjust the depth stake . and secure with the clevis pin and hairpin clip . See Figure 7 . To adjust the side shields , remove the wing nuts . Move disconnected and grounded against the , _ WARNING : Be certain spark plug wire . is the side shield to the desired position and replace the engine when performing any adjustments wing nuts . Tighten securely . When using the tiller for the first time , use the second adjustment hole from the top ( 1 " of tilling OperatingtheTiller depth ) . See Figure 7 . Select the depth stake setting . Start engine as instructed on the previous page . Use This Position _ / / Move gear selection handle to one of the forward First Time \ _ / , . Transport Position modes or reverse . Clevis F " " nn " ' _ _ _ 3 " WARNING : Do not move the gear selection handle with the wheels or tines engaged . Make certain the unit is stopped completely before changing the gear selection . A partial engagement may be necessary when engaging tines . • $ N IMPORTANT : Use the reverse tine drive when tilling virgin ground , sod , or hard soil . Use the forward tine drive when cultivating or tilling soft ground . Squeeze the clutch handle against the handle to engage the wheels and tines . NOTE : Make certain the gear selection indicator is correctly positioned before engaging the clutch handle . Use This Hole For If it is between gears , the engine will stall . Lowest ( Shallowest ) Position To transport tiller , do not engage the tines . Select the \ wheel drive only . WARNING : Do not push down on the handles so that the wheels are lifted off the ground while using the tine drive , or the tiller could move backward and cause personal injury . For best results , it is recommended the garden be tilled _ Use This Hole For twice ( lengthwise , then widthwise ) to pulverize the soil . Highest ( Deepest ) Position Figure 7 When breaking up sod and for shallow cultivation , use the setting which gives 1 " of tillingdepth ( second hole from the top ) . Place the side shields in their lowest position . For further depth , raise the depth stake and side shields and also make one or two more passes over the area .
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SECTION5 : MAKINGADJUSTMENTS off and the clutch control bail disengaged , shift the gear WARNING : Never attempt to make any selection handle to each forward mode . If the indicator adjustments while the engine is running , bracket touches the idler pulley rod ( with the clutch except where specified in operator's manual . control bail disengaged ) , then an adjustment is necessary . Disconnect and ground out spark plug wire against HandleAdjustment the engine . The handle height may be adjusted to the desired Remove the belt cover as described under Belt height . Refer to the handle adjustment in Know Your Replacement in the Maintenance section . Tiller section . Remove the hairpin clip and spring washer from the idler pulley rod . Refer to Figure 9 . BeltTensionAdjustment Move the idler pulley rod to the lower hole in the idler bracket . Periodic adjustment of the belt tension may be required due to normal stretch and wear on the belt . Adjustment Replace the spring washer and hairpin clip . is needed if the tines or wheels seem to hesitate while Check clearance of the idler pulley rod to the turning , but the engine maintains the same speed . indicator bracket by shifting to each forward mode , as before . To adjust the tension on the belt , refer to Final Clutch Adjustment in Assembly Instructions . EngineAdjustment After belt tension has been adjusted , if the belt is excessively stretched , you may need to adjust the idler Refer to the separate engine manual for engine pulley rod . This can easily be checked . With the engine adjustment instructions . SECTION6 : MAINTAININGYOURTILLER permit proper air circulation which is essential to engine WARNING : Disconnect the spark plug performance and life . Be certain to remove all dirt and wire and ground it against the engine combustible debris from muffler area . before performing any repairs or maintenance . Lubrication Engine Transmission Refer to the separate engine manual for engine The transmission is pre - lubricated and sealed at the maintenance instructions . factory . It requires no checking unless the transmission Maintain engine oil as instructed in the separate is disassembled . To fill with grease , lay the right half of the transmission on its side , add 22 ounces of engine manual packed with your unit . Read and follow instructions carefully . Benaiene 920 grease , and assemble the left half to it . This grease can be obtained at your nearest authorized Service air cleaner every ten hours under normal dealer by ordering part number 737 - 0300 . conditions . Clean every hour under extremely dusty ClutchHandle conditions . Poor engine performance and flooding usually indicates that the air cleaner should be Lubricate the pivot point on the clutch handle and the serviced . To service the air cleaner , refer to the cable at least once a season with light oil . The control separate engine manual packed with your unit . must operate freely in both directions . Pivot Points IMPORTANT : Never run your engine without air cleaner completely assembled . Lubricate all pivot points and linkages at least once a season with light oil . The spark plug should be cleaned and the gap reset Tine Shafts every 25 hours of engine operation . Spark plug replacement is recommended at the start of each tiller Remove tine assemblies and lubricate the tine shafts at season ; check engine manual for correct plug type and least once a season . gap specification . Wheel Shafts Clean the engine regularly with a cloth or brush . Keep Remove wheel assemblies and lubricate the axle shafts the cooling system ( blower housing area ) clean to at least once a season . 10
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CleaningTineArea Clean the underside of the tine shield after each use . The dirt washes off the tines easier if rinsed off Idler Puny Rod immediately instead of after it dries . Always towel dry the tiller afterwards and apply a light coat of oil or silicone to prevent rusting or water damage . IMPORTANT : Never use a " pressure washer " to clean your tiller . Water can penetrate tight areas of the tiller and its chaincase and cause serious damage to the unit . Pun ' - _ = = = = = = = = = _ Belt Keeper Idler Bracket BeltReplacement Bracket Figure 9 Your tiller has been engineered with a belt made of special material ( Kevlar Tensile ) for longer life and better performance . It should not be replaced with an Off - SeasoSntorage off - the - shelf belt . Order all belts through you authorized If the tiller will not be used for a period longer than 30 service dealer . days , the following steps should be taken to prepare the Disconnect and ground the spark plug wire against tiller for storage . the engine . Clean the exterior of engine and the entire tiller Remove the belt cover from the left side of the tiller thoroughly . Lubricate the tiller as described in the by remove two torx screws from the top of belt lubrication instructions . cover . See Figure 8 . We do not recommend the use of pressure Remove the hex cap nut and flat washer from the washers to clean your unit . They may cause side of the belt cover and remove the self tap screw damage to electric components , spindles , pulleys , at the bottom of the front of the cover . bearings or the engine . The use of pressure washers will result in shortened life and reduce serviceability . Torx Screws Belt Cover Refer to the engine manual for correct engine storage instructions . Wipe tines with oiled rag to prevent rust . Store tiller in a clean , dry area . Do not store next to corrosive materials , such as fertilizer . NOTE : When storing any type of power equipment in an unventilated or metal storage shed , care should be taken to rustproof the equipment . Using a light oil or silicone , coat the equipment and especially any springs , bearings , and cables . Figure 8 Remove the belt keeper bracket located behind the engine pulley by removing two hex bolts and lock washers . See Figure 9 . Remove belt and reassemble new belt . Follow instructions in reverse order . NOTE : Upon reassembly , make certain the belt is routed over the idler pulley and inside of belt keepers by engine pulley . See Figure 9 . 11
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SECTION7 : TROUBLESHOOTINGGUIDE Corrective Action Trouble Possible Cause ( s ) Engine fails to Fuel tank empty , or stale fuel . Fill tank with clean , fresh gasoline . Fuel will not last over start thirty days unless a fuel stabilizer is used . Throttle control lever not in correct Move throttle lever to start position . starting position ( if so equipped ) . Blocked fuel line . Clean fuel line . Dirty aircleaner . Refer to the engine manual packed with your unit . Choke not in ON position . Move switch to ON position . Spark plug wire disconnected . Connect wire to spark plug . Faulty spark plug . Clean , adjust gap or replace . Engine flooded . Refer to the engine manual packed with your unit . Engine runs Unit running on CHOKE . Move choke lever to OFF position . erratic Spark plug wire loose . Connect and tighten spark plug wire . Blocked fuel line or stale fuel . Clean fuel line ; fill tank with clean , fresh gasoline . Fuel will not last over thirty days unless a fuel stabilizer is used . Clear vent . Vent in gas cap plugged . Drain fuel tank . Refin with fresh fuel . Water or dirt in fuel system . Dirty air cleaner . Refer to the engine manual packed with your unit . Carburetor out of adjustment . Refer to the engine manual packed with your unit . Engine over - Engine oil level low . Fill crankcase with proper oil . heats Dirty air cleaner . Refer to the engine manual packed with your unit . Air flow restricted . Refer to the engine manual packed with your unit . Carburetor not adjusted properly . Adjust carburetor as instructed in separate engine manual . Tines do not Foreign object lodged in tines . Dislodge foreign object . Tine clevis pin ( s ) missing . Replace tine clevis pin ( s ) . engage Take unit to authorized service dealer . Pulley and idler not in correct adjustment . Not shifting properly . Refer to Controls section of operator's manual for proper shifting procedures . Control cable not adjusted properly . Adjust control cable ( see assembly instructions ) . Belt worn and / or stretched . Replace belt . Tines skip over Improper rotation . Forward rotation should only be used on soil that has ground already been tilled , not on virgin soil . Wheels do not Clevis pin missing . Replace clevis pin . engage Tiller is not being shifted properly . Refer to Controls section of operator's manual for proper shifting procedures . Control cable not adjusted properly . Adjust control cable ( see assembly instructions ) . Belt worn and / or stretched . Replace belt . NOTE : For repairs beyond the minor adjustments above , contact your local authorized service dealer . 12
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Notes 13
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ModelSeries450 6 29 53 / 46 1 28 17 8 14 14
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ModelSeries450 Ref . Ref . Part No . Part No . Part Description Part Description No . No . 1 . 611 - 0020 717 - 1594 Spur Gear 16T Wheel Shaft Ass'y 33T 27 . Seal 1.0 Shaft 2 . 611 - 0021 72 % 0378 Tine Shaft Ass'y : 18T 28 . 3 . 611 - 0128 72 % 0379 Seal . 75 Shaft Jack Shaft Ass'y . 29 . 4 . 611 - 0129 31 . 726 - 0277 Input Shaft Ass'y Taper Cap Ring 5 . 617 - 0058 32 . 732 - 0496 Rev . Idler Gear Ass'y : 30T Compression Spring . 50 " Lg . 6 . 617 - 0059 33 . 736 - 0163 Thrust Wash . 1.03 " I . D . x 1.62 " Ftine Idler Gear Ass'y : 30T 7 . 617 - 0060 34 . 736 - 0351 FI - Wash . 76 " I . D . x 1.5 " O . D . Tine Input Sprocket Ass'y : 9T 8 . 617 - 0061 35 . 736 - 0407 Wheel Input Sprocket Ass'y : 10T Bell - Wash . 45 " I . D . x 1.0 " 9 . 617 - 0062 36 . 736 - 0518 Thrust Wash . . 445 x 1.92 x . 060 Gear Ass'y : 11T 10 . 37 . 736 - 3088 FI - Wash . . 635 " I . D . x 1.59 O . D . 686 - 0108 R . H . Housing Ass'y 11 . 710 - 0376 40 . 738 - 0645 Detent Shaft 1 / 2 " Dia . Hex Bolt 5 / 16 - 18 x 1 " Lg . 12 . 710 - 0599 Jack Shaft . 625 x 2.385 Hex S - Tap Scr . 1 / 4 - 20 x . 5 " 41 . 738 - 0648 Jack Shaft . 625 x 5.0 13 . 710 - 0604A 738 - 1013 Hex S - Tap Scr . 5 / 16 - 18 x . 625 " 42 . 14 . 710 - 3008 Hex Bolt 5 / 16 - 18 x . 75 " 43 . Ball Bearing 741 - 0124 44 . 15 . 711 - 1349 741 - 0420 Input Shaft Flange Bearing 1.0 x 2.5 x 1.38 16 . 712 - 0378 Hex Nut 7 / 16 - 20 45 . 741 - 0421 Flange Bearing . 75 x 2.5 x 1.38 17 . 712 - 3004A 741 - 0563 Flange Nut 5 / 16 - 18 46 . Ball Bearing . 6692 x 5745 x . 466 18 . # 420 Chain 1 / 2 Pitch x 50 Links 47 . 741 - 0862 Detent Ball . 250 713 - 0367 # 50 Chain 5 / 8 Pitch x 54 Links 48 . 19 . 713 - 0484 750 - 0258 Spacer . 315 20 . 750 - 0570 Spacer 1.0 I . D x 2.00 . D . x . 440 716 - 0865 Snap Ring . 49 . 21 . 717 - 0853 750 - 0664 Shifting Fork 50 . Spacer . 505 I . D . x . 88 O . D . x . 440 22 . 750 - 0671 Spur Gear44T ' 51 . Spacer . 75 x 2.0 x . 50 717 - 1582 23 . 717 - 1583 786 - 0171 Spur Gear 30T 52 . L . H . Chain Case Ass'y 24 . 717 - 1584 Spur Gear 30T 53 . 786 - 0238 Gear Positioner Bracket 717 - 1585 25 . Spur Gear 44T 686 - 0107 Gear Case Assembly Complete 26 . 717 - 1587 Spur Gear 44T 15
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Model450 Series 67 62 37 14 \ \ 36 / 42 / 28 50 59 _ 51 / 53 . 65 , 55 16
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Model450 Series Ref . Ref . Part No . Part Description Part Description No . Part No . No . Shift Rod 34 . 750 - 0885 1 . 747 - 1152 Spacer . 435 OD x . 322 ID 2 . 649 - 0041 Shoulder Upper Handle Ass'y 35 . 786 - 0090 3 . 649 - 0034 Lower Handle Ass'y 36 . 786 - 0113 Tine Shield Hinge Flap Hex Screw 3 / 8 - 16 x 1.25 ' 37 . 786 - 0176 4 . RH Handle Bracket 710 - 3005 5 . 710 - 3056 Hex Screw 5 / 16 - 18 x 3.25 38 . 786 - 0177 LH Handle Bracket 6 . 711 - 0415 Clevis Pin 3 / 8 - 1.62 39 . 786 - 0178 Tine Shield 7 . 712 - 0379 Tine Shield Bracket Flange Lock Nut 3 / 8 - 24 40 . 786 - 0179 8 . 712 - 0429 Hex Lock Nut 5 / 16 - 18 41 . 786 - 0180 Shoulder Spacer Bracket 9 . 714 - 0147 Cotter Pin 42 . 686 - 0109 Shift Crank Ass'y 10 . Screw 1 / 4 - 14 x . 625 720 - 0313 Grip 44 . 710 - 1017 11 . 720 - 0210A T - Knob 46 . 715 - 0120 Spiral Pin 3 / 16 x 1.0 12 . 720 - 0278A Foam Grip 49 . 784 - 0208C Shift Cover Clevis Pin 14 . 726 - 0317 Cable Tie 50 . 711 - 0415 15 . 735 - 0246 Hex Nut 3 / 8 - 24 Plug 51 . 712 - 3054 16 . 736 - 0117 Flat Washer 3 / 8 ID x . 620 OD 53 . 742 - 0305 13 " Articulating Tine 17 . Bell Washer . 340 ID x . 872 OD 54 . 738 - 0689 736 - 0242 Shoulder Bolt 18 . 738 - 0958 Flat Washer . 51 " ID x 1.50 " OD Shoulder Spacer 55 . 736 - 0208 19 . 784 - 0190 Bell Washer . 515 " ID x 1.14 " OD Handle Adjustment Crank 56 . 736 - 0253 20 . 784 - 0191 Hex Nut Retainer Bracket 57 . Shoulder Bolt 738 - 0688 21 . 786 - 0120 784 - 0160 Depth Stake ' 58 . Tine Adapter Ass'y 22 . 747 - 1219 714 - 0149B Bail Clutch , 59 . Internal Cotter Pin 23 . 786 - 0181 Shift Lever Rod 60 . 735 - 0127 Rubber Washer 24 . 686 - 0044A 714 - 0104 Cotter Pin Tine Shield Cover Ass'y 61 . 25 . 710 - 0176 710 - 3022 Hex Screw 3 / 8 - 16 x 2.75 " Hex Cap Screw 5 / 16 - 18 x 2.75 62 . 26 . 710 - 3008 Flat Washer Hex Cap Screw 5 / 16 - 18 x . 750 63 . 736 - 0204 27 . 710 - 3097 712 - 0431 Flange Nut . 344 ID x . 62 OD Carriage Bolt 3 / 8 - 16 x 1.0 64 . 736 - 0169 28 . 712 - 0421 Lock Washer Wing Nut 65 . Hex Nut 3 / 8 - 16 Lock Washer 3 / 8 66 . 29 . 736 - 0169 712 - 0798 30 . 712 - 3004A 710 - 0946 Truss Screw 1 / 4 - 20 x . 65 Flange Nut 5 / 16 - 18 67 . Hex Lock Nut 1 / 4 - 20 712 - 0324 31 . 726 - 0106 Cap Nut 68 . 32 . 738 - 0849 Hex Screw 5 / 16 - 18 x . 75 " 69 . 726 - 0273 Battery Hose Clamp 5 / 16 33 . 747 - 0432 Rod 70 . 736 - 3090 Flat Washer . 260 ID x . 720 OD 17
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Model450 Series / 24 / 15 / 3 ! " 4o \ " 37 18
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Model450 Series Ref . Ref . Part No . Part No . Part Description Part Description No . No . 1 . 686 - 0111 27 . 786 - 0187 Shift Cover Bracket Belt Cover Bracket Ass'y 2 . 710 - 0237 Hex Bolt 5 / 16 - 24 x . 62 " 28 . 786 - 0193 Idler Belt Keeper 3 . 710 - 0412 Hex Bolt 1 / 4 - 28 x . 75 " 29 . 634 - 0110 Wheel Assembly RH 14.0 x 4.5 t 4 . 710 - 0502A Hex Washer Screw 3 / 8 - 16 x 1.25 " 634 - 0106 Wheel Assembly RH l & 0 x 4.6 tt Hex Bolt 3 / 8 - 24 x 1.0 5 , 716 - 0591 634 - 0111 Wheel Assembly LH 14.0 x 4,5 t 6 , 710 - 0599 Hex Washer Screw 634 - 0107 Wheel Assembly LH 16.0 x 4,6 t t 7 . 710 - 0723 734 - 1796 Hex Cap Screw 3 / 8 - 16 x 1.25 Tire Only 14.0 x 4.5 t 8 . 712 - 0266 Lock Jam Nut 3 / 8 - 16 734 - 0808 Tire Only 16.2 x 4.6 tt 9 . 712 - 0267 Hex Nut 5 / 16 - 16 30 . 634 - 0112 Wheel Rim Assembly t 10 . 714 - 0104 Internal Cotter Pin 634 - 0108 Wheel Rim Assembly tt 11 _ 736 - 0104 31 . 734 - 0255 Air Valve Hairpin Clip 32 . 711 - 1017 12 . 736 - 0119 Lock Washer 5 / 16 " Clevis Pin 13 . 736 - 0176 Flat Washer , 25 ID x . 93 OD 33 . 714 - 0104 Internal Cotter Pin 34 . 710 - 0382 Hex Bolt 1 / 2 - 13 x 5.0 14 . 736 - 0271 Spring Washer . 317 ID x . 625 OD l & 736 - 0329 Lock Washer 1 / 4 " ID 35 . 712 - 0206 Hex Nut 1 / 2 - 13 16 . 736 - 0452 Bell Washer . 396 ID x 1.14 OD 36 . 723 - 0381 Counterweight 17 . 738 - 0876 Shoulder Nut 7 / 16 - 20 37 . 736 - 0326 Flat Washer . 510 ID x 1.00D 18 . 746 - 1117 Clutch Cable 38 . 736 - 0921 Lock Washer 1 / 2 19 . 747 - 1159 39 . 710 - 0653 Hex Screw 1 / 4 - 20 x . 375 Idler Pulley Rod 20 . 754 - 0434 40 . 710 - 1017 Screw 1 / 4 - 14 x . 625 V - Belt 21 . 756 - 0405 41 . 712 - 0392 Lock Nut Flat Idler w / Flange 3.75 OD 22 . 756 - 0971 Outer Engine Pulley Half 42 . 736 - 0463 Flat Washer . 250 ID x . 620OD 23 . 756 - 0972 43 . 784 - 0158A Belt Cover Inner Engine Pulley Half 24 . 756 - 1162 44 . 710 - 0805 Hex Bolt 5 / 16 - 18 x 1.5 Input Pulley Bell Washer . 340 ID x . 872 OD 25 . 786 - 0064A Idler Bracket 45 . 736 - 0242 26 . 785 - 0185 Belt Keeper Bracket t . 46 . 712 - 3010 Hex Nut 5 / 16 - 16 786 - 0186 Belt Keeper Bracket t t 1 " Model Series 453 t t Model Series 454 NOTE : For painted parts , please refer to the list of color codes below . Please add the applicable color code wherever needed , to the part number to order a replacement part . For instance , if a part numbered 700 - xxxx is painted Oyster Gray , the part number to order would be 700 - xxxx - 0662 . Black 0691 : Black . _ owder - - 0637 : Blue . Midnight - - 0667 : Charcoal - - 0483 : Grey - - 0648 : Grey , Oyster - - 0662 ; Orange - - 0606 : Red - - 0650 ; Red , MTD - - 0638 ; Silver - - 0629 ; Yellow - - 0674 . 19
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MANUFACTURER'S LIMITED WARRANTY FOR : The limited warranty set forth below is given by MTD LLC with d . MTD LLC does net extend any warranty for products respect to new merchandise purchased and used in the sold or exported outside of the United States , its posses - United States , its possessions and territories . sions and territories , except those sold through MTD LLC's authorized channels of export distribution . MTD LLC warrants this product against defects for a period of e . Parts that are not genuine MTD parts are not covered by two ( 2 ) years commencing on the date of original purchase this warranty . and will , at its option , repair or replace , free of charge , any f . Service completed by someone other than an authorized part found to be defective in materials or workmanship . This service dealer is not covered by this warranty . limited warranty shall only apply if this product has been oper - g . Transportation charges and service calls are not ated and maintained in accordance with the Operator's Man - covered . ual furnished with the product , and has not been subject to misuse , abuse , commercial use , neglect , accident , improper No implied warranty , including any implied warranty of maintenance , alteration , vandalism , theft , fire , water , or dam - merchantability of fitness for a particular purpose , age because of other peril or natural disaster . Damage applies after the applicable period of express written resulting from the installation or use of any accessory or warranty above as to the parts as identified . No other attachment not approved by MTD LLC for use with the prod - express warranty , whether written or oral , except as men * uct ( s ) covered by this manual will void your warranty as to tioned above , given by any person or entity , including a any resulting damage . dealer or retailer , with respect to any product , shall bind MTD LLC . During the period of the warranty , the exclu - Normal wear parts or components thereof are subject to sep - sive remedy is repair or replacement of the product as arate terms as follows : All normal wear parts or component set forth above . failures will be covered on the product for a period of 90 days regardless of cause . After 90 days , but within the two year The provisions as set forth in this warranty provide the period , normal wear part failures will be covered ONLY IF sole and exclusive remedy arising from the sale . MTD caused by defects in materials or workmanship of OTHER LLC shall not be liable for incidental or consequential component parts . Normal wear parts and components loss or damage including , without limitation , expenses include , but are not limited to : batteries , belts , blades , blade incurred for substitute or replacement lawn care services adapters , grass bags , rider deck wheels , seats , snow thrower or for rental expenses to temporarily replace a warranted skid shoes , shave plates , auger spiral rubber , tires . product . HOW TO OBTAIN SERVICE : Warranty service is available , Some states do not allow the exclusion or limitation of inci - WITH PROOF OF PURCHASE , through your local autho - dental or consequential damages , or limitations on how long rized service dealer . To locate the dealer in your area , check an implied warranty lasts , so the above exclusions or limita - your Yellow Pages , or contact MTD LLC at RO . Box 361131 , tions may not apply to you . Cleveland , Ohio 44136 - 0019 , 1 - 800 - 800 - 7310 , 1 - 330 - 220 - 4683 or log on to our Web site at www . mtdproducts . cem . In no event shall recovery of any kind be greater than the amount of the purchase price of the product sold . Alteration This limited warranty does not provide coverage in the follow - of safety features of the product shall void this warranty . ing cases : You assume the risk and liability for loss , damage , or injury to a . The engine or component parts thereof . These items you and your property and / or to others and their property carry a separate manufacturer's warranty . Refer to the arising out of the misuse or inability to use the product . applicable manufacturer's warranty for terms and condi - tions . This limited warranty shall not extend to anyone other than b . Log splitter pumps , valves , and cylinders have a sepa - the original purchaser or to the person for whom it was pur - rate one year warranty . chased as a gift . c . Routine maintenance items such as lubricants , filters , HOW STATE LAW RELATES TO THIS WARRANTY : This blade sharpening , tune - ups , brake adjustments , clutch limited warranty gives you specific legal rights , and you adjustments , deck adjustments , and normal deterioration may also have other rights which vary from state to state . of the exterior finish due to use or exposure . MTD LLC , P . O . BOX 361131 CLEVELAND , OHIO 44136 - 0019 1 - 800 - 800 - 7310
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