MTD 450, 460 User Manual

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Safety • Assembly • Operation • Tips & Techniques • Maintenance • Troubleshooting • Parts Lists • Warranty

OPERATOR’S MANUAL

Rear Tine Tiller – Model Series 450

IMPORTANT

READ SAFETY RULES AND INSTRUCTIONS CAREFULLY BEFORE OPERATION

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.

PRINTED IN U.S.A

MTD LLC, P.O. BOX 361131 CLEVELAND, OHIO 44136-0019

FORM NO. 769-02193C

03/16/2007

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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.

Table of Contents

Safety Labels ...................................................... 3

Safe Operation Practices ................................... 4

Assembling Your Tiller ........................................ 6

Know Your Tiller .................................................. 8

Operating Your Tiller ......................................... 10

Making Adjustments ........................................ 11

Maintaining Your Tiller ...................................... 12

Off Season Storage .......................................... 13

Parts List ........................................................... 14

Troubleshooting ................................................ 20

Notes .................................................................. 21

Warranty .............................................Back Cover

Finding and Recording Model Number

BEFORE YOU BEGIN 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 looking at the rear of the tine shield. This information is important for use when visiting the manufacturer’s web site, obtaining assistance from the Customer Support Department, or when communicating with an authorized service dealer.

Model Number Serial Number

Customer Support

Please do

purchased, without ﬁrst contacting Customer Support.

If you have difficulty assembling this product or have any questions regarding the controls, operation, or maintenance of this unit, you can seek help from the experts. Choose from the options below:

1. Visit

2. Phone a

3. The

mtdproducts.com. Click on the Service & Support menu option.

Customer Support Representative at 1 (800) 800-7310.

engine manufacturer is responsible for all engine-related issues with regards to performance, power-rating, specifica-

tions, warranty and service. Please refer to the engine manufacturer’s Owner’s/Operator’s Manual, packed separately with your unit, for more information.

NOT

return the unit to the retailer from which it was

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WARNING

Hot surfaces can

cause severe burns.

Do not touch

muffler or

adjacent areas.

74 6

0 3S

WARNING

Hot surfaces can

cause severe burns.

Do not touch

muffler or

adjacent areas.

74 6

0 3S

WARNING

KEEP AWAY FROM

ROTATING TINES.

ROTATING TINES

WILL CAUSE INJURY.

DEPTH

DEPTH STAKE

STAKE

TRANSPORT

1" 3"

3" 5"

5" 7"

WARNING

TO AVOID SERIOUS INJURY

1. READ THE OPERATOR'S MANUAL.

2. KNOW LOCATION AND FUNCTIONS

OF ALL CONTROLS.

3. KEEP ALL SAFETY DEVICES AND

3. KEEP ALL SAFETY DEVICES AND SHIELDS IN PLACE AND WORKING.

SHIELDS IN PLACE AND WORKING.

4. NEVER ALLOW CHILDREN OR

4. NEVER ALLOW CHILDREN OR UNINSTRUCTED ADULTS TO

UNINSTRUCTED ADULTS TO

OPERATE TILLER.

5. SHUT OFF ENGINE BEFORE

U NCLOGGING TINES OR MAKING

U NCLOGGING TINES OR MAKING REPAIRS.

REPAIRS.

6. KEEP BYSTANDERS AWAY FROM

6. KEEP BYSTANDERS AWAY FROM M ACHINE.

M ACHINE.

7. KEEP AWAY FROM ROTATING

7. KEEP AWAY FROM ROTATING PARTS.

PARTS.

8. USE EXTREME CAUTION WHEN

8. USE EXTREME CAUTION WHEN R EVERSING OR PULLING THE

R EVERSING OR PULLING THE M ACHINE TOWARDS YOU.

M ACHINE TOWARDS YOU.

S32146

Safety

Labels

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!

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.

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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.

Safe

Operation

Practices

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!

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.

Never remove gas cap or add fuel while the engine

Training

Read, understand, and follow all instructions on the

• machine and in the manual(s) before attempting to assemble and operate. Keep this manual in a safe place for future and regular reference and for ordering replacement parts.

Be familiar with all controls and their proper operation.

• Know how to stop the machine.

Never allow children under 14 years old to operate

• this machine. Children 14 years old and over should read and understand the operation instructions and safety rules in this manual and should be trained and supervised by a parent.

Never allow adults to operate this machine without

• proper instruction.

Keep bystanders, helpers, pets, and children at least

• 75 feet from the machine while it is in operation. Stop machine if anyone enters the area.

Preparation

Thoroughly inspect the area where the equipment is

• to be used. Remove all stones, sticks, wire, and other foreign objects which could be tripped over and cause personal injury.

Wear sturdy, rough-soled work shoes and close

• fitting slacks and shirt. Loose fitting clothes or jewelry can be caught in movable parts. Never operate this machine in bare feet or sandals.

Disengage clutch levers and shift (if provided) into

• neutral (“N” ) before starting the engine.

Never leave this machine unattended with the engine

• running.

Never attempt to make any adjustments while engine

• is running, except where specifically recommended in the operator’s manual.

To avoid personal injury or property damage use

• extreme care in handling gasoline. Gasoline is extremely flammable and the vapors are explosive. Serious personal injury can occur when gasoline is spilled on yourself or your clothes which can ignite. Wash your skin and change clothes immediately.

Use only an approved gasoline container.

•

Extinguish all cigarettes, cigars, pipes and other

• sources of ignition.

Never fuel machine indoors.

•

• is hot or running.

Allow engine to cool at least two minutes before

• refueling

Never over fill fuel tank. Fill tank to no more than ½

• inch below bottom of filler neck to provide space for fuel expansion.

Replace gasoline cap and tighten securely.

•

If gasoline is spilled, wipe it off the engine and

• equipment. Move machine to another area. Wait five minutes before starting the engine.

Never store the machine or fuel container inside

• near an open flame, spark or pilot light (e.g. furnace, water or space heater, clothes dryer, etc.).

Allow machine to cool five minutes before storing.

•

Operation

Do not put hands or feet near rotating parts. Contact

• with the rotating parts can amputate hands and feet.

Do not operate machine while under the influence of

• alcohol or drugs.

Never operate this machine without good visibility or

• light. Always be sure of your footing and keep a firm hold on the handles.

Keep bystanders, helpers, pets, and children at least

• 75 feet from the machine while it is in operation. Stop the machine if anyone enters the area.

Be careful when tilling in hard ground. The tines may

• catch in the ground and propel the tiller forward. If this occurs, let go of the handle bars and do not restrain the machine.

Exercise extreme caution when operating on or

• crossing gravel surfaces. Stay alert for hidden hazards or traffic.

Never operate the machine at high transport speeds

• on hard or slippery surfaces.

Exercise caution to avoid slipping or falling.

•

Look down and behind and use care when in reverse

• or pulling machine towards you.

Start the engine according to the instructions found

• in this manual and keep feet well away from the tines at all times.

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After striking a foreign object, stop the engine,

• disconnect the spark plug wire and ground against the engine Thoroughly inspect the machine for any damage. Repair the damage before starting and operating.

Disengage all clutch levers (if fitted) and stop engine

• before you leave the operating position (behind the handles). Wait until the tines come to a complete stop before unclogging the tines, making any adjustments, or inspections.

Never run an engine indoors or in a poorly ventilated

• area. Engine exhaust contains carbon monoxide, an odorless and deadly gas.

Muffler and engine become hot and can cause a

• burn. Do not touch.

Use caution when tilling near fences, buildings and

• underground utilities. Rotating tines can cause property damage or personal injury.

Do not overload machine capacity by attempting to

• till soil too deep at too fast of a rate.

If the machine should start making an unusual noise

• or vibration, stop the engine, disconnect the spark plug wire and ground it against the engine. Inspect thoroughly for damage. Repair any damage before starting and operating.

Keep all shields, guards, and safety devices in place

• and operating properly.

Never pick up or carry machine while the engine is

• running.

Use only attachments and accessories approved

• by the manufacturer. Failure to do so can result in personal injury.

If situations occur which are not covered in this

• manual, use care and good judgment. Contact your dealer or call the customer service number found on page two.

Maintenance & Storage

Never tamper with safety devices. Check their

• proper operation regularly.

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.

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.

Do not change the engine governor settings or

• over-speed the engine. The governor controls the maximum safe operating speed of the engine.

Maintain or replace safety and instruction labels,

• as necessary.

Follow this manual for safe loading, unloading,

• transporting, and storage of this machine.

Never store the machine or fuel container inside

• where there is an open flame, spark or pilot light such as a water heater, furnace, clothes dryer, etc.

Always refer to the operator’s manual for proper

• instructions on off-season storage.

If the fuel tank has to be drained, do this outdoors.

•

Observe proper disposal laws and regulations for

• gas, oil, etc. to protect the environment.

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.

The safety labels on the tiller are shown in the

• “Safety Labels” section. To ensure safe operation of the tiller, follow the instructions on all labels closely.

Safe

Operation

Practices

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!

Page 6

Assembling

Your Tiller

WARNING

Disconnect the spark plug wire and ground it against the engine to prevent unintended starting.

Be certain to check the clutch cable adjustment before operating the tiller.

NOTE: Specifications are subject to change without notification or obligation. Images my not reflect your exact model and are for reference purposes only.

NOTE: References to right or left side of the tiller are determined from behind the unit in the operating position.

To Remove Unit From Carton

• Remove staples, break glue on top flaps, or cut tape at carton end and peel along top flap to open carton.

• 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.

• Extend control cable and lay on the floor. Be careful not to bend or kink control cable.

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 before operating your machine.

Loose Parts In Carton

• Depth Stake

• Handle Assembly

• Shift Rod

NOTE: All hardware needed for assembly is attached to the loose parts or the tiller.

Before Assembly

WARNING: Disconnect the spark plug wire and ground it against the engine to prevent unintended starting.

Attaching Depth Stake

• 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. See Figure 3-1.

• Raise the tine shield hinge flap assembly and insert the depth stake assembly in the slot (under the tine shield) and up through the tine shield assembly.

• Insert clevis pin through the tine shield and depth stake assemblies. Secure with hairpin clip.

• Insert a hex bolt into top hole of the depth stake assembly. Place flat washer on the hex bolt and thread “T” knob onto the hex bolt. Tighten securely. See Figure 3-1.

• Tip the tiller back down so it rests on the tines.

Attaching Handle Assembly

• Remove top two bolts and flange lock nuts from handle mounting brackets, but do not remove the bottom bolt and nut. See Figure 3-2.

• Place handle assembly in position between the handle mounting brackets.

• Line up holes in handle with holes in bracket and secure with hardware previously removed.

Attaching Clutch Cable

Attach the clutch cable to the handle as follows: (be careful not to kink the cable)

Flat Washer

T-Knob

Clevis Pin

Depth Stake

• Remove threaded eyebolt and nut from the cable end.

• Route the clutch cable to the right side of the handle mounting brackets and underneath the handle.

• Push the cable through the hole in the center of the handle and snap in the plastic fitting. See Figure 3-3.

• Remove slot head screw, nut, and two flat washers from the clutch bail. See Figure 3-4.

• Fasten the threaded eyebolt onto bail by securing from top with slot head screw, flat washers and lock nut.

• Thread eyebolt and nut removed earlier into the internally threaded tube at the end of the cable. Thread engagement should be about 3/4”. Tighten nut against tube at end of cable. See Figure 3-4.

NOTE: Do not overtighten clutch cable. Too much tension may cause it to break.

WARNING: Be certain to check the clutch cable adjustment before operating the tiller.

Hex Bolt

Figure 3-1

Remove

Figure 3-2

Hairpin Clip

Handle Assembly

Handle Bracket

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Clutch Control

Rubber Washer

Internally Threaded Tube

Figure 3-3

Threaded Eyebolt

Figure 3- 4

Slot Head Screw, Nut, & Flat Washers

Plastic Fitting

Slot Head Screw

Flat Washers

Nut

Internally Threaded Tube

Control Rod

Indicator Bracket

Attaching Control Rod

• Make sure the handle assembly is in the highest position. Refer to Know Your Tiller section.

• Remove hairpin clips from control rod, (rubber washers to remain on control rod).

• Insert the shorter, (angled), end of the control rod through the indicator bracket on the shift cover and secure with hairpin clip that was previously removed. See Figure 3-5.

• Insert the longer end of the control rod through the hole in the gear selector handle and secure with hairpin clip.

Final Clutch Adjustment

IMPORTANT: Service the engine with oil and gasoline before checking this adjustment. Refer to the separate engine manual packed with your tiller for proper fuel and engine oil recommendations.

Position the tiller so the front counterweight is against a solid object, such as a wall. With the gear selection lever in NEUTRAL, start the engine. Refer to the separate engine manual.

Standing on the right side of the tiller, examine the belt (inside the belt cover). It should not be turning.

WARNING: Do not put your fingers under the belt cover.

If the belt turns without bail engaged, adjust by

unthreading the internally threaded tube at the end of the cable a few turns clockwise (when standing in operator’s position) and then retighten the nut against the tube.

Now move the shift lever to FORWARD position.

Carefully engage the clutch by lifting the clutch control bail against the handle. The wheels should spin.

If the wheels do not spin with the unit in forward, adjust by unthreading the tube at the end of the cable a few turns counter-clockwise (when standing in operator’s position) and then retighten the nut against the tube.

Recheck both adjustments, and readjust as necessary.

NOTE: A secondary cable adjustment is available if you reach the point that additional adjustment is needed. Remove the belt cover and move the hex nuts at the other end of the cable towards the end of the casing. Then readjust the hex nuts at the handle.

Assembling

Your Tiller

WARNING

Do not put your fingers under the belt cover.

Maximum tire pressure under any circumstances is 30 p.s.i. Equal tire pressure should be maintained on both tires.

Idler Pulley Rod

Figure 3-5

Hairpin Clip

Tire Pressure

The tires on your unit may be over-inflated for shipping purposes. Reduce the tire pressure before operating the unit. Recommended operating tire pressure is approximately 20 p.s.i. (check sidewall of tire for tire manufacturer’s recommended pressure).

WARNING: Maximum tire pressure under any circumstances is 30 p.s.i. Equal tire pressure should be maintained on both tires.

NOTE: Specifications are subject to change without notification or obligation. Images my not reflect your exact model and are for reference purposes only.

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Clutch Control

Know Your

Tiller

WARNING

Make certain unit is in NEUTRAL when starting the engine.

Gear Selection Handle

Handle Adjustment Lock

Depth Stake

NOTE: Specifications are subject to change without notification or obligation. Images my not reflect your exact model and are for reference purposes only.

Note: Bumper Styles vary by model.

Figure 4-1

Gear Selection Handle

The gear selection handle is located in the center of the handle on the tiller. It is used to select NEUTRAL, REVERSE, or one of the FORWARD mode. Pull or push the handle so that the indicator on top of shift cover points to the operating mode desired. See Figure 4-1.

Neutral

Transmission is in neutral.

Reverse

Reverse wheel drive.

Forward Modes

Wheels Forward: Forward wheel drive only. Tines Reverse: Forward wheel drive and reverse tine

drive.

Tines Forward: Forward wheel and tine drive.

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.

NOTE: If difficulty is encountered in moving the gear selection handle, refer to following helpful hints. To shift into forward or reverse wheel drive, move tiller forward slightly then backward to allow the gears to synchronize.

To shift into forward wheels and tine drive, push forward slightly on the gear selection handle and slowly engage the clutch control allowing the gears to synchronize. To stop forward movement and tine drive, release the clutch control. Do not shift gears with the clutch control engaged except when engaging the tines.

WARNING: Make certain unit is in NEUTRAL when starting the engine.

Page 9

Clutch Control

The clutch control is located beneath the handle. Squeezing the clutch control against the handle engages the wheel and tine drive mechanisms.

NOTE: Never engage clutch lever while shifting.

Handle Adjustment Lock

The handle may be adjusted to the height desired. Loosen the handle height adjustment lock a few turns. Pivot handle up or down to desired position. Tighten lock.

Throttle Control

The throttle control lever is located on the engine. It controls the engine speed and stops the engine.

Choke Lever (If Equipped)

The choke lever is located by the throttle. It is used to enrich the fuel mixture in the carburetor when starting a cold engine.

Primer Button (If Equipped)

The primer button is located behind the air cleaner. It is used to enrich the fuel mixture in the carburetor when starting a cold engine.

Depth Stake

The depth stake controls the tilling depth. Refer to ‘‘Setting the Depth’’ in the Operating Section.

Engine Controls

See the separate engine manual for additional information and functions of the engine controls.

Know Your

Tiller

WARNING

HEED ITS WARNING!

NOTE: Specifications are subject to change without notification or obligation. Images my not reflect your exact model and are for reference purposes only.

Page 10

Operating Your Tiller

WARNING

Read, understand, and follow all instructions and warnings on the machine and in this manual before operating.

Use extreme care when handling gasoline. Gasoline is extremely flammable and the vapors are explosive. Never fuel machine indoors or while the engine is hot or running.

Be sure no one is standing in front of the tiller while the engine is running or being started.

Be certain spark plug wire is disconnected and grounded against the engine when performing any adjustments.

WARNING: Read, understand, and follow all instructions and warnings on the machine and in this manual before operating.

Before Starting

Gas And Oil Fill-Up

Service the engine with gasoline and oil as instructed in the separate engine manual packed with your tiller. Read instructions carefully.

WARNING: Use extreme care when handling gasoline. Gasoline is extremely flammable and the vapors are explosive. Never fuel machine indoors or while the engine is hot or running.

Starting Engine

NOTE: When pushing the unit with the engine off, you will hear a ratcheting sound (gear noise) which is normal.

WARNING: Be sure no one is standing in front of the tiller while the engine is running or being started.

• Place gear selection lever in NEUTRAL.

• Place the throttle control lever in FAST position or if equipped, place the engine speed control in the START position.

• Move choke lever to CHOKE position or if equipped, push primer two (2) or three (3) times. Wait about two (2) seconds between each push.

NOTE: A warm engine may not require choking or priming.

• Stand at side of tiller. Grasp the starter handle and pull out slowly, until it pulls slightly harder. Let rope rewind slowly.

• Pull starter handle rapidly. Do not allow handle to snap back. Allow it to rewind slowly while keeping a firm hold on the starter handle.

• Repeat previous steps until engine starts.

• As engine warms up and begins to operate evenly, move choke lever gradually to RUN position. If engine falters, return to choke position, then slowly move to RUN position.

• Refer to engine manual for additional engine information.

NOTE: After starting and prior to using the tiller for the first time, be certain to check the clutch adjustment as described in “Checking the Clutch Adjustment” section of the Assembly Instructions.

To Stop Engine

• Move throttle control to STOP or OFF position.

• Disconnect spark plug wire and ground to prevent accidentally starting while equipment is unattended.

NOTE: After the first ten hours of operation, recheck the clutch adjustment. Refer to final clutch adjustment in Assembly Instructions.

Setting The Depth

Tilling depth is controlled by the depth stake which can be adjusted to five different settings. Adjust the side shields as you adjust the depth stake.

WARNING: Be certain spark plug wire is disconnected and grounded against the engine when performing any adjustments.

• When using the tiller for the first time, use the second adjustment hole from the top (1” of tilling depth). See Figure 5-1.

• When breaking up sod and for shallow cultivation, use

Use This Position First Time

Clevis Pin

Use This Hole for Lowest (shallowest) Postion

Figure 5-1

the setting which gives 1” of tilling depth (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.

• When tilling loose soil, the depth stake may be raised to its highest position (use bottom adjustment hole) to give the deepest tilling depth. Raise the side shields to their highest position.

• To transport tiller, lower the depth stake (use top adjustment hole).

Transport Postion

1”

3”

5”

7”

Side Sheild

Use This Hole for Highest (deepest) Postion

Page 11

To adjust the depth stake, remove the clevis pin and hairpin clip. Move the depth stake to the desired setting and secure with the clevis pin and hairpin clip. See Figure 5-1.

To adjust the side shields, remove the wing nuts. Move the side shield to the desired position and replace the wing nuts. Tighten securely.

Operating the Tiller

• Select the depth stake setting.

• Start engine as instructed on the previous page.

• Move gear selection handle to one of the forward modes or reverse.

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.

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. If it is between gears, the engine will stall.

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 twice (lengthwise, then width-wise) to pulverize the soil.

Making Adjustments

WARNING: Never attempt to make any adjustments while the engine is running, except where specified in operator’s manual.

Handle Adjustment

The handle height may be adjusted to the desired height. Refer to the handle adjustment in Know Your Tiller section.

Belt Tension Adjustment

Periodic adjustment of the belt tension may be required due to normal stretch and wear on the belt. Adjustment is needed if the tines or wheels seem to hesitate while turning, but the engine maintains the same speed.

To adjust the tension on the belt, refer to Final Clutch Adjustment in Assembly Instructions.

After belt tension has been adjusted, if the belt is excessively stretched, you may need to adjust the idler pulley rod. This can easily be checked.

With the engine off and the clutch control bail disengaged, shift the gear selection handle to each forward mode. If the indicator bracket touches the idler pulley rod (with the clutch control bail disengaged), then an adjustment is necessary.

• Disconnect and ground out spark plug wire against the engine.

• Remove the belt cover as described under Belt Replacement in the Maintenance section.

• Remove the hairpin clip and spring washer from the idler pulley rod. Refer to Figure 9.

• Move the idler pulley rod to the lower hole in the idler bracket.

• Replace the spring washer and hairpin clip.

• Check clearance of the idler pulley rod to the indicator bracket by shifting to each forward mode, as before.

Engine Adjustment

Refer to the separate engine manual for engine adjustment instructions.

NOTE: Specifications are subject to change without notification or obligation. Images my not reflect your exact model and are for reference purposes only.

Making

Adjustments

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.

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.

Never attempt to make any adjustments while the engine is running, except where specified in operator’s manual.

Page 12

Maintaining

Your Tiller

WARNING

Disconnect the spark plug wire and ground it against the engine before performing any repairs or maintenance.

WARNING: Disconnect the spark plug wire and ground it against the engine before performing any repairs.

Engine

Refer to the separate engine manual for engine maintenance instructions.

Maintain engine oil as instructed in the separate engine manual packed with your unit. Read and follow instructions carefully.

Service air cleaner every ten hours under normal conditions. Clean every hour under extremely dusty conditions. Poor engine performance and flooding usually indicates that the air cleaner should be serviced. To service the air cleaner, refer to the separate engine manual packed with your unit.

IMPORTANT: Never run your engine without air cleaner completely assembled.

The spark plug should be cleaned and the gap reset every 25 hours of engine operation. Spark plug replacement is recommended at the start of each tiller season; check engine manual for correct plug type and gap specification.

Clean the engine regularly with a cloth or brush. Keep the cooling system (blower housing area) clean to permit proper air circulation which is essential to engine performance and life. Be certain to remove all dirt and combustible debris from muffler area.

Cleaning Tine Area

Clean the underside of the tine shield after each use. The dirt washes off the tines easier if rinsed off 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 chain case and cause serious damage to the unit.

Belt Replacement

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-the-shelf belt. Order all belts through you authorized service dealer.

• Disconnect and ground the spark plug wire against the engine.

• Remove the belt cover from the left side of the tiller by remove two torx screws from the top of belt cover. See Figure 7-1.

Torx Screws

Hex Cap Nut & Flat Washer

Belt Cover

NOTE: Specifications are subject to change without notification or obligation. Images my not reflect your exact model and are for reference purposes only.

Lubrication

Transmission

The transmission is pre-lubricated and sealed at the factory. It requires no checking unless the transmission is disassembled. To fill with grease, lay the right half of the transmission on its side, add 22 ounces of Benalene 920 grease, and assemble the left half to it. This grease can be obtained at your nearest authorized dealer by ordering part number 737-0300.

Clutch Handle

Lubricate the pivot point on the clutch handle and the cable at least once a season with light oil. The control must operate freely in both directions.

Pivot Points

Lubricate all pivot points and linkages at least once a season with light oil.

Tine Shafts

Remove tine assemblies and lubricate the tine shafts at least once a season.

Wheel Shafts

Remove wheel assemblies and lubricate the axle shafts at least once a season.

Self Tap Screw

Figure 7-1

• Remove the hex cap nut and flat washer from the side of the belt cover and remove the self tap screw at the bottom of the front of the cover.

Page 13

Engine Pulley

Idler Pulley Rod

Belt Keeper Bracket

Figure 8-1

Idler Bracket

• Remove the belt keeper bracket located behind the engine pulley by removing two hex bolts and lock washers. See Figure 8-1.

• 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 8-1.

Off-Season Storage

If the tiller will not be used for a period longer than 30 days, the following steps should be taken to prepare the tiller for storage.

• Clean the exterior of engine and the entire tiller thoroughly. Lubricate the tiller as described in the lubrication instructions.

• We do not recommend the use of pressure washers to clean your unit. They may cause damage to electric components, spindles, pulleys, bearings or the engine. The use of pressure washers will result in shortened life and reduce serviceability.

• 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.

Off-Season

Storage

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.

NOTE: Specifications are subject to change without notification or obligation. Images my not reflect your exact model and are for reference purposes only.

Page 14

Page 15

Ref. Part No. Part Description

1. 611-04074 Wheel Shaft Ass’y 33T

2. 611-0021 Tine Shaft Ass’y: 18T

3. 611-0128 Jack Shaft Ass’y

4. 611-0129 Input Shaft Ass’y

5. 617-0058 Rev. Idler Gear Ass’y: 30T

6. 617-0059 Tine Idler Gear Ass’y: 30T

7. 617-0060 Tine Input Sprocket Ass’y: 9T

8. 617-0061 Wheel Input Sprocket Ass’y: 10T

9. 617-0062 Gear Ass’y: 11T

10. 686-0108 R.H. Housing Ass’y

11. 710-0376 Hex Bolt 5/16-18 x 1” Lg.

12. 710-0599 Hex S-Tap Scr. 1/4- 20 x.5”

13. 710-0604A Hex S-Tap Scr. 5/16-18 x.625”

14. 710-3008 Hex Bolt 5/16-18 x.75”

15. 711-1349 Input Shaft

16. 712-0378 Hex Nut 7/16-20

17. 712-3004A Flange Nut 5/16-18

18. 713-0367 #420 Chain 1/2 Pitch x 50 Links

19. 713-0484 #50 Chain 5/8 Pitch x 54 Links

20. 716-0865 Snap Ring

21. 717-0853 Shifting Fork

22. 717-1582 Spur Gear 44T

23. 717-1583 Spur Gear 30T

24. 717-1584 Spur Gear 30T

25. 717-1585 Spur Gear 44T

26. 717-1587 Spur Gear 44T

Ref. Part No. Part Description

27. 717-1594 Spur Gear 16T

28. 721-0378 Seal 1.0 Shaft

29. 721-0379 Seal.75 Shaft

31. 726-0277 Taper Cap Ring

32. 732-0496 Compression Spring.50” Leg.

33. 736-0163 Thrust Wash. 1.03” I.D. X. 1.62”

34. 736-0351 Fl-Wash.76” I.D. x 1.5” O.D.

35. 736-0407 Bell-Wash .45” I.D. x 1.0”

36. 736-0518 Thrust Wash. .445 x 1.92 x .060

37. 736-3088 Fl-Wash. .635” I.D. x 1.59 O.D.

40. 738-0645 Detent Shaft 1/2” Dia.

41. 738-0648 Jack Shaft .625 x 2.385

42. 738-1013 Jack Shaft .625 x 5.0

43. 741-0124 Ball Bearing

44. 741-0420 Flange Bearing 1.0 x 2.5 x 1.38

45. 741-0421 Flange Bearing .75 x 2.5 x 1.38

46. 741-0563 Ball Bearing . 6692 x 5745 x .466

47. 741-0862 Detent Ball .250

48. 750-0258 Spacer .315

49. 750-0570 Spacer 1.0 I.D x 2.0 O.D. x .440

50. 750-0664 Spacer .505 I.D. x .88 O.D. x .440

51. 750-0671 Spacer .75 x 2.0 x .50

52. 786-0171 L.H. Chain Case Ass’y

53. 786-0238 Gear Positioner Bracket

686-0107 Gear Case Assembly Complete

Illustrated

Parts List

Model 450

Series

To order replacement

parts, contact

1 (800) 800-7310

or visit

www.mtdproducts.com

Page 16

Page 17

Ref. Part No. Part Description

1. 747-1152 Shift Rod

2. 649-0041 Upper Handle Ass’y

3. 649-0034 Lower Handle Ass’y

4. 710-3005 Hex Screw 3/8-16 x 1.25

5. 710-3056 Hex Screw 5/16-18 x 3.25

6. 711-0415 Clevis Pin 3/8-1.62

7. 712-0379 Flange Lock Nut 3/8-24

8. 712-0429 Hex Lock Nut 5/16-18

9. 714-0147 Cotter Pin

10. 720-0313 Grip

11. 720-0210A T-Knob

12. 720-0278A Foam Grip

14. 726-0317 Cable Tie

15. 735-0246 Plug

16. 736-0117 Flat Washer 3/8 ID x .620 OD

17. 736-0242 Bell Washer .340 ID x .872 OD

18. 738-0958 Shoulder Spacer

19. 784-0190 Handle Adjustment Crank

20. 784-0191 Hex Nut Retainer Bracket

21. 786-0120 Depth Stake

22. 747-1219 Bail Clutch

23. 786-0181 Shift Lever Rod

24. 686-0044A Tine Shield Cover Ass’y

25. 710-0176 Hex Cap Screw 5/16-18 x 2.75

26. 710-3008 Hex Cap Screw 5/16-18 x .750

27. 710-3097 Carriage Bolt 3/8-16 x 1.0

28. 712-0421 Wing Nut

29. 736-0169 Lock Washer 3/8

30. 712-04063 Flange Nut 5/16-18

31. 726-0106 Cap Nut

32. 738-0849 Hex Screw 5/16-18 x .75”

33. 747-0432 Rod

34. 750-0885A Spacer .322 x .625 x 2.0

Ref. Part No. Part Description

35. 786-0090 Shoulder

36. 786-0113 Tine Shield Hinge Flap

37. 786-0176 RH Handle Bracket

38. 786-0177 LH Handle Bracket

39. 786-0178 Tine Shield

40. 786-0179 Tine Shield Bracket

41. 786-0180 Shoulder Spacer Bracket

42. 686-0109 Shift Crank Ass’y

44. 710-1017 Screw 1/4-14 x .625

46. 715-0120 Spiral Pin 3/16 x 1.0

49. 784-0208C Shift Cover

50. 711-0415 Clevis Pin

51. 712-3054 Hex Nut 3/8-24

53. 742-0305 13” Articulating Tine

54. 738-0689 Shoulder Bolt

55. 736-0208 Flat Washer .51” ID x 1.50” OD

56. 736-0253 Bell Washer .515” ID x 1.14” OD

57. 738-0688 Shoulder Bolt

58. 784-0160 Tine Adapter Ass’y 18”

59. 714-0149B Internal Cotter Pin

60. 735-0127 Rubber Washer

61. 714-0104 Cotter Pin

62. 710-3022 Hex Screw 3/8-16 x 2.75”

63. 736-0204 Flat Washer

64. 712-04065 Flange Nut 3/8-16

65. 736-0169 Lock Washer

66. 712-3017 Hex Nut 3/8-16

67. 710-0946 Truss Screw 1/4-20 x .65

68. 712-0324 Hex Lock Nut 1/4-20

69. 726-0273 Battery Hose Clamp 5/16

70. 736-3090 Flat Washer .260 ID x .720 OD

71. 784-0161 Tine Adapter Plate

Illustrated

Parts List

Model 450

Series

To order replacement

parts, contact

1 (800) 800-7310

or visit

www.mtdproducts.com

NOTE: Specifications are subject to change without notification or obligation. Images my not reflect your exact model and are for reference purposes only.

Page 18

Wheel shaft shown for reference only

Page 19

Ref. Part No. Part Description

1. 686-0111 Belt Cover Bracket Ass’y

2. 710-0237 Hex Bolt 5/16-24 x .62”

3. 710-0412 Hex Bolt 1/4-28 x .75”

4. 710-0502A Hex Washer Screw 3/8-16 x 1.25”

5. 710-0152 Hex Bolt 3/8-24 x 1.0

6. 710-0599 Hex Washer Screw

7. 710-0723 Hex Cap Screw 3/8-16 x 1.25

8. 712-0266 Lock Jam Nut 3/8-16

9. 712-0267 Hex Nut 5/16-18

10. 714-0104 Internal Cotter Pin

11. 736-0104 Hairpin Clip

12. 736-0119 Lock Washer 5/16”

13. 736-0176 Flat Washer .25 ID x .93 OD

14. 736-0271 Spring Washer .317 ID x .625 OD

15. 736-0329 Lock Washer 1/4” ID

16. 736-0452 Bell Washer .396 ID x 1.14 OD

17. 738-0876 Shoulder Nut 7/16-20

18. 746-1117 Clutch Cable

19. 747-1159 Idler Pulley Rod

20. 754-0434 V-Belt

21. 756-0405 Flat Idler w/Flange 3.75 OD

22. 756-0971 Outer Engine Pulley Half

23. 756-0972 Inner Engine Pulley Half

24. 756-1162 Input Pulley

25. 786-0064A Idler Bracket

26. 786-0185 Belt Keeper Bracket

Ref. Part No. Part Description

27. 786-0187 Shift Cover Bracket

28. 786-0193 Idler Belt Keeper

29. 634-04231 Wheel Assembly 16.0 x 4.6 x 8

734-0808 Tire Only 16.2 x 4.6

30. 634-04230 Wheel Rim Assembly

31. 734-0255 Air Valve

32. 710-0606 Hex Head Screw 1/4-20

33. 712-04064 Flange Lock Nut 1/4-20

34. 710-0515 Hex Bolt 1/2-20 x 3.50

35. 712-3066 Hex Nut 1/2-20

36. 686-0192 Bumper Assembly

37. 736-0326 Flat Washer

38. 736-0921 Lock Washer 1/2

39. 710-0653 Hex Screw 1/4-20 x .375

40. 710-1017 Screw 1/4-14 x .625

41. 712-0392 Lock Nut

42. 736-3020 Flat Washer .271 ID x .630 OD

43. 784-0158A Belt Cover

44. 736-0242 Bell Washer .340 ID x .872 OD

45. 737-0298 Straight Pipe 1/4-3.5”

46. 737-0132 End Cap

47. 710-0382 Hex Head Screw, 1/2-13 x 5.00

48. 736-0179 Flat Washer 1/2 x 1.25 x .10

49. 731-1595 Counterweight

50. 731-0381 Counterweight

51. 712-0206 Hex Nut, 1/2-13

Illustrated

Parts List

Model 450

Series

To order replacement

parts, contact

1 (800) 800-7310

or visit

www.mtdproducts.com

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 Red, the part number to order would be 700-xxxx-0638.

Red: 0638 Powder Black: 0637 Oyster Gray: 0662

NOTE: Specifications are subject to change without notification or obligation. Images my not reflect your exact model and are for reference purposes only.

Page 20

CauseProblem Remedy

Trouble

Shooting

For repairs beyond the minor adjustments listed here, contact an authorized service dealer.

Engine fails to start

Engine runs erratic

1. Spark plug wire disconnected.

2. Fuel tank empty or stale fuel.

3. Throttle control lever not in correct starting position (if equipped)

4. Choke not in ON position.

5. Blocked fuel line.

6. Faulty spark plug.

7. Engine flooding.

1. Spark plug wire loose.

2. Unit running on CHOKE.

3. Blocked fuel line or stale fuel.

4. Vent plugged.

5. Water or dirt in fuel system.

6. Dirty air cleaner.

7. Carburetor out of adjustment.

1. Connect wire to spark plug.

2. Fill tank with clean, fresh gasoline.

3. Move throttle lever to start position.

4. Move lever to ON position.

5. Clean fuel line.

6. Clean, adjust gap, or replace.

7. Wait a few minutes to restart, but do not prime (if equipped)

1. Connect and tighten spark plug wire.

2. Move choke lever to OFF.

3. Clean fuel line; fill tank with clean, fresh gasoline.

4. Clear vent.

5. Drain fuel tank. Refill with fresh fuel.

6. Clean following engine manual.

7. Refer to engine manual.

Engine overheats

Tines do no engage

1. Engine oil level low.

2. Dirty air filter.

3. Air flow restricted.

4. Carburetor not adjusted properly.

1. Foreign object lodged in tines.

2. Tine clevis pin(s) missing.

3. Belt worn and/or stretched.

4. Pulley and idler not in correct adjustment.

1. Fill crankcase with proper oil.

2. Clean air cleaner.

3. Remove blower housing and clean.

4. Refer to engine manual.

1. Stop tiller completely, check and discard foreign object.

2. Replace tine clevis pin (s).

3. Replace belt.

4. Take unit to authorized service

NOTE: Specifications are subject to change without notification or obligation. Images my not reflect your exact model and are for reference purposes only.

Page 21

NOTES:

Use this page to make

notes and write down

important information.

For parts and/or

accessories

please call

1-800-800-7310, or

1-330-220-4683.

www.mtdproducts.com

NOTE: Specifications are subject to change without notification or obligation. Images my not reflect your exact model and are for reference purposes only.

Page 22

NOTES:

Use this page to make

notes and write down

important information.

For parts and/or

accessories

please call

1-800-800-7310, or

1-330-220-4683.

www.mtdproducts.com

NOTE: Specifications are subject to change without notification or obligation. Images my not reflect your exact model and are for reference purposes only.

Page 23

NOTES:

Use this page to make

notes and write down

important information.

For parts and/or

accessories

please call

1-800-800-7310, or

1-330-220-4683.

www.mtdproducts.com

NOTE: Specifications are subject to change without notification or obligation. Images my not reflect your exact model and are for reference purposes only.

Page 24

MANUFACTURER’S LIMITED WARRANTY FOR

The limited warranty set forth below is given by MTD LLC with respect to new merchandise purchased and used in the United States, its possessions and territories. “MTD” warrants this product against defects in material and workmanship for a period of two (2) years commencing on the date of original purchase and will, at its option, repair or replace, free of charge, any part found to be defective in materials or workmanship. This limited warranty shall only apply if this product has been operated and maintained in accordance with the Operator’s Manual furnished with the product, and has not been subject to misuse, abuse, commercial use, neglect, accident, improper maintenance, alteration, vandalism, theft, fire, water, or damage because of other peril or natural disaster. Damage resulting from the installation or use of any part, accessory or attachment not approved by MTD for use with the product(s) covered by this manual will void your warranty as to any resulting damage. Normal wear parts are warranted to be free from defects in material and workmanship for a period of thirty (30) days from the date of purchase. Normal wear parts include, but are not limited to items such as: batteries, belts, blades, blade adapters, grass bags, rider deck wheels, seats, snow thrower skid shoes, shave plates, auger spiral rubber and tires. HOW 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 P.O. 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 limited warranty does not provide coverage in the following cases: a. The engine or component parts thereof. These items may carry a

separate manufacturer’s warranty. Refer to applicable manufacturer’s warranty for terms and conditions.

b. Log splitter pumps, valves, and cylinders have a separate one year

warranty.

c. Routine maintenance items such as lubricants, filters, blade

sharpening, tune-ups, brake adjustments, clutch adjustments, deck adjustments, and normal deterioration of the exterior finish due to use or exposure.

d. Service completed by someone other than an authorized service

dealer.

e. MTD does not extend any warranty for products sold or exported

outside of the United States, its possessions and territories, except those sold through MTD’s authorized channels of export distribution.

f. Replacement parts that are not genuine MTD parts.

g. Transportation charges and service calls.

No implied warranty, including any implied warranty of merchantability of fitness for a particular purpose, applies after the applicable period of express written warranty above as to the parts as identified. No other express warranty, whether written or oral, except as mentioned above, given by any person or entity, including a dealer or retailer, with respect to any product, shall bind MTD. During the period of the warranty, the exclusive remedy is repair or replacement of the product as set forth above. The provisions as set forth in this warranty provide the sole and exclusive remedy arising from the sale. MTD shall not be liable for incidental or consequential loss or damage including, without limitation, expenses incurred for substitute or replacement lawn care services or for rental expenses to temporarily replace a warranted product.

Some states do not allow the exclusion or limitation of incidental or consequential damages, or limitations on how long an implied warranty lasts, so the above exclusions or limitations may not apply to you. In no event shall recovery of any kind be greater than the amount of the purchase price of the product sold. Alteration of safety features of the product shall void this warranty. You assume the risk and liability for loss, damage, or injury to you and your property and/or to others and their property arising out of the misuse or inability to use the product. This limited warranty shall not extend to anyone other than the original purchaser or to the person for whom it was purchased as a gift. HOW STATE LAW RELATES TO THIS WARRANTY: This limited warranty gives you specific legal rights, and you may also have other rights which vary from state to state. IMPORTANT: Owner must present Original Proof of Purchase to obtain warranty coverage.

MTD LLC, P.O. BOX 361131 CLEVELAND, OHIO 44136-0019; Phone: 1-800-800-7310, 1-330-220-4683

GDOC-100015 REV. A

MTD 450, 460 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual