MTD 450 Series User manual

IMPORTANT: READ
MTD PRODUCTS LTD. P.O. BOX 1386 KITCHENER, ON N2G 4J1
REAR TINE
TILLER
MODEL
450 Series
PRINTED IN THE U.S.A.
SAFETY RULES AND
INSTRUCTIONS CAREFULLY
OPERATOR’S MANUAL
772C0731B
(1/09)

2
TABLE OF CONTENTS
FINDING MODEL NUMBER
This Operator’s Manual is an im portant part of your new equipment. 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. A sample model plate is also given below. You can locate the model
plate by standing at the operating position and looking do wn at the rear of the deck . This information will be
necessary to use the manufacturer’s web site and/or help from the Customer Support Department or an authorized
service dealer.
ENGINE INFORMATION
The engine manufacturer is responsible for all engine-related i ssues with regards to performanc e, power-rating, specications,
warranty and service. Please refer to the engine manufacturer’s Ow ner’s/Operator’s Manual packed separately with your unit for
more information.
CALLING CUSTOMER SUPPORT
Please do NOT return the unit to the retailer from which it was purchased, without first contacting Customer Support.
If you have diculty assembling this product or have any questions regarding the controls, operation or maintenance
of this unit, please call a Cu stomer Support Representataive.
For US Customers: 1- (330) 220-4MTD (4683) or 1- (800)-800-7310
For Canadian Customers: 1-800-668-1238
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.
HOW TO OBTAIN SERVICE
Service is available, WITH PROOF OF PURCHASE, through your local au thorized service dealer. To locate the
dealer in your area;
In the U.S.A.: Check your Yellow Pages, or co ntact customer support listed about MTD LLC at P.O. Box 361131,
Cleveland, Ohio 44136-0019, or call 1-800-800-7310 or 1-330-220-4683 or log on to our Web site at
www.mtdproducts.com.
In Canada: Contact MTD Products Limited, Ki tchener, ON N2G 4J1, or call 1-800-668-1238 or log on to our Web
site at www.mtdcanada.com.
Content Page
Customer Support 2
Important Safe Operation Practices 3
5
6ylbmessA
Controls 8
Operation 9
How To Use Your Tiller
11stnemtsujdA
Lubrication 11
Maintenance 11
O-Season Storage 12
Trouble Shooting Guide 13
14
Warranty
egaPtnetnoC
MTD PRODUCTS LIMITED
KITCHENER, ON N2G 4J1
1-800-668-1238
XXXXXXXXXX XXXXXXXXXXX
Model Number
Numéro de modèle
Serial Number
Numéro de série
www.mtdcanada.com
This is where your model number will be.
This is where your serial number will be.
Copy the model number here:
Copy the serial number here:
Safety Symbols
10

3
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 safe operation practices 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 fingers, hands, toes and feet. Failure to observe
the following safety instructions could result in serious injury or death.
SECTION 1: IMPORTANT SAFE OPERATION PRACTICES
Training
1. 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.
2. Be familiar with all controls and their proper operation. Know
how to stop the machine and disengage them quickly.
3. 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.
4. Never allow adults to operate this machine without proper
instruction.
5. Keep the area of operation clear of all persons, particularly
small children and pets. Stop machine if anyone enters the
area.
Preparation
1. 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.
2 Wear sturdy, rough-soled work shoes and close fitting slacks
and shirt. Loose fitting clothes or jewelry can be caught in mov-
able parts. Never operate this machine in bare feet or sandals.
3. Disengage clutch levers and shift (if provided) into neutral (“N”)
before starting the engine.
4. Never leave this machine unattended with the engine running.
5. Never attempt to make any adjustments while engine is running,
except where specifically recommended in the operator’s
manual.
Safe Handling Of Gasoline:
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.
a. Use only an approved gasoline container.
b. Never fill containers inside a vehicle or on a truck or trailer bed
with a plastic liner. Always place containers on the ground away
from your vehicle before filling.
c. When practical, Remove gas-powered equipment from the truck
or trailer and refuel it on the ground. If this is not possible, then
refuel such equipment on a trailer with a portable container,
rather than from a gasoline dispenser nozzle.
d. Keep the nozzle in contact with the rim of the fuel tank or
container opening at all times until fueling is complete. Do not
use a nozzle lock-open device.
e Extinguish all cigarettes, cigars, pipes and other sources of
ignition.
f. Never fuel machine indoors because flammable vapors will
accumulate in the area.
g. Never remove gas cap or add fuel while the engine is hot or
running. Allow engine to cool at least two minutes before refuel-
ing.
h. Never over fill fuel tank. Fill tank to no more than ½ inch below
bottom of filler neck to provide for fuel expansion.
i. Replace gasoline cap and tighten securely.
j. If gasoline is spilled, wipe it off the engine and equipment. Move
unit to another area. Wait 5 minutes before starting the engine.
k. To reduce fire hazard, keep mower free of grass, leaves, or
other debris build-up. Clean up oil or fuel spillage and remove
any fuel soaked debris.
l. Never store the machine or fuel container near an open flame,
spark or pilot light as on a water heater, space heater, furnace,
clothes dryer or other gas appliances.
Operation
1. Do not put hands or feet near rotating parts. Contact with the
rotating parts can amputate hands and feet.
2. Do not operate machine while under the influence of alcohol or
drugs.
3. Never operate this machine without good visibility or light.
Always be sure of your footing and keep a firm hold on the
handles.

4
4. 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.
5. 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.
6. Exercise extreme caution when operating on or crossing gravel
surfaces. Stay alert for hidden hazards or traffic. Do not carry
passengers.
7. Never operate the machine at high transport speeds on hard or
slippery surfaces.
8. Exercise caution to avoid slipping or falling.
9. Look down and behind and use care when in reverse or pulling
machine towards you.
10.Start the engine according to the instructions found in this
manual and keep feet well away from the tines at all times.
11. 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.
12.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.
13.Never run an engine indoors or in a poorly ventilated area.
Engine exhaust contains carbon monoxide, an odorless and
deadly gas.
14.Muffler and engine become hot and can cause a burn. Do not
touch.
15.Use caution when tilling near fences, buildings and under-
ground utilities. Rotating tines can cause property damage or
personal injury.
16.Do not overload machine capacity by attempting to till soil to
deep at to fast of a rate.
17. 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.
18.Keep all shields, guards and safety devices in place and operat-
ing properly.
19.Never pick up or carry machine while the engine is running.
20.Use only attachments and accessories approved by 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 Customer Support or your
authorized dealer.
Maintenance & Storage
1. Keep machine, attachments and accessories in safe working
order.
2. Allow a machine to cool at least five minutes before storing.
Never tamper with safety devices. Check their proper operation
regularly.
3. 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.
4. 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.
5. Do not change the engine governor settings or over-speed the
engine. The governor controls the maximum safe operating
speed of the engine.
6. Maintain or replace safety and instruction labels, as necessary.
7. Follow this manual for safe loading, unloading, transporting, and
storage of this machine.
7. 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.
8. Always refer to the operator’s manual for important details if the
machine is to be sotred for an extended period.
9. If the fuel tank has to be drained, do this outdoors.
10.Observe proper disposal laws and regulations for gas, oil, etc.
to protect the environment.
11. According to the Consumer Products Safety Commission
(CPSC) and the U.S. Environmental Protection Agency (EPA),
this product has an Average Useful Life of seven (7) years, or
60 hours of operation. At the end of the Average Useful Life, buy
a new machine or have the machine inspected annually by an
authorized service dealer to ensure that all mechanical and
safety systems are working properly and not worn excessively.
Failure to do so can result in accidents, injuries or death.
Do not modify engine
To avoid serious injury or death, do not modify engine in any way.
Tampering with the governor setting can lead to a runaway engine
and cause it to operate at unsafe speeds. Never tamper with
factory setting of engine governor.
Notice regarding Emissions
Engines which are certified to comply with California and federal
EPA emission regulations for SORE (Small Off Road Equipment)
are certified to operate on regular unleaded gasoline, and may
include the following emission control systems: Engine Modification
(EM) and Three Way Catalyst (TWC) if so equipped.

5
Spark Arrester
WARNING: This machine is equipped with an
internal combustion engine and should not be
used on or near any unimproved forest-covered,
brushcovered or grass-covered land unless the
engine’s exhaust system is equipped with a spark
arrester meeting applicable local or provincial
laws (if any).
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.
SAVE THESE INSTRUCTIONS!
This page depicts and describes safety symbols that may appear on this product. Read, understand, and follow all
instructions on the machine before attempting to assemble and operate.
Symbol Description
READ THE OPERATOR’S MANUAL(S)
Read, understand, and follow all instructions in the manual(s) before
attempting to assemble and operate
WARNING— ROTATING TINES
Do not put hands or feet near rotating parts. Contact with the rotating parts
can amputate hands and feet.
WARNING— ROTATING TINES
Do not put hands or feet near rotating parts. Contact with the rotating parts
can amputate hands and feet.
WARNING—GASOLINE IS FLAMMABLE
Allow the engine to cool at least two minutes before refueling.
WARNING— CARBON MONOXIDE
Never run an engine indoors or in a poorly ventilated area. Engine exhaust
contains carbon monoxide, an odorless and deadly gas.
WARNING— HOT SURFACE
Engine parts, especially the muffler, become extremely hot during opera-
tion. Allow engine and muffler to cool before touching.
SECTION 2: SAFETY SYMBOLS
If a spark arrester is used, it should be maintained in effective
working order by the operator.
A spark arrester for the muffler is available through your nearest
engine authorized service dealer.

6
SECTION 3: ASSEMBLY INSTRUCTIONS
IMPORTANT: This unit is shipped WITHOUT
GASOLINE or OIL. After assembly, see separate
engine manual for proper fuel and engine oil
recommendations.
NOTE: Left and right is determined from the
operator’s position, standing behind the tiller.
TOOLS REQUIRED FOR ASSEMBLY
Adjustable Wrenches
Pair of Pliers
Screw Driver
TO REMOVE UNIT FROM CARTON
1. Remove staples, break glue on top flaps, or cut
tape at carton end and peel along top flap to open
carton.
2. Remove loose parts included with unit (i.e.,
operator’s manual, etc.).
3. Cut corners and lay carton down flat.
4. Remove packing material.
5. Roll or slide unit out of carton. Check carton
thoroughly for loose parts.
6. Extend control cable and lay on the floor. Be
careful not to bend or kink control cable.
Figure 1
WARNING: Disconnect the spark plug
wire and ground against the engine to
prevent unintended starting.
ATTACHING DEPTH STAKE ASSEMBLY
1. Tip the tiller forward so it rests on front
counterweight.
2. Raise the tine shield hinge flap assembly. Remove
"T" knob, flat washer and hex bolt from depth
stake. Insert the depth stake assembly in front of
spacer (under the tine shield) and up through the
tine shield assembly as shown in Figure 1.
3. Insert clevis pin through the tine shield and the
second hole from top of the depth stake. Secure
with hairpin clip.
4. Insert hex bolt into the top hole of the depth stake
assembly. Place flat washer on hex bolt and
thread “T” knob onto the hex bolt. See Figure 1.
Tighten securely.
5. Tip the tiller back down so it rests on the depth
stake (transport position).
ATTACHING THE HANDLE ASSEMBLY
Figure 2
1. Remove top two bolts and flange lock nuts from
handle mounting brackets as shown in Figure 2.
Do not remove the bottom bolt and nut.
2. Place handle assembly in position between the
handle mounting brackets. See Figure 2.
3. Line up holes in handle with holes in handle
mounting brackets. Secure with hardware
removed in step 1.
T-Knob
Flat Washer
Hex Bolt
Hairpin Clip
Clevis Pin
Depth Stake
Rear Tine
Shield
Remove Handle
Assembly
Handle
Bracket

7
Figure 3
ATTACHING THE CLUTCH CABLE
Attach the clutch cable to the handle as follows (be
careful not to kink the cable).
1. Remove threaded eyebolt and nut from the end of
the cable.
2. Route the clutch cable to the right side of the
handle mounting brackets and underneath the
handle.
3. Push the cable through the hole in the center of
the handle and snap in the plastic tting. See
Figure 3.
4. Remove slot head screw, nut and two at washers
from the clutch bail.
5. Fasten the threaded eyebolt onto bail as shown in
Figure 4. The parts go together from top to bottom
as follows: Slot Head Screw, Flat Washer, Clip,
Eyebolt, Flat Washer and 1/4” Nut.
6. Thread eyebolt and #10 nut, removed in step 1,
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 4.
NOTE: Do not overtighten control wire. Too much
tension may cause it to break.
WARNING: Be certain to check the
clutch cable adjustment before operating
the tiller.
Figure 4
ATTACHING THE CONTROL ROD
•Make sure the handle assembly is in the highest
position.
•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 th at was removed in step 1.
See Figure 5.
•Insert the longer end of the control rod through the
hole in the gear selector handle and secure with
hairpin clip.See Figure 6.
Figure 5
CHECKING THE CLUTCH ADJUSTMENT
IMPORTANT: Service the engine with oil and
gasolinebefore checking this adjustment. Refer to the
separate engine manual pa cked 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 wa ll. 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.
Plastic Fitting
Internally Threaded
Tube
SlotHead Screw,
Nut, Flat Washers
Slot Head Screw
Flat Washers
Threaded
Eyebolt
Internally
Threaded
Tube
Clutch
Bail
3/4”
1/4”
Nut
#10
Nut
Control Rod
Rubber
Washer
Indicator Bracket
Hairpin Clip
Idler Pulley Rod

8
WARNING: Do not put 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 (Wheels
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.
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.
SECTION 4: CONTROLS
THROTTLE CONTROL
The throttle control lever is located on the engine. It
controls the engine speed and stops the engine. See
Engine manual for further information.
CHOKE LEVER (if equipped)
The choke lever is located to the left of the throttle. It is
used to enrich the fuel mixture in the carburetor when
starting a cold engine. See Engine manual for further
information.
Figure 6
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 modes (see
below). Pull or push the handle so that the indicator on
top of shift cover points to the operating mode desired.
See Figure 6.
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, move the tiller forward or backward
slightly to allow the gears to synchronize.
• 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.
Height
Adjustment
Lever
Control
Rod
Gear
Selection
Handle
Clutch
Control
Bail
Clutch
Cable
Cable Tie

9
DEPTH STAKE
The depth bar controls the tilling depth. Refer to
SECTION 6: HOW TO USE YOUR TILLER on page
10.
ENGINE CONTROLS
See the separate engine manual for additional
information and functions of the engine controls.
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.
HANDLE ADJUSTMENT
The handle may be adjusted to be raised or lowered in
line with the tiller. To adjust the handle position loosen
the handle height adjustment crank a few turns. Pivot
handle up or down to desired position. Tighten crank.
See Figure 6.
CLUTCH CONTROL BAIL
The clutch control bail is located below the handle.
See Figure 6. Lifting the clutch control bail against the
handle engages the wheel and tine drive mechanisms.
NOTE: Never engage clutch lever while shifting.
SECTION 5: OPERATION
NOTE: Engine is shipped WITHOUT oil.
WARNING: Read, understand, and
follow all instructions and warnings on
the machine and in this manual before
operating.
BEFORE STARTING
Service 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.
TO START 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.
1. Place gear selection lever in NEUTRAL.
2. Place the throttle control lever in the FAST (rabbit)
position. Place the engine speed control in the
START position.
3. 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.
4. Stand at side of tiller. Grasp the starter handle and
pull out slowly, until it pulls slightly harder. Let rope
rewind slowly.
5. 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.
6. Repeat steps 3 and 4 until engine starts.
7. 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.
NOTE: Refer to engine manual for additional engine
information.
NOTE: After starting engine and prior to using the
tiller, be certain to check the clutch adjustment as
described in “Checking the Clutch Adjustment” section
of Assembly Instructions.
TO STOP ENGINE
1. Move throttle control to the STOP position.
2. 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 “Checking the Clutch
Adjustment” section of the Assembly Instructions.

10
SECTION 6: HOW TO USE YOUR TILLER
WARNING: Be certain the spark plug
wire is disconnected and grounded
against the engine when performing any
adjustments.
Tilling depth is controlled by the depth stake which can
be adjusted to five different settings. See Figure 7.
Adjust the side shields as shown in Figure 7, as you
adjust the depth stake. Be certain spark plug wire is
disconnected and grounded against the engine.
1. When using the tiller for the first time, use the
second adjustment hole from the top (1" of tilling
depth). See Figure 7.
2. When breaking up sod and for shallow cultivation,
use 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 make one or two
more passes over the area.
3. When tilling loose soil, 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.
4. To transport tiller, lower the depth stake (use top
adjustment hole).
To adjust the depth stake, remove the clevis pin and
hairpin clip. See Figure 7. Move the depth stake to the
desired setting and secure with the clevis pin and
hairpin clip.
To adjust the side shields, remove the wing nuts. See
Figure 7. Place side shield in position desired. Replace
wing nuts and tighten securely.
TO OPERATE THE TILLER:
1. Select the depth stake setting.
2. Start engine as instructed on page 9.
3. 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.
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.
4. Squeeze the clutch control bail 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.
Figure 7
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 reverse 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 widthwise) to pulverize the soil.
Use This
Position
First Time
Transport Position
1”
3”
5”
7”
Clevis Pin
Use This Hole For
Lowest (shallowest)
Position
Use This Hole For
Highest (Deepest)
Position
Side Shields

11
SECTION 7: 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. Refer to the
Control section for details of handle adjustment.
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 clutch
adjustment information in “Checking the Clutch
Adjustment” section of the 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.
1. Disconnect and ground out spark plug wire against
the engine.
2. Remove the belt cover as described in the belt
replacement section on page 12.
3. Remove the hairpin clip and flat washer from the
idler pulley rod. See Figure 9.
4. Move the idler pulley rod to the lower hole in the
idler bracket. See Figure 9.
5. Replace the wave washer and hairpin clip.
6. Check clearance of the idler pulley rod to the
indicator bracket by shifting to each forward mode,
as before.
CARBURETOR ADJUSTMENT
WARNING: If any adjustments are made
to the engine while the engine is running,
(e.g. carburetor), disengage all clutches
and tines. Keep clear of all moving parts.
Be careful of heated surfaces and muffler.
Never make unnecessary adjustments. The factory
settings are correct for most applications. If
adjustments are needed, refer to the separate engine
manual packed with your tiller.
SECTION 8: 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 30 ounces of Benalene 920 grease. Apply a
bead of RTV or silicone sealant to the right half of the
transmission, all the way around the gear
compartment. Assemble the left half to it. This grease
can be obtained at your nearest authorized dealer.
Order part number 737-0300.
Clutch Bail—Lubricate the pivot point on the clutch
bail 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 Shaft—Remove tines at least once a season and
lubricate with oil.
Wheel Axle—Remove the wheel assemblies at least
once a season and lubricate with oil.
SECTION 9: MAINTENANCE
WARNING: Disconnect the spark plug
wire and ground it against the engine
before performing any repairs or
maintenance.
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.

12
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 THE TINE AREA
Clean the underside of the tine shield after each use.
The dirt washes off the tines easier if washed 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.
If belt replacement is required, order belt or belts by
part number from your nearest authorized dealer.
Part No. 754-0434—‘‘V’’ Belt
1. Disconnect and ground the spark plug wire against
the engine.
2. Remove the belt cover from the left side of the
tiller as follows: See Figure 8. Remove two torx
screws from the top of belt cover.
3. Remove the hex cap nut and flat washer from the
side of the belt cover. Remove the hex screw at the
bottom of the front of the cover.
4. Remove the belt keeper bracket located behind
the engine pulley by removing two hex bolts and
lock washers. See Figure 9.
5. Remove belt. Reassemble new belt, following
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.
Figure 8
Figure 9
TIRES
Recommended operating tire pressure is
approximately 20 p.s.i. (check sidewall of tire for tire
manufacturer’s recommended pressure). Maximum
tire pressure under any circumstances is 30 p.s.i.
Equal tire pressure should be maintained on both tires.
When installing a tire to the rim, be certain rim is clean
and free of rust. Lubricate both the tire and rim
generously. Never inflate to over 30 p.s.i. to seat
beads.
WARNING: Excessive pressure (over 30
p.s.i.) when seating beads may cause tire/
rim assembly to burst with force sufficient
to cause serious injury.
SECTION 10: 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.
1. Clean the exterior of engine and the entire tiller
thoroughly. Lubricate the tiller as described in the
lubrication instructions.
2. 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 reduced
serviceability.
Torx Screws Belt Cover
Hex Cap Nut
Self Tap
Screw
Engine
Pulley Belt Keeper Idler
Brkt.
Idler
Pulley
Rod
Brkt.

13
3. Refer to the engine manual for correct engine
storage instructions.
4. Wipe tines with oiled rag to prevent rust.
5. 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, especially
any springs, bearings and cables.
SECTION 11: TROUBLE SHOOTING GUIDE
NOTE: For repairs beyond the minor adjustments above, contact your local authorized service dealer.
Trouble Possible Cause(s) Corrective Action
Engine fails to
start
Fuel tank empty, or stale fuel.
Throttle control lever not in correct
starting position (if so equipped).
Blocked fuel line.
Dirty aircleaner.
Choke not in ON position.
Spark plug wire disconnected.
Faulty spark plug.
Engine flooded.
Fill tank with clean, fresh gasoline. Fuel will not last over
thirty days unless a fuel stabilizer is used.
Move throttle lever to start position.
Clean fuel line.
Refer to the engine manual packed with your unit.
Move switch to ON position.
Connect wire to spark plug.
Clean, adjust gap or replace.
Refer to the engine manual packed with your unit.
Engine runs
erratic
Unit running on CHOKE.
Spark plug wire loose.
Blocked fuel line or stale fuel.
Vent in gas cap plugged.
Water or dirt in fuel system.
Dirty air cleaner.
Carburetor out of adjustment.
Move choke lever to OFF position.
Connect and tighten spark plug wire.
Clean fuel line; fill tank with clean, fresh gasoline. Fuel will
not last over thirty days unless a fuel stabilizer is used.
Clear vent.
Drain fuel tank. Refill with fresh fuel.
Refer to the engine manual packed with your unit.
Refer to the engine manual packed with your unit.
Engine over-
heats
Engine oil level low.
Dirty air cleaner.
Air flow restricted.
Carburetor not adjusted properly.
Fill crankcase with proper oil.
Refer to the engine manual packed with your unit.
Refer to the engine manual packed with your unit.
Adjust carburetor as instructed in separate engine manual.
Tines do not
engage
Foreign object lodged in tines.
Tine clevis pin(s) missing.
Pulley and idler not in correct
adjustment.
Not shifting properly.
Control cable not adjusted properly.
Belt worn and/or stretched.
Dislodge foreign object.
Replace tine clevis pin(s).
Take unit to authorized service dealer.
Refer to Controls section of operator’s manual for proper
shifting procedures.
Adjust control cable (see assembly instructions).
Replace belt.
Tines skip over
ground
Improper rotation. Forward rotation should only be used on soil that has
already been tilled, not on virgin soil.
Wheels do not
engage
Clevis pin missing.
Tiller is not being shifted properly.
Control cable not adjusted properly.
Belt worn and/or stretched.
Replace clevis pin.
Refer to Controls section of operator’s manual for proper
shifting procedures.
Adjust control cable (see assembly instructions).
Replace belt.

14
TWO YEAR LIMITED WARRANTY
The limited warranty set forth below is given by MTD Products Limited with respect to new merchandise purchased and used in
Canada and/or its territories and possessions (either entity respectively, “MTD”).
MTD warrants this product (excluding its normal wear parts as described below) 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, friction wheels, shave plates, auger spiral rubber, tires engine oil, air filters and spark
plugs.
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 contact MTD Products Limited, Kitchener, ON N2G 4J1, or call 1-800-668-1238 or log on to
our Web site at www.mtdcanada.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. The Powermore engine is not excluded under this agreement.
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 Canada, including possessions and territories.
f. Replacement parts that are not genuine MTD parts.
g. Transportation charges and service calls.
h. If Products are used commercially. (MTD may separately offer Limited Commercial Warranties on certain select products. Ask
your dealer or retailer for details or contact MTD Service for more information.)
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 jurisdictions 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 LOCAL LAWS RELATE TO THIS WARRANTY: This limited warranty gives you specific legal rights, and you may also have
other rights that vary in different jurisdictions.
IMPORTANT: Owner must present Original Proof of Purchase to obtain warranty coverage.
MTD Products Ltd., P. O. BOX 1386, KITCHENER, ON N2G 4J1; Phone: 1-800-668-1238 12.16.06

15
notes . . .

16
notes . . .

16
notes . . .

15
GARANTIE LIMITÉE DE DEUX ANS
La garantie limitée qui est énoncée ci-dessous est offerte par MTD Products Limited, pour toutes les marchandises achetées et
utilisées au Canada et/ou ses territoires (l’une ou l’autre entité respectivement appelée « MTD »).
« MTD » garantit que ce produit (à l’exception des pièces à usure normale énumérées ci-dessous)est exempt de tout vice de
matière et de fabrication pour une durée de deux (2) ans à compter de la date de l’achat initial et s’engage à réparer ou à remplacer,
gratuitement et à son choix, toute pièce qui s’avère défectueuse en raison d’un vice de matière ou de fabrication. Cette garantie
limitée n’est applicable que si ce produit a été utilisé et entretenu conformément aux instructions de la notice d’utilisation qui
l’accompagne. De plus, le produit ne doit pas avoir fait l’objet d’un emploi incorrect ou abusif, d’une utilisation à des fins com-
merciales, d’une négligence, d’un accident, d’un entretien incorrect, d’une modification, d’un acte de vandalisme, d’un vol, d’un
incendie, d’une inondation ou de tout autre dégât causé par tout incident ou désastre naturel. Les dégâts causés par l’installation
ou l’utilisation d’une pièce, d’un accessoire ou d’un équipement annexe, dont l’emploi avec le produit faisant l’objet de la notice
d’utilisation n’est pas homologué par MTD, rendront la garantie nulle et non avenue.
Les pièces ou composants à usure normale sont garantis exempts de tout vice de matière et de fabrication pour une période de 30
jours à compter de la date d’achat. Les pièces et composants à usure normale comprennent, sans s’y limiter, les batteries, cour-
roies, lames, adaptateurs de lame, sacs à herbe, roues du plateau de coupe des tondeuses à siège, sièges, patins de souffleuses,
roues de frottement, lames de raclage, le caoutchouc de la tarière et pneus.
POUR FAIRE HONORER LA GARANTIE : Présentez UNE PREUVE D’ACHAT à la station technique agréée de votre localité. Pour
localiser une station technique agréée ou un concessionnaire dans votre région, adressez-vous à MTD Products Limited, Kitchener,
Ontario, N2G 4J1 ou appelez le 1-800-668-1238 ou visitez notre site web au www.mtdcanada.com
Cette garantie limitée ne couvre pas:
a. Le moteur ou ses composants. Ces articles peuvent être couverts par une garantie séparée du fabricant. Consultez la garantie
du fabricant quant aux conditions.
b. Les pompes, soupapes et pistons des fendeuses à bois sont couverts par une garantie séparée d’un an.
c. Les articles d’entretien courant tels que les lubrifiants, filtres, aiguisages de lame et révisions, les réglages de frein, de
l’embrayage ou du plateau de coupe et la détérioration normale de la finition du fait de l’utilisation de la machine ou de son
exposition aux intempéries.
d. L’entretien ou les réparations effectués par quiconque autre qu’une station technique agréée.
e. MTD ne garantit pas les produits vendus ou exportés du Canada, de ses possessions et territoires.
f. Les pièces de rechange si elles ne sont pas des pièces MTD authentiques.
g. Les frais de transport des machines et de déplacement des techniciens.
h. Les produits utilisés dans un but commercial. (Certains produits peuvent être accompagnés d’une garantie limitée MTD séparée
pour usage commercial. Renseignez-vous auprès du concessionnaire ou détaillant pour plus de détails ou adressez-vous
directement au service après-vente de MTD.)
Aucune garantie tacite, y compris toute garantie tacite de qualité marchande ou d’adaptabilité dans un but particulier,
ne s’applique aux pièces identifiées ci-dessus après la période de vigueur de la garantie écrite expresse. Aucune autre
garantie expresse, qu’elle soit verbale ou écrite, à l’exception des stipulations ci-dessus, offerte par toute personne ou
entité (y compris un concessionnaire/revendeur), pour tout produit, n’engage MTD. Pendant la période de garantie, la
réparation ou le remplacement du produit ci-dessus constitue le recours exclusif à la disposition du client.
Les stipulations énoncées dans cette garantie offrent le seul recours à la suite de la vente. MTD ne peut être tenue respon-
sable pour toute perte ou tout dommage accessoire ou immatériel comprenant, sans s’y limiter, les frais de remplacement
ou de substitution des services d’entretien des pelouses ou les frais de location pour remplacer temporairement un article
sous garantie.
Certaines juridictions ne permettent pas l’inclusion ou la restriction des dommages accessoires ou immatériels ou une limite à la
durée de la garantie tacite. Par conséquent, les exclusions ci-dessus peuvent ne pas s’appliquer dans votre situation.
Le remboursement ou remplacement quel qu’il soit ne sera en aucun cas supérieur au montant du prix d’achat du produit vendu.
Toute modification des caractéristiques de sécurité rendra la garantie nulle et non avenue. L’utilisateur assume tout risque
et toute responsabilité en cas de perte, de dommage matériel ou de blessure résultant de l’utilisation incorrecte du produit ou de
l’incapacité de l’employer.
Cette garantie limitée n’est offerte qu’à l’acheteur initial ou à la personne à laquelle le produit a été offert en cadeau.
LES LOIS LOCALES ET CETTE GARANTIE : Cette garantie limitée vous accorde des droits juridiques spécifiques et vous pouvez
bénéficier d’autres droits qui varient selon les juridictions.
IMPORTANT : Le propriétaire doit présenter le reçu original pour faire honorer la garantie.
MTD Products Ltd., C.P. 1386, Kitchener, Ontario N2G 4J1; téléphone: 1-800-668-1238
10.30.06

14
CHAPITRE 13: GUIDE DE DÉPANNAGE
REMARQUE: Pour toute réparation autre que les ajustements mineurs ci-dessus, adressez-vous à la statio
n
technique agréée.
Problème Cause(s) Possible(s) Solution
Le moteur ne
démarre pas. Filtre à air sale.
La commande des gaz ne se trouve pas en
position de démarrage.
Volet de départ fermé.
Fil de la bougie débranché.
Le réservoir est vide ou l’essence est
éventée.
Bougie défectueuse.
Moteur noyé.
Canalisation de carburant bouchée.
Consultez la notice d’utilisation du moteur.
Placez la commande des gaz à la position de
démarrage.
Ouvrez le volet de départ.
Branchez le fil à la bougie.
Faites le plein avec une essence propre et fraîche.
L’essence doit être utilisée dans les 30 jours à moins
d’utiliser un stabilisateur de carburant.
Nettoyez, réglez l’écartement ou remplacez la
bougie.
Consultez la notice d’utilisation du moteur.
Nettoyez la canalisation.
Le moteur tourne
irrégulièrement. Volet de départ fermé.
Fil de la bougie desserré.
Conduite d’essence bouchée ou
essence éventée.
Eau ou saleté dans le système de carburant.
Carburateur mal réglé.
Filtre à air sale.
Vent in gas cap plugged.
Ouvrez le volet de départ.
Branchez et serrez le fil de la bougie.
Nettoyez la conduite d’essence. Faites le plein avec
une essence propre et fraîche.
Débranchez la conduite d’essence au carburateur et
videz le réservoir. Faites le plein avec une essence
propre et fraîche.
Consultez la notice d’utilisation du moteur.
Consultez la notice d’utilisation du moteur.
L’évent du capuchon du réservoir est bouchée.
Le moteur sur-
chauffe. Carburateur mal réglé.
Filtre à air sale.
Niveau d’huile trop bas.
La circulation d’air est gênée.
Consultez la notice d’utilisation du moteur.
Consultez la notice d’utilisation du moteur.
Faites le plein d’huile du carter.
Consultez la notice d’utilisation du moteur
Les dents ne
s’enclenchent pas. Objet dans les dents.
L’axe de chape des dents est manquant.
La poulie et la poulie de tension ne sont pas
correctement réglées.
Les vitesses du motoculteur ne sont pas
changées correctement.
Mauvais réglage du câble de commande.
Courroie usée ou étirée.
Dégagez l’objet.
Remplacez l’axe de chape des dents.
Faites réparer la machine par une station technique
agréée
Voir les instructions de changement de vitesses dans
le chapitre sur les commandes de la notice
d’utilisation.
Réglez le câble de commande (voir les instructions.)
Remplacez la courroie.
Les dents saut au-
dessus la terre. Rotation inexacte. La rotation des dents vers l'avant devrait seulement
être employée sur le sol meuble, non sur le sol non
travaillée.
Les roues ne
s’enclenchent pas. L’axe de chape est manquant.
Les vitesses du motoculteur ne sont pas
changées correctement.
Mauvais réglage du câble de commande.
Courroie usée ou étirée.
Remplacez l’axe de chape.
Voir les instructions de changement de vitesses dans
le chapitre sur les commandes de la notice
d’utilisation.
Réglez le câble de commande (voir les instructions).
Remplacez la courroie.

13
REMARQUE: Lors du remontage, vérifiez que la
courroie passe au-dessus de la poulie du tendeur et
entre les dispositifs de retenue près de la poulie du
tendeur. Voir la Figure 10 .
PRESSION DES PNEUS
La pression recommandée est de 20 lb/po2. Vérifiez la
pression maximale, recommandée par le fabricant du
pneu, inscrite sur le flanc de celui-ci. Si ce
renseignement ne figure pas sur vos pneus,
souvenez-vous que la pressions maximale doit
toujours être inférieure à 30 lb/po2. Conservez une
pression égale sur les deux pneus.
Assurez-vous toujours que la jante est propre et sans
rouille avant d’y installer un pneu. Lubrifiez bien le
pneu et la jante. Ne gonflez jamais le pneu à plus de
30 lb/po2pour installer les talons.
AVERTISSEMENT: Ne gonflez jamais
à plus de 30 lb/po2pour installer les
talons. Une pression excessive peut en
effet faire éclater l’ensemble pneu et jante
et provoquer des blessures graves.
CHAPITRE 12: REMISAGE HORS SAISON
Si vous ne prévoyez pas d’utiliser le motoculteur
pendant une période de plus de 30 jours, procédez de
la façon suivante.
1. Nettoyez l’extérieur du moteur et tout le
motoculteur. Lubrifiez le motoculteur selon les
instructions.
2. L’utilisation d’un nettoyeur sous pression ou d’un
boyau d’arrosage pour nettoyer le tracteur est
déconseillée. Cela risque en effet d’endommager
les composants électriques, les fusées, les
poulies, les roulements ou le moteur. L’emploi
d’eau a tendance à raccourcir la vie du
motoculteur et à limiter sa facilité d’entretien.
3. Consultez la notice d’utilisation du moteur quant
aux instructions de remisage.
4. Essuyez les dents avec un chiffon imbibé d’huile
pour les empêcher de rouiller.
5. Remisez le motoculteur dans un endroit propre et
sec. Ne le remisez pas près de produits corrosifs
comme des engrais par exemple.
REMARQUE: Il est très important de bien protéger
le matériel contre la rouille s’il doit être entreposé dans
un abri métallique non ventilé. Enduisez toute la
machine, en particulier les câbles et toutes les pièces
mobiles, avec une huile légère ou de la silicone.
Other manuals for 450 Series
10
Table of contents
Other MTD Tiller manuals