Columbia 390 Series User manual

Printed In USA
Safe Operation Practices • Set-Up • Operation • Maintenance • Service • Troubleshooting • Warranty
WARNING
READ AND FOLLOW ALL SAFETY RULES AND INSTRUCTIONS IN THIS MANUAL
BEFORE ATTEMPTING TO OPERATE THIS MACHINE.
FAILURE TO COMPLY WITH THESE INSTRUCTIONS MAY RESULT IN PERSONAL INJURY.
OPERATOR’S MANUAL
LES DISTRIBUTIONS RVI LIMITÉE, 2955, JEAN-BAPTISTE DESCHAMPS, LACHINE, QUEBEC H8T 1C5
MTD LLC, P.O. BOX 361131 CLEVELAND, OHIO 44136-0019
769-06899
1.22.11
Front Tine Tiller — 390 Series

Customer Support
If you have difficulty assembling this product or have any questions regarding the controls, operation, or maintenance of
this machine, call an authorized dealer, see below.
Please have your unit’s model number and serial number ready when you call. See previous section to locate this
information.
In the U.S.A.:
MTD LLC at P.O. Box 361131, Cleveland, Ohio 44136-0019. Phone: [phone].
In Canada:
MTD Canada, 97 Kent Avenue, Kitchener, ON N2G 4J1 Phone: [phone] or
LES DISTRIBUTIONS RVI LIMITÉE, 2955, Jean-Baptiste Deschamps, Lachine, Quebec H8T 1C5 Phone: [phone].
To The Owner 1
2
Safe Operation Practices ........................................ 3
Assembly & Set-Up .................................................. 6
Controls & Features................................................. 9
Operation................................................................10
Maintenance & Adjustment..................................12
Service .....................................................................14
Troubleshooting.....................................................16
Replacement Parts.................................................17
Warranty ................................................................ 22
Table of Contents
Record Product Information
Before setting up and operating your new equipment, please
locate the model plate on the equipment and record the
information in the provided area to the right. You can locate the
model plate by standing at the operating position and looking
down at the rear of the machine. This information will be
necessary, should you seek technical support via our web site or
with your local dealer.
Mo d e l Nu M b e r
Se r i a l Nu M b e r
Thank you for purchasing your new equipment. It was carefully
engineered to provide excellent performance when properly
operated and maintained.
Please read this entire manual prior to operating the equipment.
It instructs you how to safely and easily set up, operate and
maintain your machine. Please be sure that you, and any other
persons who will operate the machine, carefully follow the
recommended safety practices at all times. Failure to do so could
result in personal injury or property damage.
All information in this manual is relative to the most recent
product information available at the time of printing. Review
this manual frequently to familiarize yourself with the machine,
its features and operation. Please be aware that this Operator’s
Manual may cover a range of product specifications for
various models. Characteristics and features discussed and/or
illustrated in this manual may not be applicable to all models.
The manufacturer reserves the right to change product
specifications, designs and equipment without notice and
without incurring obligation.
If you have any problems or questions concerning the machine,
phone your local service dealer or contact us directly. Customer
Support telephone numbers, website address and mailing
address can be found on this page. We want to ensure your
complete satisfaction at all times.
Throughout this manual, all references to right and left side of the
machine are observed from the operating position.
The engine manufacturer is responsible for all engine-related
issues with regards to performance, power-rating, specifications,
warranty and service. Please refer to the engine manufacturer’s
Owner’s/Operator’s Manual, packed separately with your
machine, for more information.
Thank You

Important Safe Operation Practices 2
3
Training
Read, understand, and follow all instructions on the1.
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.2.
Know how to stop the machine and disengage them
quickly.
Never allow children under 14 years of age to operate this3.
machine. Children 14 and over should read and understand
the instructions and safe operation practices in this manual
and on the machine and be trained and supervised by an
adult.
Never allow adults to operate this machine without proper4.
instruction.
Keep the area of operation clear of all persons, particularly5.
small children and pets. Stop machine if anyone enters the
area.
Preparation
Thoroughly inspect the area where the equipment is to1.
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 fitting2.
slacks and shirt. Loose fitting clothes or jewelry can be
caught in moving parts. Never operate this machine in bare
feet or sandals.
Disengage clutch levers and shift (if provided) into neutral3.
(“N”) before starting the engine.
Never leave this machine unattended with the engine4.
running.
Never attempt to make any adjustments while engine is5.
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.
Use only an approved gasoline container.a.
Never fill containers inside a vehicle or on a truckb.
or trailer bed with a plastic liner. Always place
containers on the ground away from your vehicle
before filling.
When practical, remove gas-powered equipmentc.
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.
Keep the nozzle in contact with the rim of the fueld.
tank or container opening at all times until fueling is
complete. Do not use a nozzle lock-open device.
Extinguish all cigarettes, cigars, pipes and othere.
sources of ignition.
Never fuel machine indoors.f.
Never remove gas cap or add fuel while the engineg.
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 ½h.
inch below bottom of filler neck to allow space for
fuel expansion.
Replace gasoline cap and tighten securely.i.
If gasoline is spilled, wipe it off the engine andj.
equipment. Move unit to another area. Wait 5
minutes before starting the engine.
To reduce fire hazards, keep machine free of grass,k.
leaves, or other debris build-up. Clean up oil or fuel
spillage and remove any fuel soaked debris.
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.

4Se c t i o N 2 — iM p o r t a N t Sa f e op e r a t i o N pr a c t i c e S
Use only attachments and accessories approved by the20.
manufacturer. Failure to do so can result in personal injury.
If situations occur which are not covered in this manual, use21.
care and good judgement. Contact Customer Support for
assistance and the name of you nearest servicing dealer..
Maintenance & Storage
Keep machine, attachments and accessories in safe1.
working order.
Allow a machine to cool at least five minutes before2.
storing. Never tamper with safety devices. Check their
proper operation regularly.
Check bolts and screws for proper tightness at frequent3.
intervals to keep the machine in safe working condition.
Also, visually inspect machine for any damage.
Before cleaning, repairing, or inspecting, stop the engine4.
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-speed5.
the engine. The governor controls the maximum safe
operating speed of engine.
Maintain or replace safety and instruction labels, as6.
necessary.
Follow this manual for safe loading, unloading,7.
transporting, and storage of this machine.
Always refer to the operator’s manual for important details8.
if the machine is to be stored for an extended period.
If the fuel tank has to be drained, do this outdoors.9.
Observe proper disposal laws and regulations for gas, oil,10.
etc. to protect the environment.
According to the Consumer Products Safety Commission11.
(CPSC) and the U.S. Environmental Protection Agency (EPA),
this product has an Average Useful Life of seven (7) years,
or 130 hours of operation. At the end of the Average Useful
Life 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.
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), Oxidizing Catalyst (OC), Secondary Air
Injection (SAI) and Three Way Catalyst (TWC) if so equipped.
Never store the machine or fuel container insidel.
where there is an open flame, spark or pilot light
as on a water heater, space heater, furnace, clothes
dryer or other gas appliances.
Operation
Do not put hands or feet near rotating parts. Contact with1.
the rotating parts can amputate hands and feet.
Do not operate machine while under the influence of2.
alcohol or drugs.
Never operate this machine without good visibility or light.3.
Always be sure of your footing and keep a firm hold on the
handles.
Keep bystanders away from the machine while it is in4.
operation. Stop the machine if anyone enters the area.
Be careful when tilling in hard ground. The tines may catch5.
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 crossing6.
gravel surfaces. Stay alert for hidden hazards or traffic. Do
not carry passengers.
Never operate the machine at high transport speeds on7.
hard or slippery surfaces.
Exercise caution to avoid slipping or falling.8.
Look down and behind and use care when in reverse or9.
pulling machine towards you.
Start the engine according to the instructions found in this10.
manual and keep feet well away from the tines at all times.
After striking a foreign object, stop the engine, disconnect11.
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 engine12.
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.13.
Engine exhaust contains carbon monoxide, an odorless
and deadly gas.
Muffler and engine become hot and can cause a burn. Do14.
not touch.
Use caution when tilling near fences, buildings and15.
underground utilities. Rotating tines can cause property
damage or personal injury.
Do not overload machine capacity by attempting to till soil16.
too deep at too fast of a rate.
If the machine should start making an unusual noise or17.
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 and18.
operating properly.
Never pick up or carry machine while the engine is running.19.

5Se c t i o N 2 — iM p o r t a N t Sa f e op e r a t i o N pr a c t i c e S
Spark Arrestor
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).
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.
Safety Symbols
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 operation. Allow engine
and muffler to cool before touching.
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!

Assembly & Set-Up 3
6
Assembly
References to the right and left side of tiller are determined from
behind the equipment in the operating position.
Handle
Identify the forward clutch cable and reverse clutch cables.1.
Fig. 3–1.
NOTE: Be sure not to kink cables while attaching.
Hook the “Z” end of the forward clutch cable (A) into the2.
forward tine engagement lever Fig. 3–2.
Hook the “Z” end of the reverse clutch cable (B) into the3.
reverse tine engagement lever Fig. 3–2.
Contents of Carton
One Tiller• One Handlebar Assembly• One Depth Gauge Assembly•
One Operator’s Manual• One Engine Operator’s Manual• One 20 oz. Bottle SAE30 Oil•
Forward Clutch Cable
Reverse Clutch Cable
Figure 3-1
Figure 3-2
B
A

7Se c t i o N 3 — aS S e M b l y & Se t -up
Remove the hex bolt and cupped washer from the right4.
side of the frame. Hold the cable guide bracket on the left
side of the frame as it will fall when the bolt is removed.
Step 1 in Fig. 3–3.
Insert the handle into the tiller frame as shown. Step 2 in5.
Fig. 3–3.
Insert the bolt through the cupped washer, frame, handle6.
and into the cable guide bracket (note the notch in the
cable guide bracket goes over the flange on the frame.)
Step 3 in Fig. 3–3.
Tighten the bolt securely after securing the handle brace as7.
seen in Fig. 3–4.
Locate the carriage bolt, bell washer and hand knob8.
packed with your tiller.
Insert the carriage bolt through the welded bracket on the9.
handle, bell washer, handle brace and into the hand knob.
See Fig. 3–4.
Select one of the three handle height positions (three10.
notches in the welded handle bracket) and tighten the
hand knob to secure the handle in the desired position. Fig.
3–4. Return to the lower handle and tighten the hex bolt
securely.
Depth Gauge
Disassemble the depth gauge assembly as seen in Fig. 3–5.1.
Retain the pin and clip for later reassembly.
Remove the two screws from the tail bracket as shown in2.
Fig. 3–6.
Insert the depth gauge bracket into the frame and reinstall3.
the two screws removed earlier. Tighten the hex bolts
securely. See Fig. 3–6.
Figure 3-3
Carriage Bolt
Handle
Brace
Bell Washer
Hand Knob
Figure 3-4
Cotter
Pin
Clevis
Pin
Depth
Stake
Tail Bracket
Figure 3-5
Screws
Tail Bracket
Figure 3-6
2
1
3

8Se c t i o N 3— aS S e M b l y & Se t -up
Insert the depth stake into the depth gauge bracket4.
assembly as seen in Fig. 3–7.
Secure the pin with the clip removed earlier. The depth5.
stake can be placed at various positions. For setup
purposes it is suggested that the depth stake be assembled
with the stake just above or level with the ground surface.
For further instructions on the Depth Stake refer to the
Maintenance & Adjustments Section of this manual.
Adjustments
Wheels
The tiller is shipped with the wheels adjusted so that the
machine sits level. The wheels need to be adjusted to meet
your tilling needs before operation. This adjustment is made
by removing the clevis pin from the wheel yoke and raising the
wheels to the desired height. See Fig. 3-8.
Set-Up
Gas & Oil Fill-Up
Service the Engine with gasoline and oil as instructed in the
separate Engine Operator’s Manual packed with your tiller. Read
the instructions carefully.
WARNING! Use extreme care when handling
gasoline. Gasoline is extremely flammable and the
vapors are explosive. Never fuel the machine
indoors or while the engine is hot or running.
Cotter
Pin Clevis Pin
Figure 3-7
Clevis
Pin
Cotter
Pin
Wheel Yoke
Depth
Stake
Figure 3-8

Controls & Features 4
9
Engine Controls
See the separate Engine Operator’s Manual for information and
functions of the engine controls.
Forward Tine Engagement Lever
The forward tine control lever is located beneath the upper
section of the handle. Squeezing the lever against the handle
engages the tine drive. Release the lever to stop the tines.
Reverse Tine Engagement Lever
The reverse tine control lever is located on top of the upper
section of the handle. Pulling the lever toward operator engages
the tines in reverse. Release the lever to stop the tines.
NOTE: Never engage both the forward and reverse tine drives at
the same time. Engaging both forward and reverse tine drives
at the same time could damage the belt drives and cause the
engine to stall.
Depth Stake
The depth stake controls the tilling depth.
Tines and End Caps
Tilling tines and end caps are used to cultivate, furrow and
prepare your garden for seeding. End caps are used to avoid
tilled soil from overflowing onto unwanted areas.
Handle Knob
The handle height may be adjusted. Loosen the knob to change
the position. Tighten hardware when complete.
Reverse Tine
Engagement Lever
Handle
Tiller Tines
End Cap
Depth Stake
Handle Knob
Forward Tine
Engagement Lever
Figure 4-1

Operation 5
10
Starting & Stopping Engine
Refer to the Engine Operator’s manual packed with your tiller for
instructions on starting and stopping the engine.
WARNING! Read, understand, and follow all the
instructions and warnings posted on the machine
and in this manual before operating.
WARNING! Be sure no one is standing in front of
the tiller while the engine is running or being
started.
Make sure that the tine clutch control is disengaged.1.
Setting the Depth
Yoke Forward
Place the wheel yoke so that wheels are forward (nearest to tines)
for shallow tilling, cultivating and transport. See Fig. 5-1.
Yoke to Back
Place the wheel yoke so that wheels are toward the rear — closest
to depth stake — for deep tilling and cultivating. See Fig. 5-2.
Depth Stake
The depth stake acts as a brake for the tiller and controls the depth
and speed at which the machine will operate. Remove the clevis
pin and hairpin clip to raise or lower depth stake. See Fig. 5-3.
Figure 5-1
Figure 5-2
Figure 5-3

11Se c t i o N 5 — op e r a t i o N
Figure 5-5
Handle Pressure
Further control of the tilling depth and travel speed can be
obtained by variation of pressure on the handles.
A downward pressure on the handles will reduce the working depth
and increase the forward speed. An upward pressure on the handles
will increase the working depth and reduce the forward speed.
The type of soil and working conditions will determine the actual
setting of the depth stake and the handle pressure required.
Transporting and Storing the Tiller
To transport and store the tiller move the throttle to the stop
position. Pivot the depth stake away from ground up between
wheels. See Fig. 5-3.
Using Your Tiller
Your tiller is designed for seed bed preparation, cultivating,
furrowing and mulching.
Tilling Procedure
When tilling, leave approximately eight inches of untilled soil
between the first and second tilling paths, then make the third
path between the first and second, Fig. 5-4.
In some soils, the desired depth is obtained the first time over
the garden. In other soils, the desired depth is obtained by going
over the garden two or three times. Passes should be made
across the length and width of the garden alternately. Rocks
which are turned up should be removed from the garden area.
Cultivating Procedures
For cultivating, a two to three inch depth is desirable. The tine
width can be reduced to 13 inches by removing the outer tines
completely from the tiller. See the Maintenance & Adjustments
Section for instructions on removing the tines.
When laying out plant rows, be sure to allow enough width to
permit cultivation between the rows. In growing corn or similar
crops, check-row planting will permit cross cultivation and
practically eliminate hand hoeing. See Fig. 5-5.
Other Uses
The tiller has many uses other than tilling and cultivating a
garden. One of these is the preparation of lawn area for seeding.
The tiller will prepare a deep seed bed which will be free of hard
untilled spots, allowing a better stand of grass to grow. The tiller
is very useful for loosening hard soil for excavation with a shovel;
No tedious handwork will be necessary. Your tiller may be used
for mixing compost in the pile or for mixing it with the soil in
your garden. This should be done after the soil has been broken
to the full working depth. The compost should be worked in
to a depth of six to seven inches. This may be done by working
the length of the garden and then by making separate passes
across its width. The addition of decayed organic matter will
substantially increase the fertility of your garden. For proper
decaying action, fertilizer should be applied and worked in with
the mulch materials. Breaking up leaves and straw and mixing it
with several inches of soil allows proper aeration of the plant root
system and retards the growth of weeds.
12 34 5
Figure 5-4

WARNING! Disconnect the spark plug wire and
ground it against the engine before performing any
repairs.
Maintenance
Engine
Refer to the separate Engine Operator’s Manual for engine
maintenance instructions.
Tines
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.
NOTE: 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 machine.
Lubrication
Pivot Points
Remove the belt cover and lubricate all the pivot points and
linkages at least once a season with light oil. Keep the belts free
of lubrication.
Tine Shafts
Remove the tine assemblies and lubricate the tine shafts at least
once a season.
Wheel Shafts
Remove the wheel assemblies and lubricate the axle shafts at
least once a season.
Chain Drive
The chain drive is pre-lubricated and sealed at factory.
Adjustments
Cable Adjustment
From time to time you may need to adjust the tension on the
forward and reverse tine engagement cables. See Fig. 6-1.
Disconnect and ground the spark plug wire against the1.
engine.
Adjust either the forward or reverse clutch cable by2.
loosening the hex nut. See Fig. 6-2.
Turn the cable collar section one or two turns to increase or3.
decrease tension on the cable. See Fig. 6-3.
Reverse Tine
Engagement
Cable
Forward Tine
Engagement
Cable
Figure 6-1
Hex Nut
Figure 6-2
Cable Collar
Figure 6-3
Maintenance & Adjustments 6
12

Retighten the lock nut against the cable collar. See Fig. 6-4.4.
With the forward and reverse tine engagement handles in5.
neutral — released — position, pull the starter rope several
times. The tines should not turn.
If they turn forward, adjust the forward tine engagement6.
cable to release tension using the previous steps in this
section. If the tines turn toward rear, adjust the reverse tine
engagement cable to lesson the tension as with previous
steps.
Check again for correct tension on cables.7.
End Caps
The end cap, which is used to prevent tilled soil from overflowing
onto unwanted areas, are removable from the axle. Remove the
hairpin clip and clevis pin that secure each end cap and slide the
end caps off the axle. See Fig. 6-5.
Tines
With the outer tines installed, the working width of the machine
is 24 inches. This width may be expanded to 26 inches by
removing the clevis and cotter pins, sliding each outer tine
outward away from the center of the tiller and securing the pins
in the holes provided. See Fig. 6-6.
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 the engine and the entire tiller1.
thoroughly. Lubricate the tiller as described in the
lubrication instructions.
The use of pressure washers is not recommended for2.
cleaning your tiller. 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 storage3.
instructions.
Wipe tines with oiled rag to prevent rust.4.
Store tiller in a clean, dry area. Do not store next to5.
corrosive materials, such as fertilizer.
NOTE: When storing any type of power equipment in
an unventilated area 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.
Hex Nut
Figure 6-4
Clevis Pin
End Cap
Cotter Pin
Figure 6-5
Cotter Pin
Clevis Pin
End Cap
Outer Tine
Figure 6-6
13Se c t i o N 6 — Ma i N t e N a N c e & ad j u S t M e N t S

Belt Replacement
Reverse Drive Belt
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 the1.
engine.
Remove the belt cover from the left side of the tiller by2.
removing the two self-tapping screws and hex stop nut
and washer. See Fig. 7–1.
Remove belt from transmission pulley and then from3.
around the reverse idler pulley. See Fig. 7–2.
To reassemble the new belt, follow the instructions in4.
reverse order. Be sure to place the wider side of the belt
against transmission and idler pulley while slimmer side
goes over the engine pulley. See Fig. 7–2.
NOTE: Upon reassembly, make certain the belt is routed
over the idler pulley and inside of belt keepers by engine
pulley. See Fig. 7–2.
Self-tapping Screws
Hex Stop Nut
& Washer
Figure 7-1
Transmission
Pulley
Reverse Idler
Pulley
Engine Pulley
Figure 7-2
Service 7
14

Forward Drive Belt
Remove the reverse drive belt as instructed in the previous1.
section.
Remove the return spring. See Fig. 7–3.2.
Remove the idler pulley bolt and move the belt from under3.
the idler pulley keeper. See Fig. 7–4.
The forward idler belt will not clear the belt keepers near4.
the engine pulley. You must remove the reverse idler
bracket to allow the belt to move off of the engine pulley.
Remove the two securing screws and move the bracket
toward the transmission pulley. Retain the screws for
reassembly. See Fig. 7–5.
Remove the belt from the reverse idler pulley and then5.
from around the transmission pulley. See Fig. 7–6.
To reassemble the new belt, follow the instructions in6.
reverse order. Be sure to place the wider side of the belt
away from the engine and transmission pulleys.
NOTE: Upon reassembly, make certain that the idler pulley
keeper is as shown in Fig. 7–4. Take note of the notch
on the bottom of the keeper and the alignment when
reassembling with the replacement belt.
Return Spring
Figure 7-3
Idler Pulley Keeper
Idler Pulley
Bolt
Figure 7-4
Screws
Figure 7-5
Engine Pulley
Figure 7-6
15Se c t i o N 7 — Se r v i c e

Problem Cause Remedy
Tines do not engage Foreign object lodged in tines1.
Tine clevis pin(s) missing2.
Pulley and idler not in correct adjustment3.
Not shifting properly4.
Control cable not adjusted properly5.
Belt worn and/or stretched6.
Dislodge foreign object1.
Replace tine clevis pin(s)2.
Take tiller to authorized service dealer3.
Refer to the Controls & Features Section for4.
proper shifting procedures
Adjust control cable5.
Replace belt6.
Tines skip over ground Improper rotation1. Forward rotation should only be used on soil1.
that has already been tilled, not on virgin soil
Wheels do not engage Clevis pin missing1.
Tiller is not being shifted properly2.
Control cable not adjusted properly3.
Belt worn and/or stretched4.
Replace clevis pin1.
Refer to Controls & Features Section for2.
proper shifting procedures
Adjust control cable3.
Replace belt4.
Troubleshooting 8
16

Replacement Parts 9
17
Component Part Number and Description
642-0002 Inner Right Hand Tine
642-0003 Inner Left Hand Tine
642-0023 Outer Left Hand Tine
642-0024 Outer Right Hand Tine
714-04043 Cotter Pin
911-0415 Clevis Pin
954-0428 Forward V-Belt,
954-0429 Reverse V-Belt
946-0918 Forward Cable
746-0953 Reverse Cable
734-1268 Wheels, 8” x 1.75”
NOTE: Download a complete Parts Manual, refer to customer support on page 2. Be sure to have your model number and serial
number ready. Refer to page 2 for more information regarding locating your model and serial numbers.

18
08.08.08
For equipment purchased in Canada only.
THREE 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 three (3) 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;
In the U.S.A.: Check your Yellow Pages, or contact 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, 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 LLC, P.O. BOX 361131 CLEVELAND, OHIO 44136-0019; Phone: [phone]
MTD Products Ltd., P. O. BOX 1386, KITCHENER, ON N2G 4J1; Phone: [phone]

19
For equipment purchased in United States only.
CONSUMER’S WARRANTY
COLUMBIA OUTDOOR
THREE YEARS- 120 Hrs. LIMITED WARRANTY
For three (3) years-120 hrs. whichever come first, from the date of original purchase of COLUMBIA products, COLUMBIA will
either repair or replace, at its option, free of charge, F.O.B. factory or authorized service firm, any part found to be defective in
material and workmanship. All transportation charges on parts submitted for replacement under this warranty must be paid by
the purchaser unless return is requested by COLUMBIA.
This warranty DOES NOT apply to any part which has become inoperative through misuse, excessive use, accident, neglect,
improper maintenance or alterations by unauthorized persons.
This limited warranty does not extend to the replacement of parts which are not defective, but where regular usage has ex-
hausted the life of the part.
TRACTOR ATTACHMENT WARRANTY
Mower decks included with, or sold separately, as an attachment for COLUMBIA garden tractors will be warranted according to
the above terms of the COLUMBIA THREE (3) YEARS - 120 hrs. limited consumer warranty.
ALL OTHER ATTACHMENTS will be sold under the same conditions as above except the warranty will be ONE YEAR FROM
DATE OF ORIGINAL PURCHASE.
ENGINES, ELECTRIC START KITS, HYDRO-GEAR, PEERLESS TRANSMISSIONS AND PEERLESS TRANSAXLES ARE
WARRANTED BY THEIR RESPECTIVE MANUFACTURER. ALL CLAIMS AGAINST THESE COMPONENTS MUST BE
HANDLED THROUGH THE RESPECTIVE MANUFACTURERS SERVICE DEALERS.
Belts, light bulbs, clutch parts (friction wheels), grass bags, tires, seats, rider deck wheels and cutting blades are covered by a 60
day limited warranty.
Batteries are warranted against defect for 90 days at 100% of their value and 50% of their value for the period between the 91st
day and the 120th day.
Fuses, shear bolts and blade adapters are considered consumable items and as such are not warranted.
Note: Regular maintenance replacement parts and related inspections and adjustments are excluded from coverage when made
as part of normal maintenance service.
EXTERIOR FINISH
NORMAL DETERIORATION OF THE EXTERIOR FINISH DUE TO USE OR EXPOSURE TO THE ELEMENTS, CORROSIVE
PRODUCTS ETC… IS NOT WARRANTED. LABELS ARE COVERED FOR 1 YEAR FROM THE ORIGINAL DATE OF PUR-
CHASE.
PERSONAL USE
THE FOREGOING PARAGRAPHS CONSTITUTE COLUMBIA’S ENTIRE WARRANTY WITH RESPECT TO ANY PRODUCT
PURCHASED AND USED FOR PERSONAL, FAMILY, HOUSEHOLD/RESIDENTIAL PURPOSES, AS DISTINGUISHED FROM
COMMERCIAL USAGE.
COMMERCIAL USE
ALL APPLICATIONS OTHER THAN PERSONAL USE AS OUTLINED ABOVE, ARE CONSIDERED COMMERCIAL USAGE.
COLUMBIA products purchased by a company or used for commercial purposes are not covered by any warranty.
WARRANTY SERVICE CAN ONLY BE PERFORMED BY AN AUTHORIZED COLUMBIA SERVICE DEALER. ANY NON-
ORIGINAL EQUIPMENT REPLACEMENT PART USED ON OR IN A PRODUCT UNDER WARRANTY WILL BE EXCLUDED
FROM THAT WARRANTY COVERAGE, AS WILL BE ANY RELATED DAMAGED COMPONENTS RESULTING FROM THE
INSTALLATION OF A NON-COLUMBIA REPLACEMENT PART.
MTD LLC, P.O. BOX 361131 CLEVELAND, OHIO 44136-0019; Phone: [phone].10

20
Notes