Page 1
Operator's Manual
Original Operating Instructions
Mini-Cultivator
MC43 Series and
Dethatcher
Get parts online at
www.GetEarthquake.com
MC43E
(electric start)
Includes models:
MC43
MC43E
MC43ECE
MC43CE
MC43RCE
MD43
MC43
(manual start)
P/N: OMMC43VE
Rev. 06/30/11
Page 2
Operator's Manual
MC43 Series Mini-Cultivator
INTRODUCTION
Congratulations on your investment in quality. Thank you for purchasing a mini-cultivator from Earthquake. We have worked to
ensure that the mini-cultivator meets the highest standards for usability and durability. With proper care, your mini-cultivator will
provide many years of service.
Please read this entire manual before installation and use. Earthquake reserves the right to change, alter or improve the
product and this document at any time without prior notice.
CONTENTS
Introduction ....................................................................................................................................................................................................................................... 2
Warnings and Safety Precautions ...........................................................................................................................................................................................3-7
Specications/Features ..................................................................................................................................................................................................................8
Assembly .......................................................................................................................................................................................................................................9-10
Operation ................................................................................................................................................................................................................................... 11-13
Maintenance & Storage ......................................................................................................................................................................................................... 14-17
Troubleshooting and Repair ................................................................................................................................................................................................17-18
Parts Breakdown ...................................................................................................................................................................................................................... 19-25
EK43 Border-Edger Kit Installation ...........................................................................................................................................................................................26
DK43 Dethatcher Kit Installation ..............................................................................................................................................................................................27
Warranty ..................................................................................................................................................................................................................................... 28-29
EC Declarations of Conformity ...........................................................................................................................................................................................30-31
FEDERAL EMISSIONS INFORMATION
Earthquake warrants to the retail purchaser, that this small, o-road engine was designed, built and equipped to conform at the
time of initial sale to all applicable regulations of the U.S. Environmental Protection Agency (EPA).
REGISTRATION, SERVICE AND MAINTENANCE LOG
Record the model number and serial number in the space provided for easy reference. Warranty is valid only if the completed registration is received by Earthquake within 30 days of purchase. You can register your warranty online by visiting www.getearthquake.
com. If you do not have a computer, call our customer service department at (800) 345-6007 Mondays through Fridays from 8 a.m.
to 5 p.m. CST.
OWNERSHIP RECORDS
Owner’s Name:
Owner’s Address:
City: State/Province: Zip Code/Postal Code:
Model Number: Serial Number:
Date of Purchase:
Notes:
This instruction book contains information for several models. Read and keep this book for future reference. This book contains
important information on SAFETY, ASSEMBLY, OPERATION, AND MAINTENANCE. The owner must be certain that all the product information is included with the unit. This information includes the INSTRUCTION BOOKS, the REPLACEMENT PARTS and
the WARRANTIES. This information must be included to make sure state laws and other laws are followed.
Check for parts online at www.getearthquake.com or call 800-345-6007 M-F 8-52
Page 3
Operator's Manual
MC43 Series Mini-Cultivator
WARNINGS AND SAFETY PRECAUTIONS
OWNER’S RESPONSIBILITY
Accurate assembly and safe and eective use of the machine is
the owner’s responsibility.
• Readandfollowallsafetyinstructions.
• Carefullyfollowallassemblyinstructions.
• Maintainthemachineaccordingtodirectionsandschedule
included in this Earthquake operator’s manual.
• Ensurethatanyonewhousesthemachineisfamiliarwithall
controls and safety precautions.
SPECIAL MESSAGES
Your manual contains special messages to bring attention to
potential safety concerns, machine damage as well as helpful
operating and servicing information. Please read all the information carefully to avoid injury and machine damage.
NOTE: General information is given throughout the manual
that may help the operator in the operation or service of the
machine.
This symbol points out important safety instructions which if not followed could endanger your
personal safety. Read and follow all instructions
in this manual before attempting to operate this
equipment.
WARNING
WARNING INDICATES A HAZARD WHICH, IF NOT
AVOIDED, COULD RESULT IN DEATH OR SERIOUS IN
JURY AND/OR PROPERTY DAMAGE.
CAUTION
CAUTION INDICATES YOU CAN BE HURT OR YOUR
EQUIPMENT DAMAGED IF THE SAFETY INSTRUC
TIONS THAT FOLLOW THIS SIGNAL WORD ARE NOT
OBEYED.
IMPORTANT
INDICATES HELPFUL INFORMATION FOR PROPER AS
SEMBLY, OPERATION, OR MAINTENANCE OF YOUR
EQUIPMENT.
WARNING
CALIFORNIA PROPOSITION 65 WARNING
ENGINE EXHAUST FROM THIS PRODUCT CONTAINS
CHEMICALS KNOWN TO THE STATE OF CALIFORNIA
TO CAUSE CANCER, BIRTH DEFECTS, OR OTHER RE
PRODUCTIVE HARM.
BEFORE OPERATING ENGINE:
Please read this section carefully. Read entire operating and
maintenance instructions for this product. Failure to follow
instructions could result in serious injury or death. Operate the
machine according to the safety instructions outlined here and
inserted throughout the text. Anyone who uses this machine
must read the instructions and be familiar with the controls.
WARNING
YOU MUST READ, UNDERSTAND AND COMPLY WITH
ALL SAFETY AND OPERATING INSTRUCTIONS IN
THIS MANUAL BEFORE ATTEMPTING TO SETUP AND
OPERATE YOUR MACHINE.
FAILURE TO COMPLY WITH ALL SAFETY AND
OPERATING INSTRUCTIONS CAN RESULT IN LOSS OF
MACHINE CONTROL, SERIOUS PERSONAL INJURY TO
YOU AND/OR BYSTANDERS, AND RISK OF EQUIPMENT
AND PROPERTY DAMAGE. THE TRIANGLE IN THE TEXT
SIGNIFIES IMPORTANT CAUTIONS OR WARNINGS
WHICH MUST BE FOLLOWED.
Intended Use /
Foreseeable Misuse
This is a motorized mini-cultivator that cultivates and loosens
soil. It is pedestrian controlled. It has a petrol-fuelled internal
combustion engine that powers the tines. It shall not be used
for any other purpose.
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Page 4
Operator's Manual
MC43 Series Mini-Cultivator
GENERAL SAFETY RULES
• Read, understand, and follow all instructions on the machine
and in the manual(s). Be thoroughly familiar with the controls
and the proper use of the machine before starting.
• Use this equipment for its intended purpose only.
• Familiarize yourself with all of the safety and operating
decals on this equipment and on any of its attachments or
accessories.
• Do not put hands or feet near or under rotating parts.
• Only allow responsible individuals who are familiar with the
instructions to operate the machine. Do not allow children
to operate this machine. Do not allow adults to operate the
machine without proper instruction.
• Thoroughly inspect the area where the machine is to be
used and remove all foreign objects. Your equipment can
propel small objects at high speed causing personal injury
or property damage. Stay away from breakable objects, such
as house windows, automobile, greenhouses, etc.
• Wear appropriate clothing such as a long-sleeved shirt or
jacket. Also wear long trousers or slacks. Do not wear shorts.
Never wear sandals, sneakers, or open shoes, and never
operate the machine with bare feet.
• Do not wear loose clothing or jewelry. They can get caught in
moving parts. Always keep hands, feet, hair and loose clothing
away from any moving parts on engine and machine.
• Always wear safety goggles or safety glasses with side shields
when operating the machine to protect your eyes from
foreign objects which can be thrown from the unit. Always
wear a protective hearing device.
• Always wear work gloves and sturdy footwear. Wear
footwear that will improve footing on slippery surfaces.
Leather work shoes or short boots work well for most people.
These will protect the operator’s ankles and shins from small
sticks, splinters, and other debris.
• It is advisable to wear protective headgear to prevent the
possibility of being struck by small ying particles, or being
struck by low hanging branches, twigs, or other objects
which may be unnoticed by the operator.
• Do not operate the machine without proper guards or other
safety protective devices in place.
• See manufacturer’s instructions for proper operation and
installation of accessories. Only use accessories approved
by the manufacturer.
• Operate only in daylight or good articial light.
• Do not operate product when fatigued or under the
influence of alcohol, drugs or other medication which
can cause drowsiness or aect your ability to operate this
machine safely.
• Never operate machine in wet grass. Always be sure of your
footing; keep a rm hold on the handle and walk; never run.
• Watch for traffic when operating near, or when
crossing roads.
• If the equipment should start to vibrate abnormally, stop the
engine (motor), disconnect the spark plug wire and prevent
it from touching the spark plug. Check immediately for cause.
Vibration is generally a warning of trouble. If the noise or
vibrations of the machine increase, stop immediately and
perform an inspection.
• Never leave the machine unattended when the engine is
running. Remove the wire from the spark plug.
• Regularly inspect the machine. Make sure parts are not bent,
damaged or loose.
• Temperature of muer and nearby areas may exceed 150°
F (65° C). Allow muer and engine areas to cool before
touching. Never pick up or carry the machine while the
engine is running.
• Prolonged exposure to noise and vibration from gasoline enginepowered equipment should be avoided. Take intermittent
breaks and/or wear ear protection from engine noise as well as
heavy work gloves to reduce vibration in the hands.
• Keep all screws, nuts and bolts tight.
• Do not transport the machine from one place to another
with the engine running.
• When moving the packaged machine, always do so with a
partner.
• Check local regulations for age restrictions on use of this
machine.
PRODUCTSPECIFIC SAFETY RULES
• Do not cultivate above underground utilities, including water
lines, gas lines, electric cables, or pipes. Do not operate the
machine on terrain/soil with large rocks and foreign objects
which can damage the equipment.
• After striking a foreign object, stop the engine. Remove the
wire from the spark plug. Inspect the machine for damage. If
damaged, repair before starting and operating the machine.
• The tines of the cultivator should not rotate when the engine
is idling. If it does rotate when engine is idling, contact
Earthquake for instructions.
• If an object becomes lodged in the tines, turn engine o,
remove the wire from the spark plug and secure, allow to
cool before attempting to remove the foreign object.
• The clutch will transfer maximum power after about two
hours of normal operation. During this break-in period clutch
slippage may occur. The clutch should be kept free of oil or
other moisture for ecient operation.
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Page 5
ENGINE SAFETY PRECAUTIONS
Warning Carbon Monoxide Poisoning
Engines give off carbon monoxide, an odorless, colorless,
poisonous gas. Carbon monoxide may be present even if you do
not smell or see any engine exhaust. Breathing carbon monoxide
can cause nausea, fainting or death, in addition to drowsiness,
dizziness and confusion. If you experience any of these
symptoms, seek fresh air and medical attention immediately.
If your product comes with a separate engine manual, be
sure to read and follow all safety and warning precautions
outlined there, in addition to any in this manual.
Preventing Carbon Monoxide Poisoning
• Always start and run engine outdoors. Do not start or run
engine in an enclosed area, even if doors or windows are open.
• Never try to ventilate engine exhaust indoors. Carbon
monoxide can reach dangerous levels very quickly.
• Never run engine outdoors where exhaust fumes may be
pulled into a building.
• Never run engine outdoors in a poorly ventilated area where
the exhaust fumes may be trapped and not easily taken
away. (Examples include: in a large hole or areas where hills
surround your working area.)
• Never run engine in an enclosed or partially enclosed area.
(Examples include: buildings that are enclosed on one or
more sides, under tents, car ports or basements.)
• Always run the engine with the exhaust and muer pointed
in the direction away from the operator.
• Never point the exhaust muer towards anyone. People
should always be many feet away from the operation of the
engine and its attachments.
• Do not change the engine governor settings or over-speed
the engine.
Gasoline Fires and Handling Fuel Safely
Use extra care in handling gasoline and other fuels. They are
ammable and vapors are explosive.
• When storing extra fuel be sure that it is in an appropriate
container and away from any re hazards.
• Prevent re and explosion caused by static electric discharge.
Use only nonmetal, portable fuel containers approved by the
Underwriter’s Laboratory (U.L.) or the American Society for
Testing & Materials (ASTM).
• Always ll fuel tank outside in a well ventilated area. Never
fill your fuel tank with fuel indoors. (Examples include:
basement, garage, barn, shed, house, porch, etc.) Never
ll tank near appliances with pilot lights, heaters, or other
ignition sources. If the fuel has to be drained, this should
Operator's Manual
MC43 Series Mini-Cultivator
WARNING
ENGINES GIVE OFF CARBON MONOXIDE, AN ODOR
LESS, COLORLESS, POISONOUS GAS. CARBON MON
OXIDE MAY BE PRESENT EVEN IF YOU DO NOT SMELL
OR SEE ANY ENGINE EXHAUST. BREATHING CAR
BON MONOXIDE CAN CAUSE NAUSEA, FAINTING OR
DEATH, IN ADDITION TO DROWSINESS, DIZZINESS
AND CONFUSION.
IF YOU EXPERIENCE ANY OF THESE SYMPTOMS, SEEK
FRESH AIR AND MEDICAL ATTENTION IMMEDIATELY.
CAUTION
HOT GASES ARE A NORMAL BYPRODUCT OF A FUNC
TIONING CATALYTIC CONVERTER. FOLLOW ALL SAFE
TY INSTRUCTIONS TO PREVENT BURNS AND FIRES.
DO NOT ALTER/MODIFY ENGINE:
NEVER ALTER OR MODIFY THE ENGINE FROM THE
FACTORY. SERIOUS INJURY OR DEATH MAY OCCUR IF
ENGINE IS MODIFIED OR ALTERED.
WHEN WORKING ON OR REPLACING PARTS FOR THE
ENGINE OR PRODUCT, YOU MUST ALWAYS DISCON
NECT SPARK PLUG WIRE FROM THE SPARK PLUG AND
KEEP IT AWAY FROM THE SPARK PLUG.
be done outdoors. The drained fuel should be stored in a
container specically designed for fuel storage or it should
be disposed of carefully.
• Never remove the fuel cap or add fuel with the engine
running. Stop engine and allow to cool before lling.
• Do not smoke.
• Never drain fuel from engine in an enclosed area.
• Always wipe up excess (spilled) fuel from engine before
starting. Clean up spilled fuel immediately. If fuel is spilled,
do not start the engine but move product and fuel container
from area. Clean up spilled fuel and allow to evaporate and
dry after wiping and before starting.
• Allow fuel fumes/vapors to escape from the area before
starting engine.
• Test the fuel cap for proper installation before starting and
using engine.
• Always run the engine with fuel cap properly installed on
the engine.
• Always unscrew gas cap vent screw while engine is running.
• Never smoke while relling engine fuel tank.
• Do not store engine with fuel in fuel tank indoors. Fuel and
fuel vapors are highly explosive.
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Page 6
Operator's Manual
MC43 Series Mini-Cultivator
• During storage, screw down gas cap vent screw tightly.
• Never pour fuel from engine fuel tank.
• Never siphon fuel by mouth to drain fuel tank.
• Always have an adult fill the fuel tank and never allow
children to ll the engine.
• Never allow an adult or anyone under the inuence of drugs
or alcohol to ll engine.
• When storing gasoline or equipment with fuel in the tank,
store away from furnaces, stoves, water heaters or other
appliances that have a pilot light or other ignition source
because they can ignite gasoline vapors.
BURNS AND FIRES
The muer, muer guard and other parts of the engine become extremely hot during the operation of the engine. These
parts remain extremely hot after the engine has stopped.
Prevention of Burns and Fires
• Neverremovethemuerguardfromtheengine.
• Nevertouchthemuerguardbecauseitisextremelyhot
and will cause severe burns.
• Nevertouch partsofthe engine that become hot after
operation.
• Alwayskeepmaterialsanddebrisawayfrommuerguard
and other hot parts of the engine to avoid res.
• Thisengineisdesignedtooperateusingacatalyticconverter
which contributes to the engine’s compliance with the EPA.
CHILDREN AND BYSTANDERS
Tragic accidents can occur if the operator is not alert to the
presence of children and/or bystanders. Never assume that
others will remain where you last saw them.
• Keep the area of operation clean of all persons, especially
small children and pets. Keep children under the watchful
care of a responsible adult.
• Be alert and turn machine o if children enter the area.
• Before and while moving backwards, look behind and down
for small children.
• Never allow children to operate the machine.
• Use extra care when approaching blind corners, shrubs, trees,
or other objects that may obscure vision.
SERVICE
• Always stop the engine whenever you leave the equipment,
before cleaning, repairing or inspecting the unit. Engine
should be turned o and cool, spark plug wire must be
removed from spark plug before any repairs or adjustments
are attempted. Never make adjustments or repairs with the
engine (motor) running. Disconnect the spark plug wire,
and keep the wire away from the plug to prevent accidental
starting. Remove the ignition key if equipped with an electric
start.
• Always wear eye protection when you make adjustments or
repairs.
• Keep all nuts and bolts tight and keep equipment in good
condition.
• Never tamper with safety devices. Check their proper
operation regularly.
• When servicing or repairing the machine, do not tip the
machine over or up unless specically instructed to do so in
this manual. Service and repair procedures can be done with
the machine in an upright position. Some procedures will be
easier if the machine is lifted on a raised platform or working
surface.
• To reduce re hazard, keep machine free of grass, leaves,
or other debris build-up. Clean up oil or fuel spillage. Allow
machine to cool before storing.
• Stop and inspect the equipment if you strike an object.
Repair, if necessary, before restarting.
• Clean and replace safety and instruction decals as necessary.
• To guard against engine over-heating, always have engine
debris lter mounted and clean.
• Inspect machine before storage. When not in use, disconnect
spark plug lead and store indoors in a dry place locked or
otherwise inaccessible to children.
• Use only original equipment parts from Earthquake,
including all nuts and bolts.
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Page 7
Operator's Manual
LBLMC43W
WARNING
TO AVOID SERIOUS INJURY
• Read the Operator’s Manual.
• Know the location and functions of all controls.
• Keep all safety devices and shields in place and working.
• Never allow children or uninstructed adults to operate machine.
• Shut off engine before manually unclogging tines or making repairs.
• Keep bystanders away from machine.
• Keep away from rotating parts.
• Use extreme caution when reversing or pulling the machine towards you.
WARNING
KEEP AWAY FROM ROTATING TINES
Rotating tines will cause injury.
DIELINE SIZE: 8” x 2.25”
DIELINE SIZE: 70mm x 45mm
MC43 Series Mini-Cultivator
SAFETY DECALS
This mini-cultivator has been designed and manufactured to provide you with the safety and reliability you would expect from an
industry leader in outdoor power equipment manufacturing.
Reading this manual and the safety instructions it contains will provide you with the necessary basic knowledge to operate this
equipment safely and eectively. We have placed a safety decal on the cultivator to remind you of some of this important information
while you are operating the unit.
These important safety decals are illustrated below, and are shown here to help familiarize you with the location and content of
the safety messages you will see as you perform normal cultivating operations. Please review these decals now, and if you have
any questions regarding its meaning or how to comply with these instructions, reread the complete safety instruction text in this
manual, or contact your local dealer.
Should a decal become unreadable because of being worn, faded, or otherwise damaged during the use of your mini-cultivator, please
use the part number information provided to order a replacement label from your local authorized dealer. These decals are easily
applied, and will act as a constant visual reminder to you, and others who may use the equipment, to follow the safety instructions
necessary for safe, eective operation of your mini-cultivator.
Part No. LBLMC43W
Warning Decal MC43E
Tine Shield Decal
WARNING AND OTHER DECALS FOR EUROPEAN MINICULTIVATOR MODELS
Wear ear and eye protection
while using product
Hot surfaces.
Do not touch.
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Keep away from
moving parts
Declared noise level
Serial Nameplate Details: MC43CE
ARDISAM, INC.
1160 8th Avenue | Cumberland, WI 54829 | USA
Serial No.
8420
Model: MC43ECE Type: Cultivator
Year: 2011 Mass: 20 kg
Max. Operating Speed: 6500 rpm
Serial Nameplate Details: MC43ECE
Serial Nameplate Details: MC43RCE
Page 8
SPECIFICATIONS
ENGINE DISPLACEMENT 43cc
FUEL TANK CAPACITY 36 ounces
OIL/GAS RATIO 50:1 - 2.6 ounces per gallon
OIL TYPE VIPER 2 CYCLE ENGINE OIL
(p/n 300400)
GAS TYPE UNLEADED REGULAR GAS
SPARK PLUG BM6A
SPARK PLUG GAP .028
TRANSMISSION GEAR DRIVE
GEAR RATIO 32:1
TILLING WIDTH 6” minimum - 10” maximum
TILLING DEPTH 4” maximum
TINE SPEED 250 rpm
WHEEL SIZE 1.375 x 7.0 inch diameter
WEIGHT OF UNIT MC43E = 46 lb / MC43 = 33 lb
MD43 = 57 lb
UNIT SIZE L x W x H inches) 23” x 20” x 20”
Operator's Manual
MC43 Series Mini-Cultivator
SOUND AND VIBRATION LEVELS
Model 2006/42/EC
Operator Ear
LPA (dBA)
MC43CE 71 93
MC43ECE 71 93
MC43RCE 71 93
Model 2006/42/EC
Hand/Arm Vibration
Max m/s
2
MC43CE 4.83
MC43ECE 4.83
MC43RCE 4.83
2006/42/EC
Sound Power Level
LWA (dBA)
2006/42/EC
Vibration Time Limit
EAV: 2h 9m
ELV: 8h 34m
EAV: 2h 9m
ELV: 8h 34m
EAV: 2h 9m
ELV: 8h 34m
FEATURES
throttle control lever
keyed eletric start
depth regulator
adjustable height
transport wheels
MC43E
MC43
throttle control lever
depth regulator
adjustable height
transport wheels
replaceable tines
replaceable tines
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Page 9
ASSEMBLY
UNPACK MINICULTIVATOR
1. Carefully lift the mini-cultivator out of the box, remove any
packing material and cut any ties holding the handlebar
pieces to the mini-cultivator assembly.
ASSEMBLY
1. Stand the mini-cultivator assembly upright with tines and
wheels on a level surface. Wheels should be set in the lowest
position. DO NOT place the mini-cultivator on a high surface
where it can fall and cause property damage or personal
injury.
2. Using two tee handle nuts (4640), two bolts (4642), and
two curved washers (4641), assemble the middle handlebar
(4693) to the lower handlebar (4695) that is already attached
to the mini-cultivator assembly. SEE FIGURE 1. The middle
handlebar can be installed in two positions one high and one
low. DO NOT overtighten the tee handle nuts.
4689
Operator's Manual
MC43 Series Mini-Cultivator
4690
4640
4641
4642
4693
4640
4641
4642
4695
3. Attach the upper right and left handlebars (4689 & 4690) to
the middle handlebar using the two remaining tee handle
nuts, bolts, and curved washers. SEE FIGURE 1. DO NOT
overtighten the tee handle nuts.
4. The drag stake is shipped with point facing upwards. Before
using, remove detent pin and turn the drag stake around
so the point is directed in the downward position facing towards the tines. Re-insert detent pin. SEE FIGURE 2.
For the Electric Start Mini-Cultivator Model MC43E, remove
the battery box cover and plug the white plastic connector from
the battery into the mating white plastic connector in the battery
box. SEE FIGURE 3. Make sure the ignition key is removed from
the ignition before connecting the wiring for the battery.
Figure 1: (Model MC43E shown. Figure 1 applies to both models MC43 &
MC43E.)
detent pin
drag stake pointed tip
Figure 2
Figure 3
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Page 10
FOR MODEL MC43E ELECTRIC START
CHARGING THE BATTERY
To charge the battery, check that the battery wiring is properly
connected and plug the battery charger (4681) into the side of
the battery box (4656) with matching three-prong plug. Plug
the other end of the battery charger into a standard 120V outlet
receptacle. Battery is fully charged when the LED light turns
GREEN on the external charger. The electric start mini-cultivator
(MC43E) will maintain a charge in the battery when the engine
is running.
Batteries may take as long as eight (8) hours to fully charge
depending on the original charge level of the battery.
NOTE: For long term storage protection, be sure that
the battery is fully charged and the white plastic battery
connector is disconnected. Place the battery box cover onto
the battery box and store in a dry place out of direct sunlight.
NOTE: Rechargeable batteries have a limited number of
charge cycles and may eventually need to be replaced.
Battery life and number of charge cycles vary by use.
Operator's Manual
MC43 Series Mini-Cultivator
WARNING
AVOID ELECTRICAL SHOCK! DO NOT USE BATTERY
CHARGER AROUND WATER OR IN WET CONDITIONS.
IMPORTANT
DO NOT SPRAY WATER ON OR NEAR THE ELECTRON
ICS OF THE MINICULTIVATOR AS THIS MAY RESULT IN
DAMAGE TO THE ELECTRICAL COMPONENTS.
DO NOT TRY TO START ENGINE WHILE THE BATTERY
CHARGER IS CONNECTED. THIS COULD DAMAGE THE
ENGINE AND BATTERY.
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Page 11
OPERATION
PREPARING ENGINE FOR STARTING
GAS AND OIL
Quality
To operate the engine, we recommend using “VIPER” brand
two-cycle oil (PN 300400) to ensure that the engine operates
correctly throughout the life of the engine. Use unleaded regular gas only.
NOTE: Viper oil can be purchased from our web site at www.
GetEarthquake.com.
Mixture
Run engine with a 50:1 ratio.
GAS OIL RATIO
1 gallon 2.6 ounces 50:1
2 gallons 5.1 ounces 50:1
5 gallons 13 ounces 50:1
MIXING FUEL AND FILLING FUEL TANK
Mixing Fuel
1. Fuel must be mixed in a container outside in a well ventilated
area.
2. Fill certied fuel container 1/4 full of recommended fuel.
3. Add recommended amount of 2 cycle oil.
4. Screw container cap on straight and tight.
5. Shake the container to mix fuel and oil.
6. Unscrew gas cap slowly to vent, add the remainder of fuel
requirements.
7. Wipe away any spilled fuel or oil and allow to evaporate before
moving or transporting.
Filling Fuel Tank
Operator's Manual
MC43 Series Mini-Cultivator
CAUTION
NEVER STORE ENGINE WITH FUEL IN THE TANK INDOORS.
FUEL AND FUEL VAPORS ARE HIGHLY FLAMMABLE.
NEVER MIX FUEL AND OIL DIRECTLY IN ENGINE FUEL
TANK. USE ONLY NONMETAL, PORTABLE FUEL CONTAIN
ERS APPROVED BY THE UNDERWRITER’S LABORATORY
U.L. OR THE AMERICAN SOCIETY FOR TESTING & MATE
RIALS ASTM.
AN ADULT MUST ALWAYS HANDLE AND FILL THE EN
GINE WITH FUEL.
ALWAYS HANDLE GAS IN A WELL VENTILATED AREA,
OUTDOORS, AWAY FROM FLAMES OR SPARKS.
DO NOT START ENGINE IF FUEL IS SPILLED. WIPE OFF
EXCESS FUEL AND ALLOW TO DRY. REMOVE ENGINE
FROM AREA TO AVOID SPARKS.
IMPORTANT
THIS ENGINE USES A GAS/OIL MIXTURE. DO NOT RUN ON
STRAIGHT GAS ONLY, ENGINE DAMAGE WILL RESULT.
DO NOT START ENGINE WITH BATTERY CHARGER CON
NECTED TO BATTERY. THIS COULD CAUSE DAMAGE TO
THE MINICULTIVATOR.
1. Shut-o engine and allow engine to completely cool before
relling the fuel tank.
2. Move to a well ventilated area, outdoors, away from ames
and sparks.
3. Clean debris from area around the fuel cap.
4. Loosen fuel cap slowly. Place the cap on a clean, dry surface.
5. Carefully add fuel without spilling.
6. Do not ll gas tank completely full, allow space for fuel to
expand.
7. Immediately replace fuel cap and tighten. Wipe o spilled
fuel and allow to dry before starting engine.
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Page 12
OPERATION TIPS
1. The clutch will transfer maximum power after about two
hours of normal operation. During this break-in period clutch
slippage may occur. The clutch should be kept free of oil and
other moisture for ecient operation.
2. Cultivate without placing excessive body weight on the unit.
The mini-cultivator operates most eciently with the weight
of the unit itself.
3. Never run engine indoors. Exhaust fumes are deadly.
Using the Screw Type, Manual Venting Gas Cap
Your mini-cultivator is equipped with a screw type, manual
venting gas cap.
1. Before starting the engine, turn the screw in the top of the
gas cap 2-3 turns (counterclockwise) to its venting position.
DO NOT turn the screw to the point that it stops (4-5 turns
counterclockwise). To ensure that gas will not spill during use,
check that the gas cap is screwed on tightly and the gas cap
screw is in the venting position.
2. After using the mini-cultivator and before putting away or
transporting it in a truck bed, screw the gas cap screw and
gas cap on (clockwise) tightly. This will prevent gas from
leaking during storage. The gas cap will not leak during storage if gas cap is tight and the screw at the top is tight.
STARTING AND STOPPING ENGINE
• Moveenginetoawellventilatedarea,outdoors,toprevent
carbon monoxide poisoning.
• Moveto anareaawayfromamesor sparks,toavoidignition of vapors if present.
• Removealldebrisfromaircleanerholesandgascaptoensure proper air ow.
Cold Engine Start: Starting engine for rst time or after engine
has cooled o or after running out of fuel.
1. Move choke lever to RUN position.
NOTE: Choke must be in the RUN position when pushing or
using the primer bulb.
2. Prime unit until primer hose is lled with gas.
NOTE: When using the primer bulb, allow the bulb to re-
turn completely to its original position between pushes.
3. Move choke lever to CHOKE position.
NOTE: choke position is dened by moving the choke lever
as far to the CHOKE position as possible.
4. Push rocker switch to the ON position.
Operator's Manual
MC43 Series Mini-Cultivator
WARNING
MAKE SURE THE UNIT IS IN A STABLE POSITION BE
FORE PULLING THE STARTER HANDLE.
WHEN THE UNIT STARTS TO FIRE OR RUN, RELEASE
THE THROTTLE CONTROL MOMENTARILY WITH YOUR
RIGHT HAND AND RETURN YOUR LEFT HAND TO THE
HANDLEBAR POSITION TO MAINTAIN CONTROL AND
STABILITY OF THE UNIT WITH BOTH HANDS.
CAUTION
IF ENGINE FAILS TO START AFTER TRYING STARTING
PROCEDURES, PLEASE CONTACT OUR CUSTOMER
SERVICE DEPARTMENT AT 8003456007.
STARTER ROPE CAN CAUSE AN UNANTICIPATED JERK
TOWARDS ENGINE. PLEASE FOLLOW INSTRUCTIONS
TO AVOID INJURY.
NEVER LEAVE ENGINE RUNNING WHILE UNATTEND
ED. TURN OFF AFTER EVERY USE.
NEVER CARRY MINICULTIVATOR FROM ONE LOCA
TION TO ANOTHER WHILE ENGINE IS RUNNING.
ALWAYS WEAR A PROTECTIVE HEARING DEVICE.
DO NOT START ENGINE IF FUEL IS SPILLED. WIPE OFF
EXCESS FUEL AND ALLOW TO DRY.
5. Squeeze throttle control with right hand. Grasp starter handle with left hand and pull out slowly, until it pulls slightly
harder. Without letting starter handle retract, pull rope with
a rapid full arm stroke. Let it return to its original position
very slowly until unit res or runs. Repeat this step every
time the starter rope is pulled.
NOTE: If engine fails to start after 5-6 pulls, push primer 1
time and pull starter rope again.
6. After engine starts running, move choke lever to HALF
CHOKE position until unit runs smoothly.
NOTE: Half choke is dened when the choke lever is be-
tween CHOKE and RUN.
7. Move choke lever to RUN position and move throttle to desired speed.
NOTE: Run at full throttle when possible. Do not let unit
idle for extended periods of time.
8. To stop engine, push rocker switch to OFF position.
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Page 13
Warm Engine Start:
1. Move choke lever to CHOKE position.
NOTE: choke position is dened by moving the choke lever
as far to the CHOKE position as possible.
2. Continue with Step 4 of Cold Engine Starting.
Hot Engine Start:
1. Continue with Step 4 of Cold Engine Starting.
2. If engine does not re, refer to Step 1 of Warm Engine Starting.
Operator's Manual
MC43 Series Mini-Cultivator
highest position
high
lowest position
FOR MODEL MC43E ELECTRIC START
1. Check that the battery is connected using the white plastic
connectors inside the battery box. Insert ignition key into
ignition and turn key to the START position until engine starts
running, then release key to the ON position. DO NOT hold
the ignition key in the START position longer than 3 seconds.
2. Run engine for 30 to 45 seconds at HALF CHOKE position
until engine warms up.
3. Move choke lever to RUN position and move throttle to
desired speed.
4. To stop, turn switch to OFF position on manual start models.
On electric start, turn ignition key to the OFF position.
DO NOT attempt to start engine in the following ways:
• DO NOT use starting uid.
• DO NOT spray ammable liquids or vapors into air cleaner,
carburetor or spark plug chamber.
• DO NOT remove spark plug and attempt to start engine.
Flammable fuel can spray out & ignite from a spark from spark
plug.
ADJUSTING WHEELS AND DRAG STAKE
The wheels on the mini-cultivator can be adjusted to one of three
positions. The lowest wheel position is used for transporting the
mini-cultivator across a smooth level surface while the engine is
not running. The two higher positions are used when cultivating
in soil and help stabilize the unit when cultivating at dierent
depths. SEE FIGURE 4.
To adjust wheels up or down, SEE FIGURES 5 AND 6.
1. Pull the locking metal sleeve against the spring until it releases
from one of the three holes in the vertical guide.
2. Slide the wheel set up or down to the desired position, and
release the locking metal sleeve until it locks into one of the
three holes in the vertical guide.
The drag stake is used to help regulate cultivating depth and
control the mini-cultivator from leaping forward during operation.
Resistance to forward motion is greatest when the drag stake is
set in its lowest position allowing for deeper cultivation.
Figure 4
Locking metal sleeve
spring
Figure 5
top hole
vertical guide
detent pin
drag stake pointed tip
Figure 6
To adjust the drag stake (SEE FIGURE 6:
1. Pull the pin out of the drag stake mount hole.
2. Position the drag stake so the pointed tip is directed
downward.
3. Insert the pin into the hole that achieves desired depth.
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Page 14
MAINTENANCE AND STORAGE
STEPS FOR WORKING ON EQUIPMENT
1. Turn o engine switch.
2. Disconnect the spark plug wire from the spark plug.
3. Securely place the disconnected spark plug wire away
from the spark plug and any metal parts. This must always
be done or arcing may occur between spark plug wire and
metal parts.
4. Replace or repair the part on the mini-cultivator.
5. Check all parts that were repaired, or removed during repair,
that they are secure and t correctly.
NOTE: All repair parts must come from the factory. Never
replace parts that are not specically designed for the
mini-cultivator.
6. Reconnect the spark plug wire.
MINICULTIVATOR MAINTENANCE
1. The transmission case has grease installed at the factory. It
is recommended that once a year the gear case be split by a
qualied service professional and the grease level checked.
Add a molylithium type grease only if level of grease is below
top of the gears. DO NOT OVERFILL.
2. Keep all screws, nuts, and bolts tight.
3. For cold weather operation, store the unit in a cool
environment. Transferring the unit from a cold to a warm
place can cause the build up of harmful condensation.
ENGINE MAINTENANCE
Please read the maintenance schedule and observe these
recommendations to extend the life of your engine.
Good maintenance is essential for safe, economical, and troublefree operation. It will also help reduce air pollution. To help
you properly care for your engine, the following pages include
a maintenance schedule, routine inspection procedures, and
simple maintenance procedures using basic hand tools. Other
service tasks that are more dicult, or require special tools, are
best handled by professionals and are normally performed by a
technician or other qualied mechanic.
Maintenance, replacement or repair of the emissions control
devices and systems may be performed by any non-road
engine repair establishment or individuals. However, items
must be serviced by an authorized dealer to obtain "no charge"
emissions control service.
The maintenance schedule applies to normal operating conditions.
If you operate your engine under unusual conditions, such as
sustained high-load or high-temperature operation, or use in
unusually wet or dusty conditions, consult your servicing dealer
for recommendations applicable to your individual needs and use.
Operator's Manual
MC43 Series Mini-Cultivator
CAUTION
PRACTICE SAFETY AT ALL TIMES. ENGINE MUST BE
TURNED OFF AND ALLOWED TO COOL, AND SPARK
PLUG WIRE MUST BE DISCONNECTED BEFORE AT
TEMPTING ANY MAINTENANCE OR REPAIR.
TO PREVENT ACCIDENTAL STARTING:
ENGINE MUST BE TURNED OFF AND COOL, AND
SPARK PLUG WIRE MUST BE REMOVED FROM SPARK
PLUG BEFORE CHECKING AND ADJUSTING ENGINE
OR EQUIPMENT.
TEMPERATURE OF MUFFLER AND NEARBY AREAS
MAY EXCEED 150° F 65° C. AVOID THESE AREAS.
CHECK MINICULTIVATOR OFTEN FOR LOOSE NUTS
AND BOLTS. KEEP THESE ITEMS TIGHTENED.
NEVER STORE ENGINE WITH FUEL IN THE TANK INSIDE
A BUILDING. POTENTIAL SPARKS MAY BE PRESENT
FOR IGNITION OF FUEL AND FUEL VAPORS.
AN ADULT MUST ALWAYS DO MAINTENANCE AND RE
PAIR ON ENGINE AND MINICULTIVATOR.
ENGINE MUST BE SHUTOFF, COOL, AND SPARK PLUG
WIRE REMOVED BEFORE ANY REPAIR OR MAINTE
NANCE CAN BE DONE.
MAINTENANCE SCHEDULE
Every 8
hours
MAINTENANCE ITEM
Clean Engine and
Check Bolts & Nut
Air Filter Check X
(See Air Filter section)
Spark Plug
(Gap .028”)
(See Spark Plug section)
* Service more frequently under dusty conditions
Clean * X
Replace X X
Check/
Adjust
Replace X
(daily)
X
Every 20
hours or
seasonally
X
Each
Year
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Page 15
Cooling Fins
Cooling ns, air inlets and linkages must be free from any debris
before each use.
Air Filter
Never run engine without air cleaner properly installed. Added
wear and engine failure may occur if air cleaner is not installed
on engine.
Service air cleaner every 3 months or after 20 hours of operation.
Clean lter daily in extremely dusty conditions.
Operator's Manual
MC43 Series Mini-Cultivator
IMPORTANT
NEVER TWIST AIR FILTERS WHEN CLEANING. ALWAYS PRESS.
Steps for Cleaning Air Filter (Ring Style Foam Filter) - See
parts breakdown section.
1. Wash in warm water with liquid detergent and water until
dirt and debris are removed. Press lter when washing, do
not twist.
2. Rinse in warm water until soap and dirt are removed.
3. Dry lter by wrapping in a clean cloth and pressing lter until it is dry.
4. Apply a lightweight motor oil or thin based machine oil to
the entire lter.
5. Remove excess oil.
6. Attach the lter and air cleaner cover to the engine
Steps for Cleaning Air Filter (Block Style Foam Filter) - See
“Parts Breakdown” section.
1. Before removing the air lter cover, move the choke lever to
the choke position. SEE FIGURE 7.
2. To remove air lter cover, squeeze the latch tabs on both sides
of the cover. SEE FIGURE 8.
3. Once the latch tabs are released, remove the air lter cover
by rotating the cover away from the engine. SEE FIGURE 9.
4. Remove the foam lter element SEE FIGURE 10 and replace
with a new oiled lter, or clean the original foam lter with
warm water and mild soap by following the previous steps
for cleaning the air lter. Remember to thoroughly oil the
foam lter with 30 or 40 weight motor oil and squeeze out
any excess oil.
5. Reinstall the foam lter, pressing it evenly in place to ensure that
the foam is fully seated into its sealed position. SEE FIGURE 11.
6. Replace the air lter cover so that it fully snaps into place and
is secured by the latch tabs. Check that the cover is securely
attached by pulling slightly on the cover. If the cover doesn’t
move when pulled, it is secure.
.
Figure 7
Figure 9
Figure 11
Figure 8
Figure 10
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Page 16
Spark Plug
The recommended spark plug is a NGK BM6A which cross
references to a Champion CJ8.
1. Check spark plug at the beginning of each season.
2. Disconnect the spark plug cap, and clean any debris from
around the spark plug area.
3. Remove spark plug and replace if any of the following occur;
pitted electrodes, burned electrodes, cracked porcelain, or
deposits around electrodes.
4. After analysis, seat spark plug and tighten with spark plug
wrench. Reconnect the spark plug wire.
• Reinstalloriginalsparkplug,tightenadditional1/2turn.
• Installingnewsparkplug,adjustsparkpluggapto.028”and
tighten additional 1/8 – 1/4 turn .
NOTE: Loose spark plug may overheat and damage engine.
Over tightened spark plug may damage threads in the
cylinder head.
Carburetor
Never tamper with factory setting of the carburetor.
cotter pin
Figure 12 (Front View)
Operator's Manual
MC43 Series Mini-Cultivator
cotter pin
hub collars
TINE REMOVAL AND INSTALLATION
To Remove Tines
1. Remove the cotter pins from each end of the tine shaft.
2. Slide the four tines o the shaft.
To Install Tines
1. First slide the inside tines onto each end of the tine shaft.
One inside tine is stamped with a “B” and the other is
stamped with a “C”.
2. Slide the outside tine “A” and tine “D” onto each end of the
shaft next. The tines should be installed in the correct order
so that they are positioned left to right A, B, C, D, as viewed
from the user’s position on the mini-cultivator. Make sure
that the hub collars on both the right and left pairs of tines
face each other so that there is adequate spacing between
the tine blades. SEE FIGURE 12.
3. Insert the cotter pins into the holes at each end of the tine
shaft to lock the tines into place.
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Page 17
TRANSPORTING YOUR MINICULTIVATOR
1. After using the mini-cultivator and before transporting it in a
truck bed, screw the gas cap screw and gas cap on (clockwise)
tightly. The gas cap will not leak during transporting if gas
cap is tight and the screw at the top is tight. Never transport
engine inside an enclosed space within a vehicle. Fuel or fuel
vapors may ignite causing serious injury or death.
2. If fuel is present in the fuel tank, transport in an open vehicle
in an upright position.
3. If an enclosed vehicle must be used, remove gas into an
approved red fuel container. DO NOT siphon by mouth.
4. Run engine to use up the fuel in the carburetor and fuel tank.
Always run engine in a well ventilated area.
5. Wipe away any spilled fuel from engine and mini-cultivator.
Allow to dry.
6. Gas cap and gas cap vent screw should be turned down tightly
before transporting mini-cultivator in a vehicle.
LONGTERM STORAGE
If your mini-cultivator will not be used for more than one
month, prepare it for long term storage.
Steps for Long Term Storage
1. Remove the remainder of the fuel from the gas tank into an
approved fuel container.
2. Store mini-cultivator engine in a vertical position.
3. Remove all debris from cultivator tines and engine.
Operator's Manual
MC43 Series Mini-Cultivator
CAUTION
TO AVOID INJURY OR DEATH, NEVER SIPHON FUEL BY
MOUTH.
NEVER STORE MINICULTIVATOR WITH FUEL IN THE
FUEL TANK INSIDE AN ENCLOSED AREA OR BUILDING.
TROUBLESHOOTING AND REPAIR
At Earthquake, we build quality and durability into the design
of our products; but no amount of careful design by us, and
careful maintenance by you, can guarantee a repair-free life for
your Earthquake Mini-Cultivator. Most repairs will be minor, and
easily xed by following the suggestions in the troubleshooting
guide in this section.
The guide will help you pinpoint the causes of common problems
and identify remedies.
For more complicated repairs, you may want to rely on your
retailer, an authorized service center or Earthquake. Earthquake
will make the necessary repairs if a service center is not available.
A parts breakdown is located toward the end of this manual.
We will always be glad to answer any questions you have, or
help you nd suitable assistance. To order parts or inquire about
warranty, call or e-mail us using the contact information found
in this section.
ORDERING REPLACEMENT PARTS
Parts can be obtained from the store where the mini-cultivator
was purchased or direct from the factory. To order parts visit
www.getearthquake.com or call 1-800-345-6007.
For other general questions, you can e-mail us at info@ardisam.
com.
Please include the following information with your order:
1) Part numbers
2) Part description
3) Quantity
4) Model number and serial number
SPARE PARTS
Only use approved Earthquake spares.
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Page 18
Operator's Manual
MC43 Series Mini-Cultivator
TROUBLESHOOTING GUIDE
PROBLEM POSSIBLE CAUSE REMEDY/ACTION
Engine will not start 1. Power switch o 1. Flip switch to ON position
2. Spark plug wire disconnected 2. Connect spark plug wire to spark plug
3. Out of fuel 3. Refuel
4. Spark plug wet, faulty or improperly
gapped
5. Throttle control not held open 5. Hold throttle control open when pulling recoil handle
6. Fuel line hose not positioned in bottom of gas tank
Engine runs rough, oods during
operation
Engine is hard to start 1. Stale fuel 1. Drain old fuel and replace with fresh. Use gas stabilizer at
Engine misses or lacks power 1. Clogged gas tank 1. Remove and clean gas tank
Engine runs, then quits 1. Gas cap not venting 1. Clean or replace gas cap, check vent
Engine revs too high 1. Carburetor out of adjustment 1. Call factory
Tines turn at idle 1. Idle speed too high 1. Adjust idle speed lower
MODEL MC43E ONLY
Charger won’t charge 1. Battery worn out 1. Replace with new battery
Key won’t start machine 2. Battery not charged 1. Charge battery
Contact service provider at 800-345-6007 if above remedies fail.
1. Dirty air lter 1. Clean or replace air lter
2. Choke partially engaged 2. Turn o choke
3. Carburetor out of adjustment 3. Call factory
2. Spark plug wire loose 2. Make sure spark wire is securely attached to spark plug
3. Dirty carburetor 3. Clean carburetor, use gas stabilizer, new gas can
4. Throttle control not held open 4. Prime unit 3 more times, then hold throttle open when
2. Clogged air lter 2. Clean or replace air lter
3. Carburetor out of adjustment or bad 3. Call factory
4. Spark plug wet, faulty or improperly
gapped
2. Plugged fuel lter 2. Clean or replace fuel lter
3. Carburetor out of adjustment or bad 3. Call factory
2. Broken clutch spring 2. Replace spring
2. Connectors not plugged in 2. Open battery box and connect battery connectors
4. Clean, replace or gap spark plug
6. Push fuel line down into fuel in gas tank
end of season
pulling recoil handle
4. Clean, replace or gap spark plug
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Page 19
25
18
6
24
20
21
22
7
8
9
12
1
1
3
4
17
15
16
11
13
5
8
19
26
2
27
14
23
7
8
9
10
8
PARTS BREAKDOWN
MC43E HANDLEBAR PARTS EXPLOSION
Operator's Manual
MC43 Series Mini-Cultivator
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Page 20
MC43E HANDLEBAR PARTS LIST
Operator's Manual
MC43 Series Mini-Cultivator
KEY PART # DESCRIPTION QT Y.
1 300471 BOLT, M5 X 12MM 3
2 300523 GROUND WIRE 1
3 46139 KEY ONLY 1
4 46140 KEY SWITCH 1
5 46141 BOLT, HEX HD M8 X 1.25 X 160MM 2
6 4639 GRIP, HANDLEBAR 2
7 4640 NUT, THANDLE 4
8 4641 WASHER 8
9 4642 BOLT, HANDLE CLAMP 4
10 4655 NUT, HEX HD M8 X 1.25 2
11 4656 BATTERY BOX MC43E 1
12 4657 COVER, BATTERY BOX 1
13 4659 VOLTAGE RECTIFIER 1
14 4660 SOLENOID 1
15 4661 CHARGER PIGTAIL 1
16 4662 NUT, CHARGER PIGTAIL 1
17 4663 CAP, CHARGER PIGTAIL 1
KEY PART # DESCRIPTION QT Y.
18 4667 THROTTLE CABLE 1
19 4669 BOLT, M6 X 1MM X 12MM PAN HD 1
20 4689 HANDLEBAR, UPPER RIGHT 1
21 4690 HANDLEBAR, UPPER LEFT 1
22 4693 HANDLEBAR, MIDDLE 1
23 4695 HANDLEBAR, LOWER 1
24 4814 BOLT, PHILLIPS TRUSS HD ZN 1024 X
11/4
25 4819 TRIGGER ASSEMBLY, LONG THROW W/O
CABLE
26 53106 NUT, LOCK BI-WAY 1/4-20 2
27 6041612 BOLT, PTH ZN 1/4-20 X 1-1/2 2
46122 BATTERY 12V 7A (not shown) 1
4653 FUSE HOLDER (not shown) 1
4658 FUSE 10 AMP (not shown) 1
4675 BATTERY CONNECTOR SET, WHITE (not
shown)
4681 BATTERY CHARGER (not shown) 1
1
1
1
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Page 21
13
7
2
12
8
9
10
3
4
5
1
4
11
3
4
5
6
4
MC43 HANDLEBAR PARTS EXPLOSION
Operator's Manual
MC43 Series Mini-Cultivator
KEY PART # DESCRIPTION QT Y.
1 46141 BOLT, HEX HD M8 X 1.25 X 160MM 2
2 4639 GRIP, HANDLEBAR 2
3 4640 NUT, THANDLE 4
4 4641 WASHER 8
5 4642 BOLT, HANDLE CLAMP 4
6 4655 NUT, HEX HD M8 X 1.25 2
7 4667 THROTTLE CABLE 1
8 4689 HANDLEBAR, UPPER RIGHT 1
9 4690 HANDLEBAR, UPPER LEFT 1
10 4693 HANDLEBAR, MIDDLE 1
11 4695 HANDLEBAR, LOWER 1
12 4814 BOLT, PHILLIPS TRUSS HD ZN 1024 X 11/4 1
13 4819 TRIGGER ASSEMBLY, LONG THROW W/O CABLE 1
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Page 22
23
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17
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18
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7
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25
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26
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HOOD & TINES PARTS EXPLOSION
Operator's Manual
MC43 Series Mini-Cultivator
KEY PART # DESCRIPTION Q TY.
1 2431 WASHER, 10MM NARROW FLAT 2
2 4600 DRAG BAR 1
3 4601 TINE “A” RIGHT OUTSIDE 1
4 4602 TINE “C” LEFT INSIDE 1
5 4603 TINE “B” RIGHT INSIDE 1
6 4604 TINE “D” LEFT OUTSIDE 1
7 4606 WASHER, FIBER 2
8 46138 TRANSMISSION ASSEMBLY 1
9 46142 BOLT M6 X 1.0 X 15MM FLANGED HEX HD 2
10 46144 DUST CAP 2
11 46145 DETENT PIN 5/16 X 11/2” 1
12 46146 TINE SHIELD 2
13 4625 BOLT, M6 X 1.0 X 42MM FLANGED HEX HD 4
14 4629 NUT M10 X 1.5 CENTER LOCK HEX HD 1
KEY PART # DESCRIPTION Q TY.
15 4634 WHEEL 2
16 4650 NUT M6 X 1.0 FLANGED HEX HD 2
17 4652 HAIR PIN, 5/83/4 COTTER 2
18 4673 WHEEL HOLDER 1
19 4674 WHEEL TUBE 1
20 4678 GUIDE, WHEEL TUBE 1
21 4684 TUBE, WHEEL LOCK 1
22 4685 SPRING, WHEEL LOCK 1
23 4687 BOLT M10 X 1.5 X 225MM HEX HD 1
24 4691 BOLT, M4 X 0.7 X 10MM PHILLIPS PAN HD 2
25 4692 WASHER, M4 FLAT 2
26 4694 NUT M4 X 0.7 FLANGED HEX HD 2
E43CCMCV ENGINE 43CC CAT CONVERT 1
E43MCEVE ENGINE 43CC CAT CONVERT ELEC START 1
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Page 23
9
15
7
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1
17
8
22
6
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10
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11
13
5
25
21
20
23
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20
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24
TRANSMISSION PARTS EXPLOSION
Operator's Manual
MC43 Series Mini-Cultivator
KEY PART # DESCRIPTION QT Y.
1 300414 CLUTCH DRUM 1
4608 TINE SHAFT USE P/N 4651
4609 GEAR, TINE SHAFT USE P/N4651
4 4610 SHIM, TINE SHAFT 4
5 4613 WORM SPUD 1
6 46135 TRANSMISSION CASTING, RIGHT 1
7 46136 TRANSMISSION CASTING, LEFT 1
8 46137 DRIVE SHAFT 1
9 46138 TRANSMISSION ASSEMBLY 1
10 4614 BUSHING, DRIVE SHAFT 2
11 4615 THRUST BEARING ASSEMBLY 1
12 4616 SPACER, BUSHING 1
13 4617 REDUCER, THRUST BEARING 1
KEY PART # DESCRIPTION Q TY.
14 4618 WASHER, THRUST 2
15 4619 THRUST BEARING CAGE WASHER 1
16 4620 NUT, JAM M8 1
17 4623 BALL BEARING, 9MM 1
18 4633 ARM WHEEL/DRAG STAKE MOUNT 1
19 4645 BUSHING, TINE SHAFT 2
20 4646 SEAL, TINE SHAFT 2
21 4647 BOLT, FLG HEX HD M6 X 1.0 X 18MM 4
22 4648 BOLT, FLG HEX HD M6 X 1.0 X 22MM 2
23 4649 BOLT, FLG HEX HD M6 X 1.0 X 24MM 2
24 4650 NUT, FLANGED HEX HD M6 2
25 4651 TINE GEAR & SHAFT ASSEMBLY 1
Check for parts online at www.getearthquake.com or call 800-345-6007 M-F 8-5 23
Page 24
ENGINE PARTS EXPLOSION
44
Operator's Manual
MC43 Series Mini-Cultivator
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27
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60 (2)
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13
14
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47
3
12
39
38
10
9
37
41
54
59(2)
58(2)
57
48
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Page 25
Operator's Manual
MC43 Series Mini-Cultivator
ENGINE PARTS LIST
KEY
NO. PART NO. DESCRIPTION Q TY.
1 300484 FLYWHEEL, MAGNETO 1
2 300337 NUT, FLANGE M8 1
3 300462 WASHER, ROTOR 2
4 300413 CLUTCH ROTOR ASSEMBLY W/SPRING 1
5 300449 WASHER, SPRING 2
6 300450 BOLT, SHOULDER 2
7 300467 PIN, LOCATING 2
8 300487 MOUNT RING & SHROUD 1
9 300491 RECOIL CLUTCH 1
10 300429 PLATE, RECOIL 1
11 3004121 HANDLE, RECOIL STANDARD 1
12 300430 RECOIL ASSEMBLY WITH STANDARD
HANDLE
13 300472 IGNITION COIL, MC43 1
300472CE IGNITION COIL, MC43 CE 1
300191 IGNITION COIL, MC43E 1
300191CE IGNITION COIL, MC43E CE 1
14 300482 SHROUD, ENGINE 1
15 300493 BOLT, STUD M6 X 62MM 2
16 300475 GASKET, MUFFLER 1
17 4813 MUFFLER 1
18 4812 COVER, MUFFLER 1
19 BM6A SPARK PLUG 1
20 300483 COVER, ENGINE SHROUD 1
21 300476 GASKET, INTAKE 1
22 300478 WINDPIPE, INTAKE 43CC/51CC 1
23 300479 GASKET, CARBURETOR 1
24 300486 CARBURETOR 1
25 300481 ORING, CARBURETOR 1
26 3004109 PRIMER BULB 1
27 3004158 COVER, AIR FILTER 1
28 3004150* AIR FILTER ASSEMBLY 1
29 3004156 FOAM, AIR FILTER 1
30 3004157 PLATE, REINFORCEMENT 1
KEY
NO. PART NO. DESCRIPTION QT Y.
31* 3004150 AIR FILTER ASSEMBLY 1
32* 3004150 AIR FILTER ASSEMBLY 2
33* 3004150 AIR FILTER ASSEMBLY 1
34* 3004150 AIR FILTER ASSEMBLY 1
35* 3004150 AIR FILTER ASSEMBLY 1
36 56105 BRACKET, GAS TANK 1
(a)
3004118 GAS TANK KIT 1
37
38 300401 GAS CAP, MANUAL VENTING 1
39 300332 SHROUD, GAS TANK 1
40 1021 SWITCH, ROCKER 1
-- 1021CE ON/OFF SWITCH WIRE ASSEMBLY REMOTE
1
HANDLEBAR (Not Shown-For CE Models Only)
(b)
3004105 KIT FUEL LINE TWO HOLE GROMMET 1
41
1
(b)
3004105 KIT FUEL LINE TWO HOLE GROMMET 1
42
(b)
3004105 KIT FUEL LINE TWO HOLE GROMMET 1
43
44 300335 BOLT W/WASHER PHILLIPS HH 4
45 300492 NUT, FLANGE M6 2
46 300471 BOLT W/WASHER M5 X 12MM 4
47 300439 BOLT W/WASHER PH M5 X 18MM 7
48 300336 BOLT HH M6 X 10MM 2
49 300438 BOLT W/WASHER M5 X 25MM 2
50 300456 BOLT M5 X 50MM 2
51 300338 KEY, FLYWHEEL 1
52 3004103 FILTER, FUEL 1
53 300351 BOLT HH M6 X 8MM 2
61 300326 GUARD
- 3004114 KIT, CARBURETOR 1
-- KITTU101 KIT, TUNE UP 1
MC43E ELECTRIC START MODEL ONLY
54 300525 STUD BOLT M6 X 41MM 1
55 300339 KEY, ELECTRIC STARTER 1
56 300527 STARTER WIRE 1
57 300529 STARTER MOTOR KIT (includes starter,
1
stud bolt, clutch drum & ground wire)
58 300445 WASHER M5 2
59 300438 BOLT W/WASHER M5 X 25MM 2
60 300439 BOLT W/WASHER PH M5 X 18MM 2
*Air lter assembly includes: air lter base (28), choke lever bolt (31),
two choke lever washers (32), nylock choke lever nut (33), choke lever
(34) and choke paddle (35)
(a) Gas tank kit includes: gas tank (37), gas cap (38), two-hole grommet (41), fuel line and fuel lter (43, 52).
(b) These parts are available as part of fuel line repair kit. Fuel line
repair kits includes: two-hole grommet (41), fuel line hose (42), primer
line hose (43) and fuel lter (52)
Check for parts online at www.getearthquake.com or call 800-345-6007 M-F 8-5 25
Page 26
MC43 Series Mini-Cultivator
EK43 BORDEREDGER KIT INSTALLATION OPTIONAL ACCESSORY
The Border-Edger Kit is a useful tool for making clean cuts in
the lawn along the borders of gardens, ower beds, walkways,
and driveways for a well manicured look. To install the BorderEdger Kit, do the following:
1. Disconnect spark plug wire from spark plug.
2. Remove the cotter pins from both sides of the tine shaft.
3. Remove the cultivating tines from the shaft, remembering
which direction they are facing.
4. Put the tines in a safe place and save the (2) cotter pins, they
will be used on the Border-Edger Kit.
5. Slide the Border-Edger attachment on either side of the
tine shaft. Make sure that the hub collar of the border edger
tine faces outward, away from the transmission of the minicultivator.
6. Put (1) cotter pin, at side facing edger attachment, through
the shaft hole that is further down the shaft from the hole
where the cultivating tines were placed.
7. Slide the wheel on the opposite tine shaft.
8. Insert the remaining cotter pin, at side facing wheel, through
the hole next to the wheel at the end of the tine shaft.
9. Re-connect spark plug wire.
10. Before using the Border-Edger Kit, remove the drag stake from
the unit.
11. Set the mini-cultivator wheels to their highest (top) position.
EK43 Border-Edger Attachment Kit (ts both Models MC43 & MC43E)
CAUTION
BE AWARE THAT THE MINICULTIVATOR COULD UNEX
PECTEDLY BOUNCE UPWARD, OR JUMP FORWARD IF
THE TINES STRIKE CONCRETE, PAVEMENT, OR OTHER
HARD SURFACES OR HARD OBSTACLES BURIED UN
DER GROUND.
46134
cotter pin
46131
wheel
Operator's Manual
46130
border-edger tine
46134
cotter pin
4651
tine shaft
Revised 4.16.08
Check for parts online at www.getearthquake.com or call 800-345-6007 M-F 8-526
Page 27
Operator's Manual
46145
Detent Pin
Nuts/Bolts (4 each)
4650/46142
4676
Plate Wheel Extension
Slide Shield Forward
4708
Right Side
Dethatcher
Assembly
4707
Left Side
Dethatcher
Assembly
46134
Hairpin
4691
Bolt
4694
Nut
4692
Washer
46134
4651
Tine Shaft
MC43 Series Mini-Cultivator
DK43 DETHATCHER KIT INSTALLATION OPTIONAL ACCESSORY
The Dethatcher Kit is very eective for lifting away the excessive matted layers of thatch that can prevent moisture, oxygen and
nutrients from penetrating the soil and can harbor disease and insects. Use in Spring, Summer, and Fall to bring life and color back
to your lawn.
1. Disconnect spark plug wire from spark plug. Remove the cultivating tines (if so equipped). Refer to exploded view below for
detailed assembly.
2. Slide the Left and Right Dethatcher Assemblies onto the tine shaft making sure the Right Assembly is installed on the right side
and Left Assembly is installed on the left side as dened from the user’s position.
3. Secure dethatcher assemblies using the hairpins (46134).
4. Slide dethatcher shield over the unit’s tine shield from the rear of the unit and secure using bolts (4694), washers (4692), and nuts (4694).
5. Secure the lower part of the dethatcher shield to the drag stake mount using the detent pin (46145). Re-connect spark plug wire.
6. Install wheel extension plate (4676) using additional bolts (46142) and nuts (4650).
NOTE: The drag stake should not be used when using the dethatcher kit.
46134
46134
hairpin
4708
right side
dethatcher
assembly
slide shield forward
4691
bolt
4692
washer
4651
4694
nut
tine shaft
DK43 Dethatcher Kit (ts both Models MC43 & MC43E or stand-alone as MD43)
4676
plate wheel extension
4707
left side
dethatcher
assembly
446145
detent pin
4650/46142
nuts/bolts (4 each)
Check for parts online at www.getearthquake.com or call 800-345-6007 M-F 8-5 27
Page 28
Operator's Manual
MC43 Series Mini-Cultivator
MC43E & MC43 MINICULTIVATOR
MD43 DETHATCHER
WARRANTY TERMS AND CONDITIONS
PRODUCT WARRANTY: 1YEAR LIMITED WARRANTY
Earthquake, a manufacturing company, warrants this EARTHQUAKE® MINICULTIVATOR OR MINI DETHATCHER to be free
from defects in the material or workmanship for a period of one year from the date of purchase. During the one-year warranty
of this product, Earthquake will, at their discretion, furnish parts and/or labor to correct any defect caused by faulty material or
workmanship. Any unit used in a commercial application is covered for a period of 90 days after purchase. This warranty applies
to the original owner with a proof of purchase and is not transferable. This guarantee is void unless the warranty card is properly
lled out and received by Earthquake within 30 days of purchase or go to www.GetEarthquake.com for online registration.
For replacement parts, phone 800-345-6007 or go online to www.GetEarthquake.com.
ENGINE WARRANTY: 2YEAR LIMITED WARRANTY
Earthquake, a manufacturing company warrants its Viper Engines under a two-year limited warranty to be free from defects
in materials and workmanship for the service life of the product not to exceed twenty four consecutive months from the date
of purchase for consumer applications. As an Earthquake Viper small engine owner, you are responsible for executing proper
maintenance listed in your Operating and Maintenance Instructions. The warranty period begins on the date of purchase by
the rst retail consumer or commercial end user, and continues for the period of time stated above.
*These warranties apply only to products which have not been subjected to negligent use, misuse, alteration, accident, unauthorized
parts, failure to use proper fuel and oil, or if repairs have been performed at non-authorized service centers. These warranties supersede
all other warranties either expressed or implied and all other obligations or liabilities on our part. Earthquake does not assume, and
does not authorize any other person to assume for us, any liability in connection with the sale of our products. To be at "No Charge,"
warranty work must be sent directly to Earthquake or one of our authorized service centers and performed by them. To obtain warranty
service and/or replacement instructions, contact our customer service department at 800-345-6007 Monday through Friday from 8
a.m. to 5 p.m. or visit www.getearthquake.com. If you choose to ship your product to Earthquake for warranty repair, you must rst
have prior approval from Earthquake by calling our customer service department at 800-345-6007 for a return material authorization
number (RMA#). Under these circumstances, all items must be shipped prepaid. Earthquake will at no charge, repair or replace, at
their discretion, any defective part which falls under the conditions stated above. Earthquake retains the right to change models,
specications and price without notice.
Check for parts online at www.getearthquake.com or call 800-345-6007 M-F 8-528
Page 29
Operator's Manual
MC43 Series Mini-Cultivator
EXPLANATION OF EMISSIONS CONTROL
WARRANTY PROVISIONS
Viper Engines are designed, built and equipped to meet all EPA requirements.
It warrants that it is free from defects in material and workmanship that
could cause failure to the warranted part; and that it is identical in all
material respects to the engine described in the manufacturer's application
for certication. When a warrantable condition exists, Viper will repair your
engine at no cost to you, including parts and labor. The engine emissions
label will indicate certification information. If the purchaser is in need of a
warrantable repair and is not within 100 miles distance from an Earthquake
authorized repair center, Earthquake will pay for shipping costs to and from
an authorized Earthquake repair center.
Listed below are the parts covered by the emissions control systems
warranty. Some parts listed below may require scheduled maintenance
and are warranted up to the rst scheduled replacement point for that
part. Coverage under this warranty includes only the parts listed below (the
emission and evaporation control systems) if so equipped:
• AirFilterAssembly(onlytotherstscheduledreplacementpoint)
• FuelFilter(onlytotherstscheduledreplacementpoint)
• Carburetor
• FuelLines,FuelLineFittingsandClamps
• FuelMeteringValve(ifequipped)
• EvaporativeSystem(ifequipped)
- Canister (if equipped)
- Canister lter (if equipped)
- Vapor hose (if equipped)
- Orice connector (if equipped)
-Fuel tank
-Fuel cap
-Primer bulb canister (if equipped)
• SparkPlugs
• MagnetoIgnitionSystem
• MuerAssembly
LIMITATIONS
The Emission Control Systems Warranty shall not cover any of the following:
a) Repair or replacement required because of misuse or neglect,
improper maintenance, repairs improperly performed or replacements
not conforming to Earthquake specifications that adversely affect
performance and/or durability and alterations or modications not
recommended or approved in writing by Earthquake.
b) Replacement of parts and other services and adjustments necessary for
required maintenance at or after the rst scheduled replacement point;
c) Consequential damages such as loss of time, inconvenience, loss of use
of the engine or equipment, etc.
d) Diagnosis and inspection fees that do not result in eligible warranty
service being performed; and
e) Any add-on or modied par t, or malfunction of authorized parts due to
the use of add-on or modied parts.
These items will be covered for a period of two years from the date of the
original purchase. Viper warrants that: the components are designed, built
and equipped so as to conform with all applicable regulations adopted
by the EPA; that they are free from defects in material and workmanship
that could cause failure to the engine or other; and that the components
used are identical in all material respects to the engine described in the
manufacturer's application for certication. The warranty period begins
on the date the engine is originally purchased.
MAINTENANCE AND REPAIR REQUIREMENTS
The owner is responsible for the proper use and maintenance of the
engine. Earthquake recommends that all receipts and records covering the
performance of regular maintenance be retained in case questions arise. If
the engine is resold during the warranty period, the maintenance records
should be transferred to each subsequent owner. Earthquake reserves
the right to deny warranty coverage if the engine has not been properly
maintained; however, Earthquake may not deny warranty repairs solely
because of the lack of repair maintenance or failure to keep maintenance
records.
Normal maintenance replacement or repair of emission control devices
and systems may be performed by any repair establishment or individuals;
however, warranty repairs must be performed by an Earthquake authorized
service center. Any replacement parts or service that is equivalent in
performance and durability may be used in non-warranty maintenance
or repairs, and shall not reduce the warranty obligations of the engine
manufacturer.
The warranty on emissions-related parts is as follows:
• Anywarrantedpartthatisnotscheduledforreplacementas required
maintenance in the owner's manual supplied, is warranted for the
warranty period stated above. If any such part fails during the period
of warranty coverage, that part will be repaired or replaced at no charge
to the owner. Any such part repaired or replaced under the warranty
will be warranted for the remaining warranty period.
• Anywarrantedpartthatisscheduledonlyforregularinspectioninthe
owner's manual supplied, is warranted for the warranty period. Any
such part repaired or replaced under warranty will be warranted for the
remaining warranty period.
• Any warranted part that is scheduled for replacementasrequired
maintenance in the owner's manual supplied, is warranted for the period
of time prior to the rst scheduled replacement point for that part. If
the part fails prior to the rst scheduled replacement, the part will be
repaired or replaced at no charge to the owner. Any such part repaired
or replaced under warranty will be warranted for the remainder of the
period prior to the rst scheduled replacement point for the part.
• AddonormodiedpartsthatarenotexemptedbytheAirResources
Board may not be used. The use of any nonexempted add on or modied
parts by the owner will be grounds for disallowing a warranty claim. The
manufacturer will not be liable to warrant failures of warranted parts
caused by the use of a nonexempted add on or modied part.
Check for parts online at www.getearthquake.com or call 800-345-6007 M-F 8-5 29
Page 30
Operator's Manual
MC43 Series Mini-Cultivator
Check for parts online at www.getearthquake.com or call 800-345-6007 M-F 8-530
Page 31
Operator's Manual
MC43 Series Mini-Cultivator
Check for parts online at www.getearthquake.com or call 800-345-6007 M-F 8-5 31
Page 32
Earthquake™, Division of Ardisam, Inc.
1160 8th Avenue, PO Box 666
Cumberland, WI 54829
800-345-6007 | Fax 715-822-2223
E-mail: info@ardisam.com
All weights, specications and features are approximate and are subject to change without notice. Due to continuous product
improvements, product images may not be exact. Items used for props not included. Some assembly may be required.
Check for parts online at www.getearthquake.com or call 800-345-6007 M-F 8-5
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