Earthquake MC440 4-Cycle Cultivator Owner’s Manual

Earthquake MC440 4-Cycle Cultivator

INTRODUCTION
Congratulations on your investment in quality. Thank you for purchasing a 4-cycle cultivator from Earthquake®. We have worked to ensure that this cultivator meets the highest standards for usability and durability. With proper care, your 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.

FEDERAL EMISSIONS INFORMATION
Earthquake warrants to the retail purchaser, that this small, off-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 AND SERVICE

Record the engine model number and serial number in the space provided for easy reference when ordering parts or requesting technical support. Excluding emissions-related warranty items, the warranty is valid only if the completed registration is received by Ardisam within 30 days of purchase. (SEE WARRANTY SECTION FOR MORE INFORMATION.) You can register your warranty online by visiting www.getearthquake.com, or by mailing it to: Ardisam, 1160 Eighth Avenue, Cumberland, WI 54829. 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 manual may contain information for several models. Read and keep this manual for future reference. This manual 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 MANUAL, the REPLACEMENT PARTS and the WARRANTIES. This information must be included to make sure state laws and other laws are followed. This manual should remain with the product even if it is resold.

WARNINGS AND SAFETY PRECAUTIONS

OWNER’S RESPONSIBILITY
Accurate assembly and safe and effective use of the machine is the owner’s responsibility.

• Read and follow all safety instructions.
• Carefully follow all assembly instructions.
• Maintain the machine according to directions and schedule included in this Earthquake operator’s manual.
• Ensure that anyone who uses the machine is familiar with all 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.

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.

Intended Use / Foreseeable Misuse

IMPORTANT : This is a motorized rotary cultivator that works the soil by means of rotating tines. It is pedestrian-controlled, but not self-propelled, with a gasoline-fueled internal combustion engine to power the tines. It shall not be used for any other purpose.

NOTICE: NOTICE INDICATES YOUR EQUIPMENT CAN BE DAMAGED IF THE SAFETY INSTRUCTIONS THAT FOLLOW THIS SIGNAL WORD ARE NOT OBEYED.
CAUTION: CAUTION INDICATES A HAZARD WHICH, IF NOT AVOIDED, COULD RESULT IN PERSONAL INJURY AND/OR PROPERTY DAMAGE.
WARNING: WARNING INDICATES A HAZARD WHICH, IF NOT AVOIDED, COULD RESULT IN DEATH OR SERIOUS INJURY AND/OR PROPERTY DAMAGE.
DANGER : DANGER INDICATES A HAZARD WHICH, IF NOT AVOIDED, WILL CERTAINLY RESULT IN DEATH OR SERIOUS INJURY AND/OR PROPERTY DAMAGE.
IMPORTANT: IMPORTANT INDICATES HELPFUL INFORMATION FOR PROPER ASSEMBLY, 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 REPRODUCTIVE HARM.
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.

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, automobiles, 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 flying 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 artificial light.
• Do not operate product when fatigued or under the influence of alcohol, drugs or other medication which can cause drowsiness or affect your ability to operate this machine safely.
• Never operate machine in wet grass. Always be sure of your footing; keep a firm hold on the handle and walk; never run.
• Watch for traffic when operating cultivator near, or when crossing roads.
• If the equipment should start to vibrate abnormally, stop the engine (motor), flip the ON/OFF switch to the OFF position. 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. Flip the ON/OFF switch to the OFF position.
• Regularly inspect the machine. Make sure parts are not bent, damaged or loose.
• Temperature of muffler and nearby areas may exceed 150° F (65° C). Allow muffler 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.

PRODUCT-SPECIFIC 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. Flip the ON/ OFF switch to the OFF position. 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 customer service for instruction.
• If an object becomes lodged in the tines, flip the ON/OFF switch to the OFF position, 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 efficient operation.
  DANGER: 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.

ENGINE SAFETY PRECAUTIONS
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 muffler pointed in the direction away from the operator.
• Never point the exhaust muffler 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 flammable and vapors are explosive.

• When storing extra fuel be sure that it is in an appropriate container and away from any fire hazards.

• Prevent fire 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).
  CAUTION: HOT GASES ARE A NORMAL BY-PRODUCT OF A FUNCTIONING INTERNAL COMBUSTION ENGINE. FOLLOW ALL SAFETY INSTRUCTIONS TO PREVENT BURNS AND FIRES.
  WARNING: 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 FLIP THE ON/ OFF SWITCH TO THE OFF POSITION.

• Always fill 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 fill tank near appliances with pilot lights, heaters, or other ignition sources. If the fuel has to be drained, this should be done outdoors. The drained fuel should be stored in a container specifically 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 filling.

• 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.

• Never smoke while refilling engine fuel tank.

• Do not store engine with fuel in fuel tank indoors. Fuel and fuel vapors are highly explosive.

• Never siphon fuel by mouth to drain fuel tank.

• Always have an adult fill the fuel tank and never allow children to fill the engine.

• Never allow an adult or anyone under the influence of drugs or alcohol to fill 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 muffler, muffler 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

• Never remove the muffler guard from the engine.
• Never touch the muffler guard because it is extremely hot and will cause severe burns.
• Never touch parts of the engine that become hot after operation.
• Always keep materials and debris away from muffler guard and other hot parts of the engine to avoid fires.

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 clear of all persons, especially small children and pets. Keep children under the watchful care of a responsible adult.
• Be alert and turn machine off 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 off and cool. Never make adjustments or repairs with the engine (motor) running. Flip the ON/OFF switch to the OFF position to prevent accidental starting.
• 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 specifically 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 fire 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.
• Inspect machine before storage. When not in use, flip the ON/OFF switch to the OFF position 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.

NOTICE

SAFETY DECALS
This 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 effectively. 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. Should a decal become unreadable because of being worn, faded, or otherwise damaged during the use of your cultivator, please use the part number information provided to order a replacement label. Customers can order by calling Earthquake customer service. 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, effective operation of your cultivator.

FEATURES

NOTE: If using an ethanol blended fuel, a fuel stabilizer, mixed to manufacturer specifications, is recommended

OIL TANK CAPACITY| 3.72 fl-oz
OIL TYPE| OIL VIPER 4 CYCLE (p/n 13235) 10W-30
SPARK PLUG| NGK CMR6A
SPARK PLUG GAP| 0.024 inch
TRANSMISSION| Bronze gear drive
GEAR RATIO| 32:1
TILLING WIDTH| 6 inch min. – 10 inch max.
TILLING DEPTH| 8 inch max.
TINE SPEED| 288 rpm max.
WHEEL SIZE| 7.0 inch dia. x 1.375 inch wide
WEIGHT OF UNIT| 33 lb
ASSEMBLED SIZE| 33.6 x 17.8 x 40.6 inch

UNPACKING AND ASSEMBLY

UNPACK CULTIVATOR

1. Carefully lift the cultivator out of the box, remove any packing material and cut any ties holding the handlebar pieces to the cultivator assembly.
2. Find parts packet. Parts packet contains:
   • 4 – T-Handle Nuts (4640)
   • 4 – Curved Washers (4641)
   • 4 – Saddle Bolts (4642)

ASSEMBLY

1. Stand the cultivator assembly upright with tines and wheels on a level surface. Wheels should be set in the lowest position (See page 12 for wheel adjustment instructions). DO NOT place the cultivator on a high surface where it can fall and cause property damage or personal injury.
2. Using two T-handle nuts, two saddle bolts, and two curved washers, attach the middle handlebar to the lower handlebar that is already connected to the cultivator assembly (SEE FIGURE 1). Make sure the pull cord is in the center of the middle handle bar when attaching. The middle handlebar can be installed in one of two positions, one high and one low. DO NOT overtighten the T-handle nuts.
3. Attach the upper right and left handlebars to the middle handlebar using the two remaining T-handle nuts, saddle bolts, and curved washers (SEE FIGURE 1). DO NOT overtighten the T-handle nuts.
4. The drag stake is shipped with point facing upwards. Before using, remove lock pin and turn the drag stake around so the point is directed in the downward position facing towards the tines. Re-insert lock pin. SEE FIGURE 2

OPERATION

PREPARING ENGINE FOR STARTING

GAS AND OIL

NOTE : Engine is shipped from factory without oil. You must add engine oil before starting engine. If engine is started without oil, engine may be damaged beyond repair and will not be covered by warranty.

Quality
To operate the engine, we recommend using VIPER brand 4-cycle oil (13235), included with each new cultivator, or an equivalent 10W-30 engine oil to ensure that the engine operates correctly throughout the life of the engine. Use straight unleaded premium gasoline, low/no ethanol blends recommended.

Checking and Adding Oil
Be sure the engine is located on a level surface before checking or refilling oil. Proper position for checking oil level or refilling oil is face down, with the gas tank of the cultivator down on a horizontal surface. SEE

FIGURE 3

NOTICE: ENGINE MUST BE TIPPED FORWARD WITH FUEL TANK DOWN WHEN CHECKING OIL LEVEL OR FILLING WITH OIL. FAILURE TO DO SO CAN RESULT IN OVERFILLING THE ENGINE WITH OIL WHICH WILL IMPAIR THE ENGINE’S PERFORMANCE. ONLY CHECK OIL AFTER LETTING MACHINE SIT FOR FIVE MINUTES.

1. Clean around oil fill area.
2. Unscrew dipstick and wipe clean with cloth.
3. Reinsert dipstick (must be fully threaded for accurate reading).
4. Unscrew and check dipstick. If no oil shows on the dipstick, refill so that the oil level appears between the low and high marks on the dipstick. SEE FIGURE 3
5. Change oil if contaminated.

Filling Fuel Tank

1. Shut-off engine and allow engine to completely cool before refilling the fuel tank.
2. Move to a well ventilated area, outdoors, away from flames and sparks.
3. Clean debris from area around the fuel cap.
4. Loosen fuel cap slowly. Prevent the cap from coming in contact with dirt or debris.
5. Carefully add fuel without spilling.
6. Do not fill fuel tank completely full, allow space for fuel to expand.
7. Immediately replace fuel cap and tighten. Wipe off spilled fuel and allow to dry before starting engine.
   DANGER: ENGINE IS SHIPPED FROM FACTORY WITHOUT OIL. YOU MUST ADD ENGINE OIL BEFORE STARTING ENGINE. IF ENGINE IS STARTED WITHOUT OIL, ENGINE MAY BE DAMAGED BEYOND REPAIR AND WILL NOT BE COVERED BY WARRANTY. NEVER STORE ENGINE WITH FUEL IN THE TANK INDOORS. FUEL AND FUEL VAPORS ARE HIGHLY FLAMMABLE. ONLY AN ADULT MUST ALWAYS HANDLE AND FILL THE ENGINE 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 OF EXCESS FUEL AND ALLOW TO DRY. REMOVE ENGINE FROM AREA TO AVOID SPARKS.

NOTICE: DO NOT SPRAY WATER ON OR NEAR THE ELECTRONICS OF THE CULTIVATOR AS THIS MAY RESULT IN DAMAGE TO THE ELECTRICAL COMPONENTS.

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 efficient operation.
2. Cultivate without placing excessive body weight on the unit. The cultivator operates most efficiently with the weight of the unit itself.
3. Never run engine indoors. Exhaust fumes are deadly.

STARTING AND STOPPING ENGINE

• Move the engine to a well ventilated area, outdoors, to prevent carbon monoxide poisoning.
• Move to an area away from flames or sparks, to avoid ignition of vapors if present.
• Remove all debris from air cleaner holes and gas cap to ensure proper air flow.
• If it is the first time starting the cultivator, make sure the included 4-cycle oil has been poured into the oil fill area.

COLD ENGINE START:
Starting engine for first time or after engine has cooled off or after running out of fuel.

1. Move choke lever to CHOKE position. SEE FIGURE 4
   NOTE : CHOKE position is defined by moving the choke lever as far to the right, towards gas tank, as possible.

2. Prime unit until primer hose is filled with gas.
   NOTE : When using the primer bulb, allow the bulb to return completely to its original position between pushes.

3. Push ON/OFF switch to the ON position.

4. Hold handle bar firmly. Grasp starter handle and pull out slowly until it pulls slightly harder. Without letting the starter handle retract, pull rope with a rapid full arm stroke. Let it return to its original position slowly. Repeat this step every time the starter rope is pulled until unit fires or runs.
   NOTE : If engine fails to start after 5-6 pulls, push primer 1 time and pull starter rope again.

5. After engine starts running, move choke lever to HALF CHOKE position until unit runs smoothly.
   NOTE : Half choke is defined when the choke lever is between CHOKE and RUN positions. SEE FIGURE 4

6. Move choke lever to RUN position and squeeze throttle to desired speed. SEE FIGURE 4
   NOTE : Run at full throttle when possible. Do not let unit idle for extended periods of time.

7. To stop engine, push ON/OFF switch to OFF position.

HOT/WARM ENGINE START:

1. Begin with Step 3 of Cold Engine Starting.
2. If engine does not fire, refer to Step 1 of Cold Engine Starting.

TO STOP ENGINE:
Push the ON/OFF switch to the OFF position.

DANGER
DO NOT ATTEMPT TO START ENGINE IN THE FOLLOWING WAYS:

• DO NOT USE STARTING FLUID.
• DO NOT SPRAY FLAMMABLE 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.

CAUTION

• MAKE SURE THE UNIT IS IN A STABLE POSITION BEFORE PULLING THE STARTER HANDLE.
• WHEN THE UNIT START TO FIRE OR RUN, RETURN BOTH HANDS TO THE HANDLEBAR POSITION TO MAINTAIN CONTROL AND STABILITY OF THE UNIT.
• IF ENGINE FAILS TO START AFTER FOLLOWING STARTING PROCEDURES, PLEASE CONTACT OUR CUSTOMER SERVICE DEPARTMENT AT 800-345-6007.
• STARTER ROPE CAN CAUSE AN UNANTICIPATED JERK TOWARD ENGINE. PLEASE FOLLOW INSTRUCTIONS TO AVOID INJURY.
• NEVER LEAVE ENGINE RUNNING WHILE UNATTENDED.
• TURN OFF AFTER EVERY USE.
• NEVER CARRY CULTIVATOR FROM ONE LOCATION 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.

ADJUSTING WHEELS AND DRAG STAKE
The wheels on the cultivator can be adjusted to one of three positions. The LOW wheel position is used for transporting the cultivator across a smooth level surface while the engine is not running. The HIGH and HIGHEST wheel positions are used when cultivating in soil and help stabilize the unit when cultivating at different depths. (SEE FIGURE 5)

To adjust wheels up or down (SEE FIGURES 6 AND 7):

1. Pull the locking metal sleeve against the spring, away from the vertical guide until it releases from one of the three notched positions 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 desired notch in the vertical guide.4 The drag stake is used to help regulate cultivating depth and control the 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.

To adjust the drag stake (SEE FIGURE 7):

1. Pull the lock pin out of the drag stake mount hole.
2. Position the drag stake so the pointed tip is directed downward.
3. Insert the lock pin into the hole that achieves desired depth.

TINE REMOVAL AND INSTALLATION

To Remove Tines (SEE FIGURE 8)

1. Remove the hairpins from each end of the tine shaft.
2. Slide the four tines off 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 MC440. 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 8
3. Insert the hairpins into the holes at each end of the tine shaft to lock the tines into place.
   NOTE : Tines can be reversed so the pointed tip of the tines are directed forward – for more aggressive digging. In this arrangement, tines are positioned left to right D, C, B, A as viewed from the user’s position

MAINTENANCE AND STORAGE

STEPS FOR WORKING ON EQUIPMENT

1. Flip the ON/OFF switch to the OFF position. SEE FIGURE 9
2. Replace or repair the part on the cultivator.
3. Check all parts that were repaired, or removed during repair, that they are secure and fit correctly.
   NOTE : All repair parts must come from the factory. Never replace parts that are not specifically designed for the cultivator.

CULTIVATOR MAINTENANCE

1. Keep all screws, nuts, and bolts tight.
2. 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
Refer to engine emission warranty included with your product for maintenance schedule.
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 difficult, or require special tools, are best handled by professionals and are normally performed by a technician or other qualified 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 warranty service.

WARNING
PRACTICE SAFETY AT ALL TIMES. ENGINE MUST BE TURNED OFF AND ALLOWED TO COOL BEFORE ATTEMPTING ANY MAINTENANCE OR REPAIR.

TO PREVENT ACCIDENTAL STARTING:

• ENGINE MUST BE TURNED OFF AND COOL BEFORE CHECK AND ADJUSTING ENGINE OR EQUIPMENT.
• TEMPERATURE OF MUFFLER AND NEARBY AREAS MAY EXCEED 150° F (65° C). AVOID THESE AREAS.
• CHECK CULTIVATOR 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.
• ONLY AN ADULT MUST DO MAINTENANCE AND REPAIR ON ENGINE AND CULTIVATOR.

NOTICE
PROPER POSITION FOR CHECKING OIL LEVEL OR REFILLING OIL IS FACE DOWN, WITH THE FUEL TANK OF THE CULTIVATOR DOWN ON A HORIZONTAL SURFACE. SEE FIGURE 3 ON PAGE 10. FAILURE TO MAINTAIN THIS POSITION CAN RESULT IN OVER FILLING THE ENGINE WITH OIL WHICH WILL IMPAIR THE ENGINE’S PERFORMANCE. ONLY CHECK OIL AFTER LETTING MACHINE SIT FOR FIVE MINUTES.

LUBRICATION
Choose engine oil that meets or surpasses the latest API service classification. For temperatures higher than 32º F, use 10W-30 motor oil. Use SAE 5W-30 if temperatures are below 32º F.

OIL MAINTENANCE
After the first five hours of operating a new Viper engine the oil should be replaced, and every 50 hours of operating time thereafter. The oil should be changed every 25 hours if used under severe conditions, such as in high temperatures or under heavy loads. Check oil periodically; do not overfill!

CHANGING OIL
Be sure the engine is not operating and is located on a level surface before checking or refilling oil. Engine should be warm for easy removal of oil.

STEPS FOR CHANGING OIL

1. Flip the ON/OFF switch to the OFF position
2. Unscrew oil drain screw and empty oil into suitable oil container. (SEE FIGURE 3 on PAGE 10) Dispose of oil properly.
3. Reinsert drain screw and remove oil dipstick.
4. Fill with appropriate oil to “FULL“ or top line of dipstick (SEE FIGURE 3 on page 10).
5. Reinsert dipstick or oil fill cap and tighten.

SPARK PLUG
The recommended spark plug is a NGK CMR6A. For maintenance and care of the spark plug go online to www. getearthquake.com for instructions or call Earthquake customer service.

CARBURETOR
Never tamper with factory setting of the carburetor.

COOLING FINS
Cooling fins, 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 filter daily in extremely dusty conditions.

Steps for Replacing and Cleaning Air Filter

1. Before removing the air filter cover, move the choke lever to the CHOKE position.
2. To remove air filter cover, unscrew the cover bolt with a screw driver and gently pop out the front latch tab. The cover then can be slid off the back latch tabs and away from the engine. SEE FIGURE 10
3. Remove the foam filter and fiber filter elements. Replace with a new fiber filter and a new oiled foam filter (SEE FIGURE 11), or clean the original foam and fiber filters with warm water and mild soap. Remember to thoroughly oil the foam filter with 30 or 40 weight motor oil and squeeze out any excess oil before reinstalling it. Make sure to press the foam filter evenly into place over the fiber filter to ensure that the foam is fully seated into its sealed position.
4. Replace the air filter cover by first connecting the back latch tabs then swinging the cover, making sure the foam filter block stays fully seated and in its proper position, and connect the front latch tab so that it is secured into place.
5. Screw the cover bolt back into place. Check that the cover is securely attached by pulling slightly on the cover. If the cover doesn’t move when pulled, it is secure.

DANGER: TO AVOID INJURY OR DEATH, NEVER SIPHON FUEL B MOUTH. NEVER STORE CULTIVATOR WITH FUEL IN THE FUEL TANK INSIDE AN ENCLOSED AREA OR BUILDING.
NOTICE: NEVER TWIST AIR FILTERS WHEN CLEANING. ALWAYS PRESS.

TRANSPORTING YOUR CULTIVATOR

1. After using the cultivator, and before transporting it in a truck bed, check that the gas cap is screwed on (clockwise) tightly. The gas cap will not leak during transporting if gas cap 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 the fuel into an approved red fuel container. DO NOT siphon by mouth.
4. Wipe away any spilled fuel from engine and cultivator. Allow to dry.
5. Run the engine to use up the fuel in the carburetor and fuel tank. Always run engine in a well ventilated area.
6. Fuel cap should be screwed down tightly before transporting your cultivator in a vehicle.

LONG-TERM STORAGE
If your cultivator will not be used for more than one month, prepare it for long-term storage.

Steps for Long-Term Storage

1. Mix an appropriate amount of fuel stabilizer to fresh gasoline, in the ratio recommended on the stabilizer packaging. Run the engine for five minutes to distribute the stabilizer mixture throughout the fuel system. This will prevent gum, varnish and corrosion build up in your fuel system during long-term storage for up to 12 months.
2. Remove all debris from cultivator tines and engine.
3. Store cultivator by placing it on a level surface, resting on the fuel tank and tine shield. SEE FIGURE 12

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 cultivator. Most repairs will be minor, and easily fixed 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 find 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 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@getearthquake.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 service parts.

TROUBLESHOOTING GUIDE

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| 4. Clean, replace or gap spark plug
5. Fuel line hose not positioned in bottom of fuel tank| 5. Push fuel line down into fuel in fuel tank
Engine runs rough, floods during operation| 1. Dirty air filter| 1. Clean or replace air filter
2. Choke partially engaged| 2. Turn off choke
3. Carburetor out of adjustment| 3. Call customer service
Engine is hard to start| 1. Stale fuel| 1. Drain old fuel and replace with fresh. Use fuel stabilizer at end of season
2. Spark plug wire loose| 2. Make sure spark wire is securely attached to spark plug
3. Dirty carburetor| 3. Clean carburetor, use fuel stabilizer, new gas can
Engine misses or lacks power| 1. Clogged fuel tank| 1. Remove and clean fuel tank
2. Clogged air filter| 2. Clean or replace air filter
3. Carburetor out of adjustment or bad| 3. Call customer service
4. Spark plug wet, faulty or improperly gapped| 4. Clean, replace or gap spark plug
Engine runs, then quits| 1. Gas cap not venting| 1. Clean or replace gas cap, check vent
2. Plugged fuel filter| 2. Clean or replace fuel filter
3. Carburetor out of adjustment or bad| 3. Call customer service
Engine revs too high| 1. Carburetor out of adjustment| 1. Call customer service
Tines turn at idle| 1. Idle speed too high| 1. Adjust idle speed lower
2. Broken clutch spring| 2. Replace clutch
Recoil hard to pull| 1. Oil in combustion chamber| 1. Remove spark plug and dry out chamber

ILLUSTRATED PARTS BREAKDOWN – Hood & Tines Parts Explosion & Parts List

KEY| PART #| DESCRIPTION| QTY.| | KEY| PART #| DESCRIPTION| QTY.
---|---|---|---|---|---|---|---|---
1| 23491| ENGINE 40CC 4-CYCLE| 1| 16| 4685| WHEEL LOCK SPRING| 1
2| 26013| TRANSMISSION ASSEMBLY| 1| 17| 4684| WHEEL LOCK TUBE| 1
3| 4641| CURVED WASHER M8| 4| 18| 4600| DRAG STAKE| 1
4| 46141| BOLT M8 X 1.25 X 160 MM| 2| 19| 18039| LOCK PIN 8 X 40 MM| 1
5| 4602| TINE C ASSEMBLY| 1| 20| 46142| BOLT M6 X 1.0 X 20 MM FLANGE| 2
6| 4604| TINE D ASSEMBLY| 1| 21| W1200117| WASHER M6 X 12 X 1 MM| 2
7| 4652| HAIRPIN 5/8 X 3/4 IN| 2| 22| 4650| NUT M6 X 1.0 NYLOCK| 2
8| 13189| WHEEL 180 X 38 MM GREY| 2| 23| 4674| WHEEL AXLE TUBE| 1
9| 2431| WASHER M10 X 20 X 2 MM| 2| 24| 4673| WHEEL HOLDER| 1
10| 13048| LOCK NUT M10 X 1.5 FLANGE| 1| 25| 12811| LOWER HANDLEBAR| 1
11| 4625| BOLT M6 X 1.0 X 42 MM FLANGE| 4| 26| 4687| BOLT M10 X 1.5 X 225 MM FLANGE| 1
12| 400020| LOCK NUT M5 X 0.8 MM FLANGE| 2| 27| 4678| WHEEL GUIDE TUBE| 1
13| 23441| TINE SHIELD WITH WARNING| 2| 28| 4601| TINE A ASSEMBLY| 1
14| 176| BOLT M5 X 0.8 X 10 MM FLANGE| 2| 29| 4603| TINE B ASSEMBLY| 1
15| 13230| WASHER 16 X 21 X 1 MM| 1| 30| 400023| NUT M8 X 1.25 NYLOCK| 2

ILLUSTRATED PARTS BREAKDOWN – Engine Parts Explosion

KEY| PART #| DESCRIPTION| QTY.| | KEY| PART #| DESCRIPTION| QTY.
---|---|---|---|---|---|---|---|---
1| 26205| BOLT M5 X 0.8 X 16 MM W/WASHER| 17| 23| 13342| RECOIL ASSEMBLY| 1
2| 13197| AIR FILTER COVER| 1| 24| 13393| OIL CAP WITH O-RING| 1
3| 26996| KIT AIR FILTER ELEMENTS| 1| 25| 13202| HEAT SHIELD MUFFLER| 1
4| 400020| LOCK NUT M5 X 0.8 MM FLANGE| 2| 26| 13391| MUFFLER KIT| 1
5| 13363| AIR FILTER KIT| 1| 27| 13181| BOLT M5 X 0.8 X 50 MM SOCKET| 2
6| 23271| HOSE CLAMP CRANKCASE| 2| 28| 13320| WASHER M6 X 10 X 1 MM| 1
7| 13394| BREATHER HOSES KIT| 1| 29| 19919| BOLT M6 X 1.0 X 10 SOCKET| 1
8| 13329| CARBURETOR KIT| 1| 30| 19236| GAS CAP SELF VENTING| 1
9| 13299| CARBURETOR GASKET| 1| 31| 13295| RUBBER GAS TANK HOLDER TOP| 1
10| 13390| CARBURETOR INSULATOR KIT| 1| 32| 13296| RUBBER GAS TANK HOLDER LEFT| 1
11| 13395| HOSE CLAMP VALVE COVER| 2| 33| 13297| RUBBER GAS TANK HOLDER RIGHT| 1
12| 13400| IGNITION COIL KIT| 1| 34| 13388| GAS TANK KIT| 1
13| 26866| BOLT M4 X 0.7 X 20 MM W/WASHER| 2| 35| 17992| FUEL FILTER ALUMINUM CORE| 1
14| 13243| SPARK PLUG NGK CMR6A| 1| 36| 13308| FUEL LINES KIT| 1
15| 26867| BOLT M5 X 0.8 X 12 MM W/WASHER| 3| 37| 13241| FLYWHEEL| 1
16| 18497| ENGINE SHROUD KIT| 1| 38| 300337| LOCK NUT M8 X 1.25 FLANGE| 1
17| 11043| SHROUD CAP SPARK PLUG ACCESS| 1| 39| 300462| WASHER 8.4 X 15.8 X 1.6 MM| 2
18| 11044| SCREW 3/16 X 1/2 IN PHILLIPS| 1| 40| 11235| CLUTCH KIT| 1
19| 22631| CLIP NUT 3/16 IN| 1| 41| 300449| WAVE WASHER 10 X 15 X 0.25 MM| 2
20| 13298| VALVE COVER KIT| 1| 42| 300450| BOLT M8 X 1.25 X 25MM SHOULDER| 2
21| 13324| GASKET VALVE COVER| 1| 43| 26868| MOUNT RING AND SHROUD| 1
22| 13244| RECOIL CLUTCH| 1|

ILLUSTRATED PARTS BREAKDOWN – Transmission Parts Explosion & Parts List

KEY| PART #| DESCRIPTION| QTY.| | KEY| PART #| DESCRIPTION| QTY.
---|---|---|---|---|---|---|---|---
1| 26013| TRANSMISSION ASSEMBLY| 1| 14| 4614| DRIVE SHAFT BUSHING BRONZE| 2
2| 46144| DUST CAP| 2| 15| 21953| DRIVE SHAFT| 1
3| 4606| FIBER WASHER| 2| 16| 4617| THRUST BEARING REDUCER| 1
4| 4646| TINE SHAFT SEAL| 2| 17| 4618| THRUST WASHER| 2
5| —| TRANSMISSION CASTING LEFT| 1| 18| 4619| THRUST BEARING CAGE| 1
6| 4650| NUT M6 NYLOCK| 2| 19| 4623| BALL BEARING 9 X 26 X 8 MM| 1
7| W1200117| WASHER M6 X 12 X 1 MM| 2| 20| 300414| CLUTCH DRUM| 1
8| 4633| WHEEL & DRAG STAKE MOUNT| 1| 21| 4620| JAM NUT M8| 1
9| 13600| BOLT M6 X 1.0 X 25 HEX FLANGE| 2| 22| —| TRANSMISSION CASTING RIGHT| 1
10| 25159| TINE SHAFT BUSHING STEEL| 2| 23| 26997| WASHER M6 X 12 X 1 MM CU| 2
11| 4610| TINE SHAFT SHIM| 2| 24| 4647| BOLT M6 X 1.0 X 18 HEX FLANGE| 6
12| 4651| GEAR AND TINE SHAFT ASSY| 1| 25| 13447| BOLT M6 X 1.0 X 8 PHILLIPS| 2
13| 4616| BUSHING SPACER| 1| 26| 4615| KIT THRUST BEARING SET| 1
| * PURCHASE TRANSMISSION ASSEMBLY 26013

ILLUSTRATED PARTS BREAKDOWN – Handlebar Parts Explosion & Parts List

15073 BORDER-EDGER KIT INSTALLATION (OPTIONAL ACCESSORY)

The Border-Edger Kit is a useful tool for making clean cuts in the lawn along the borders of gardens, flower beds, walkways, and driveways for a well manicured look. To install the Border- Edger Kit, do the following:

INSTALLATION

1. Make sure the cultivator is not running by turning the ON/ OFF switch to the OFF position.
2. Remove the hairpins from both sides of the tine shaft.
3. Remove the cultivating tines from the shaft.
4. Remove the drag stake and lock pin from the unit.
5. Store the tines and save the (2) hairpins; they will be used on the Border-Edger Kit.
6. Slide the border-edger tine onto 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 cultivator. SEE FIGURE 13
7. Take the (2) hairpins saved in Step 4 and insert them through the inner and outer holes in the tine shaft on each side of the border-edger tine to secure the tine blade in place on the shaft. SEE FIGURE 13
8. Slide the border-edger wheel onto the opposite side of the tine shaft as far as it will go.
9. Insert the remaining (1) hairpin, that came with the kit, through the inner hole to secure the wheel. SEE FIGURE 13
10. Set the cultivator wheels to the HIGHEST (top) position. SEE FIGURE 5 (PAGE 12)

PARTS BREAKDOWN

CAUTION: BE AWARE THAT THE CULTIVATOR COULD UNEXPECTEDLY BOUNCE UPWARD, OR JUMP FORWARD IF THE TINE STRIKES CONCRETE, PAVEMENT, OR OTHER HARD SURFACES OR HARD OBSTACLES BURIED UNDER GROUND.

DK43 DETHATCHER KIT INSTALLATION (OPTIONAL ACCESSORY)

The Dethatcher Kit is very effective 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. Turn the ON/OFF switch to the OFF position. Remove the cultivating tines or other working tools and the drag stake.
2. Unscrew mount bolts/nuts that connect the wheel bracket to the drag stake mount and set wheel bracket aside. SEE FIGURE 14
3. Slide dethatcher shield over the unit’s tine shield from the rear of the unit and secure using bolts and nuts. SEE FIGURES 14 & 15
4. Secure the lower part of the dethatcher shield to the drag stake mount using the lock pin. SEE FIGURE 14 & 15
5. Install wheel extension plate (4676) using additional bolts (46142) and nuts (4650). Make sure wheel extension is facing the correct direction. (The side, with the two holes flush to the edge, connects to the drag stake mount) SEE FIGURE 14
6. Attach the wheel extension to the drag stake mount with mount bolts and nuts from unit.
7. Attach the wheel bracket to the wheel extension with bolts and nuts included with the Dethatcher Kit.
8. 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 defined from the user’s position. SEE FIGURE 16
9. Secure dethatcher assemblies using the two hairpins (46134) from the Dethatcher Kit through the inner holes of the tine shaft. SEE FIGURE 16
   NOTE : The drag stake must NOT be used when using the dethatcher kit.

Earthquake®, Division of Ardisam, Inc.
1160 8th Avenue, PO Box 666
Cumberland, WI 54829
800-345-6007 | Fax 715-822-2223
E-mail/Courriel/Correo electrónico:
info@getearthquake.com

All weights, specifications 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.

References

• Earthquake | Groundbreaking Power Equipment – Earthquake Outdoor Power Equipment
• Earthquake | Groundbreaking Power Equipment – Earthquake Outdoor Power Equipment

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