Yard Machines 2- Cycle Gas Cultivator User Manual

Operator’s Manual

English

2-Cycle Gas

Cultivator

IMPORTANT: Read safety rules and instructions carefully before operating equipment.

PRINTED IN U.S.A.
PART NO. 769-00556	(1/03)

TABLE OF CONTENTS

Content . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Page

Rules for Safe Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 Know Your Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 Assembly Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7 Oil and Fuel Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10 Starting/Stopping Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Operating Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12 Maintenance and Repair Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13 Cleaning and Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19 Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22 Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Inside Back Cover

FINDING MODEL NUMBER

This Operator’s Manual is an important part of your new unit. It will help you assemble, prepare and maintain the unit for best performance. Please read and understand what it says.

Before you start assembling your new equipment, please locate the model plate on the unit and copy the information from it onto the space provided below. The information on the model plate is very important if you need help from our Customer Support Department or an authorized dealer.

•The model number is located on the engine. A sample model plate is shown and explained below. For future reference, please copy the model number and the serial number of the equipment in the space provided.

	MODEL :
S/N :	ITEM :

Copy the model and parent part number here:

Copy the serial number here:

CALLING CUSTOMER SUPPORT

If you have difficulty assembling this product or have any questions regarding the controls, operation or maintenance of this unit, please call the Customer Support Department.

Call 1- (800)-345-8746, or 1- (800)-668-1238 in Canada, to reach a Customer Support representative. Please have your unit’s model number and serial number ready when you call. You will be asked to enter the serial number in order to process your call. This information is explained above.

VISIT OUR WEB SITE

Visit our web site at www.yardmachines.com for more information about our quality Yard Machines products, customer service, parts, tips, literature and more.

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SPARK ARRESTOR

NOTE: For users on U.S. Forest Land and in the states of California, Maine, Oregon and Washington. All U.S. Forest Land and the state of California (Public Resources Codes 4442 and 4443), Oregon and Washington require, by law that certain internal combustion engines operated on forest brush and/or grass-covered areas be equipped with a spark arrestor, maintained in effective working order, or the engine be constructed, equipped and maintained for the prevention of fire. Check with your state or local authorities for regulations pertaining to these requirements. Failure to follow these requirements could subject you to liability or a fine. This unit is factory equipped with a spark arrestor. If it requires replacement, ask your LOCAL SERVICE DEALER to install the accessory part #182747 Spark

Arrestor.

CALIFORNIA PROPOSITION 65 WARNING

WARNING

THE ENGINE EXHAUST FROM THIS PRODUCT CONTAINS CHEMICALS KNOWN TO THE STATE OF CALIFORNIA TO CAUSE CANCER, BIRTH DEFECTS OR OTHER REPRODUCTIVE HARM.

WARNING!

Read the Operator’s Manual and follow all warnings and safety instructions. Failure to do so can result in serious injury to the operator and/or bystanders.

FOR QUESTIONS, CALL 1-800-345-8746 IN U.S. OR 1-800-668-1238 in CANADA

SECTION 1: IMPORTANT SAFE OPERATION PRACTICES

The purpose of safety symbols is to attract your attention to possible dangers. The safety symbols and their explanations deserve your careful attention and understanding. The safety warnings do not by themselves eliminate any danger. The instructions or warnings they give are not substitutes for proper accident prevention measures.

SAFETY ALERT SYMBOL: Indicates danger, warning, or caution. Attention is required in order to avoid serious personal injury. May be used in conjunction with other symbols or pictographs.

NOTE: Advises you of information or instructions vital to the operation or maintenance of the equipment.

DANGER: Failure to obey a safety warning will result in serious injury to yourself or to others. Always follow the safety precautions to reduce the risk of fire, electric shock and personal injury.

WARNING: Failure to obey a safety warning can result in injury to yourself and others. Always follow the safety precautions to reduce the risk of fire, electric shock and personal injury.

CAUTION: Failure to obey a safety warning may result in property damage or personal injury to yourself or to others. Always follow the safety precautions to reduce the risk of fire, electric shock and personal injury.

SECTION 1A:RULES FOR SAFE OPERATION

READ ALL INSTRUCTIONS

WARNING: When using the unit, you must follow the safety rules. For your own safety and that of bystanders, please read these instructions before operating the unit. Please keep the instructions for later use.

Before Operating

•Read the instructions carefully. Be familiar with the controls and proper use of the unit.

•Do not operate this unit when tired, ill or under the influence of alcohol, drugs or medication.

•Children under the age of 15 must not use the unit; teens may operate the unit with adult guidance.

•Inspect the unit before use. Replace damaged parts. Check for fuel leaks. Make sure all fasteners are in place and secure. Replace parts that are cracked, chipped or damaged in any way. Do not operate with loose or damaged parts.

•Clear the area to be cultivated before each use. Remove rocks, broken glass, nails, wire, string and other objects which may be thrown by the unit. Clear the area of children, bystanders and pets; keep them outside a 50-foot (15 m.) radius, at a minimum. Even then, they are still at risk from thrown objects. Encourage bystanders to wear eye protection. If you are approached, stop the unit immediately.

3

•Be aware of risk of injury to the head, hands and feet.

•Squeeze the throttle control and check that it returns automatically to the idle position. Make all adjustments or repairs before using the unit.

Safety Warnings for Gas Units

WARNING: Gasoline is highly flammable, and its vapors can explode if ignited. Take the following precautions:

•Store fuel only in containers specifically designed and approved for the storage of such materials.

•Always stop the engine and allow it to cool before filling the fuel tank. Never remove the fuel tank cap or add fuel when the engine is hot. Never operate the unit without the fuel cap securely in place. Loosen the fuel tank cap slowly to relieve any pressure in the tank.

•Add fuel in a clean, well-ventilated outdoor area where there are no sparks or flames. Remove the fuel cap slowly, and only after the engine stops. Do not smoke while fueling or mixing fuel. Wipe up any spilled fuel from the unit immediately.

•Avoid creating a source of ignition for spilled fuel. Do not start the engine until fuel vapors dissipate.

•Move the unit at least 30 feet (9.1 m) from the fueling source and site before starting the engine. Do not smoke. Keep sparks and open flames away from the area while adding fuel or operating the unit.

While Operating

•Never start or run the unit inside a closed room or building. Breathing exhaust fumes can be lethal. Operate this unit only in a well ventilated area outdoors.

•Wear safety glasses or goggles that are marked as meeting ANSI Z87.1 standards, and ear/hearing protection when operating this unit. Wear a face or dust mask if the operation is dusty.

•Wear heavy, long pants, boots, gloves and a long sleeve shirt. Do not wear, short pants, sandals or go barefoot.

•To reduce the risk of injury associated with objects pulled into rotating parts, do not wear loose clothing, jewelry, scarves, etc. Secure hair above shoulder level.

•Use the unit only in daylight or good artificial light.

•Keep outside surfaces free from oil and fuel.

•This unit has a clutch. The tines remain stationary when the engine is idling. If they do not, have the unit adjusted by an authorized service technician.

•Be sure the tines are not in contact with anything before starting the unit.

•Avoid accidental starting. Be in the starting position whenever pulling the starter rope. The operator and unit must be in a stable position while starting. Refer to the Starting/ Stopping Instructions.

•Use the right tool. Only use this tool for the purpose intended.

•Do not force the unit. It will do the job more effectively, with a smaller chance of injury, if you use the unit for the task it was designed.

•Use extreme caution when reversing or pulling the unit towards you.

•Do not overreach. Take extra care when working on steep slopes or inclines. Always keep proper footing and balance.

•Always hold the unit with both hands when operating. Keep a firm grip on the handlebar grips.

•Keep hands, face and feet at a distance from all moving parts. Do not touch or try to stop the tines when they are rotating. Do not operate without guards in place.

•Do not touch the engine, muffler or gearbox. These parts get extremely hot from operation. When turned off they remain hot for a short time.

•Do not operate the engine faster than the speed needed to do the job. Do not run the engine at high speed when not in use.

•Always stop the engine during suspended or delayed operation, or when you walk from one location to another.

•Stop the engine for maintenance, repair or to install or remove the tines. To avoid injury, stop the unit and make sure the tines no longer turn.

•The tines become very sharp from use. Always wear heavy gloves when handling, removing, installing or cleaning the tines.

•Use only Genuine Factory Parts™ replacement parts and accessories for this unit. These are available from your authorized service dealer. Use of any non original factory parts or accessories could lead to serious injury to the user, or damage to the unit, and void your warranty.

•Keep the unit clean of vegetation and other materials. They may become lodged between the tines and gearbox or guard.

•To reduce the risk of fire, replace a faulty muffler and spark arrestor. Keep the engine and muffler free from grass, leaves, excessive grease or carbon build up.

Other Safety Warnings

•Never store the unit, with fuel in the tank, inside a building where fumes may reach an open flame or spark.

•Allow the engine to cool before storing or transporting. Be sure to secure the unit while transporting.

•Store the unit in a dry place, either locked up or up high to prevent unauthorized use or damage. Keep out of the reach of children.

•Clean the tines with a hose and water. Wipe the tines with a light machine oil to prevent rust.

•Never douse or squirt the engine with water or any other liquid. Keep handles dry, clean and free from debris. Clean after each use, as described in the Cleaning and Storage section.

•Keep these instructions. Refer to them often and use them to instruct other users. If you loan someone this unit, also loan them these instructions.

SAVE THESE INSTRUCTIONS

4

SECTION 1B:SAFETY & INTERNATIONAL SYMBOLS

This operator's manual describes safety and international symbols and pictographs that may appear on this product. Read the operator's manual for complete safety, assembly, operating and maintenance and repair information.

SYMBOL	MEANING	SYMBOL	MEANING
	• SAFETY ALERT SYMBOL		• ON/OFF STOP CONTROL
	Indicates danger, warning or caution.		ON / START / RUN
	May be used in conjunction with other

symbols or pictographs.

•WARNING - READ OPERATOR'S MANUAL

Read the operator’s manual(s) and follow all warnings and safety instructions. Failure to do so can result in serious injury to the operator and/or bystanders.

•WEAR EYE AND HEARING PROTECTION

WARNING: Thrown objects and loud noise can cause severe eye injury and hearing loss. Wear eye protection meeting ANSI Z87.1 standards and ear protection when operating this unit. Use a full face shield when needed.

• KEEP BYSTANDERS AWAY

WARNING: Keep all bystanders, especially children and pets, at least 50 feet (15 m) from the operating area.

• UNLEADED FUEL

Always use clean, fresh unleaded fuel.

• OIL

Refer to operator's manual for the proper type of oil.

•THROWN OBJECTS AND ROTATING CUTTER CAN CAUSE SEVERE INJURY

WARNING: Do not operate without the proper attachments and guards in place. Keep away from the rotating tines.

• ON/OFF STOP CONTROL

OFF or STOP

• HOT SURFACE WARNING

Do not touch a hot muffler, gear housing or cylinder. You may get burned. These parts get extremely hot from operation. They remain hot for a short time after the unit is turned off.

• CHOKE CONTROL

A • FULL choke position.

B • PARTIAL choke position.

C • RUN position.

•GARDEN CULTIVATORS – ROTATING TINES CAN CAUSE SEVERE INJURY

WARNING: Stop the engine and allow the tines to stop before installing or removing tines, or before cleaning or performing any maintenance. Keep hands and feet away from rotating tines.

5

SECTION 2: KNOW YOUR UNIT

Applications

•Cultivating sod and light to medium soil

•Cultivating

Handgrip

Throttle

Control

Throttle

Cable

Mounting

Bracket and

Clamp

Primer Bulb

Choke Control

Air Filter/

Muffler

Cover

Muffler

Spark

Plug

Wheel Bracket

Assembly

	START/ON (I)	On/Off Stop
		Control

STOP/OFF (O)

Starter Rope Grip

Shaft Tube Grip

Tine Guard

Gearbox

Tines

6

SECTION 3: ASSEMBLY INSTRUCTIONS

Your yard and garden cultivator has been completely assembled except for the handlebar, throttle cable and wheel bracket assembly. A large phillips

screwdriver is needed for assembly.

Removing Unit From Carton

1.Carefully unpack the contents and insure that nothing is damaged. Unwrap the throttle cable without bending or kinking it.

WARNING: Do not cut the plastic strap off the handle bar. The strap is under tension and can cause serious personal injury if cut.

2.Squeeze the handle bar and slide the plastic strap down and off. See Figure 1.

NOTE: Do not squeeze the handlebar too tight. Excessive squeezing can cause the handlebar to kink.

Squeeze

Together

Plastic

Strap

Figure 1

Setting Up Your Cultivator

Installing The Wheel Bracket Assembly

WARNING: To avoid injury from the tines, wear heavy gloves and a long sleeve shirt when installing the wheel bracket assembly.

1.With the unit on it’s side, place the wheel bracket assembly on the underside of the tine guard. See Figure 2.

2.Install a carriage bolt through each of the slotted holes in the wheel bracket and into the tine guard.

3.On the top side of the tine guard, install a lock washer and a wing nut onto each of the bolts. See Figure 2.

4.Make sure the square shoulder of the bolts are through the slotted holes in the wheel bracket. Tighten the wing nuts. See Figure 3.

NOTE: Do not over tighten the wing nuts. Loosening the wing nuts allows the wheel height to be adjusted.

Wheel

Bracket

Assembly

Tine

Guard

Wing Nut &

Lock Washer

Figure 2

Figure 3

7

SECTION 3: ASSEMBLY INSTRUCTIONS

Installing The Handlebar

1.Position the mounting brackets by rotating them until the foot on the bracket rests against the engine. See Figure 4.

2.Place the handlebar between the bottom and middle clamp pieces. See Figure 5.

3.While holding the three pieces together, position the handlebar underneath the shaft tube and align with the top clamp.

NOTE: The holes in the clamp assembly will line up only when assembled correctly.

4.One at a time, hold a hex nut in the bottom clamp recess with a finger and install a screw through the clamp assembly. Start screw with a large Phillips screwdriver. Repeat this process with the other three

(3) nuts and screws. Do not tighten until you make the handle adjustment.

5.Position the two (2) handlebar clamps near the top of the handlebar, with one clamp positioned on each side. Swing the handlebar up until it sets to the outside of the two mounting brackets on the engine. See Figure 6.

NOTE: Positioning the handlebar onto the mounting brackets may require you to slightly spread the handlebar.

6.Slide the two (2) handlebar clamps down over the mounting brackets. See Figure 7.

NOTE: It may be required to loosen or remove the thumb screws on the handlebar clamps to spread them to fit over the mounting brackets.

7.Center the handlebar and tighten the two (2) mounting bracket clamps and the four (4) handlebar clamp screws evenly until the handlebar is secure. See Figures 7 and 8.

Mounting Brackets

Foot

Foot

Figure 4

Screw (4)

Top

Clamp

Handlebar

Thumb

Screw

Spacer

Bottom

Clamp

Nut (4)

Middle

Clamp Handlebar

Figure 5

Mounting

Bracket

Figure 6

Handlebar Clamp

	Nut	Mounting
		Bracket
		Handlebar

Figure 7

Figure 8

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SECTION 3: ASSEMBLY INSTRUCTIONS

Throttle Cable Assembly

1.Wrap the throttle wire once around the handlebar. See Figure 9.

2.Depress the throttle trigger and locate hole for the throttle wire. See Figure 10.

3.With the throttle trigger depressed, place the barrel end of the throttle wire inside the hole of the trigger. See Figure 11.

4.Release the throttle trigger and guide the cable up into the slot of the trigger housing.

5.Push the throttle cable housing into the trigger housing until it snaps into place. See Figure 12.

6.Route the throttle cable through the clip on the right handlebar mounting bracket. See Figure 13.

NOTE: Ensure the throttle cable fits properly into the guide at the carburetor plate on the engine. If it does not, the throttle will not work properly. See Figure 9.

Carburetor

Plate Guide

Throttle Cable

Figure 9

Throttle Wire Hole

Figure 10

Throttle

Wire Slot

Figure 11

Figure 12

Throttle

Cable

Engine

Mounting

Bracket

Figure 13

9

SECTION 4: OIL AND FUEL INFORMATION

Oil and Fuel Mixing Instructions

Old and/or improperly mixed fuel is the main reason for improper unit performance. Be sure to use fresh, clean unleaded fuel. Follow the instructions carefully for the proper fuel/oil mixture.

Definition of Blended Fuels

Today's fuels are often a blend of gasoline and oxygenates such as ethanol, methanol, or MTBE (ether). Alcohol-blended fuel absorbs water. As little as 1% water in the fuel can make fuel and oil separate. It forms acids when stored. When using alcohol-blended fuel, use fresh fuel (less than 60 days old).

Using Blended Fuels

If you choose to use a blended fuel, or its use is unavoidable, follow recommended precautions:

•Always use fresh fuel mix per your operator's manual

•Always agitate the fuel mix before fueling the unit

•Drain the tank and run the engine dry before storing the unit

Using Fuel Additives

The bottle of 2-cycle oil that came with your unit contains a fuel additive which will help inhibit corrosion and minimize the formation of gum deposits. It is recommended that you use only our 2-cycle oil with this unit.

If unavailable, use a good 2-cycle oil designed for aircooled engines along with a fuel additive, such as STA-BIL® Gas Stabilizer or an equivalent. Add 0.8 oz. (23 ml.) of fuel additive per gallon of fuel according to the instructions on the container. NEVER add fuel additives directly to the unit's fuel tank.

CAUTION: For proper engine operation and maximum reliability, pay strict attention to the oil and fuel mixing instructions on the 2-cycle oil container. Using improperly mixed fuel can severely damage the engine.

Thoroughly mix the proper ratio of 2-cycle engine oil with unleaded gasoline in a separate fuel can. Use a 40:1 fuel/oil ratio. Do not mix them directly in the engine fuel tank. See the table below for specific gas and oil mixing ratios.

NOTE: One gallon (3.8 liters) of unleaded gasoline mixed with one 3.2 oz. (95 ml.) bottle of 2-cycle oil makes a 40:1 fuel/oil ratio.

+

UNLEADED GAS	2-CYCLE OIL
1 US. GALLON + 3.2 FL. OZ.
(3.8 LITERS)	(95 ml)

1 LITER + 25 ml

MIXING RATIO - 40:1

WARNING: Gasoline is extremely flammable. Ignited vapors may explode. Always stop the engine and allow it to cool before filling the fuel tank. Do not smoke while filling the tank. Keep sparks and open flames at a distance from the area.

WARNING: Remove fuel cap slowly to avoid injury from fuel spray. Never operate the unit without the fuel cap securely in place.

WARNING: Add fuel in a clean, wellventilated outdoor area. Wipe up any spilled fuel immediately. Avoid creating a source of ignition for spilled fuel. Do not start the engine until fuel vapors dissipate.

NOTE: Dispose of the old fuel/oil mix in accordance to Federal, State and Local regulations.

Filling The Fuel Tank

Fill or add fuel to the tank only when the cultivator is in a horizontal position. See figure 14.

Figure 14

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SECTION 5: STARTING/STOPPING INSTRUCTIONS

Starting Instructions

WARNING: Operate this unit only in a wellventilated outdoor area. Carbon monoxide exhaust fumes can be lethal in a confined area.

WARNING: Avoid accidental starting. Make sure you are in the starting position when pulling the starter rope. See Figure 17. To avoid serious injury, the operator and unit must be in a stable position while starting.

1.Mix gas with oil. Fill fuel tank with fuel/oil mixture. See Oil and Fuel Mixing Instructions.

2.Put the On/Off Stop Control in the ON (I) position. See Figure 15.

3.Fully press and release the primer bulb 10 times, slowly, until FUEL IS VISIBLE IN THE PRIMER BULB. See Figure 16. If you can’t see fuel in the bulb, press and release the bulb as many times as it takes before you can see fuel in it.

4.Place the choke lever in the FULL choke (A ) position. See Figure 16.

5.With the unit in the starting position (see Figure 17), squeeze the throttle control to the wide open (full

throttle) position. Pull the starter rope briskly 5 times while still in the FULL choke (A ) position. If the engine attempts to run before the fifth pull, proceed to step 6.

NOTE: The engine will not run in the FULL choke (A ) position.

6.Place the choke lever in the PARTIAL choke (B ) position. See Figure 16.

7.Pull starter rope 1 to 3 times, briskly, to start the engine. See Figure 17.

NOTE: Squeeze the throttle control until the engine has started and warmed up.

8. If the engine does not start, repeat steps 3 through 7.

NOTE: If the engine floods while trying to start, place the choke lever in the RUN (C ) position. See Figure 16. Squeeze the throttle control. Pull the starter rope briskly. The engine should start within three (3) to eight (8) pulls.

9.Squeeze the throttle control to warm up the engine

for 5 to 10 seconds. Place the choke lever in the RUN (C ) position. See Figure 16.

NOTE: Choking is unnecessary when starting a warm engine. Put the On/Off Stop Control in the ON position (Figure 15), and start in PARTIAL choke (B ) position (Figure 16). After starting, place the choke lever in the RUN (C ) position.

On/Off Stop

Control

START/ON (I)

		STOP/OFF (O)
		Figure 15
	Full Choke	Partial Position (B)	Run
			Position (C)
	Position (A)

Choke Control

Primer Bulb

Figure 16

Starter

Rope

Throttle

Control

Figure 17

Stopping Instructions

1.Release your hand from the throttle control. See Figure 17. Allow the engine to cool down by idling.

2.Put the On/Off Stop Control in the OFF (O) position. See Figure 15.

11

SECTION 6: OPERATING INSTRUCTIONS

Using Your Cultivator

Adjusting Tine Depth

WARNING: Dress properly to reduce the risk of injury when operating this unit. Do not wear loose clothing or jewelry. Wear eye and ear/hearing protection. Wear heavy, long pants, boots and gloves. Do not wear short pants, sandals or go barefoot.

1.Move the cultivator to the work area prior to starting the engine. The cultivator may be transported by pushing it on its wheels or carrying it by the shaft tube grip.

WARNING: To prevent serious personal injury, never pick-up or carry the unit while the engine is running.

2.Start the unit following the procedures outlined in the

Starting Instructions section.

3.With the engine running and the tines off the ground, depress the throttle control to increase the engine speed.

4.Holding both of the handlebar grips firmly, slowly lower the cultivator until the tines make contact with the ground. See Figure 18.

5.As cultivating action begins, pull back on the cultivator so that the tines can penetrate the ground.

6.Once the ground has been broken, continue at a moderate pace until you are familiar with the

WARNING: To prevent serious personal injury, use extreme caution when reversing or pulling the unit towards you.

Figure 18

controls and the handling of the cultivator.

7.Pull the cultivator backwards to improve the depth of cultivation and reduce your effort.

8.If the tines are digging too deep or not deep enough, adjust the tines as explained in Adjusting Tine Depth.

WARNING: To avoid serious personal injury, always turn the unit off and allow it to cool before you perform any adjustments.

Tine adjustment will vary depending on the type of soil being cultivated and how it will be used. Generally, adjusting the tines to break the soil 4 to 6 inches is recommended for most gardens. Adjust the tines as follows:

1.Stop the engine and disconnect the spark plug wire.

2.Loosen (do not remove) the two wing nuts on the tine guard. See Figure 19.

3.Slide the wheel bracket assembly down for shallower penetration, and up for deeper tine penetration.

4.Once the tines are in the desired position, tighten the wing nuts, making sure that the carriage bolts are seated properly through the bracket.

5.If the tine depth is incorrect, repeat steps 2 to 4.

6.Reconnect the spark plug wire and continue use.

Up

Down

Figure 19

Transporting the Unit

WARNING: To prevent serious personal injury, always stop the engine when operation is delayed or when transporting the unit from one location to another

1.Stop the engine.

2.Slide the wheel bracket assembly all the way down.

3.Tilt the unit back until the tines clear the ground.

4.Push or pull the unit to the next location.

12

SECTION 7: MAINTENANCE AND REPAIR INSTRUCTIONS

Maintenance Schedule

Perform these required maintenance procedures at the frequency stated in the table. These procedures should also be a part of any seasonal tune-up.

NOTE: Some maintenance procedures may require special tools or skills. If you are unsure about these procedures take your unit to any non-road engine repair establishment, individual or authorized service dealer.

WARNING: To prevent serious injury, never perform maintenance or repairs with unit running. Always service and repair a cool unit. Disconnect the spark plug wire to ensure that the unit cannot start.

NOTE: Maintenance, replacement, or repair of the emission control devices and system may be performed by any non-road engine repair establishment, individual or authorized service dealer.

In order to assure peak performance of your engine, inspection of the engine exhaust port may be necessary after 50 hours of operation. If you notice lost RPM, poor performance or general lack of acceleration, this service may be required. If you feel your engine is in need of this inspection, refer service to any non-road engine repair establishment, individual or authorized service dealer for repair. DO NOT attempt to perform this process yourself as engine damage may result from contaminants involved in the cleaning process for the port.

	FREQUENCY	MAINTENANCE REQUIRED	REFER TO
	Before starting engine	Fill fuel tank with fresh fuel mix	Page 10
	Every 10 hours	Clean and re-oil air filter	Page 14
	Every 25 hours	Check and clean spark arrestor	Page 15
		Check spark plug condition and gap	Page 16
	Every 50 hours	Inspect exhaust port and spark arrestor screen for clogging or	Page 15
		obstruction to assure maximum performance levels

Tine Removal and Replacement

Replace all four (4) tines at the same time, because they will wear evenly through normal use. Work on one side at a time.

WARNING: To prevent serious personal injury, always wear heavy gloves when handling the tines.

1.Put the On/Off Stop Control in the STOP (O) position and disconnect the spark plug wire.

2.Remove the clevis pin clips and clevis pins. See Figure 20.

3.Remove the tines and felt washers from the shaft.

4.Clean and oil the shaft.

5.The tines are stamped with the letter "R" or "L" to identified their position on each side of the gearbox when facing the front of the unit.

6.Replace the tines and felt washers onto the shaft with the hubs on the tines facing each other.

Clevis Pin

Felt

Washer

Tine Hubs

Clevis Pin Clip

Figure 20

7.Ensure the tips on tines are aligned in the same direction with each other before reinstalling the clevis pins and pin clips. See Figure 21.

8.Repeat this procedure on the opposite side.

NOTE: When installed correctly, there will be an "R" and "L" tine on both the gearbox and the tips of the tines. These letters will line up in the same direction for each side. It is important that the tines are installed correctly.

Align Tips

R

Shaft	L
	R

L

Figure 21

13

SECTION 7: MAINTENANCE AND REPAIR INSTRUCTIONS

Air Filter Maintenance

Removing the Air Filter/Muffler Cover

WARNING: To avoid serious personal injury, always turn your unit off and allow it to cool before you clean or service it.

1. Place the choke lever in the PARTIAL choke position (B).

NOTE: The choke lever must be in the PARTIAL choke position (B) to remove the air filter/ muffler cover. See Figure 22.

2.Remove the four (4) screws securing the air filter/ muffler cover. See Figure 22. Use a flat blade or T20 Torx bit screwdriver.

3.Pull the cover from the engine. Do not force.

Choke Lever

Partial Choke

Position (B)

Screws

Screws

Figure 22

Cleaning the Air Filter

WARNING: To avoid serious personal injury, always turn your unit off and allow it to cool before you clean it or perform any maintenance.

Clean and re-oil the air filter every 10 hours of operation. It is an important item to maintain. Failure to maintain the air filter will VOID the warranty.

1.Remove air filter/muffler cover. See Removing the Air Filter/Muffler Cover.

2.Turn cover over and look inside to locate the air filter. Remove the air filter from inside the air filter/muffler cover. See Figure 23.

3.Wash the filter in detergent and water. See Figure 24. Rinse the filter thoroughly. Squeeze out excess water. Allow it to dry completely.

4.Apply enough clean SAE 30 oil to lightly coat the filter. See Figure 25.

5.Squeeze the filter to spread and remove excess oil. See Figure 26.

Air Filter

Inside Muffler

Cover

Figure 23

Figure 24

Figure 25

Figure 26

6.Replace the air filter inside the air filter/muffler cover. See Figure 23.

NOTE: Operating the unit without the air filter and air filter/muffler cover assembly, will VOID the warranty.

Reinstalling the Air Filter/Muffler Cover

1.Place the air filter/muffler cover over the back of the carburetor and muffler. Align the screw holes.

NOTE: The choke lever must be in the PARTIAL choke position (B) to install the air filter/muffler cover. See Figure 22.

2.Insert the four (4) screws into the holes in the air filter/muffler cover and tighten. See Figure 22.

Do not over tighten.

14

SECTION 7: MAINTENANCE AND REPAIR INSTRUCTIONS

Spark Arrestor Maintenance

1.Remove air filter/muffler cover. See Removing the Air Filter/Muffler Cover.

2.Locate muffler front and the two (2) bolts securing it to the engine. See Figure 27. Remove the two (2) bolts using a flatblade screwdriver or 5/16-inch socket or nut driver. Pull muffler off of the engine.

3.Turn muffler over to the back side and locate the exhaust gasket. Remove the muffler gasket from the muffler. See Figure 27.

NOTE: If the exhaust gasket is torn or damaged, replace it with a new gasket before reassembling muffler.

4.Using a small flatblade screwdriver, carefully pry up the spark arrestor from the recessed hole. See Figure 28. Remove the spark arrestor from the muffler.

5.Clean the spark arrestor with a wire brush. Replace it if it is damaged or if it is impossible to clean thoroughly. See Figure 28.

6.Reinstall the spark arrestor by pressing it into the recessed hole on the muffler's back side. Make sure it fits tightly against the muffler and is not raised up.

7.Place the exhaust gasket against muffler's back side. Align the gasket bolt holes with the bolt holes in the muffler. While holding exhaust gasket in place, insert the bolts into the muffler's front side. See Figure 27.

8.Place the muffler (with the exhaust gasket in place and bolts inserted), against the engine, aligning the bolt holes. Tighten the bolts to secure the muffler to the engine. If using a torque wrench torque to:

80-90 in.•lb. (9-10.2 N•m).

WARNING: If the muffler is not tightened securely, it could fall off causing damage to the unit and possible serious personal injury.

9. Reinstall the air filter/muffler cover.

Bolts	Spark	Exhaust
	Arrestor	Gasket

Muffler - Front Side	Muffler - Back Side
Figure 27
Spark
Arrestor	Flat blade
	Screwdriver

Spark Arrestor

Muffler - Back Side

Figure 28

15

SECTION 7: MAINTENANCE AND REPAIR INSTRUCTIONS

Carburetor Adjustment

The idle speed of the engine is adjustable through the air filter/muffler cover. See Figure 29.

NOTE: Careless adjustments can seriously damage your unit. An authorized service dealer should make carburetor adjustments.

Check Fuel Mixture

Old and/or improperly mixed fuel is usually the reason for improper unit performance. Drain and refill the tank with fresh, properly mixed fuel prior to making any adjustments. Refer to Oil and Fuel Information.

Clean Air Filter

The condition of the air filter is important to the operation of the unit. A dirty air filter will restrict air flow and change the air/fuel mixture. This is often mistaken for an out of adjustment carburetor. Check the condition of the air filter before adjusting the idle speed screw. Refer to Air Filter Maintenance.

Adjust Idle Speed

WARNING: The unit may still run during idle speed adjustments. Wear protective clothing and observe all safety instructions to prevent serious personal injury.

If after checking the fuel mixture and cleaning the air filter the engine still will not idle, adjust the idle speed screw as follows:

1.Start the engine and let it run for about 2-3 minutes at a high speed (full throttle) to warm up. Refer to the

Starting/Stopping Instructions.

NOTE: Ensure the tines are not in contact with the ground when adjusting the idle.

2.Release the throttle control and let the engine idle. If the engine stops, insert a small phillips or flat blade screwdriver into the hole in the muffler cover. See Figure 29. Turn the idle speed screw clockwise 1/8 of a turn at a time (as needed) until the engine idles smoothly.

NOTE: The tines should not rotate during engine idle.

3.If the tines rotate when the engine idles, turn the idle speed screw counterclockwise 1/8 of a turn at a time (as needed), to reduce idle speed.

Checking the fuel mixture, cleaning the air filter, and adjusting the idle speed screw should solve most engine problems. If not and all the following are true:

•The engine will not idle

•The engine hesitates or stalls on acceleration

•There is a loss of engine power

Have the carburetor adjusted by an authorized service dealer.

Idle Speed Adjuster

Figure 29

Replacing the Spark Plug

Use a Champion RDJ7Y spark plug (or equivalent). The correct air gap is 0.020 inch (0.5 mm). Remove the plug after every 25 hours of operation and check its condition.

1.Stop the engine and allow it to cool. Grasp the plug wire firmly and pull it from the spark plug.

2.Clean around the spark plug. Remove the spark plug from the cylinder head by turning a 5/8 in. socket counterclockwise.

3.Replace cracked, fouled or dirty spark plug. Set the air gap at 0.020 in. (0.5 mm) using a feeler gauge. See Figure 30.

CAUTION: Do not sand blast, scrape or clean electrodes. Grit in the engine could damage the cylinder.

4.Install a correctly-gapped spark plug in the cylinder head. Tighten by turning the 5/8 inch socket clockwise until snug.

If using a torque wrench torque to:

110-120 in.•lb. (12.3-13.5 N•m).

Do not over tighten.

0.020 in.

(0.5 mm)

Figure 30

16

SECTION 7: MAINTENANCE AND REPAIR INSTRUCTIONS

Cleaning

Moving the Unit

WARNING: To avoid serious personal injury, always turn your unit off and allow it to cool before you clean or service it.

Use a small brush to clean off the outside of the unit. Do not use strong detergents. Household cleaners that contain aromatic oils such as pine and lemon, and solvents such as kerosene, can damage plastic housing or handle. Wipe off any moisture with a soft cloth.

Storage

•Never store the unit with fuel in the tank where fumes may reach an open flame or spark.

•Allow the engine to cool before storing.

•Store the unit locked up to prevent unauthorized use or damage.

•Store the unit in a dry, well-ventilated area.

•Store the unit out of the reach of children.

Long Term Storage

If the unit will be stored for an extended time, use the following storage procedure:

1.Drain all fuel from the fuel tank into a container with the same 2-cycle fuel mixture. Do not use fuel that has been stored for more than 60 days. Dispose of the old fuel/oil mix in accordance to Federal, State, and Local regulations.

2.Start the engine and allow it to run until it stalls. This ensures that all fuel has been drained from the carburetor.

3.Allow the engine to cool. Remove the spark plug and put 1 oz. (30 ml) of any high quality motor oil or 2- cycle oil into the cylinder. Pull the starter rope slowly to distribute the oil. Reinstall the spark plug.

NOTE: Remove the spark plug and drain all of the oil from the cylinder before attempting to start the unit after storage.

4.Thoroughly clean the unit and inspect for any loose or damaged parts. Repair or replace damaged parts and tighten loose screws, nuts or bolts. The unit is ready for storage.

WARNING: To prevent serious personal injury, always stop the engine when operation is delayed or when transporting the unit from one location to another.

1.Stop the engine and allow it to cool.

2.Either carry the unit by the shaft tube grip or grasp the center of the handlebar to use it as a carrying handle. See Figure 31.

Shaft Tube

Grip

Figure 31

Accessories / Replacement Parts

2-Cycle Oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147543 Spark Plug . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 610311 Fuel Cap . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 180000 Tine (L) (Left Side Outer or Right Side Inner) . . . .182729 Tine (R) (Right Side Outer or Left Side Inner) . . . .182730 Clevis Pin with Clip . . . . . . . . . . . . . . . . . . . . . . .147473

For specific replacement parts, refer to the parts list located on the inside back cover of this manual.

Transporting

•Allow the engine to cool before transporting.

•Secure the unit while transporting.

•Drain fuel from unit.

•Tighten fuel cap before transporting.

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SECTION 8: TROUBLESHOOTING GUIDE

	Trouble	Possible Cause(s)	Corrective Action
	ENGINE WILL	• On/Off control in the STOP position	• Turn On/Off control to ON
	NOT START	• Empty fuel tank	• Fill fuel tank with properly-mixed fuel
		• Primer bulb wasn’t pressed enough	• Press primer bulb fully and slowly 10 times
		• Engine is flooded	• Use starting procedure with choke lever in the RUN
			position
		• Old or improperly mixed fuel	• Drain gas tank and add fresh fuel mixture
		• Fouled spark plug	• Replace or clean spark plug
		• Plugged spark arrestor	• Clean or replace the spark arrestor
	ENGINE WILL	• Air filter is plugged	• Replace or clean the air filter
	NOT IDLE	• Old or improperly mixed fuel	• Drain gas tank and add fresh fuel mixture
		• Improper carburetor adjustment	• Adjust according to the Carburetor Adjustment
			section
		• Throttle cable not seated in	• Install according to the Throttle Cable Assembly
		carburetor plate guide	section
	ENGINE WILL	• Old or improperly mixed fuel	• Drain gas tank and add fresh fuel mixture
	NOT	• Improper carburetor adjustment	• Take to an authorized service dealer for adjustment
	ACCELERATE
		• Cutting attachment bound with grass	• Stop the engine and clean the cutting attachment
		• Dirty air filter	• Clean or replace the air filter
		• Plugged spark arrestor	• Clean or replace spark arrestor
	ENGINE LACKS	• Old or improperly mixed fuel	• Drain gas tank and add fresh fuel mixture
	POWER OR	• Improper carburetor adjustment	• Take to an authorized service dealer for adjustment
	STALLS WHEN
		• Fouled spark plug	• Replace or clean spark plug
	CULTIVATING
		• Plugged spark arrestor	• Clean or replace the spark arrestor

If further assistance is required, contact your authorized service dealer

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SECTION 9: SPECIFICATIONS

Engine*

Engine Type...........................................................................................................................................	Air-Cooled, 2-Cycle
Displacement ..............................................................................................................................................................	31 cc
Idle Speed RPM .......................................................................................................................................	2,800 - 3,600 rpm
Operating RPM...................................................................................................................................................	7,700+ rpm
Clutch Type .........................................................................................................................................................	Centrifugal
Ignition Type..........................................................................................................................................................	Electronic
On/Off Stop Control .......................................................................................................................................	Toggle Switch
Spark Plug Gap ....................................................................................................................................	0.020 inch (0.5 mm)
Lubrication...................................................................................................................................................	Fuel/Oil Mixture
Fuel/Oil Ratio..................................................................................................................................................................	40:1
Carburetor.......................................................................................................................................	Diaphragm, All-Position
Starter...............................................................................................................................................................	Auto Rewind
Muffler .....................................................................................................................................................	Baffled with Guard
Throttle............................................................................................................................................................	Spring Return
Fuel Tank Capacity.................................................................................................................................	14 ounces (415 ml)

Drive Shaft and Cultivator*

Drive Shaft Tube ..................................................................................................................................................	Steel Tube
Throttle Control ........................................................................................................................................	Finger-Tip Trigger
Cultivating Path Width (Maximum) .......................................................................................................	9 inches (22.86 cm)
Cultivating Depth (Maximum) ...............................................................................................................	6 inches (15.24 cm)
Approximate Unit Weight (no fuel) .................................................................................................................	26 lb. (12 kg)

*All specifications are based on the latest product information available at the time of printing. We reserve the right to make changes at any time without notice.

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NOTES

20

EPA Emission Control Warranty Statement

Your Warranty Rights and Obligations

The Environmental Protection Agency and MTD LLC (MTD) are pleased to explain the emission control system warranty on your 2002 and later small off-road engine. New small off-road engines must be designed, built and equipped to meet stringent anti-smog standards. Yard Machines must warrant the emission control system on your small off-road engine for the periods of time listed below provided there has been no abuse, neglect or improper maintenance of your small off-road engine.

Your emission control system may include parts such as the carburetor or fuel-injected system, the ignition system, and catalytic converter. Also included may be hoses, belts, connectors and other emission-related assemblies.

Where a warrantable condition exists, Yard Machines will repair your small off-road engine at no cost to you including diagnosis, parts and labor.

The 2002 and later small off-road engines are warranted for two years. If any emission-related part on your engine is defective, the part will be repaired or replaced my Yard Machines.

Owners Warranty Responsibilities

•As the small off-road engine owner, you are responsible for the performance of the required maintenance listed in your operator’s manual. Yard Machines recommends that you retain all receipts covering maintenance on your small off-road engine, but Yard Machines cannot deny warranty solely for the lack of receipts or for your failure to ensure the performance of all scheduled maintenance.

•As the small off-road engine owner, you however should be aware that Yard Machines may deny you warranty coverage if your small off-road engine or a part has failed due to abuse, neglect, improper maintenance or unapproved modifications.

•You are responsible for presenting your small off-road engine to a Yard Machines Authorized Service Center as soon as a problem exists. The warranty repairs should be completed in a reasonable amount of time, not to exceed 30 days.

If you have any questions regarding your warranty rights and responsibilities, you should call 1-800-345-8746.

Manufacturer’s Warranty Coverage

•The warranty period begins on the date the engine or equipment is delivered to the retail purchaser.

•The manufacturer warrants to the initial owner and each subsequent purchaser, that the engine is free from defects in material and workmanship which cause the failure of a warranted part for a period of two years.

•Repair or replacement of warranted part will be performed at no charge to the owner at an Authorized Yard Machines Service Center. For the nearest location please contact Yard Machines at: 1-800-345-8746.

•Any warranted part which is not scheduled for replacement, as required maintenance or which is scheduled for only for regular inspection to the effect of “Repair or Replace as Necessary” is warranted for the warranty period. Any warranted part which is scheduled for replacement as required maintenance will be warranted for the period of time up to the first scheduled replacement point for that part.

•The owner will not be charged for diagnostic labor which leads to the determination that a warranted part is defective, if the diagnostic work is performed at an Authorized Yard Machines Service Center.

•The manufacturer is liable for damages to other engine components caused by the failure of a warranted part still under warranty.

•Failures caused by abuse, neglect or improper maintenance are not covered under warranty.

•The use of add-on or modified parts can be grounds for disallowing a warranty claim. The manufacturer is not liable to cover failures of warranted parts caused by the use of add-on or modified parts.

•In order to file a claim, go to your nearest Authorized Yard Machines Service Center. Warranty services or repairs will be provided at all Authorized Yard Machines Service Centers.

•Any manufacturer approved replacement part may be used in the performance of any warranty maintenance or repair of emission related parts and will be provided without charge to the owner. Any replacement part that is equivalent in performance or durability may be used in non-warranty maintenance or repair and will not reduce the warranty obligations of the manufacturer

•The following components are included in the emission related warranty of the engine, air filter, carburetor, primer, fuel lines, fuel pick up/ fuel filter, ignition module, spark plug and muffler.

21