Yard Machines Y2900EC Operator's Manual

Operator’s Manual

Electric Start Capable

2-Cycle Gasoline

Trimmer/Brushcutter

Y2900EC

SAVE THESE INSTRUCTIONS

For service call 1-800-800-7310 in the United States, or 1-800-668-1238 in Canada to obtain a list of authorized service

dealers near you. For more details about your unit, visit our website at www.mtdproducts.com or www.mtdproducts.ca.

DO NOT RETURN THE UNIT TO THE RETAILER. PROOF OF PURCHASE WILL BE REQUIRED FOR WARRANTY SERVICE.

Service on this unit both within and after the warranty period should be performed only by an authorized and approved service dealer.

All information, illustrations, and specifications in this manual 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.

WARNING: When using the unit, you must follow

the safety rules. Please read these instructions before operating the unit in order to ensure the safety of the operator and any bystanders. Please keep these instructions for later use.

SPARK ARRESTOR NOTE 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 Muffler Assembly, Part #753-06182.

CALIFORNIA PROPOSITION 65 WARNING

769-07436 P00 (11/11)

TABLE OF CONTENTS

Service Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1

Rules for Safe Operation . . . . . . . . . . . . . . . . . . . . . . . . . .2

Oil and Fuel Information . . . . . . . . . . . . . . . . . . . . . . . . . . .3

Assembly Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

Know Your Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

Starting/Stopping Instructions . . . . . . . . . . . . . . . . . . . . . .7

Operating Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

Maintenance and Repair Instructions . . . . . . . . . . . . . . . .9

Cleaning and Storage . . . . . . . . . . . . . . . . . . . . . . . . . . .13

Optional Accessory . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

Troubleshooting Chart . . . . . . . . . . . . . . . . . . . . . . . . . . .14

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

Warranty Information . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

WARNING

THE ENGINE EXHAUST FROM THIS PRODUCT CONTAINS

CHEMICALS KNOWN TO THE STATE OF CALIFORNIA TO

CAUSE CANCER, BIRTH DEFECTS OR OTHER

REPRODUCTIVE HARM.

READ ALL INSTRUCTIONS 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 cutting attachment parts that are cracked, chipped or damaged in any way. Make sure the cutting attachment is properly installed and securely fastened. Be sure that the cutting attachment shield is properly attached, and positioned as recommended. Failure to do so can result in personal injury to the operator and bystanders, as well as damage to the unit.

• Use only 0.105-inch (2.67 mm) diameter original equipment manufacturer replacement line. Never use metal-reinforced line, wire, chain or rope. These can break off and become dangerous projectiles.

• 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.

• Clear the area to be cut before each use. Remove rocks, broken glass, nails, wire, string and other objects which may be thrown or become entangled in the cutting attachment. 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.

SAFETY WARNINGS FOR GAS UNITS

• 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. Always loosen the fuel tank cap slowly to relieve any pressure in the tank before fueling. Do not smoke.

• Always mix and add fuel in a clean, well-ventilated outdoor area where there are no sparks or flames. Do not smoke.

• Never operate the unit without the fuel cap securely in place.

• Avoid creating a source of ignition for spilled fuel. Wipe up any spilled fuel from the unit immediately before starting the unit. Move the unit at least 30 feet (9.1 m) from the fueling source and site before starting the engine. Do not smoke.

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

WHILE OPERATING

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

• Wear safety glasses or goggles that meet ANSI Z87.1-1989 standards and are marked as such. Wear 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 loose clothing, jewelry, short pants, sandals or go barefoot. Secure hair above shoulder level.

• The cutting attachment shield must always be in place while operating the unit as a trimmer. Do not operate unit without both trimming lines extended, and the proper line installed. Do not extend the trimming line beyond the length of the shield.

• This unit has a clutch. The cutting attachment remains stationary when the engine is idling. If it does not, have the unit adjusted by an authorized service technician.

• Adjust the bull-horn handlebar to your size in order to provide the best grip.

• Be sure the cutting attachment is not in contact with anything before starting the unit.

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

• Avoid accidental starting. Be in the starting position whenever pulling the starter rope. Both 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 its intended purpose.

• Do not overreach. Always keep proper footing and balance.

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

• Keep hands, face, and feet at a distance from all moving parts. Do not touch or try to stop the cutting attachment when it rotates.

• Do not touch the engine, gear housing or muffler. These parts get extremely hot from operation, even after the unit is turned off.

• Do not operate the engine faster than the speed needed to cut, trim or edge. Do not run the engine at high speed when not cutting.

• Always stop the engine when cutting is delayed or when walking from one cutting location to another.

• If you strike or become entangled with a foreign object, stop the engine immediately and check for damage. Do not operate before repairing damage. Do not operate the unit with loose or damaged parts.

• Stop the unit, switch the engine to off, and disconnect the spark plug for maintenance or repair.

• Use only original equipment manufacturer 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 unit clean of vegetation and other materials. They may become lodged between the cutting attachment and shield

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

WHILE OPERATING WITH CUTTING BLADE

• Read and understand all safety warnings before operating this unit.

• Always use the shoulder harness when using the brush blade accessory.

• Keep the bull-horn handlebar between the operator and cutting attachment or blade at all times.

• NEVER cut when the cutting blade is 30 inches (76 cm) or more above the ground level.

• Blade thrust may occur when the spinning blade contacts an object that it does not immediately cut. Blade thrust can be violent enough to propel the unit and/or operator in any direction, possibly causing a loss of control. Blade thrust can occur without warning if the blade snags, stalls or binds. This is more likely to occur in areas where it is difficult to see the material being cut.

• For operation with the brush blade, do not cut anything thicker than 1/2 inch or a violent kickback could occur.

• Do not attempt to touch or stop the blade when it is rotating.

• A coasting blade can cause injury while it continues to spin after the engine is stopped or the throttle trigger is released. Maintain proper control until the blade has completely stopped rotating.

• Do not run the unit at high speed when not cutting.

• If you strike or become entangled with a foreign object, stop the engine immediately and check for damage. Have any damage repaired before attempting further operations. Do not operate unit with a bent, cracked or dull blade. Discard blades that are bent, warped, cracked or broken.

• Do not sharpen the cutting blade. Sharpening the blade can cause the blade tip to break off while in use. This can result in severe personal injury. Replace the blade.

• Do not use the cutting blade for edging or as an edger; severe personal injury to yourself or others may incur. Use the cutting blade only for the purpose as described in this manual.

• Stop the engine IMMEDIATELY if you feel excessive vibration. Vibration is a sign of trouble. Inspect thoroughly for loose nuts, bolts or damage before continuing. Repair or replace affected parts as necessary.

RULES FOR SAFE OPERATION

• IMPORTANT SAFETY INSTRUCTIONS •

WARNING: Gasoline is highly flammable, and its

vapors can explode if ignited. Take the following precautions:

SYMBOL MEANING

• ON/OFF STOP CONTROL

ON / START / RUN

• 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.

SAFETY AND 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.

• ON/OFF STOP CONTROL

OFF or STOP

SYMBOL MEANING.

• WEAR EYE AND HEARING PROTECTION WARNING: Thrown objects and loud noise can

cause severe eye injury and hearing loss. Wear eye protection meeting ANSI Z87.1-1989 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.

• THROWN OBJECTS AND ROTATING CUTTER CAN CAUSE SEVERE INJURY

WARNING: Do not operate without the cutting

attachment shield in place. Keep away from the rotating cutting attachment.

• 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.

• UNLEADED FUEL

Always use clean, fresh unleaded fuel

•OIL

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

• SHARP BLADE WARNING: Sharp blade on cutting attachment

shield. To prevent serious injury, do not touch the line cutting blade.

• CHOKE CONTROL

1. • FULL choke position

2. • PARTIAL choke position

3. • RUN choke position

AFTER USE

• Clean cutting blades with a household cleaner to remove any gum buildup. Oil the blade with machine oil to prevent rust.

• Lock up and store the cutting blade in an appropriate area to protect the blade from unauthorized use or damage.

OTHER SAFETY WARNINGS

• Never store a fueled unit 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 area, locked up or up high to prevent unauthorized use or damage, out of the reach of children.

• Never douse or squirt the unit with water or any other liquid. Keep handles dry, clean and free from debris. Clean after each use, see Cleaning and Storage instructions.

• 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

• BRUSHCUTTERS •REPLACE DULL BLADE

Do not sharpen the cutting blade. Sharpening the blade can cause the blade tip to break off while in use. This can result in severe personal injury.

• TRIMMER/ BRUSHCUTTER SAFETY WARNING: Thrown objects and rotating cutter

can cause severe injury. Keep bystanders, especially children and pets, at least 50 feet (15 m) away from the cutting area. The cutting attachment shield must be used when using the trimmer cutting attachment.

• PRIMER BULB

Push primer bulb, fully and slowly, 10 times.

OIL AND FUEL INFORMATION

OIL AND FUEL MIXING INSTRUCTIONS

Old and/or improperly mixed fuel are the main reasons for the unit not running properly. 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

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.

RULES FOR SAFE OPERATION

• SAFETY ALERT SYMBOL

Indicates danger, warning or caution. May be used in conjunction with other symbols or pictographs

FUELING THE UNIT

1. Turn unit on its side, with the fuel cap facing up, and remove the fuel cap.

2. Place the gas container’s spout into the fill hole on the fuel tank and fill the tank.

NOTE: Do not overfill the tank.

3. Wipe up any gasoline that may have spilled.

4. Reinstall the fuel cap.

5. Move the unit at least 30 ft. (9.1 m) from the fueling source and site before starting the engine.

fuel, use fresh fuel (less than 30 days old).

USING BLENDED FUELS

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

• Always use the fresh fuel mix explained in the 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 contains a fuel additive which will help inhibit corrosion and minimize the formation of gum deposits. It is recommended to use our 2-cycle oil with this unit.

If unavailable, use a good 2-cycle oil designed for air-cooled 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.

Thoroughly mix the proper ratio of 2-cycle engine oil with unleaded fuel 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 for specific gas and oil mixing ratios.

NOTE:

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

NOTE: Dispose of the old fuel/oil mix in accordance to Federal,

State and Local regulations.

NOTE: The holes in the top and

middle clamp will line up only when assembled correctly.

3. Place the clamps and the handlebar over the shaft housing and onto the bottom clamp.

4. Hold each hex nut in the bottom clamp recess with a finger. Start screws with a large Phillips screwdriver. Do not tighten until you make the handle adjustment.

5. While holding the unit in the operating position (Fig. 2), move the handlebar to the location that provides you the best grip.

6. Tighten the clamp screws evenly, until the handlebar is secure.

KNOW YOUR UNIT

OIL AND FUEL INFORMATION

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, well ventilated

outdoor area. Wipe up any spilled fuel immediately. Avoid creating a source of ignition for spilt fuel. Do not start the engine until fuel vapors dissipate.

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.

ASSEMBLY INSTRUCTIONS

INSTALL AND ADJUST THE HANDLEBAR

1. Place the bull-horn handle between the top and middle clamp pieces (Fig. 1).

2. While holding the three pieces together, install the four (4) screws through the top clamp and into middle clamp.

(4) Screws

Top

Clamp

Middle Clamp

Bottom

Clamp

Nuts

Fig. 1

Fig. 2

Cutting

Attachment

Shield

Throttle Control

Bull Horn

Handlebar

Cutting Attachment

Shaft

Grip

Shaft

Housing

Starter Rope Grip

Line

Cutting

Blade

Spark

Plug

Muffler

On/Off Stop Control

Primer

Bulb

Throttle Lock-Out

Fuel Cap

Cutting

Blade

MIXING RATIO - 40:1

UNLEADED GAS 2 CYCLE OIL

1 GALLON US

(3.8 LITERS)

3.2 FL. OZ. (95 ml)

1 LITER 25 ml

WARNING:

DO NOT USE E85 FUEL IN THIS

UNIT. It has been proven that fuel containing

greater than 10% ethanol will likely damage this engine and void the warranty.

ASSEMBLY TOOLS REQUIRED

• Large Phillips screwdriver

• Flathead Screwdriver

• 13 mm wrench

• Locking rod

3. Put the harness on over your head and onto your shoulder. Snap it on to the support fitting (Fig. 7).

4. Adjust the length to fit the operator’s size. Pull the tab to lengthen, pull the strap to shorten (Fig 8).

REMOVE AND INSTALL THE CUTTING SHIELD Remove the cutting attachment shield when using the unit

as a brushcutter

Remove the cutting attachment shield from the shield mount by removing the three (3) screws with a flat blade screwdriver (Fig. 9). Store parts for future use.

Install the cutting attachment shield when using the unit as a grass trimmer

Install the cutting attachment shield on the shield mount by inserting the three (3) screws into the shield mount. Tighten securely with a flat blade screwdriver (Fig. 9).

ASSEMBLY INSTRUCTIONS

OPERATING THE EZ-LINK™ SYSTEM

The EZ-Link™ system enables the use of these optional Add-Ons.

Trimmer..............................................................................AF720

Hedge Trimmer* ............................................................... AH720*

Brushcutter* ......................................................................BC720*

Cultivator.......................................................................... GC720

Edger* ............................................................................... LE720*

Pole Saw........................................................................... PS720

Straight Shaft Trimmer ..................................................... SS725

Turbo Blower .................................................................... TB720

* Do NOT use this Add-On with an electric powered unit. REMOVING THE ADD-ON

1. Turn the knob counterclockwise to loosen (Fig. 5).

2. Press and hold the release button (Fig. 3).

3. While firmly holding the upper shaft housing, pull the lower shaft housing straight out of the EZ-Link™ coupler (Fig. 4).

INSTALLING THE ADD-ON NOTE: To make installing or removing the add-on easier, place

the unit on the ground or on a work bench.

1. Turn knob counterclockwise to loosen (Fig. 5).

2. While firmly holding the add-on, push it straight into the EZLink™ coupler (Fig. 4).

NOTE: Aligning the

release button with the guide recess will help installation (Fig. 3).

3. Turn the knob clockwise to tighten (Fig. 5).

For decorative trimming/edging with the line cutting head, lock the release button into the 90° hole (Fig. 5).

Guide Recess

Fig. 3

Release

Button

EZ-Link™ Coupler

Upper Shaft

Housing

Fig. 4

Lower Shaft

Housing

Primary Hole

Knob

Fig. 5

90˚ Edging Hole

(Trimmer Only)

INSTALL THE HARNESS

1. Push the strap through the center of the buckle.

2. Pull the strap over the cross bar and down through the slot in the buckle (Fig. 6).

Support Fitting

Fig. 7

Fig. 8

WARNING: Always use the shoulder harness

when using the cutting blade to avoid serious personal injury.

WARNING: The cutting attachment shield should

NOT be installed when operating the unit with a blade. Remove the cutting attachment shield before removing or installing the blade.

WARNING: To avoid serious personal injury, the

cutting attachment shield MUST be in place at all times while operating the unit as a grass trimmer.

Fig. 6

(3) Screws

Cutting

Attachment

Shield

Shield Mount

Gear Housing

Fig. 9

REMOVE THE CUTTING ATTACHMENT AND INSTALL THE CUTTING BLADE

NOTE:

To make cutting blade removal and installation easier,

place the unit on the ground or on a work bench

Remove the Cutting Attachment Shield

See Remove and Install the Cutting Attachment Shield.

Remove the Cutting Attachment

Align the shaft bushing hole with the locking rod slot and insert the locking rod into the shaft bushing hole (Fig. 10).

2. Hold the locking rod in place by grasping it next to the boom of the unit (Fig. 11).

3. While holding the locking rod, remove the cutting attachment by turning it clockwise off of the output shaft (Fig. 12). Store the cutting attachment for future use.

NOTE: The blade retainer

under the cutting attachment will be used when installing the cutting blade.

Install the Cutting Blade

. Place the cutting blade on the output shaft bushing (Fig. 13).

5. Make sure that the cutting blade is centered on the pilot step and sitting flat against the output shaft bushing (Fig. 14).

6. Align the shaft bushing hole with the locking rod slot and insert the locking rod into the bushing hole (Fig. 10 ).

7. Put the blade retainer and nut on the output shaft. Make sure that the blade is installed correctly.

8. Tighten nut counterclockwise against the blade while holding the locking rod:

•

If using a torque wrench and an 13 mm socket, tighten to:

37 - 38 N•m, 325 - 335 in•lb, 27 - 28 ft.•lb.

• Without a torque wrench, use a

13 mm

closed-end or socket wrench, turning the nut until the blade retainer is snug against the shaft bushing. Make sure that the blade is installed correctly, then rotate the nut an additional 1/4 to 1/2 turn counterclockwise (Fig. 15).

9. Remove the locking rod from the locking rod slot.

Shield Mount

Locking Rod

Cutting

Blade

Blade Retainer

Nut

Output Shaft

Bushing

Pilot Hole

Fig. 13

WARNING: If the cutting blade is off-center, the

unit will vibrate and the blade may fly off, causing possible serious personal injury.

Pilot Step

Fig. 14

WARNING: To avoid serious personal injury,

always wear gloves while handling or installing the blade.

ASSEMBLY INSTRUCTIONS

WARNING: The gear housing gets hot with use.

It can result in injury to the operator. The housing remains hot for a short time even after the unit is turned off. Do not touch the gear housing until it has cooled.

Fig. 10

Shaft Bushing Hole

Locking Rod Slot

Output Shaft

Bushing

Locking Rod

Output

Shaft

Fig. 11

Cutting Attachment

Locking Rod

Slot

Locking Rod

Fig. 12

REMOVE THE CUTTING BLADE AND INSTALL THE CUTTING ATTACHMENT

Remove the Cutting Blade

1. Align the shaft bushing hole with the locking rod slot and insert the locking rod into the bushing hole (Fig. 10).

2. Hold the locking rod in place by grasping it next to the boom of the unit (Fig. 16).

3. While holding the locking rod, loosen the nut on the blade by turning it clockwise with a 13 mm closed-end or socket wrench (Fig. 16).

ASSEMBLY INSTRUCTIONS

WARNING:

Do not sharpen the cutting blade. Sharpening the blade can cause the blade tip to break off while in use. This can result in severe personal injury. Replace the blade.

1/4-1/2 turn

Counterclockwise

Fig. 15

Clockwise

Fig. 16

Cutting Attachment

Locking Rod

Blade Retainer

Output Shaft

Bushing

Fig. 17

WARNING: To avoid serious personal injury or

damage to the unit, do not start or operate this unit with the locking rod in the locking rod slot.

STARTING INSTRUCTIONS

1. Mix fuel with oil. See Oil and Fuel Mixing Instructions.

2. Fill the fuel tank with fresh, clean unleaded fuel. Refer to Fueling the Unit.

NOTE: There is no need to turn the unit on. The On/Off Control is

in the ON ( I ) position at all times (Fig. 18).

3. Fully press and release the primer bulb 10 times, slowly. Some amount of fuel should be visible in the primer bulb and fuel lines (Fig. 19). If fuel can not be seen in the bulb, press and release the bulb until fuel is visible.

4. Place the choke lever in Position 1 (Fig. 19).

5. Crouch in the starting position (Fig. 20). Squeeze the throttle control lever. Pull the starter rope 5 times.

6. Place the choke lever in Position 2 (Fig. 19)

7. Squeeze the throttle control, pull the starter rope in a controlled motion 3 to 5 times to start engine.

WARNING: Avoid accidental starting. Make sure

you are in the starting position when pulling the starter rope (Fig. 20).

To avoid serious injury, both the operator and unit must be in a stable position while starting.

WARNING:

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

STARTING / STOPPING INSTRUCTIONS

8. Keep the throttle squeezed and allow the engine to warm up for 30 to 60 seconds.

9. Continue squeezing the throttle control, move the choke lever to Position 3 (Fig. 19) and continue warming the engine for an additional 60 seconds. The unit may be used during this time.

NOTE: Unit is properly warmed up when engine accelerates

without hesitation.

IF... the engine hesitates, return the choke lever to Position 2

(Fig. 19) and continue warm-up.

IF... the engine does not start, go back to step 3. IF... the engine fails to start after a few attempts, place the

choke lever in Position 3 and squeeze the throttle control. Pull the starter rope out with a controlled and steady motion 3 to 8 times. The engine should start. If not, repeat.

IF WARM... If the engine is already warm, start the unit with the

choke lever in Position 2. After the unit starts, move the choke lever to Position 3.

STOPPING INSTRUCTIONS

1. Release the throttle control and allow the engine to cool down by idling.

2. Press and hold the On/Off Control switch in the OFF (O) position until the unit comes to a complete stop (Fig. 19).

4. Remove the nut, blade retainer and blade. Store the nut

and blade together for future use in a secure place. Store out of children’s reach.

Install the Cutting Attachment

Align the shaft bushing hole with the locking rod slot and insert the locking rod into the shaft bushing hole (Fig. 10). Place the blade retainer on the output shaft with the flat surface against the output shaft bushing as shown in Fig. 17. Screw the cutting attachment counterclockwise onto the output shaft. Tighten securely.

NOTE: The blade retainer must be installed on the output

shaft in the position shown for the cutting attachment to work correctly.

6. Remove the locking rod.

7. Install the cutting attachment shield. Refer to Remove and

Install the Cutting Attachment Shield.

Start/On (I)

Stop/Off (O)

Throttle

Lock-Out

Throttle

Control

Starter Rope

Throttle Control

(Squeezed)

Starting Position

STARTING / STOPPING INSTRUCTIONS

Fig. 18

Fig. 20

Primer Bulb

Choke Lever

Fig. 19

IF USING THE OPTIONAL ELECTRIC STARTER OR POWER START BIT™ ACCESSORY

HOW TO START THE UNIT USING THE ELECTRIC STARTER OR POWER START BIT ACCESSORY.

NOTE- This Unit Can Use an Electric Start or Power Start

Bit™ Optional Accessory!

Please refer to the Electric Starter or Power Start Bit operator’s manual for proper use of this feature. (Items Sold Separately! Please refer to page 15 of this manual about purchasing these accessories.)

STARTING INSTRUCTIONS

1. Mix fuel with oil. See Oil and Fuel Mixing Instructions.

2. Fill the fuel tank with fresh, clean fuel mix. Refer to Fueling the Unit.

NOTE: There is no need to turn the unit on. The On/Off Control

is in the ON ( I ) position at all times (Fig. 18).

3. Fully press and release the primer bulb 10 times, slowly. Some amount of fuel should be visible in the primer bulb (Fig.

19). If fuel cannot be seen in the bulb, press and release the bulb until fuel is visible.

4. Move the choke lever to Position 1 (Fig. 19).

5. Crouch in the starting position (Fig. 20). Place the electric starter or power start bit into the back of the unit. Refer to the Operation section of the Electric Starter or Power Start Bit operator’s manual.

6. Squeeze the throttle control lever. Press and hold the electric starter or drill ON (I) button for 2 seconds.

7. Move the choke lever to Position 2 (Fig. 19).

8. Squeeze the throttle control lever, press and hold the electric starter or drill ON (I) button for 2-second intervals until the unit starts.

9. Continue to squeeze the throttle control, remove the electric starter or drill from the unit and allow the engine to warm up for 30 to 60 seconds.

10. Continue squeezing the throttle control, move the choke lever to Position 3 (Fig. 19) and run the unit for an additional 60 seconds. The unit may be used during this time.

NOTE: Unit is properly warmed up when engine accelerates

without hesitation.

IF... the engine hesitates, return the choke lever to Position

2 (Fig. 19) and continue warm-up. IF... the engine does not start, go back to step 3. IF... the engine fails to start after a few attempts, place the

choke lever in Position 3 and squeeze the throttle

control. Press and hold the electric starter or drill ON (I)

button for 2-second intervals until the unit starts. IF WARM... If the engine is already warm, start the unit with the

blue choker lever in Position 2. After the unit starts,

move the blue choker lever to Position 3.

STOPPING INSTRUCTIONS

1. Release the throttle control and allow the engine to cool

down by idling.

2. Press and hold the On/Off Control switch in the OFF (O)

position until the unit comes to a complete stop (Fig. 18).

HOLDING THE TRIMMER

Before operating the unit, stand in the operating position (Fig. 21). Check for the following:

• The operator is wearing eye protection and proper clothing

• With a straight right arm, the operator’s right hand is holding the shaft grip

• The operator’s left arm is slightly-bent, the left hand holding the handle

• The unit is at waist level

• The cutting attachment is parallel to the ground and easily contacts the grass without the need to bend over

Once you are in the operating position, hook the shoulder strap to the unit.

ADJUSTING TRIMMING LINE LENGTH

The Bump Head™ cutting attachment allows you to release trimming line without stopping the engine. To release more line, lightly tap the cutting attachment on the ground (Fig. 22) while operating the trimmer at high speed.

NOTE: Always keep the trimming line fully extended. Line

release becomes more difficult as the cutting line becomes shorter.

Each time the head is bumped, about 25.4 mm (1 inch) of trimming line is released. A blade in the cutting attachment shield will cut the line to the proper length if excess line is released.

For best results, tap the Bump Head™ on bare ground or hard soil. If line release is attempted in tall grass, the engine may stall. Always keep the trimming line fully extended. Line release becomes more difficult as the cutting line becomes shorter.

NOTE: Do not rest the Bump Head™ on the ground

while the unit is running.

Some line breakage will occur from:

• Entanglement with foreign matter

• Normal line fatigue

• Attempting to cut thick, stalky weeds

• Forcing the line into objects such as walls or fence posts

TIPS FOR BEST TRIMMING RESULTS

• For best trimming results, operate unit at full throttle.

• Keep the cutting attachment parallel to the ground.

• Do not force the cutting attachment. Allow the tip of the line to do the cutting, especially along walls. Cutting with more than the tip will reduce cutting efficiency and may overload the engine.

• Cut grass over 203mm (8 inches) by working from top to bottom in small increments to avoid premature line wear or engine drag.

• Cut from left to right whenever possible. Cutting to the right improves the unit's cutting efficiency. Clippings are thrown away from the operator.

• Slowly move the trimmer into and out of the cutting area at the desired height. Move either in a forward-backward or side-to-side motion. Cutting shorter lengths produces the best results.

• Trim only when grass and weeds are dry.

• The life of your cutting line is dependent upon:

• Proper adherence of trimming techniques (explained above)

• What vegetation is cut

• Where vegetation is cut

For example, the line will wear faster when trimming against a foundation wall as opposed to trimming around a tree.

DECORATIVE TRIMMING

Decorative trimming is accomplished by removing all vegetation around trees, posts, fences and more.

Rotate the whole unit so that the cutting attachment is at a 30° angle to the ground (Fig. 23).

USING THE CUTTING BLADE

Before operating the unit with the cutting blade, stand in the operating position (Fig. 24). Refer to Holding the Trimmer.

CAUTION:

Do not remove or alter the line cutting blade assembly. Excessive line length will make the clutch overheat. This may lead to serious personal injury or damage to the unit.

WARNING: Always wear eye, hearing, foot and

body protection to reduce the risk of injury when operating this unit.

Fig. 21

OPERATING INSTRUCTIONS

Fig. 22

Fig. 23

WARNING:

Always wear eye, hearing, foot, body protection and the shoulder strap to reduce the risk of injury when operating this unit.

WARNING: Do not use the cutting blade for

edging or as an edger. Severe personal injury to yourself or others can result.

Cutting Blade Operating Tips

To establish a rhythmic cutting procedure:

• Plant feet firmly, comfortably apart.

• Bring the engine to full throttle before entering the material to be cut. At full throttle the blade has maximum cutting power and is less likely to bind, stall or cause blade thrust (which can result in serious personal injury to the operator or others).

• Cut while swinging the upper part of your body from left to right

• Always release the throttle trigger and allow the engine to return to idle speed when not cutting.

• When you are finished, always unsnap the unit from the harness before taking off the harness.

OPERATING INSTRUCTIONS

CAUTION: Bl

ade thrust may occur when the spinning blade contacts an object that it does not immediately cut. Blade thrust can be violent enough to cause the unit and/or operator to be propelled in any direction, and possibly lose control of the unit. Blade thrust can occur without warning if the blade snags, stalls or binds. This is more likely to occur in areas where it is difficult to see the material being cut.

WARNING:

The blade continues to spin after the engine is turned off. The coasting blade can seriously cut you if accidentally touched.

Fig. 24

• Swing the unit in the opposite direction as the blade spins, which increases the cutting action.

• After the return swing, move forward to the next area to be cut plant your feet again.

• The cutting blade is designed with a second cutting edge. You can use it by removing the blade, turning it upside down, and reinstalling it.

To reduce the chance of material wrapping around the blade, follow these steps:

• Cut at full throttle

• Swing the unit into material to be cut from your left to your right (Fig. 25)

• Avoid the material just cut as you make the return swing

WARNING: Do not sharpen the cutting blade.

Sharpening the blade can cause the blade tip to break off while in use. This can result in severe personal injury to yourself or others. Replace the blade.

Fig. 25

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.

NOTE: Maintenance, replacement, or repair of the emission

control devices and system may be performed by any nonroad engine repair establishment, individual or authorized service dealer.

CAUTION: Do not clear away any cut material

with the engine running or blade turning. To avoid serious personal injury, turn off the engine. Allow the blade to stop before removing materials wrapped around the blade shaft.

FREQUENCY MAINTENANCE REQUIRED REFER TO

Every 10 hours Clean and re-oil air filter Page 12

Every 25 hours Check spark plug condition and gap Page 13

NOTE: Please read the California/EPA statement that

came with the unit for a complete listing of terms and coverage for the emissions control devices, such as the spark arrestor, muffler, carburetor, etc.

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.

LINE INSTALLATION

This section covers both SplitLine™ and standard single line installation.

Always use original equipment manufacturer 2.67 mm (0.105 inch) replacement line. Line other than the specified may make the engine overheat or fail.

There are two methods to replace the trimming line:

• Wind the inner reel with new line

• Install a prewound inner reel

Winding the Existing Inner Reel

1. Hold the outer spool with one hand and unscrew the Bump Knob clockwise (Fig. 26). Inspect the bolt inside the bump knob to make sure it moves freely. Replace the bump knob if damaged.

2. Remove the inner reel from the outer spool (Fig. 26).

3. Remove spring from the inner reel (Fig. 26).

4. Use a clean cloth to clean the inner reel, spring, shaft and inner surface of the outer spool (Fig. 27).

5. Check the indexing teeth on the inner reel and outer spool for wear (Fig. 28). If necessary, remove burrs or replace the reel and spool.

NOTE: SplitLine™ can only be

used with the inner reel with the slotted holes. Single line can be used on either type of inner reel. Use Figure 29 to identify the inner reel you have.

NOTE: Always use the correct line length when installing

trimming line on the unit. The line may not release properly if the line is too long.

Single Line Installation

Go To Step 8 for SplitLine™ Installation

6. Take approximately 5 m (16 feet) of new trimming line, loop it into two equal lengths. Insert each end of the line through one of the two holes in the inner reel (Fig. 30). Pull the line through the inner reel so that the loop is as small as possible.

7. Wind the lines in tight even layers, onto the reel (Fig. 31). Wind the line in the direction indicated on the inner reel. Place your index finger between the two lines to stop the lines from overlapping. Do not overlap the ends of the line. Proceed to step 12.

SplitLine™ Installation

8. Take approximately 2.5 m (8 feet) of new trimming line. Insert one end of the line through one of the two holes in the inner reel (Fig. 32). Pull the line through the inner reel until only about 4 inches is left out.

9. Insert the end of the line into the open hole in the inner reel and pull the line tight to make the loop as small as possible (Fig. 32).

10. Before winding, split the line back about 6 inches.

11. Wind the line in tight even layers in the direction indicated on the inner reel.

MAINTENANCE AND REPAIR INSTRUCTIONS

WARNING: Never use metal-reinforced line,

wire, chain or rope. These can break off and become dangerous projectiles.

Inner Reel

Spring

Outer Spool

Bump Knob

Bolt

Fig. 26

Fig. 27

Slotted

Holes

For Use with SplitLine™

or Single Line

For Use with Single

Line ONLY

Fig. 29

Fig. 30

Fig. 31

Loop

Indexing Teeth

Fig. 28

6. Place the new inner reel inside the outer spool. Push the inner reel and outer spool together. While holding the inner reel and outer spool, grasp the ends and pull firmly to release the line from the holding slots in the spool.

7. Hold the inner reel in place and install the bump knob by turning counterclockwise. Tighten securely.

AIR FILTER MAINTENANCE

Cleaning the Air Filter

Failure to maintain the air filter properly can result in poor performance or can cause permanent damage to the engine.

1. Open the air filter cover by unscrewing the cover screw (Fig. 35).

2. Remove the air filter and the screen that sits behind it (Fig. 35).

3. Wash the filter in detergent and water. Rinse the filter

thoroughly and allow it to dry.

4. Apply enough clean SAE 30 motor oil to lightly coat the filter.

5. Squeeze the filter to spread and remove excess oil.

6. Replace the air filter and the screen that sits behind it (Fig. 35).

NOTE: Operating the unit without the air filter WILL VOID the

warranty.

7. Reinstall the air filter cover. Insert the hooks on the air filter

housing into the slots on the air filter cover (Fig. 35).

8. Swing the air filter cover to the right and align the cover screw

with the cover screw hole (Fig. 35). Tighten the cover screw to secure the air filter cover.

NOTE: Do not over tighten as this may strip the screw.

MAINTENANCE AND REPAIR INSTRUCTIONS

NOTE:

Failure to wind the line in the direction indicated will

cause the cutting attachment to operate incorrectly.

2. Insert the ends of the line into the two holding slots (Fig. 33).

13. Insert the ends of the line through the eyelets in the outer spool and place inner reel with spring inside the outer spool (Fig. 34). Push the inner reel and outer spool together. While holding the inner reel and outer spool, grasp the ends and pull firmly to release the line from the holding slots in the reel.

NOTE: The spring must be assembled on the inner reel

before reassembling the cutting attachment.

14. Hold the inner reel in place and install the bump knob by turning counterclockwise. Tighten securely.

INSTALLING A PREWOUND REEL

1. Hold the outer spool with one hand and unscrew the bump knob clockwise (Fig. 26). Inspect the bolt inside the bump knob to make sure it moves freely. Replace the bump knob if damaged.

2. Remove the old inner reel from the outer spool (Fig. 26).

3. Remove the spring from the old inner reel (Fig. 26).

4. Place the spring in the new inner reel.

NOTE: The spring must be assembled on the inner reel

before reassembling the cutting attachment.

5. Insert the ends of the line through the eyelets in the outer spool (Fig. 34).

Fig. 32

Fig. 33

Holding Slots

Fig. 34

Spring

WARNING: To avoid serious personal injury,

always turn the unit off and allow it to cool before you clean or service it.

Screen

Fig. 35

Hooks

Air Filter

Cover

Air Filter

Air Filter Housing

Air Filter Cover

Cover Screw

Cover

Screw Hole

Air Filter Housing

Slots

MAINTENANCE AND REPAIR INSTRUCTIONS

IDLE SPEED ADJUSTMENT

NOTE: Careless adjustments can seriously damage the unit.

An authorized service dealer should make carburetor adjustments.

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 run for one minute to warm up. Refer to

Starting/Stopping Instructions.

2. Release the throttle trigger and let the engine idle. If the engine

stops, insert a small phillips screwdriver into the idle adjustment screw (Fig. 36). Turn the idle speed screw clockwise 1/8 of a turn at a time (as needed) until the engine idles smoothly.

3. If the engine appears to be idling too fast, 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 should solve most engine problems. If not and all of 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.

REPLACING THE SPARK PLUG

Use replacement #753-06193, a Champion RDJ7J spark plug, or equivalent. The correct air gap is 0.025 inch (0.635 mm).

1. Stop the engine and allow it to cool. Grasp the plug wire

firmly and pull it from the spark plug.

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

3. Replace a cracked, fouled or dirty spark plug. Set the air gap at

0.025 in. (0.635 mm) using a feeler gauge (Fig. 37).

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.

CLEANING

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 a fueled unit 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 planning on storing the unit 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 30 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 3-5

drops 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 it 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: The cutting attachment will spin during idle speed adjustments. Wear protective clothing and observe all safety instructions to prevent serious personal injury.

Fig. 37

0.025 in.

(0.635 mm.)

WARNING: Do not sand blast, scrape or clean

electrodes. Grit in the engine could damage the cylinder.

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

Fig. 36

Idle Speed Screw

TROUBLESHOOTING

CAUSE ACTION

Engine overspeed protection engaged Allow the engine to cool down for 10 minutes before restarting.

CAUSE ACTION

Old or improperly mixed fuel Drain fuel tank and add fresh fuel mixture Fouled spark plug Replace or clean the spark plug

CAUSE ACTION

Old or improperly mixed fuel Drain fuel tank and add fresh fuel mixture Cutting head bound with grass Stop the engine and clean the cutting head Dirty air filter Clean or replace the air filter

CAUSE ACTION

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

With blue choke lever in position 3, squeeze the trigger and pull the starter

rope Old or improperly mixed fuel Drain fuel tank and add fresh fuel mixture Fouled spark plug Replace or clean the spark plug

CAUSE ACTION

Cutting head bound with grass Stop the engine and clean cutting head Cutting head out of line Refill with new line Inner reel bound up Rewind the inner reel Cutting head dirty Clean inner reel and outer spool Line welded Disassemble, remove the welded section and rewind Line twisted when refilled Disassemble and rewind the line

Not enough line is exposed

Push the bump knob and pull out line until 4 inches (102 mm) of line is outside of

the cutting head

CAUSE ACTION

Oil, cleaner or lubricant in cutting head Clean and thoroughly dry the cutting head

CAUSE ACTION

Air filter is plugged Replace or clean the air filter Old or improperly mixed fuel Drain fuel tank and add fresh fuel mixture Improper Idle Speed Adjust Idle Speed

ENGINE WILL NOT START

ENGINE WILL NOT IDLE

ENGINE WILL NOT ACCELERATE

IF FURTHER ASSISTANCE IS REQUIRED, CONTACT AN AUTHORIZED SERVICE DEALER.

ENGINE LACKS POWER OR STALLS

CUTTING LINE ADVANCES UNCONTROLLABLY

CUTTING HEAD WILL NOT ADVANCE LINE

ENGINE STOPS WHILE IN USE

*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.

SPECIFICATIONS*

Engine Type .....................................................................................................................................................................Air-Cooled, 2-Cycle

Stroke.....................................................................................................................................................................................1.10 in. (2.8 cm)

Displacement ..........................................................................................................................................................................................27 cc

Operating RPM..............................................................................................................................................................................6,300+ rpm

Idle Speed RPM..................................................................................................................................................................2,800 - 3,400 rpm

Spark Plug Gap...............................................................................................................................................................0.025 in. (0.635 mm)

Lubrication..............................................................................................................................................................................Fuel/Oil Mixture

Fuel/Oil Ratio ............................................................................................................................................................................................40:1

Fuel Tank Capacity................................................................................................................................................................14 fl.oz. (414 ml)

Approximate Unit Weight (No gas, with cutting attachment, shield and handle) ......................................................... 11-13 lbs. (5-6 kg)

Cutting Mechanism ...................................................................................................... 4-Tooth Cutting Blade, Dual String Cutting Head

Line Spool .................................................................................................................................................................. Bump Line Releaser

Line Spool Diameter .................................................................................................................................................. 101.6 mm (4 inches)

Trimming Line Diameter............................................................................................................................................ 2.67 mm (0.105 inch)

Cutting Path Diameter, Cutting Attachment .............................................................................................................. 45.7 cm (18 inches)

Cutting Path Diameter, Cutting Blade .......................................................................................................................... 204 mm (8 inches)

Shoulder Harness......................................................................................................................................................... Single Quick-Snap

ELECTRIC STARTER AND POWER START BIT™ FEATURES

This unit is designed to be started with an optional electric starter or Power Start Bit™ that are sold separately. If choosing to start the unit using one of these features or have questions please contact your local retailer or call 1-800-800-7310 U.S, (1-800-668-1238 Canada), for more information and purchasing. You may also go to www.mtdproducts.com or www.mtdproducts.ca.

Electric Start Feature

+ 33 hidden pages

Yard Machines Y2900EC Operator's Manual

Specifications and Main Features

Frequently Asked Questions

User Manual