EGO ST1520, ST1520S, ST1521S Manual

SAFETY SYMBOLS

The purpose of safety symbols is to attract your attention to possible dangers. The safety symbols and the explanations with them deserve your careful attention and understanding. The symbol warnings do not, by themselves, eliminate any danger. The instructions and warnings they give are no substitutes for proper accident prevention measures.

Be sure to read and understand all safety instructions in this Operator's Manual, including all safety alert symbols such as "DANGER," "WARNING," and "CAUTION" before using this tool. Failure to following all instructions listed below may result in electric shock, fire, and/or serious personal injury.

SYMBOL MEANING
SAFETY ALERT SYMBOL: Indicates DANGER, WARNING, OR CAUTION. May be used in conjunction with other symbols or pictographs.

The operation of any power tools can result in foreign objects being thrown into your eyes, which can result in severe eye damage. Before beginning power tool operation, always wear safety goggles or safety glasses with side shield and a full face shield when needed. We recommend a Wide Vision Safety Mask for use over eyeglasses or standard safety glasses with side shields. Always use eye protection which is marked to comply with ANSI Z87.1.

SAFETY INSTRUCTIONS

This section depicts and describes safety symbols that may appear on this product. Read, understand, and follow all instructions on the machine before attempting to assemble and operate it.

	Safety Alert	Indicates a potential personal injury hazard.
	Eye Protection	Always wear safety goggles or safety glasses with side shields and a full face shield when operating this product.
IPX4	Ingress Protection Degree	Protection from splashing water
V	Volt	Voltage
mm	Millimeter	Length or size
cm	Centimeter	Length or size
in.	Inch	Length or size
kg	Kilogram	Weight
lb	Pound	Weight
	Direct Current	Type or a characteristic of current
RPM	Revolutions per minute	Rotational speed

IMPORTANT SAFETY INSTRUCTIONS

When using electric trimmers, basic safety precautions should always be followed to reduce the risk of fire, electric shock, and personal injury, including the following:

Do not rely on the tool's insulation against electric shock. To reduce the risk of electrocution, never operate the tool in the vicinity of any wires or cables which may carry electric current.

Wear appropriate personal hearing protection during use. Under some conditions and durations of use, noise from this product may contribute to hearing loss.

Some dust created by power sanding, sawing, grinding, drilling and other construction activities contains chemicals known to the state of California to cause cancer, birth defects or other reproductive harm. Some examples of these chemicals are:

• Lead from lead-based paints
• Crystalline silica from bricks and cement and other masonry products, and
• Arsenic and chromium from chemically-treated lumber.

Your risk from these exposures varies, depending on how often you do this type of work. To reduce your exposure to these chemicals: work in a well ventilated area, and work with approved safety equipment, such as those dust masks that are specially designed to filter out microscopic particles.

• Keep Children Away - All visitors should be kept at least 100 feet away from work area.
• Avoid Dangerous Environments – Don't use appliances on damp or wet slope.
• Dress Properly - Do not wear loose clothing or jewelry. They can be caught in moving parts. Use of rubber gloves and substantial footwear is recommended when working outdoors. Wear protective hair covering to contain long hair.
• Use Safety Glasses - Always use face or dust mask if operation is dusty.
• Use the Right Tool - Do not use the tool for any job except that for which it is intended.
• Don't Force the Trimmer - It will do the job better and with less likelihood of a risk of injury at the rate for which it was designed.
• Don't Overreach - Keep proper footing and balance at all times.
• Stay Alert - Watch what you are doing. Use common sense. Do not operate the trimmer when you are tired.
• Do not operate the trimmer while under the influence of alcohol or drugs.
• Keep guards in place and in working order.
• Keep hands and feet away from the cutting area.
• Store Trimmer Indoors - When not in use the trimmer should be stored indoors in a dry and high or locked-up place with the battery pack removed- out of reach of children.
• Maintain Trimmer With Care - Keep the cutting attachment clean for best performance and to reduce the risk of injury. Follow the instructions for changing accessories. Keep the handles dry, clean, and free from oil and grease.
• Check Damaged Parts - Before further use of the trimmer, a guard or other part that is damaged should be carefully checked to determine that it will operate properly and perform its intended function. Check for alignment of moving parts, binding of moving parts, breakage of parts, mounting, and any other condition that may affect its operation. A guard or other part that is damaged should be properly repaired or replaced by an authorized service center unless indicated elsewhere in this manual.
• Clear the area to be cut before each use. Remove all objects such as rocks, broken glass, nails, wire, or string that can be thrown or become entangled in the cutting attachment. Make sure that other persons and pets are at least 100 ft. (30.5m) away.
• Always hold the trimmer firmly, with both hands on the handles, while operating. Wrap your fingers and thumbs around the handles.
• Avoid Accidentally Starting - Don't carry the trimmer with your finger on the trigger.
• Do not operate the trimmer in gaseous or explosive atmospheres. Motors in these appliances normally spark, and the sparks might ignite fumes.
• Damage to Trimmer - If you strike a foreign object with the trimmer or it becomes entangled, stop the tool immediately, check for damage and have any damage repaired before further operation is attempted. Do not operate with a broken guard or spool.
• If the equipment should start to vibrate abnormally, stop the motor and check immediately for the cause. Vibration is generally a warning of trouble. A loose head may vibrate, crack, break or come off the trimmer, which may result in serious or fatal injury. Make sure that the cutting attachment is properly fixed in position. If the head loosens after fixing it in position, replace it immediately. Never use a trimmer with a loose cutting attachment.
• Replace a cracked, damaged or worn-out cutting head immediately, even if damage is limited to superficial cracks. Such attachments may shatter at high speed and cause serious or fatal injury.
• Check the cutting attachment at regular short intervals during operation, or immediately if there is a noticeable change in cutting behavior.
• When replacing the cutting line, use no more than 2.4mm nylon line; using heavier lines than recommended by the manufacturer increases the load on the motor and reduces its operating speed. This results in overheating and damage to the trimmer.
• To reduce the risk of serious injury, never use wire or metal-reinforced line or other material in place of the nylon cutting lines. Pieces of wire could break off and be thrown at high speed toward the operator or bystanders.
• To reduce the risk of injury from loss of control, never work on a ladder or on any other insecure support. Never hold the cutting attachment above waist height.
• If situations occur that are not covered in this manual, use care and good judgment. Contact the EGO Customer Service Center for assistance.
• Do not charge the battery pack in rain, or in wet locations.
• Use only with the battery packs and chargers listed below:

BATTERY PACK	CHARGER
BA1120, BA1400, BA2240, BA2800, BA4200	CH2100 CH5500

• Do not dispose of the battery in a fire. The cells may explode. Check with local codes for possible special disposal instructions.
• Do not open or mutilate the battery. Released electrolyte is corrosive and may cause damage to the eyes or skin. It may be toxic if swallowed.
• 
  Exercise care in handling batteries in order not to short the battery with conducting materials such as rings, bracelets, and keys. The battery or conductor may overheat and cause burns.
• Replacement Parts - When servicing, use only identical EGO replacement parts. Use of any other accessory or attachment may increase the risk of injury.
• Battery tools do not have to be plugged into an electrical outlet; therefore, they are always in operating condition. Be aware of possible hazards even when the tool is not operating. Take care when performing maintenance or service.
• Remove or disconnect battery pack before servicing, cleaning or removing material from the trimmer.
• Do not wash with a hose; avoid getting water in motor and electrical connections.
• Save these instructions. Refer to them frequently and use them to instruct others who may use this tool. If you lend this tool to someone else, also lend these instructions to them to prevent misuse of the product and possible injury.

SAVE THESE INSTRUCTIONS!

SPECIFICATIONS

Voltage	56V
No-load speed	4000~5800 RPM
Cutting Mechanism	Bump Head
Line-Loading Mechanism	Motor driven
Cutting Line Type	0.095 in. (2.4 mm) nylon twist line
Cutting Width	15 in. (38 cm)
Weight (Without battery pack)	7.28 lb. (3.3 kg)

Recommended Cutting Line

PART NAME	TYPE	MODEL NUMBER
Cutting Line	0.095 in./2.4 mm twist line	AL2415S/AL2450S

PACKING LIST

PART NAME	QUANTITY
String trimmer	1
Guard	1
Front-assist handle assembly	1
Hex wrench	1
Bolt for locking shaft (ST1520S Only)	1
Cutting line (16 ft., 5 m)	1
Operator's manual	1

DESCRIPTION

KNOW YOUR STRING TRIMMER (Fig. 1)
The safe use of this product requires an understanding of the information on the tool and in this operator's manual, as well as knowledge of the project you are attempting. Before using this product, familiarize yourself with all operating features and safety rules.

Never operate the tool without the guard firmly in place. The guard must always be on the tool to protect the user.

ADJUSTABLE FRONT-ASSIST HANDLE
For easy control of the trimmer during cutting.

REAR HANDLE
Ergonomic handle with overmold improves comfort and grip.

VARIABLE-SPEED SWITCH TRIGGER
Turns the string trimmer On and Off and adjusts the trimmer head speed.

LOCK-OFF BUTTON
Helps prevent accidental or unauthorized activation of the trigger. It must be depressed before the trigger can be activated.

LINE-LOADING BUTTON
Press this button to automatically wind the line into the trimmer head.

HINGE (ST1520S Only)
Connects and locks the two foldable shafts.

TRIMMER HEAD (BUMP HEAD)
Stores the cutting line and releases the cutting line when the head is lightly tapped on the ground during operation.

GUARD
Reduces the risk of injury from foreign objects flung backwards toward the operator and from contact with the cutting attachment.

LINE-CUTTING BLADE
Steel blade on the guard that maintains the cutting line at the proper length.

BATTERY-RELEASE BUTTON
Releases the battery pack from the tool.

LATCH
Secures the battery pack to the tool.

EJECTION MECHANISM
Aids in battery removal.

ASSEMBLY

If any parts are damaged or missing, do not operate this product until the parts are replaced. Use of this product with damaged or missing parts could result in serious personal injury.

Do not attempt to modify this product or create accessories not recommended for use with this string trimmer. Any such alteration or modification is misuse and could result in a hazardous condition leading to possibly serious personal injury.

Always remove the battery pack from the product when you are assembling parts, making adjustments, cleaning, or when the product is not in use.

UNPACKING

• This product requires assembly.
• Carefully remove the product and any accessories from the box. Make sure that all items listed in the packing list are included.
• Inspect the tool carefully to make sure that no breakage or damage occurred during shipping.
• Do not discard the packing material until you have carefully inspected and satisfactorily operated the tool.
• If any parts are damaged or missing, please return the product to the place of purchase.

UNFOLDING THE SHAFT

(ONLY FOR ST1520S)

In order to avoid pinching your hands or fingers, do not hold the shaft at the joint.

Do not attempt to start the trimmer until the shaft has been locked.

1. Remove the battery pack from the trimmer.
2. Put your trimmer on the ground or the floor and make sure that the cable is inside the shaft, so that it will not be pinched when closing the joints. Carefully unfold the shaft until the two holes in the joint are accurately aligned (Fig. 2).
   
3. Insert the bolt (supplied) and tighten it with the supplied hex wrench to lock the shaft in place (Fig. 3).
   

MOUNTING THE GUARD

Always wear gloves when mounting or replacing the guard. Be careful of the blade on the guard and wear gloves to protect your hands from being injured by the blade.

1. Remove the battery pack from the trimmer.
2. Lay the trimmer on the ground or the floor with the trimmer head facing upward.
3. Align the two bolts, which are preassembled on the guard, with the two screw holes in the shaft (Fig. 4), and then tighten them with the supplied hex wrench (Fig. 5).
   

MOUNTING AND ADJUSTING THE FRONT-ASSIST HANDLE

1. Remove the battery pack from the trimmer.
2. Loosen the four screws in the handle with the supplied hex wrench and remove the screws and the lower clamp from the frontassist handle (Fig. 6).
   
3. Refer to Fig.7: attach the frontassist handle and the lower clamp onto the shaft and secure them by pre-tightening the four screws. Turn the front-assist handle upward so that it points toward the top of the rear handle.
   
4. Adjust the front-assist handle position so that it is between the rear handle housing and the joint of the shaft, as shown in Fig. 8. For ST1520, adjust the handle position so that it is between the rear handle housing and the warning label on the shaft. The handle should be adjusted so that your front arm will be straight when using the trimmer.
   
5. Use the supplied hex wrench to tighten the four screws so that the handle cannot be rotated on the shaft.

OPERATION

Do not allow familiarity with this product to make you careless. Remember that a careless fraction of a second is sufficient to inflict serious injury.

Always wear eye protection marked that it complies with ANSI Z87.1, along with hearing protection. Failure to do so could result in objects being thrown into your eyes and other possible serious injuries.

Do not use any attachments or accessories not recommended by the manufacturer of this product. The use of attachments or accessories not recommended can result in serious personal injury.

APPLICATION

You may use this product for the purposes listed below:
Trimming: use for removing grass and weeds along walls, fences, trees and borders.
Cutting: use for cutting grass that is difficult to reach using a normal mower.

TO INSTALL/REMOVE BATTERY PACK

Always remove the battery pack from the product when you are assembling parts, making adjustments, cleaning, or when it is not in use. Removing the battery pack will prevent accidental starting that could cause serious personal injury.

NOTE: Fully charge the battery pack before first use.

To install battery pack (Fig. 9)

1. Align the ribs of the battery pack with the battery-mounting slots in the string trimmer.
2. Slide the battery pack in until it snaps into position.

NOTE: Make sure that the latch on the string trimmer snaps into place and the battery pack is secured to the tool before beginning operation.

To remove battery pack (Fig. 10)

Always be aware of the location of your feet and children or pets around you when pressing the battery release button. Serious injury could result if the battery pack falls. NEVER remove the battery pack at a high location.

1. Hold the battery pack in the palm of your hand.
2. Press the battery-release button with your thumb; the battery pack will disengage from the latch.
3. Grasp the battery pack and remove it from the string trimmer.

HOLDING THE UNIT

Dress properly to reduce the risk of injury when operating this tool. 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 or sandals or go barefoot. Before operating the unit, stand in the operating position and check that:

• The operator is wearing eye protection and proper clothing.
• One arm is slightly bent, and the hand on that arm is holding the rear handle.
• The other arm is straight, and that hand is holding the front-assist handle.
• The trimmer head is parallel to the ground and easily contacts the material to be cut without the operator having to bend over (Fig. 11).
  

STARTING/STOPPING THE UNIT

Before starting the string trimmer

• Make sure that you have a secure and balanced footing.
• Stand upright and hold the string trimmer in a relaxed position.
• Make sure that the cutting line is not touching the ground or any other objects.
• Hold the string trimmer with both hands: one hand on the rear handle and one hand on the front-assist handle.

To start the string trimmer (Fig. 12)

1. Press the lock-off button down and hold it in that position. Press the switch trigger to turn on the string trimmer. Release the lock-off button and continue to squeeze the switch trigger for continued operation.
2. The rotational speed of the trimmer head is controlled with the switch trigger. More pressure on the trigger results in higher speed; less pressure on the trigger results in lower speed. Adjust the speed to suit the task at hand.

NOTICE: The motor runs only when the lock-off button and switch trigger are both pressed.

To stop the string trimmer
Release the switch trigger to stop the string trimmer.

Always remove the battery pack from the string trimmer during work breaks and after finishing work.

USING THE UNIT

To avoid serious personal injury, wear goggles or safety glasses at all times when operating this unit. Wear a face mask or dust mask in dusty locations.

To prevent serious personal injury, remove the battery pack from the tool before servicing, cleaning, changing attachments or removing material from the unit.

Clear the area to be cut before each use. Remove all objects, such as rocks, broken glass, nails, wire, or string that can be thrown or become entangled in the cutting attachment. Clear the area of children, bystanders, and pets. Keep all children, bystanders and pets at least 100 ft. (30.5m) away; there still may be risk to bystanders from thrown objects. Bystanders should be encouraged to wear eye protection. If you are approached, stop the motor immediately.

Before each use check for damaged/worn parts
Check the trimmer head, guard and front-assist handle and replace any parts that are cracked, warped, bent, or damaged in any away.
The line-cutting blade on the edge of the guard can dull over time. It is recommended that you periodically sharpen it with a file or replace it with a new blade.

Always wear gloves when mounting or replacing the guard or when sharpening or replacing the blade. Note the location of the blade on the guard and protect your hand from injury.

Clean the trimmer after each use
See the Maintenance section for cleaning instructions.

Never use water to clean your trimmer. Avoid using solvents when cleaning plastic parts. Most plastics are susceptible to damage from various types of commercial solvents. Use clean cloths to remove dirt, dust, oil, grease, etc.

Tips for best trimming results (Fig. 13)

• The correct angle for the cutting attachment is parallel to the ground.
• Do not force the trimmer. Allow the very 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 motor.
• The cutting height is determined by the distance of the cutting line from the lawn surface.
• Grass over 8 inches (200mm) should be cut by working progressively from top to the bottom in small increments to avoid premature line wear or motor drag.
• Slowly move the trimmer into and out of the area being cut, maintaining the cutting head position at the desired cutting height. This movement can be either a forward-backward motion or a side-to-side motion. Cutting shorter lengths produces best results.
  
• Trim only when grass and weeds are dry.
• Wire and picket fences can cause extra string wear or breakage. Stone and brick walls, curbs, and wood may wear strings rapidly.
• Avoid trees and shrubs. Tree bark, wood moldings, siding, and fence posts can easily be damaged by the strings.

ADJUSTING CUTTING LINE LENGTH

The trimmer head allows the operator to release more cutting line without stopping the motor. As line becomes frayed or worn, additional line can be released by lightly tapping the trimmer head on the ground while operating the trimmer (Fig. 14).

Do not remove or alter the line cutting blade assembly. Excessive line length will cause the motor to overheat and may result in serious personal injury.

For best results, tap the trimmer head on bare ground or hard soil. If line release is attempted in tall grass, the motor may overheat. Always keep the trimming line fully extended. Line release becomes more difficult as the cutting line becomes shorter.

LINE REPLACEMENT

Never use metal-reinforced line, wire, or rope, etc. These can break off and become dangerous projectiles.

Always use the recommended nylon cutting line with diameter no more than 0.095 in. (2.4mm). Using line other than that specified may cause the string trimmer to overheat or become damaged.

The string trimmer is equipped with an advanced auto-line winding system. The cutting line can be wound onto the spool simply by pressing a single button. Loading a full spool can usually be completed in 8 seconds. Avoid repeated operation of the winding system in rapid succession to reduce the possibility of motor damage.

1. Remove the battery pack from the trimmer.
2. Cut one piece of cutting line 16 ft. (5m) long.
3. Insert the line into the eyelet (Fig.15) and push the line until the end of the line comes out of the opposite eyelet.
   NOTICE: It is not necessary to align the eyelets in order to insert the cutting line.
   
4. Pull the line from the other side until equal lengths of the line appear on both sides of the trimmer head (Fig. 16).
   
5. Install the battery pack onto the string trimmer.
6. Press and hold the line-loading button to start the line-winding motor. The line will be wound into the trimmer head continuously (Fig. 17).
   
7. Watch the remaining line length carefully. Prepare to release the button as soon as approximately 7 inches (17.8cm) of line are left on each side. Briefly press the lineloading button to adjust the length until 5.5 inches (14cm) of the line is showing on each side.
8. Push down on the trimmer head while pulling on the lines to manually advance the line in order to check for proper assembly of the cutting line.

NOTICE: In case the line is pulled into the trimmer head by accident, open the head and pull the cutting line out from the spool. Follow the section "RELOAD THE CUTTING LINE" in this manual to reload the line.

RELOAD THE CUTTING LINE

NOTICE: When the cutting line breaks from the eyelet or the cutting line is not released when the trimmer head is tapped, you will need to remove the remaining cutting line from the trimmer head and follow the steps below to reload the line.

1. Remove the battery pack from the trimmer.
2. Press the release tabs on the trimmer head and remove the lower cover assembly of the trimmer head by pulling it straight out (Fig. 18a & 18b).
   
3. Remove the cutting line from the trimmer head.
4. Insert the spring into the slot in the lower cover assembly (Fig. 19).
   
5. With one hand holding the trimmer, use another hand to grasp the lower cover assembly and align the slots in the lower cover assembly with the release tabs. Press the lower cover assembly until it snaps into place, at which time you will hear a distinct click sound (Fig. 20).
   
6. Follow the instructions in the "LINE REPLACEMENT" section to reload the cutting line.

MAINTENANCE

When servicing, use only identical replacement parts. Use of any other parts may create a hazard or cause product damage. To ensure safety and reliability, all repairs should be performed by a qualified service technician.

Battery tools do not have to plugged into an electrical outlet; therefore, they are always in operating condition. To prevent serious personal injury, take extra precautions and care when performing maintenance, service or for changing the cutting attachment or other attachments.

To prevent serious personal injury, remove the battery pack from the tool before servicing, cleaning, or removing material from the unit.

TRIMMER HEAD REPLACEMENT

If the head loosens after it is fixed in position, replace it immediately. Never use a trimmer with a loose cutting attachment. Replace a cracked, damaged or worn out cutting head immediately, even if damage is limited to superficial cracks. Such attachments may shatter at high speed and cause serious injury.

Remove the trimmer head

1. Remove the battery pack from the trimmer.
2. Press the release tabs on the trimmer head and remove the lower cover assembly of the trimmer head by pulling it straight out (see Fig. 18a & 18b).
3. Remove the cutting line from the trimmer head (Fig. 22).
   
4. Take the spring out of the spool assembly, if necessary. Save it for reassembly.
5. Wear gloves. Use one hand to grasp the spool assembly to stabilize it, and use the other hand to hold an impact wrench (1/2", 13mm) to loosen the nut in a counterclockwise direction (Fig. 23).
   
6. Remove the nut, washer, spool assembly and upper cover from the motor shaft (Fig. 24).
   
7. Use circlip pliers to remove the circlip. Remove the fan assembly (Fig. 25).
   
8. Replace with a new trimmer head and mount it in following steps.

Install the new trimmer head

1. Align the key slot in the fan assembly with the spline in motor shaft and mount the fan assembly into place (Fig. 26).
   
2. Mount the circlip, upper cover, spool assembly, and washer in that order. Use an impact wrench on the nut to tighten it.
3. Following steps 4 & 5 in "RELOAD THE CUTTING LINE" section in this manual to mount the lower cover assembly.
4. Follow the instructions in "LINE REPLACEMENT" section in this manual to reload the cutting line.
5. Start the tool to see whether the string trimmer will work normally. If it does not, reassemble as described above.

CLEAN THE UNIT

• Clear any grass that may have wrapped itself around the motor shaft or trimmer head.
• Use a small brush or the air discharge of a small vacuum cleaner brush to clean the air vents on the rear housing.
• Keep the air vents free of obstructions.
• Clean the unit using a damp cloth with a mild detergent.
• 
  Do not use any strong detergents on the plastic housing or the handle. They can be damaged by certain aromatic oils, such as pine and lemon, and by solvents such as kerosene. Moisture can also cause a shock hazard. Wipe off any moisture with a soft, dry cloth.

SHARPEN THE LINE-CUTTING BLADE

Always protect your hands by wearing heavy gloves when performing any maintenance on the line-cutting blade.

1. Remove the line-cutting blade from the guard.
2. Wear proper eye protection and gloves and be careful not to cut yourself.
3. Secure the blade in a vise.
4. Carefully file the cutting edges of the blade with a fine-tooth file or sharpening stone, maintaining the original cutting edge angle.
5. Replace the blade on the guard and secure it in place with the two screws.

STORING THE UNIT

• Remove the battery pack from the trimmer.
• Clean the tool thoroughly before storing it.
• Store the unit in a dry, well-ventilated area, locked-up or up high, out of the reach of children. Do not store the unit on or adjacent to fertilizers, gasoline, or other chemicals.

TROUBLESHOOTING

PROBLEM	CAUSE	SOLUTION
The unit fails to start	The battery pack is not attached to the trimmer.	Attach the battery pack to the trimmer.
	No electrical contact between the trimmer and battery.	Remove battery, check contacts and reinstall the battery pack.
	The battery pack is depleted.	Charge the battery pack.
	The lock-off button and switch trigger are not depressed simultaneously.	Press down on the lock-off button and hold it, then depress the switch trigger to turn on the string trimmer.
The unit stops while cutting	The guard is not mounted on the trimmer, resulting in an overly long cutting line and motor overload.	Remove the battery pack and mount the guard on the trimmer.
	Heavy cutting line is used.	Use recommended nylon cutting line with diameter no greater than 0.095 in. (2.4 mm).
	The motor shaft or trimmer head is bound with grass.	Stop the trimmer, remove the battery, and remove the grass from the motor shaft and trimmer head.
	The motor is overloaded.	Remove the trimmer head from the grass. The motor will recover to work as soon as the load is removed. When cutting, move the trimmer head in and out of the grass to be cut and remove no more than 8 inches of length in a single cut.
	The battery pack or string trimmer is too hot.	Allow the battery pack or trimmer to cool until the temperature drops below 152°F (67°C).
	The battery pack is disconnected from the tool.	Re-install the battery pack.
	The battery pack is depleted.	Charge the battery pack.
Trimmer head will not advance line	The motor shaft or trimmer head is bound with grass.	Stop the trimmer, remove the battery, and clean the motor shaft and trimmer head.
	There is not enough line on the spool or the line breaks from the eyelet.	Remove the battery and replace the cutting line follow "LINE REPLACEMENT" section in this manual.
	The line is tangled.	Remove the battery; remove the line from the trimmer head and rewind following "RELOAD THE CUTTING LINE" section in this manual.
	The line is too short.	Remove the battery and pull the lines manually while alternately pressing down and releasing the trimmer head.
Grass is wrapped around trimmer head and motor housing	Cutting tall grass at ground level.	Cut tall grass from the top down, removing no more than 8 inches in each pass to prevent wrapping.
The blade is not cutting the line	The line-cutting blade on the edge of the guard has become dull.	Follow instructions to sharpen the line-cutting blade with a file or replace it with a new blade.
Cracks on the trimmer head or the spool retainer comes loose from spool base	The trimmer head is worn out.	Replace the trimmer head immediately; follow the section "TRIMMER HEAD REPLACEMENT" in this manual.
	The nut that locks the trimmer head is loose	Open the trimmer head and use an impact wrench (1/2", 13mm) to tighten the nut.
The cutting line cannot be wound into the trimmer head properly	The cutting line is too long.	Cut the line so that about 5.5 in. (14cm) long is showing on each side.
	Improper cutting line is used.	We suggest that you use EGO original nylon cutting line with diameter no greater than 0.095 in. (2.4mm), see "Recommended Cutting Line" section in this manual. If using another 0.095 in.(2.4mm) nylon line and the problem persists, please call EGO customer service for advice.
	Grass debris or dirt has accumulated in the trimmer head and blocked the movement of line spool.	Remove the battery, open the trimmer head and clean it thoroughly.
	Motor is overheated due to repeatedly operating the line winding system.	Let the string trimmer work under no load for a few minutes to cool the motor, then try to reload the line.
	Low battery	Charge the battery.
The cutting line cannot be passed through the trimmer head when inserting the line	The cutting line is split or bent at the end.	Cut the worn end of line and reinsert.
	The lower cover is not released to position after reinstalling.	Attach the battery pack onto the trimmer; press the lineloading button to briefly start the powerloading to release the trimmer head.

WARRANTY

HOW TO OBTAIN SERVICE
For warranty service, please contact EGO customer service toll-free at 1-855-EGO-5656. When requesting warranty service, you must present the original dated sales receipt.

For customer service contact us toll-free at: 1-855-EGO-5656 or EGOPOWERPLUS.COM
EGO Customer Service, 120 Ionia Street SW / Suite 102 Grand Rapids, MI 49503

Documents / Resources

References

• The #1 Rated Brand in Cordless Outdoor Power Equipment | EGO

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