EGO ST1500SF, ST1500F - 56-Volt Lithium-Ion Cordless 15" String Trimmer 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 page 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.
	Read the Operator's Manual	To reduce the risk of injury, user must read operator's manual.
	Eye Protection	Always wear safety goggles or safety glasses with side shields and a full face shield when operating this product.
	Recycle Symbols	This product uses lithium-ion (Li-ion) batteries. Local, state, or federal laws may prohibit disposal of batteries in ordinary trash. Consult your local waste authority for information regarding available recycling and/or disposal options.
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
DC	Direct Current	Type or a characteristic of current
RPM	Revolutions per minute	Rotational speed

IMPORTANT SAFETY INSTRUCTIONS

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.

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:

READ ALL INSTRUCTIONS

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.

• 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	CH5500 CH2100

• 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!

Should you experience any problem you cannot easily remedy, please contact EGO customer service center 1-855-EGO-5656.

SPECIFICATIONS

Voltage	56V DC
No-load speed	4000-5800 RPM
Cutting Mechanism	Bump Head
Cutting Line Type	0.095" (2.4mm) nylon twist line
Cutting Width	15 in. (38 cm)
Weight (Without battery pack)	7.33 lb. (3.33Kg)

Recommended Cutting Line

PART NAME	TYPE	MODEL NUMBER
Cutting Line	0.095"/2.4mm twist line (Recommended)	AL0951
	0.080"/2.0mm twist line (Compatible)	AL0803

PACKING LIST

PART NAME	QUANTITY
String trimmer	1
Guard	1
Front-assist handle assembly	1
Hex wrench	1
Bolts for locking shaft (ST1500SF Only)	2
Operator's manual	1

DESCRIPTION

KNOW YOUR STRING TRIMMER
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 securely 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.

TRIGGER
Turns the string trimmer On and Off and adjusts the trimmer head speed.

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

HINGE (ST1500SF 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 ST1500SF

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

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 and carefully unfold the shaft. Make sure that the cable is inside the shaft so that it will not be pinched when closing the joints.
   
3. Use the supplied hex wrench to lock the shaft with the bolts supplied.
   

MOUNTING THE GUARD

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

1. Remove the battery pack from the trimmer.
2. Lift the trimmer head and face it downward; align the two mounting holes in the guard with the two bolts that are preassembled on the base of the shaft. Make sure that the internal surface of the guard faces towards the trimmer head.
   
3. Lock the guard in place with the two bolts and the supplied hex wrench.
   

MOUNTING AND ADJUSTING THE FRONT-ASSIST HANDLE

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

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 handle.
   
3. Attach the front-assist handle and lower clamp on the shaft and secure them by pre-tightening the four screws. Turn the front-assist handle upwards so that it points toward the top of the handle (Fig. 7).
   
4. Adjust the front-assist handle position between the rear handle housing and the joint of the shaft, as shown in Fig. 7. For ST1500F, adjust the handle position so that it is between the rear handle housing and the warning label on the shaft. Shorter users may adjust the handle to a lower position (away from you) and taller users may adjust the handle to an upper position (towards you). The handle should be adjusted so your front arm will be straight when using the trimmer.
5. 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 with side shields marked to comply 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.

TO INSTALL/REMOVE BATTERY PACK

Always remove the battery pack from the product when you are assembling parts, making adjustments, cleaning, or when 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

1. Align the ribs of the battery pack with the mounting slots in the string trimmer's battery port.
2. Press the battery pack towards the trimmer head 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

Always be aware of the location of your feet and children or pets around you when pressing the batteryrelease 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 DEVICE

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, with that hand 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.
  

STARTING/STOPPING THE DEVICE

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

1. Press the lock-off lever down and hold it in that position. Depress the trigger to turn on the string trimmer.
2. The rotational speed of the cutting line is controlled with the variable speed trigger. More pressure on the trigger results in higher cutting speed; less pressure on the trigger results in lower cutting speed. Adjust the speed to suit the task at hand.
   

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

To stop the string trimmer
Release the lock-off lever and the trigger to stop the string trimmer.

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

USING THE DEVICE

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.

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. At a minimum, keep all children, bystanders and pets at least 100 feet (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.

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

Check for damaged/worn parts before each use

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 for cleaning your trimmer. Avoid using solvents when cleaning plastic parts. Most plastics are susceptible to damage from various types of commercial solvents. Use clean clothes to remove dirt, dust, oil, grease, etc.

Tips for best trimming results

• 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 (200 mm) should be cut by working 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 bump knob on the ground while operating the trimmer.

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 bump knob 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

NOTICE: Always use the recommended nylon cutting line with a diameter that does not exceed 0.095 in. (2.4 mm). Using line other than that specified may cause the string trimmer to overheat or become damaged.

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

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

1. Remove the battery pack.
2. Rotate the spool retainer in the arrow direction as necessary to align the LOAD line on the spool retainer with the eyelets in the spool base.
   
3. Cut one piece of cutting line 16 ft. (5m) long. Insert the line into the mounting hole, which is located inside the eyelet. Push until the end of the line comes out of the other side of the spool base. Pull the line from the other side until equal amounts of line appear on both sides of the spool.
   
4. Rotate the spool retainer in the direction of the arrow to wind the line onto the spool until approximately 5.5 in. (14cm) of line is showing on each side.
   
5. Push the spool retainer down while pulling on lines to manually advance the line and to check for proper assembly of the trimmer head.

RELOAD THE CUTTING LINE, IF NECESSARY

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

1. Remove the battery pack.
2. Press the release tabs on the spool retainer and remove the spool retainer by pulling it straight out (Fig. 17 & 18).
   
3. Remove the cutting line from the spool retainer.
4. With one hand holding the spool base, use another hand to grasp the spool retainer and align the tabs on the spool retainer with the holes in the spool base; use your palm to press and rotate the spool retainer left and right until the tabs lock with the spool base.
   
5. Following the instructions in "LINE REPLACEMENT" 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, changing add-on attachments 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. Press the 2 release tabs on the spool retainer to remove it (see Fig. 17 & 18).
2. Pull the spring out of the spool base (Fig. 22).
   
3. Wear gloves to hold the spool base with one hand and, with the other hand, use an impact socket wrench (9/16", 14mm) to loosen and remove the nut.
   
4. Remove the 2 washers from the motor shaft and save them for reassembly.
   
5. Hold the spool base and pull it straight out from the motor shaft.
   
6. Remove the flange from the spool base and save it to secure the new spool base.
   

Install the new trimmer head

1. Position the flange removed in step 6 of the "remove the trimmer head" section onto the motor shaft with the flat surface facing away from the base.
   
2. Align the mounting hole in the spool base with the motor shaft and mount the base onto the shaft.
3. Position the plain washer and then the spring washer onto the motor shaft
   
4. Mount the nut onto the shaft and turn it clockwise by hand to pre-tighten it.
   
5. Wear gloves to hold the spool base with one hand, and, with the other hand, use a socket wrench (9/16", 14mm) to tighten the nut onto the shaft.
6. Fit the spring into the spool base and make sure it is pressed into position (Fig. 22).
7. With one hand holding the spool base, use the other hand to grasp the spool retainer and align the tabs on the spool retainer with the holes in the spool base. Use your palm to press and rotate the spool retainer left and right until the tabs lock with the spool base. (Fig. 19 & 20).
8. If any parts of the spool retainer assembly are damaged or worn, replace the damaged part and reassemble them as following showing.
   

CLEAN THE UNIT

• Clear any grass that may have wrapped itself around the motor shaft or trimmer head.
• Use a small brush or a small brush and a small vacuum cleaner 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. Do not use 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. Secure the blade in a vise.
3. Wear proper eye protection and gloves and be careful not to cut yourself.
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
String trimmer fails to start	The battery pack is not attached to the trimmer. No electrical contact between the trimmer and battery. The battery pack is depleted. The lock-off lever and trigger are not depressed simultaneously.	Attach the battery pack to the trimmer. Remove battery, check contacts and reinstall the battery pack. Charge the battery pack. Press the lock-off lever and hold it, then depress the trigger to turn on the string trimmer.
String trimmer stops while cutting	The guard is not mounted on the trimmer, resulting in an overly long cutting line and motor overload. Heavy cutting line is used. The motor shaft or trimmer head is bound with grass. The motor is overloaded. The battery pack or string trimmer is too hot. The battery pack is disconnected from the tool. The battery pack is depleted.	Remove the battery pack and mount the guard on the trimmer. Use recommended nylon cutting line with diameter no greater than 0.095 in. (2.4 mm). Stop the trimmer, remove the battery, and remove the grass from the motor shaft and trimmer head. 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. Allow the battery pack or trimmer to cool until the temperature drops below 152°F (67°C). Re-install the battery pack. Charge the battery pack.
Trimmer head will not advance line	The motor shaft or trimmer head is bound with grass. There is not enough line on the spool. The trimmer head is dirty. The line is tangled on the spool. The line is too short.	Stop the trimmer, remove the battery, and clean the motor shaft and trimmer head. Remove the battery and replace the cutting line; follow the section "LINE REPLACEMENT" in this manual. Remove the battery and clean the spool, spool retainer and spool base. Remove the battery, remove the line from the spool and rewind; follow the section "RELOAD THE CUTTING LINE" in this manual. Remove the battery and pull the lines manually while alternately pressing down and releasing the trimmer head.
Grass wraps 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.	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 with spool base.	The trimmer head is worn out.	Replace the trimmer head immediately; follow the section "TRIMMER HEAD REPLCEMENT" in this manual.
During line replacement, the line can't be loaded into the trimmer head properly.	Spool retainer's LOAD lines do not align with the eyelets in the spool base.	Rotate the spool retainer in the arrow direction to align the LOAD lines on the spool retainer with the eyelets in the spool base
	The string line is not correctly inserted into the mounting hole in the eyelet.	Align the LOAD lines with the eyelets first, then insert the line into the mounting hole, which is located inside the eyelet.

WARRANTY

5 year limited warranty on EGO outdoor power equipment and 3 year limited warranty on EGO Power+ System battery packs and chargers.
Please contact EGO Customer Service Toll-Free at 1-855-EGO-5656 any time you have questions or warranty claims.
FOR FIVE YEARS from the date of original retail purchase, this EGO product is warranted against defects in material or workmanship. Defective product will receive free repair.
FOR THREE YEARS from the date of original retail purchase, the EGO Power+ System battery pack and charger are warranted against defects in material or workmanship.
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.

EGO Customer Service, 120 Ionia Street SW / Suite 102 Grand Rapids, MI 49503

Documents / Resources

Download manual

Here you can download full pdf version of manual, it may contain additional safety instructions, warranty information, FCC rules, etc.

Download EGO ST1500SF, ST1500F - 56-Volt Lithium-Ion Cordless 15" String Trimmer Manual