EGO POWER+ ST1510T User manual

OPERATOR'S MANUAL
56-VOLT LITHIUM-ION
CORDLESS
STRING TRIMMER
MODEL NUMBER
ST1510T/ST1510T-FC
WARNING: To reduce the risk of injury, the user must read and understand the
Operator’s Manual before using this product. Save these instructions for future reference.
Español p. 71
Français p. 33

56-VOLT LITHIUM-ION CORDLESS BRUSHLESS STRING TRIMMER — ST1510/ST1510-FC2
TABLE OF CONTENTS
Safety Symbols ..........................................3
Safety Instructions......................................4-9
Introduction .............................................9
Specications ..........................................10
Packing List ............................................10
Description .........................................11-13
Assembly ...........................................14-17
Operation ...........................................18-23
Maintenance ........................................24-27
Troubleshooting ......................................28-30
Warranty ...........................................31-32

56-VOLT LITHIUM-ION CORDLESS BRUSHLESS STRING TRIMMER — ST1510/ST1510-FC 3
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.
WARNING: 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 follow all instructions listed below may
result in electric shock, re, 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.
WARNING: 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 shields 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.

56-VOLT LITHIUM-ION CORDLESS BRUSHLESS STRING TRIMMER — ST1510/ST1510-FC4
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 &
Understand
Operator’s
Manual
To reduce the risk of injury, user must read and
understand the operator’s manual before using
this product. Failure to do so can result in serious
injury to the operator and/or bystander.
Eye Protection
Always wear safety goggles or safety glasses
with side shields when operating this product
that comply with ANSI Z87.1
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
Direct Current Type or a characteristic of current
n0No-Load Speed Rotational speed, at no load
RPM Revolutions per Length or size
minute Rotational speed Length or size
cm Centimeter Length or size
mm Millimeter Length or size
kg Kilogram Weight
lb Pound Weight

56-VOLT LITHIUM-ION CORDLESS BRUSHLESS STRING TRIMMER — ST1510/ST1510-FC 5
GENERAL BATTERY-OPERATED POWER TOOL SAFETY WARNINGS
WARNING: Read all safety warnings, instructions, illustrations and
specications provided with this power tool. Failure to follow all instructions listed
below may result in electric shock, re and/or serious injury.
Save all warnings and instructions for future reference.
WORK AREA SAFETY
◾Keep work area clean and well lit. Cluttered or dark areas invite accidents.
◾Do not operate power tools in explosive atmospheres, such as in the
presence of ammable liquids, gases or dust. Power tools create sparks which
may ignite the dust or fumes.
◾Keep children and bystanders away while operating a power tool.
Distractions can cause you to lose control.
◾Avoid Dangerous Environment - Don't use appliances in damp or wet locations.
PERSONAL SAFETY
◾Stay alert, watch what you are doing and use common sense when
operating a power tool. Do not use a power tool while you are tired or under
the inuence of drugs, alcohol or medication. A moment of inattention while
operating power tools may result in serious personal injury.
◾Always use personal protective equipment. Personal protective equipment
such as eye protection, dust mask, non-skid safety shoes, hard hat and/or
hearing protection used for appropriate conditions will reduce personal injuries.
◾Prevent unintentional starting. Ensure the switch is in the off-position
before connecting to the battery pack, picking up or carrying the tool.
Carrying power tools with your nger on the switch or energizing power tools that
have the switch on invites accidents.
◾Remove any adjusting key or wrench before turning the power tool on. A
wrench or a key left attached to a moving part of the power tool may result in
personal injury.
◾Do not overreach. Keep proper footing and balance at all times. This enables
better control of the power tool in unexpected situations.

56-VOLT LITHIUM-ION CORDLESS BRUSHLESS STRING TRIMMER — ST1510/ST1510-FC6
◾Cautionary statements regarding the use of proper clothing and footwear
during operation to reduce the risk of injury that may be caused by ying
debris.
◾If devices are provided for the connection of dust extraction and collection
facilities, ensure these are connected and properly used. Use of dust
collection can reduce dust-related hazards.
◾Do not let familiarity gained from frequent use of tools allow you to become
complacent and ignore tool safety principles. A careless action can cause
severe injury within a fraction of a second.
POWER TOOL USE AND CARE
◾Do not force the power tool. Use the correct power tool for your application.
The correct power tool will do the job better and safer at the rate for which it was
designed.
◾Do not use the power tool if the switch does not turn it on and off. Any power
tool that cannot be controlled with the switch is dangerous and must be repaired.
◾Use Right Appliance – Do not use appliance for any job except that for which it is
intended.
◾Remove the battery pack, if detachable, from the power tool and/or activate
any battery disabling device before clearing jammed material, making any
adjustments, changing accessories, cleaning, or storing power tools. Such
preventive safety measures reduce the risk of starting the power tool accidentally.
◾Store Idle Appliances Indoors – When not in use, appliances should be
stored indoors in dry, and high or locked-up place – out of reach of children.
◾Maintain power tools and accessories. Check for misalignment or binding of
moving parts, breakage of parts and any other condition that may affect the
power tool’s operation. If damaged, have the power tool repaired before use.
Many accidents are caused by poorly maintained power tools and accessories.
◾Keep cutting tools sharp and clean. Properly maintained cutting tools with
sharp cutting edges are less likely to bind and are easier to control.
◾Use the power tool, accessories, tool bits, etc. in accordance with these
instructions, taking into account the working conditions and the work to be
performed. Use of the power tool for operations different from those intended
could result in a hazardous situation.

56-VOLT LITHIUM-ION CORDLESS BRUSHLESS STRING TRIMMER — ST1510/ST1510-FC 7
◾Keep handles and grasping surfaces dry, clean and free from oil and grease.
Slippery handles and grasping surfaces may lead to unsafe handling and/or loss
of control of the tool.
◾Keep cables away from the working area of the tool. During operation cables
may be hidden from view and can be accidentally damaged by the tool.
BATTERY TOOL USE AND CARE
◾Recharge only with the charger specied by the manufacturer. A charger that
is suitable for one type of battery pack may create a risk of re when used with
another battery pack. Use only with the battery packs and chargers listed below.
BATTERY PACK CHARGER
BA1400, BA1400-FC, BA2800, BA2800-FC,
BA4200, BA4200-FC, BA1400T, BA1400T-FC,
BA2800T, BA2800T-FC, BA4200T, BA4200T-FC,
BA5600T, BA5600T-FC
CH2100, CH2100-FC,
CH5500, CH5500-FC,
CH2800D, CH2800D-FC
◾Use power tools only with specically designated battery packs. Use of any
other battery packs may create a risk of injury and re.
◾When battery pack is not in use, keep it away from other metal objects, like
paper clips, coins, keys, nails, screws or other small metal objects, that
can make a connection from one terminal to another. Shorting the battery
terminals together may cause burns or a re.
◾Under abusive conditions, liquid may be ejected from the battery; avoid
contact. If contact accidentally occurs, ush with water. If liquid contact
eyes, additionally seek medical help. Liquid ejected from the battery may
cause irritation or burns.
◾Do not use a battery pack or tool that is damaged or modied. Damaged or
modied batteries may exhibit unpredictable behavior resulting in re, explosion
or risk of injury.
◾Do not expose a battery pack or tool to re or excessive temperature.
Exposure to re or temperature above 212 °F (100°C) may cause explosion.
◾Do not modify or attempt to repair the appliance or the battery pack (as
applicable) except as indicated in the instructions for use and care.

56-VOLT LITHIUM-ION CORDLESS BRUSHLESS STRING TRIMMER — ST1510/ST1510-FC8
◾Follow all charging instructions and do not charge the battery pack or
tool outside the temperature range specied in the instructions. Charging
improperly or at temperatures outside the specied range may damage the
battery and increase the risk of re.
SERVICE
◾Have your power tool serviced by a qualied repair person using only
identical replacement parts. This will ensure that the safety of the power tool is
maintained.
◾Never service damaged battery packs. Service of battery packs should only be
performed by the manufacturer or authorized service providers
SAFETY INSTRUCTIONS FOR STRING TRIMMER
◾When replacing the cutting line, use no more than 0.095 in. (2.4 mm) 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.
◾Replace a cracked, damaged or worn-out cutting head immediately, even if
damage is limited to supercial cracks. Such attachments may shatter at high
speed and cause serious or fatal injury.
IMPORTANT SAFETY INSTRUCTIONS
◾If the power tool should start to vibrate abnormally or become noisy, stop
the motor and check immediately for the cause. Abnormal noise is generally a
warning of trouble.
◾Make sure all proper guards and other safety devices are properly and
securely attached before using this product. Do not operate without guards
in place.
◾Do not charge the battery pack in rain, or in wet locations.
◾Do not dispose of the battery in a re. 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.

56-VOLT LITHIUM-ION CORDLESS BRUSHLESS STRING TRIMMER — ST1510/ST1510-FC 9
◾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.
◾Do not wash with a hose; avoid getting water in motor and electrical
connections.
◾If situations occur that are not covered in this manual, use care and good
judgment. Contact the EGO Customer Service Center for assistance.
◾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!
INTRODUCTION
Congratulations on your selection of the new EGO POWER+ 56V Lithium-ion string
trimmer. It has been designed, engineered, and manufactured to give you the best
possible dependability and performance.
Should you experience any problem you cannot easily remedy, please contact EGO
customer service center 1-855-EGO-5656.
This manual contains important information on the safe assembly, operation and
maintenance of your string trimmer. Read it carefully before using the string trimmer.
Keep this manual handy so you can refer to it at any time.
SERIAL NUMBER _____________________ DATE OF PURCHASE _________________
YOU SHOULD RECORD BOTH SERIAL NUMBER AND DATE OF PURCHASE AND KEEP IN A SAFE
PLACE FOR FUTURE REFERENCE

56-VOLT LITHIUM-ION CORDLESS BRUSHLESS STRING TRIMMER — ST1510/ST1510-FC10
SPECIFICATIONS
Voltage 56 V
No-load speed Low speed set: 3000-4800 RPM
High speed set: 4500-5800 RPM
Cutting Mechanism Bump-feed trimmer head
Cutting Line Type 0.095 in.(2.4mm) nylon twist line
Cutting Width 15 in. (38 cm)
Operating Temperature 32°F-104°F(0°C-40°C)
Storage Temperature -4°F-158°F(-20°C-70°C)
Weight (Without battery pack) 7.63 lbs (3.46 kg)
Recommended Cutting Line
PART NAME TYPE MODEL NUMBER
Cutting Line 0.095 in./2.4 mm twist line AL2415S/AL2450S/AL2420P/
AL2420PD
PACKING LIST
PART NAME QUANTITY
String Trimmer 1
Bolt for Locking shaft 1
Guard (with two screws preassembled on the guard) 1
Quick Adjustable Loop-Handle Assembly 1
Hex Wrench 1
Cutting Line 1
Operator’s Manual 1

56-VOLT LITHIUM-ION CORDLESS BRUSHLESS STRING TRIMMER — ST1510/ST1510-FC 11
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.
LOW
1
Loop Handle
Lock-Pole Lever
Hinge
Trimmer Head (Bump Head)
Release Tab
Line-cutting Blade
Guard
Line-Loading Button
Cutting Line
Hex Wrench Ejection Mechanism
Latch
Electric
Contacts
Lock-off Trigger
Switch
Trigger
Rear Handle
Height-Locking Clamp
High/low-speed Switch

56-VOLT LITHIUM-ION CORDLESS BRUSHLESS STRING TRIMMER — ST1510/ST1510-FC12
WARNING: Never operate the tool without the guard rmly in place. The guard
must always be on the tool to protect the user.
LOOP HANDLE
Quickly adjust the loop handle for easy control of the trimmer during cutting.
REAR HANDLE
Ergonomic handle with over mold improves comfort and grip.
SWITCH TRIGGER
Turns the string trimmer On and Off.
LOCK-OFF TRIGGER
Helps to prevent accidental activation of the trigger. It must be depressed before the
Switch trigger can be activated.
HIGH/LOW-SPEED SWTICH
Provides high and low speed ranges for different tasks, as needed.
GUARD
Reduces the risk of injury from foreign objects ung 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.
HEIGHT LOCKING CLAMP
The handle can be quickly adjusted to accommodate any size person, helping to ensure
an ideal, comfortable working height.

56-VOLT LITHIUM-ION CORDLESS BRUSHLESS STRING TRIMMER — ST1510/ST1510-FC 13
TRIMMER HEAD (BUMP HEAD)
Stores the cutting line and releases the cutting line when the head is lightly tapped on
rm ground during operation.
LINE-LOADING BUTTON
Press this button to automatically wind the line into the trimmer head.
HINGE
Connects and locks the two foldable shafts.
BATTERY-RELEASE BUTTON
Releases the battery pack from the tool.
LATCH
Secures the battery pack to the tool.
EJECTION MECHANISM
Aids in battery removal.

56-VOLT LITHIUM-ION CORDLESS BRUSHLESS STRING TRIMMER — ST1510/ST1510-FC14
ASSEMBLY
WARNING: 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.
WARNING: Do not attempt to modify this product or create accessories not
recommended for use with this product. Any such alteration or modication is misuse
and could result in a hazardous condition leading to possibly serious personal injury.
WARNING: Always wear heavy gloves when doing any maintenance on the
blade. Be careful of the blade and protect your hands from being injured by the blade.
WARNING: To prevent accidental starting that could cause serious personal
injury, always remove the battery pack from the tool when assembling parts, making
adjustments, cleaning, or when 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.

56-VOLT LITHIUM-ION CORDLESS BRUSHLESS STRING TRIMMER — ST1510/ST1510-FC 15
UNFOLDING THE SHAFT
WARNING: In order to avoid
pinching your hands or ngers, do not
hold the shaft at the joint.
WARNING: 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 oor and make sure that the
cable is inside the shaft, so that it
will not be pinched when closing
the hinge. Carefully unfold the shaft
until the two holes in the hinge 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
WARNING: 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. Lay the trimmer on the ground or
the oor with the trimmer head
facing upward.
3. Align the two screws, which are
preassembled on the guard, with
the two screw holes in the shaft
(Fig.4), and then tighten them with
the screwdriver (Fig.5).
2
4
3
5

56-VOLT LITHIUM-ION CORDLESS BRUSHLESS STRING TRIMMER — ST1510/ST1510-FC16
MOUNTING AND ADJUSTING THE
LOOP HANDLE
1. Loosen and remove the lock-pole
lever and wing nut from the loop
handle (Fig.6).
2. Push the loop handle onto the shaft
between the Height Locking Collar
and hinge(Fig.7).
3. Insert the clamping block into the
handle slot (Fig.8).
4. Mount the lock pole lever and pre-tighten the wing nut. Make sure that the loop
handle is positioned upwards and points toward the top of the rear handle (Fig.9).
5. Pull up the level of the lock pole so that you can easily move/rotate the loop
handle to where you feel comfortable. (Fig.10).
NOTICE: The loop handle must be only positioned between the height locking clamp
and hinge on the shaft.
6. Engage the lock-pole lever to secure the loop handle in place.
WARNING: The tool cannot be used without the loop handle securely attached.
7 8
Clamping Block
9Lock-Pole Lever
Wing Nut
10 Height-Locking Clamp
Hinge
6
Clamping Block Wing Nut
Lock-Pole
Lever
Loop Handle

56-VOLT LITHIUM-ION CORDLESS BRUSHLESS STRING TRIMMER — ST1510/ST1510-FC 17
ADJUSTING THE TRIMMER
HEIGHT
If the length of the shaft is not suitable for
operation, you can adjust the length of the
shaft with the height-locking clamp.
1. Remove the battery pack from the
trimmer.
2. To adjust the trimmer height, open
the height-locking clamp, and then
slide the shaft up or down to desired length, securing it in place by depressing the
height-locking clamp. (Fig.11.)
NOTICE: The loop handle may require to be readjusted after the trimmer height is
changed.
11
Height-Locking Clamp

56-VOLT LITHIUM-ION CORDLESS BRUSHLESS STRING TRIMMER — ST1510/ST1510-FC18
OPERATION
WARNING: Do not allow familiarity with this product to make you careless.
Remember that a careless fraction of a second is sufcient to inict serious injury.
WARNING: Always wear eye protection that is marked to comply with ANSI
Z87.1. Failure to do so could result in objects being thrown into your eyes and other
possible serious injuries.
WARNING: 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.
WARNING: To prevent serious personal injury, remove the battery from the tool
before servicing, cleaning, changing attachments or removing material from the unit.
APPLICATION
◾You may use this product for the purposes listed below:
◾Trimming grass and weeds from around porches, fences, and decks;
◾Cutting grass that is difcult to reach with a normal lawn mower.
CONNECTING WITH/DISCONNECTING FROM THE BATTERY
WARNING: Always remove the battery pack from the product before 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 rst use.
To install battery pack (Fig. 12)
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.
12
Battery-mounting Slot
Latch

56-VOLT LITHIUM-ION CORDLESS BRUSHLESS STRING TRIMMER — ST1510/ST1510-FC 19
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. 13)
WARNING: 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.
Before each use check for damaged/worn parts
Check the trimmer head, guard, and loop 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 le or replace it with a new blade.
WARNING: 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 instruction.
WARNING: 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 cloths to remove dirt, dust, oil, grease, etc.
13 Press to Release

56-VOLT LITHIUM-ION CORDLESS BRUSHLESS STRING TRIMMER — ST1510/ST1510-FC20
STARTING/STOPPING THE
STRING TRIMMER
To Start
1. Move the lock-off trigger forward
and then press the switch trigger.
The string trimmer will start.
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 (Fig. 14).
NOTICE: The motor runs only when the lock-off trigger is moved forward and switch
trigger is both pressed at the same time.
Speed-Adjustment Function
(Fig.15)
The string trimmer has two speed setting.
Move the high/low speed trigger forward or
backward to choose the low or high speed.
To Stop the string trimmer
Move the string trimmer away from the
cutting area and release the switch trigger
to stop the tool.
WARNING: Always remove the battery pack from the string trimmer during work
breaks and after nishing work.
LOW
14
Switch Trigger
Lock-off Trigger
LOW
15
High/low-Speed Switch