Keep this manual for the safety warnings and precautions, assembly,
Save This Manual
operating, inspection, maintenance and cleaning procedures. Write the product’s serial number in the
back of the manual near the assembly diagram (or month and year of purchase if product has no number).
Keep this manual and the receipt in a safe and dry place for future reference.
40V BATTERY POWERED
STRING TRIMMER
U1GT21000
Visit our website at: http://www.litheli.com
Read this material before using this product.
Failure to do so can result in serious injury.
SAVE THIS MANUAL.
When unpacking, make sure that the product is intact
and undamaged. If any parts are missing or broken,
When using electric gardening appliances, basic safety precautions should always be followed
to reduce the risk of fire, electric shock, and personal injury, including the following:
READ ALL INSTRUCTIONS
Gardening Appliance Safety
1. Avoid Dangerous Environment -
Do not use appliances in damp or wet locations.
2. Do Not Use In Rain.
3. Keep Children Away - All visitors should
be kept at a distance from work area..
Do not wear loose
4. Dress Properly -
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.
5.
Wear ANSI-approved safety goggles,
hard hat and heavy-duty rubber work
gloves.
Use face or dust mask if
operation is dusty.
.
7. Use Right Appliance -
Do not use appliance
for any job except that for which it is intended.
8. Avoid Unintentional Starting -
Do not carry appliance with finger on switch.
9. Don’t grasp the exposed cutting blades or cutting
edges when picking up or holding the appliance
10. Do Not Force Appliance -
It will do the
job better and with less likelihood of injury
at the rate for which it was designed.
11. Do not Overreach -
Keep proper footing and balance at all times.
Watch what you are doing. Use
12. Stay Alert -
common sense. Do not operate appliance when
you are tired.
.
6.
Page 2WWW.LITHELI.COMItem U1GT21000
Wear thick jeans and steel-toed
work boots to help prevent injury
caused by flying debris.
13. 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.
Keep cutting
14. Maintain Appliance With Care -
edge sharp and clean for best performance and
to reduce the risk of injury. Follow instructions
for lubricating and changing accessories. Keep
handles dry, clean, and free from oil and grease.
Before further use of
15 . Check Damaged Parts -
the appliance, 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 a qualified technician
unless indicated elsewhere in this manual.
16. Keep guards in place and in working order..
17 . Keep hands and feet away from cutting area..
18 . Wear full eye protection and protective
clothing.
19. If electrolyte contacts the skin, wash
it off immediately with water..
20. If electrolyte contacts the eyes, flush thoroughly and
immediately with water. Seek medical attention.
21 . Stop working when you feel tired or exhausted.
Make regular breaks to rest..
22. People with pacemakers should consult their
physician(s) before use. Electromagnetic fields in
close proximity to heart pacemaker could cause
pacemaker interference or pacemaker failure.
23. When servicing use only identical
replacement parts.
24. Disconnect Appliance - Remove Battery Pack
when not in use, before servicing, when changing
accessories such as blades, and the like.
25. Carefully follow cutting procedures explained in this manual. They are specifically
planned to reduce risk to the operator..
26. Only replace the line on this appliance with
the line material and diameter of line listed
on the Specifications table. Other materials,
such as wire, rope, or blades can damage the
appliance and be forcefully and dangerously
ejected from the appliance upon breaking.
Lithium Battery Safety Warnings
LITHIUM BATTERIES STORE
ALARGEAMOUNTOFENERGY AND
WILL VENT FIRE OR EXPLODE IF MISTREATED:
1 . Keep
Battery Pack dry.
2. DO NOT DO ANY OF THE FOLLOWING
TO THE BATTERYPACK:
a. Open,
b. Drop,
c. Short-circuit,
Battery Charger Safety
1 . SAVE THESE INSTRUCTIONS - This manual
contains important safety and operating
instruction for battery charger Model U1GT21000.
2. Before using battery charger, read all instructions
and cautionary markings on battery charger,
battery, and product using battery..
d. Puncture,
e. Incinerate,
f. Expose to temperatures greater than 104°F.
3. Charge Battery Pack only according
to its Charger’s instructions..
4. Inspect Battery Pack before every use;
do not use or charge if damaged..
6. Remove or disconnect battery after use,
before servicing, cleaning or removing
material from the gardening appliance..
7. Do not dispose of battery in a fire. The
cell may explode. Check with local codes
for possible disposal instructions.
3. CAUTION - To reduce risk of injury, charge only li-ion
type rechargeable batteries. Other types of batteries
may burst causing personal injury and damage.
4. Do not charge or use appliance in rain, or in wet
locations.
5. Do not use battery-operated appliance in rain.
Item U1GT21000
WWW.LITHELI.COM
8. 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.
9. 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..
Page 3
Vibration Hazard
This appliance vibrates during use.
Repeated or long-term exposure to vibration may
cause temporary or permanent physical injury,
particularly to the hands, arms and shoulders.
To reduce the risk of vibration-related injury:
1 . Anyone using vibrating appliances regularly or for
an extended period should first be examined by
a doctor and then have regular medical checkups
to ensure medical problems are not being caused
or worsened from use. Pregnant women or people
who have impaired blood circulation to the hand,
past hand injuries, nervous system disorders,
diabetes, or Raynaud’s Disease should not use this
appliance. If you feel any symptoms related to
vibration (such as tingling, numbness, and white
or blue fingers), seek medical advice as soon as
possible.
.
General Safety
1 . The spool will continue to rotate for a few
seconds after use. Allow it to stop completely
and remove Battery Pack before putting the
appliance down, making any adjustments, or
servicing the appliance.
2. Do not use in rain, snow, sprinklers, or wet grass..
Do not rinse off the Trimmer..
3. Use only during daylight hours..
4. Carefully inspect the spool housing and guard
before inserting Battery Pack in the Trimmer. Do
not use Trimmer if any part is cracked or damaged.
2. Do not smoke during use..Nicotine reduces
the blood supply to the hands and fingers,
increasing the risk of vibration-related injury..
3. Wear suitable gloves to reduce the
vibration effects on the user.
4. Use appliances with the lowest vibration when
there is a choice between different processes.
5. Include vibration-free periods each day of work.
6. Grip appliance as lightly as possible
(while still keeping safe control of it).
Let the appliance do the work.
7. To reduce vibration, maintain the appliance
as explained in this manual. If any abnormal
vibration occurs, stop use immediately.
5. Do not use appliance for other than intended use.
6. Maintain labels and nameplates on the appliance.
These carry important safety information.
If unreadable or missing, contact Litheli for a
replacement.
7. The warnings, precautions, and instructions
discussed in this instruction manual cannot
cover all possible conditions and situations
that may occur. It must be understood by the
operator that common sense and caution are
factors which cannot be built into this product,
but must be supplied by the operator.
SAVE THESE INSTRUCTIONS.
Page 4
WWW.LITHELI.COM
Item U1GT21000
Specifications
Charger Input Rating
Charger Output Rating
Battery Rating
Battery Type
No Load Speed
Replacement Line Type
Grounding
TO PREVENT ELECTRIC SHOCK AND DEATH FROM INCORRECTGROUNDING:
Check with a qualified electrician if you are in doubt as to whether the outlet is properly
grounded. Do not modify the power cord plug provided with the charger. Do not use the charger
if the power cord or plug is damaged. If damaged, have it repaired by a service facility before
use. If the plug will not fit the outlet, have a proper outlet installed by a qualified electrician.
ExtensionCords
NOTE :
Extension cords must not be used with this item’s Charger..
120VAC / 60Hz
36VDC / 3.3A
40VDC / 2.5Ah / 90Wh
40V Litheli Li-Ion
7500rpm 10%
0.062" Nylon
Symbology
Double Insulated
V
~
A
n0 xxxx/min.
Volts
Alternating Current
Amperes
No Load Revolutions per Minute (RPM)
WARNING marking concerning Risk
of Eye Injury. Wear ANSI-approved
safety goggles with side shields.
Do not throw the batteries in the
household waste, fire or water.
Read the manual before
set-up and/or use.
WARNING marking
concerning Risk of Fire.
Do not cover Charger
ventilation ducts.
Charge on fireproof surface only.
WARNING marking concerning
Risk of Electric Shock.
Properly connect Charger’s power
cord to appropriate outlet.
WARNING marking concerning
Risk of Explosion.
Do not puncture, short, or open
battery packs and do not charge
damaged battery packs.
Charge level indication.
Indication of the noise level
LWA in dB.
Do not expose the battery to sunlight
for a long time and do not place it on
radiators (max. 45 ° C).
Dispose of the batteries at a collection point
for old batteries, from where they are taken
to environmentally friendly recycling.
Item U1GT21000
WWW.LITHELI.COM
Charge level indication.
Page 5
Setup - Before use:
Read the ENTIRE IMPORTANT SAFETY INFORMATION section at the beginning of this
manual including all text under subheadings therein before set up or this product.
Functions
Spool Storage
Compartment
Trigger
Trigger
Safety Lock
Auxiliary
Handle
Extension
Lock
Guard
Line
Cutter
Extension
Tube
Edger/Trimmer
Button
Head Angle
Button
Edger
Wheels
Spool
Housing
Page 6
Edge Guide not shown.
WWW.LITHELI.COM
Item U1GT21000
Charging the Battery Pack
NOTE : The Battery Pack comes partly charged.
Charge the Battery Pack prior to first use, ideally at least 60 minutes.
Always pull out the Power Plug of the Charger
from the mains before removing or connecting the Battery Pack to the charger.
Never charge the Battery Pack when the ambient temperature is below 10 °C or above 40 °C.
Rest the Charger for at least 15 minutes between successive charging sessions.
If no Battery Pack is inserted into the Charger and the
charger is connected to mains, the Charging Status LED flashes green.
1 .
Align the Battery Pack to the rails of the
Charger and slide it in. Ensure it clicks
noticeably in place.
2.
Connect the Power Plug of the Charger with
the mains. The Charging Status LED lights
up red. The continuously lit green
Charging Status LED indicates
that the charging process is complete.
3.
Disconnect the Power Plug of the
Charger from the mains and remove the
Battery Pack from the charger.
4.
Attach the Battery Pack back to the
product (see “Installing and Removing
Battery Pack”).
Charging status LEDs
Green LED flashes
without battery pack
Green LED lights up
with battery pack
Red LED lights up with
battery pack
Charger ready
Battery pack fully
charged
Battery pack charging
Power Cord
with Plug
Rapid Battery Charger
Charging
Status
LED – Green
Charging
Status
LED – Red
Battery
Pack
Connector
Red and green LEDs
flashing
Red and green LEDs
continuously lit
Battery pack defect
Battery pack too cold
or warm
Page 7WWW.LITHELI.COMItem U1GT21000
Checking the Battery Charging Level
NOTE :
Press the Battery Level Button
to check the charging level of the Battery Pack. The charging level
will be shown on the Battery Level Indication Lights.
Charge the Battery Pack before
operation when it is at 25% or low battery charging level.
LED status
Charging level
Charging level too low
Between 5% and 50%.
Between 50% and 80%.
More than 80%.
Assembly Instructions
Battery Pack
Release
Button
Battery Level
Indication Lights
Battery
Level Button
Read the ENTIRE IMPORTANT SAFETY INFORMATION section at the beginning of this
manual including all text under subheadings therein before set up or use of this product.
TO PREVENT SERIOUS INJURY FROM ACCIDENTAL OPERATION:
Release Trigger of the appliance before performing any procedure in this section.
NOTE :
For additional information regarding the parts listed in the following pages,
refer to the Assembly Diagram near the end of this manual.
Install Guard
WARNING! TO PREVENT SERIOUS
INJURY FROM FLYING DEBRIS: Install the
guard only in the orientation shown.
guard
1 . Attach Guard to bottom of String
Trimmer with two included Screws.
2. Remove protective tape covering Line Cutter. .
NOTE : Line Cutter is set to 12" cutting width..
3. To change the spool, remove Line Cutter
Screw, rotate Line Cutter, then replace Screw..
Protective
Tape
Guard
Line
Cutter
Line
Cutter
Screw
Screws
Page 8
WWW.LITHELI.COM
Item U1GT21000
Install Auxiliary Handle
1 . Slide Auxiliary Handle up on to Auxiliary
Handle Bracket until it clicks into place.
2. To change Auxiliary Handle position, move
Auxiliary Handle Lock up, change handle position,
then move Auxiliary Handle Lock down.
Install Edge Guide
1 . Spread Edge Guide arms apart, then
push ends into holes on housing..
Auxiliary
Handle
Auxiliary
Handle
Bracket
Auxiliary
Handle Lock
Hole
Arm
2. Use the Edge Guide to limit striking
objects with the Line while trimming
nearby.
3. Flip the Edge Guide up out of
the way when not in use.
Install Edger Wheels
1 . Slide Edger Wheels into slot. Push down
until Edger Wheels lock into place.
2. Remove Edger Wheels by pushing Tab
and pulling up on Edger Wheels.
.
Edge
Guide
Edger
Wheels
Item U1GT21000
WWW.LITHELI.COM
Tab
Slot
Page 9
Operating Instructions
Read the ENTIRE IMPORTANT SAFETY INFORMATION section at the beginning of this
manual including all text under subheadings therein before set up or use of this product.
TO PREVENT SERIOUS INJURY:
Before operating the gardening appliance, put on ANSI-approved safety goggles, closed-toe work
boots, long pants, and other safety gear. Safety goggles and other safety gear are purchased by
yourself.
TO PREVENT SERIOUS INJURY AND PROPERTY DAMAGE:
Inspect the area before using the String Trimmer. Remove all hard objects from work area.
Use both hands when operating Trimmer.
TO PREVENT SERIOUS INJURY FROM ACCIDENTAL OPERATION:
Make sure that the Power Switch/Trigger is in the off-position and
remove Battery Pack before setting up the appliance.
Charging Battery Pack
1 . Place Battery Charger on a dry, flat,
fireproof surface indoors.
NOTE : Allow battery to cool completely before charging.
Do not charge a cracked,
2. Examine Battery Pack.
open, or leaking Battery Pack, or charge a
non-recommended type of Battery Pack.
3. Battery Pack is designed to fit this Charger
specifically. If Battery Pack does not fit
Charger properly, do not try to insert it. Do
not force Battery Pack into the Charger.
4. Plug Charger into a grounded, 120VAC, 60Hz
receptacle. Green LED will blink, showing
that power is supplied to the charger.
Slide Battery Pack onto Charger. Red LED
5.
will light continuously while charging.
NOTE : A fully discharged Battery Pack will
take about 1 hour to fully charge.
While charging, Battery Pack and
NOTE :
Charger may become warm to the touch and the
Charger′s fan may come on. This is normal.
6. Green LED will light continuously when
Battery Pack is charged. Unplug Charger
and remove Battery Pack when finished.
7. Allow Battery Pack to cool completely before
use.
Installing and Removing Battery Pack
1 . To install: Slide Battery Pack into slot on back
of String Trimmer until it clicks into place.
2. To remove: Press both Battery Pack Release
Buttons and pull Battery Pack out of slot.
.
Battery Pack
Release
Buttons
Page 10
WWW.LITHELI.COM
Battery
Pack
Item U1GT21000
Automatic Line Feeder
NOTICE:
DO NOT BUMP SPOOL HOUSING ON GROUND.
This string trimmer feeds Line
automatically when stopping.
1 . After each operation, when Trigger is
released, Line will be fed out and cut
to proper length by Line Cutter.
To prevent damage to Trimmer,
Trimmer Operation
1 . Remove Battery Pack.
2. Adjust Auxiliary Handle as necessary.
3. Adjust length as necessary by turning
Extension Lock clockwise, pulling Extension
Tube out to desired length, then turning
Extension Lock Counterclockwise securely.
4. Adjust head angle by pushing Head Angle
Button, moving head until desired angle
is achieved, then releasing button.
5. Move Edge Guide down until it locks into place.
6. Install fully charged Battery Pack.
2. If Trimmer is not cutting correctly, Spool may
be tangled. Remove Spool and rewind Line.
3. To advance Line by hand, push Line Outlet Button
on Spool Housing and pull out Line at the
same time. Approximately 1/4" of Line can be
pulled out each time the button is pushed.
7. Holding Trimmer with both hands, press
Trigger Safety Lock, then press Trigger.
8. DO NOT REST TRIMMER ON GROUND.
9. Do not force the Trimmer. Use the
tip of the Line to do the cutting.
10. Release Trigger when done.
11 . When finished, to prevent accidents:
• Remove battery pack..
• Wipe external surfaces of the appliance
with clean cloth. Store in an indoor
dry area out of reach of children.
NOTICE:
To prevent damage to tool or property,
avoid contact with fences, trees, shrubs and the like.
Edger Operation
1 . Remove Battery Pack.
2. Push Edger/Trimmer Button, then rotate
head to the left until it clicks into place.
3. Adjust Auxiliary Handle as necessary..
4. Adjust length as necessary by turning
Extension Lock clockwise, pulling Extension
Tube out to desired length, then turning
Extension Lock Counterclockwise securely.
5. Adjust head angle by pushing Head Angle
Button, moving head until desired angle
is achieved, then releasing button..
6. Install fully charged Battery Pack.
NOTICE: To prevent damage to tool or property
avoid contact with fences, trees, shrubs and the like.
7. Rest Trimmer on Edger Wheels.
8. Holding Trimmer with both hands, press Trigger
Safety Lock, then press Trigger.
9. Do not force the Trimmer. Use the
tip of the Line to do the cutting.
10. Release Trigger when done.
11 . When finished, to prevent accidents:
• Remove battery pack.
• Wipe external surfaces of the appliance
with clean cloth. Store in an indoor
dry area out of reach of children.
Item U1GT21000
WWW.LITHELI.COM
Page 11
User-Maintenance and Storage
Procedures not specifically explained in this manual must
be performed only by a qualified technician.
TO PREVENT SERIOUS INJURY FROM ACCIDENTAL OPERATION OR ELECTRIC SHOCK:
Release the Trigger and remove the Battery Pack before performing
any inspection, maintenance, or cleaning procedures.
TO PREVENT SERIOUS INJURY FROM APPLIANCE FAILURE:
Do not use damaged equipment. If abnormal noise or vibration
occurs, have the problem corrected before further use.
Cleaning, Maintenance, and Lubrication
inspect the general
1 . BEFORE EACH USE,
condition of the appliance. Check for:
• loose hardware,
• misalignment or binding of moving parts,
• cracked or broken parts,
• damaged electrical wiring,
• any other condition that may
affect its safe operation.
Replacing Spool
Replacement Spool is located
NOTE :
in Spool Storage Compartment.
1 . Remove Battery Pack.
2. Press tabs on Spool Cover, remove Spool Cover,
then remove Spool from Spool Housing.
3. Remove old line from Spool.
4. Clean interior of Spool Housing with soft cloth.
5. Replace Spool, insert Line through Line Outlet in
Spool Housing and pull line out past Line Cutter.
Remove Battery Pack and wipe
2. AFTER USE,
external surfaces of the appliance with clean cloth.
3. Li-Ion BATTERY MUST BE RECYCLED OR
DISPOSED OF PROPERLY.
Do not short, incinerate or open battery.
4. Store Battery Pack, Charger, and tool in dry, indoor
area out of reach of children and away from metal
objects (i.e., paperclips, coins) to prevent shorting.
5. All parts are permanently lubricated.
Do not use additional lubrication.
Line
Cutter
Tabs
.
Line
Outlet
Spool
Housing
Spool
Spool
Cover
6. Replace Spool Cover.
Page 12
WWW.LITHELI.COM
Item U1GT21000
Replacing Nylon Line
TO PREVENT SERIOUS INJURY:
Only replace the line on this appliance with the line material and diameter of line listed on
the Specifications table. Other materials, such as wire, rope, or blades can damage the
appliance and be forcefully and dangerously ejected from the appliance upon breaking.
1 . Remove Battery Pack.
2. Press tabs on Spool Cover, remove Spool Cover,
then remove Spool from Spool Housing.
3. Remove old line from Spool.
4. Clean interior of Spool Housing with soft cloth.
Line
Outlet
Spool
Housing
Spool
Spool
Cover
Line
Cutter
Tabs
5. Insert end of Nylon Line (up to 16 feet)
into Line Insertion Hole.
6. Wrap Line onto Spool in neat, straight rows, under
tension, following arrow direction on top of Spool.
Line
Nylon
Line
7. Replace Spool, insert Line through Line Outlet in
Spool Housing and pull line out past Line Cutter.
8. Replace Spool Cover.
Insertion
Hole
Item U1GT21000
WWW.LITHELI.COM
Page 13
Parts List and Diagram
PLEASE READ THE FOLLOWING CAREFULLY
THE MANUFACTURER AND/OR DISTRIBUTOR HAS PROVIDED THE PARTS LIST AND ASSEMBLY DIAGRAM
IN THIS MANUAL AS A REFERENCE TOOL ONLY. NEITHER THE MANUFACTURER OR DISTRIBUTOR
MAKES ANY REPRESENTATION OR WARRANTY OF ANY KIND TO THE BUYER THAT HE OR SHE IS
QUALIFIED TO MAKE ANY REPAIRS TO THE PRODUCT, OR THAT HE OR SHE IS QUALIFIED TO REPLACE
ANY PARTS OF THE PRODUCT. IN FACT, THE MANUFACTURER AND/OR DISTRIBUTOR EXPRESSLY
STATES THAT ALL REPAIRS AND PARTS REPLACEMENTS SHOULD BE UNDERTAKEN BY CERTIFIED AND
LICENSED TECHNICIANS, AND NOT BY THE BUYER. THE BUYER ASSUMES ALL RISK AND LIABILITY
ARISING OUT OF HIS OR HER REPAIRS TO THE ORIGINAL PRODUCT OR REPLACEMENT PARTS
THERETO, OR ARISING OUT OF HIS OR HER INSTALLATION OF REPLACEMENT PARTS THERETO.
NOTE : If product has no serial number, record month and year of purchase instead..
NOTE : Some parts are listed and shown for illustration purposes only,
and are not available individually as replacement parts.
Page 14
WWW.LITHELI.COM
Item U1GT21000
Assembly Diagram
Item U1GT21000
WWW.LITHELI.COM
Page 15
Warranty
90-Day Money Back
You May Return Your Product for A Full Refund Within The First 90 Days of Your Purchase.
3-Year Battery and Charger Warranty
Against Defects in Workmanship and Materials.
Battery and Charger Must Be Used and Maintained in Accordance with The Manual of The
Operator's Instructions and Regulations.
5-Year Tool Warranty
Against Defects in Materials, Parts or Workmanship.
Litheli at Its Own Discretion Will Repair or Replace Any and All Parts Found To Be Defective.
All Units Must Be Used and Maintained in Accordance with The Directions and Regulations in The
Operator's Manual.
Returning The Product
Contact Us at www.litheli.com for The Return Address, We Will Issue Replace/Refund Upon Receiving
Your Return.
Need An Extra Copy of The Operator's Manual? Visit www.litheli.com to Download it.
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