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261103C-B
tM
CORDLESS PRUNER
70857
20v LITHIUM-ION
Owner’s Manual & Safety Instructions
Save This Manual Keep this manual for the safety warnings and precautions, assembly,
operating, inspection, maintenance and cleaning procedures. Write the product’s date code in the back of
the manual (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. 26a
When unpacking, make sure that the product is intact
and undamaged. If any parts are missing or broken,
please call 1-800-444-3353 as soon as possible.
Copyright
©
2026 by Harbor Freight Tools
®
. All rights reserved.
No portion of this manual or any artwork contained herein may be reproduced in
any shape or form without the express written consent of Harbor Freight Tools.
Diagrams within this manual may not be drawn proportionally. Due to continuing
improvements, actual product may differ slightly from the product described herein.
Tools required for assembly and service may not be included.
read this material before using this product.
Failure to do so can result in serious injury.
SaVe tHiS ManUaL.
Page 2 For technical questions, please call 1-800-444-3353.
Item 70857
SaFety OperatiOn MaintenanceSetUp
table of contents
Safety ......................................................... 2
Specifications ............................................. 5
Setup .......................................................... 5
Operation .................................................... 6
Maintenance ............................................... 7
Parts List and Diagram .............................. 10
Warranty .................................................... 12
WarninG SyMBOLS anD DeFinitiOnS
This is the safety alert symbol. It is used to alert you to potential
personal injury hazards. Obey all safety messages that
follow this symbol to avoid possible injury or death.
Indicates a hazardous situation which, if not avoided,
will result in death or serious injury.
Indicates a hazardous situation which, if not avoided,
could result in death or serious injury.
Indicates a hazardous situation which, if not avoided,
could result in minor or moderate injury.
Addresses practices not related to personal injury.
iMpOrtant SaFety inStrUctiOnS
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 - Don’t use
appliances in damp or wet locations.
2. Don’t Use In Rain.
3. Keep Children Away - All visitors should
be kept at a distance from work area.
4. 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.
5. Use Safety Glasses - Always use face
or dust mask if operation is dusty.
6. Use Right Appliance - Do not use appliance for
any job except that for which it is intended.
7. Avoid Unintentional Starting - Don’t carry
appliance with finger on switch.
8. Don’t grasp the exposed cutting blades or cutting
edges when picking up or holding the appliance.
9. Don’t Force Appliance - It will do the job
better and with less likelihood of a risk of
injury at the rate for which it was designed.
10. Don’t Overreach - Keep proper footing
and balance at all times.
11. Stay Alert - Watch what you are doing.
Use common sense. Do not operate
appliance when you are tired.
12. 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.
13. Maintain Appliance With Care - Keep cutting
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.
Page 3For technical questions, please call 1-800-444-3353.
Item 70857
SaFetyOperatiOnMaintenance SetUp
14. Check Damaged Parts - Before further use
of 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.
pruning Shears Safety
1. Keep hands away from Blades.
2. When servicing use only identical
replacement parts.
3. Carefully follow cutting procedures explained
in this manual. They are specifically
planned to reduce risk to the operator.
4. Maintain labels and nameplates on the appliance.
These carry important safety information.
If unreadable or missing, contact
Harbor Freight Tools for a replacement.
personal Safety
1. 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.
2. 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.
Battery tool use and care
1. prevent unintentional starting. Ensure the
switch is in the off-position before connecting
to battery pack, picking up or carrying the
power tool. Carrying the power tool with your
finger on the switch or energizing power tool
that have the switch on invites accidents.
2. Disconnect the battery pack from the
power tool before making any adjustments,
changing accessories, or storing power
tool. Such preventive safety measures reduce
the risk of starting the power tool accidentally.
3. recharge only with the charger specified by
the manufacturer. A charger that is suitable
for one type of battery pack may create a risk
of fire when used with another battery pack.
4. Use power tools only with specifically
designated battery packs. Use of any other
battery packs may create a risk of injury and fire.
5. 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 fire.
6. Under abusive conditions, liquid may be
ejected from the battery; avoid contact.
If contact accidentally occurs, flush with
water. If liquid contacts eyes, additionally
seek medical help. Liquid ejected from the
battery may cause irritation or burns.
7. Do not use a battery pack or power tool that
is damaged or modified. Damaged or modified
batteries may exhibit unpredictable behavior
resulting in fire, explosion or risk of injury.
8. Do not expose a battery pack or power tool to
fire or excessive temperature. Exposure to fire
or temperature above 140°F may cause explosion.
9. Follow all charging instructions and do
not charge the battery pack or power tool
outside of the temperature range specified
in the instructions. Charging improperly or at
temperatures outside of the specified range may
damage the battery and increase the risk of fire.
10. Have servicing performed by a qualified
repair person using only identical
replacement parts. This will ensure that
the safety of the product is maintained.
11. Do not modify or attempt to repair the power
tool or the battery pack except as indicated
in the instructions for use and care.
Page 4 For technical questions, please call 1-800-444-3353.
Item 70857
SaFety OperatiOn MaintenanceSetUp
12. The battery Charger gets hot during
use. The Charger’s heat can build up to
unsafe levels and create a fire hazard if
it does not receive adequate ventilation,
due to an electrical fault, or if it is used in a
hot environment. Do not place the Charger on a
flammable surface. Do not obstruct any vents on
the Charger. especially avoid placing the
charger on carpets and rugs; they are not only
flammable, but they also obstruct vents under
the charger. Place the Charger on a stable, solid,
nonflammable surface (such as a stable metal
workbench or concrete floor) at least 1 foot away
from all flammable objects, such as drapes or walls.
Keep a fire extinguisher and a smoke detector in
the area. Frequently monitor the Charger and
Battery Pack while charging.
Lithium Battery Safety Warnings
LitHiUM BatterieS StOre a
LarGe aMOUnt OF enerGy
anD WiLL Vent Fire Or
eXpLODe iF MiStreateD:
1. Keep Battery pack dry.
2. DO nOt DO any OF tHe FOLLOWinG
tO tHe Battery pacK:
a. Open,
b. Drop,
c. Short-circuit,
d. puncture,
e. incinerate, or
f. expose to temperatures greater than 140°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.
Vibration Hazard
This tool 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 tools regularly or for an
extended period should first be examined by a
doctor and then have regular medical check-
ups 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.
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.
SaVe tHeSe inStrUctiOnS.
Grounding
tO preVent eLectric SHOcK anD DeatH FrOM incOrrect GrOUnDinG:
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.
Page 5For technical questions, please call 1-800-444-3353.
Item 70857
SaFetyOperatiOnMaintenance SetUp
extension cords
note: Extension cords must not be used with this item’s Charger.
Symbology
V
Volts
Direct Current
a
Amperes
n
0
xxxx/min.
No Load Revolutions
per Minute (RPM)
WARNING marking concerning Risk
of Eye Injury. Wear ANSI-approved
safety goggles with side shields.
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.
WARNING marking concerning
Risk of Amputation.
Keep hands away from Blades.
Specifications
Battery Type Bauer 20V Li-Ion
Charger Type Bauer 20V Li-Ion
Max Cutting Diameter 1.1″
Max Opening 1.7″
Set Up instructions
read the entire iMpOrtant SaFety inStrUctiOnS section at the beginning of this manual
including all text under subheadings therein before set up or use of this product.
note: For additional information regarding the parts listed in the following
pages, refer to Parts List and Diagram on page 10.
Functions
Handle
trigger
trigger
Lockout
power
Button
Work
Light
power
indicator
Fixed
Blade
Shear
Blade
Sheath
Page 6 For technical questions, please call 1-800-444-3353.
Item 70857
SaFety OperatiOn MaintenanceSetUp
Operating instructions
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:
Before operating the gardening appliance, put on anSi-approved
safety goggles and gloves (sold separately).
charging Battery pack
Charge Battery before using this tool. Follow instructions included with Battery Charger.
Workpiece and Work area Set Up
1. Designate a work area that is clean and well lit.
The work area must not allow access by children
or pets to prevent distraction and injury.
2. Check the trimming area for foreign objects,
e.g. wire fences, debris, and hidden
wiring. Remove all decorations, lighting
fixtures, and cords from area to be cut.
3. There must not be objects, such as utility lines,
nearby that will present a hazard while working.
General Operation
WarninG! tO preVent SeriOUS
inJUry, riSK OF aMpUtatiOn: Keep
hands away from Blades.
1. Before operating the Pruner, put on
ANSI-approved safety goggles and
other safety gear. Safety goggles and
other safety gear are sold separately.
2. Make sure that the Trigger is in the off-position,
then attach a fully charged Battery Pack.
3. Squeeze top and bottom of Sheath and remove it.
4. Press Power Button; tool will beep twice.
Power Indicator and Work Light will light up.
5. Press Trigger Lockout forward, then
squeeze Trigger to cut branch. Release
Trigger to open Blades.
trigger
trigger
Lockout
note: Do not cut branches or stems
larger in diameter than 1.1″.
nOtice; tO preVent prOperty DaMaGe:
Do not contact any chain-link or wire
fence; they may damage the Blades.
6. Turn tool off by pressing and holding
Trigger then pressing Power Button.
note: If tool is idle for one minute,
tool will beep and turn off.
WarninG! tO preVent SeriOUS inJUry:
Wait for the Blade to stop completely before putting
down the Pruner. The Blade will briefly keep
moving even after the Trigger has been released.
7. Cover Blades with Sheath.
8. To prevent accidents, turn off the tool and
remove its Battery Pack after use. Clean, then
store the tool indoors out of children’s reach.
Page 7For technical questions, please call 1-800-444-3353.
Item 70857
SaFetyOperatiOnMaintenance SetUp
Maintenance and Servicing
procedures not specifically explained in this manual must
be performed only by a qualified technician.
tO preVent SeriOUS inJUry FrOM acciDentaL OperatiOn:
Make sure that the trigger is in the off-position and remove the
Battery pack before performing any procedure in this section.
tO preVent SeriOUS inJUry FrOM tOOL FaiLUre:
Do not use damaged equipment. if abnormal noise or vibration
occurs, have the problem corrected before further use.
cleaning, Maintenance, and Lubrication
1. BeFOre eacH USe, inspect the general
condition of the tool. Check for:
• leaking, swollen, or cracked battery pack,
• loose hardware,
• misalignment or binding of moving parts,
• cracked or broken parts, and
• any other condition that may
affect its safe operation.
2. aFter USe, clean external surfaces
of the appliance with clean, moist cloth.
Clean Blades with isopropyl alcohol on
a clean cloth (both sold separately).
3. periODicaLLy, Lubricate Blades (see
Lubricating Blades on page 7.)
4. Li-Ion BATTERY MUST BE RECYCLED OR
DISPOSED OF PROPERLY.
Do not short, incinerate or open battery.
5. Disconnect battery pack and 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.
Lubricating Blades
1. Make sure that the Trigger is in the
off-position, then attach the Battery Pack.
2. Press Power Button to open Blades,
then remove Battery Pack.
3. Clean Blades with isopropyl
alcohol on a clean cloth.
4. Wipe Blades with light machine oil on a
clean cloth (both sold separately) and add
2-3 drops of oil to Lubrication Hole.
5. Make sure that the Trigger is in the
off-position, then attach the Battery Pack.
6. Press Power Button. Open and close Blades
several times to evenly disperse the oil.
7. Turn tool off by pressing and holding Trigger then
pressing Power Button. Remove Battery Pack.
8. Use clean cloth to remove excess
oil. Replace Sheath.
Lubrication
Hole
Page 8 For technical questions, please call 1-800-444-3353.
Item 70857
SaFety OperatiOn MaintenanceSetUp
adjusting Blade tension
1. Remove Sheath
2. Remove Lock Screw and Pawl
with included Wrench.
3. Tighten Tension Nut with Wrench until Blades
are flush and snug against each other.
4. Replace Pawl and Lock Screw. Replace Sheath.
tension nut
pawl
Lock Screw
Sharpening or replacing Blades
WarninG! tO preVent SeriOUS inJUry:
Wear heavy-duty gloves when handling Blades.
1. Have the Blades professionally sharpened OR,
2. Replace the Blades:
a. Remove Sheath.
b. Remove Screws and Blade Cover.
Blade cover
Screws
c. Remove Lock Screw, Pawl and
Tension Nut with included Wrench.
d. Remove Bolt, Swing Gear, Shear Blade,
Felt Washer, and Fixed Blade.
e. Lay Pruner on its side and place
Fixed Blade into recessed.
f. Place Bolt down with shank facing up, then
place Swing Gear, Shear Blade and Felt Washer
on shank, aligning hole in Blade with pin in Gear.
g. Insert Bolt through Fixed Blade, aligning flat
sides on Bolt with flat sides in bolt hole.
h. Replace Tension Nut and tighten
with Wrench until Blades are flush
and snug against each other.
i. Replace Pawl and Lock Screw.
j. Replace Blade Cover, tightening
Screws in a criss-cross pattern: top-left,
bottom-right, then top-right, bottom-left.
k. Replace Sheath.
pin
Swing
Gear
Bolt
Shear
Blade
Felt
Washer
tension
nut
pawl Lock
Screw
Fixed
Blade
Page 9For technical questions, please call 1-800-444-3353.
Item 70857
SaFetyOperatiOnMaintenance SetUp
troubleshooting
problem possible causes Likely Solutions
Tool will not start. 1. Battery Pack not properly
connected.
2. Battery Pack not properly
charged.
3. Battery Pack stopped working.
4. Internal damage or wear.
(bearings, for example.)
1. Remove Battery Pack, make sure there are no
obstructions, reinsert the Battery Pack according
to its shape (it should only fit one way), and press
firmly until the Battery Pack locks in place.
2. Make sure Charger is connected and
operating properly. Give enough time for
Battery Pack to recharge properly.
3. Dispose of old Battery Pack
properly or recycle. Replace Battery Pack.
4. Have qualified technician service tool.
Tool operates slowly. 1. Forcing tool to work too fast.
2. Battery Pack wearing out.
1. Allow tool to work at its own rate.
2. Dispose of old Battery Pack
properly or recycle. Replace Battery Pack.
Performance
decreases over time.
1. Internal damage or wear.
(bearings, for example.)
2. Battery Pack wearing out.
1. Have qualified technician service tool.
2. Dispose of old Battery Pack
properly or recycle. Replace Battery Pack.
Excessive noise
or rattling.
Internal damage or wear.
(bearings, for example.)
Have qualified technician service tool.
Overheating. Forcing tool to work too fast. Allow tool to work at its own rate.
Tool stops
unexpectedly
1. Battery Pack not properly
charged.
2. Battery Pack stopped working.
3. Blades are stuck into vegetation.
1. Make sure Charger is connected and
operating properly. Give enough time for
Battery Pack to recharge properly.
2. Dispose of old Battery Pack
properly or recycle. Replace Battery Pack.
3. Release Trigger; remove Blades from vegetation.
Poor cut quality 1. Loose Blades.
2. Dull / worn Blades.
1. Adjust Blade tension (see Adjusting
Blade Tension on page 8.)
2. Sharpen or replace Blades (see Sharpening
or Replacing Blades on page 8.)
Follow all safety precautions whenever diagnosing or servicing the tool.
Disconnect Battery pack and charger power supply before service.
Page 10 For technical questions, please call 1-800-444-3353.
Item 70857
SaFety OperatiOn MaintenanceSetUp
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.
parts List
part Description Qty
1 M8x1 Tension Nut 1
2 M5x14 Lock Screw 1
3 Pawl 1
4 Bracket 1
5 Fixed Blade 1
6 Felt Washer 1
7 Shear Blade 1
8 Swing Gear 1
9 Bolt 1
10 Magnet 2
11 M2.5x6 Screw 1
12 Bevel Gear Shaft 1
13 Bearing 3
14 Retaining Ring Ø20mm 1
15 3rd Stage Planetary Carrier 1
16 Planetary Gear 9
17 Planetary Carrier 2
18 Internal Gear Ring 1
19 Motor Gear 1
part Description Qty
20 Motor 1
21 Left Housing 1
22 PCB Assembly 1
23 Trigger 1
24 Knurled Cylindrical Pin 1
25 Spring 1
26 Trigger Lockout 1
27 Torsion Spring 1
28 Terminal 1
29 Power Button 1
30 LED Cover 1
31 Right Housing 1
32 Blade Cover 1
33 ST2.9x20-H-F Screw 4
34 ST2.9x14-H-F Screw 6
35 Sheath 1
36 Wrench 1
37 Micro Switch 1
record product’s Date code Here:
note: if product has no date code, 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. Refer to UPC 193175516008.
Page 11For technical questions, please call 1-800-444-3353.
Item 70857
SaFetyOperatiOnMaintenance SetUp
assembly Diagram
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
10
25
26
27
28
29
30
31
32
33
34
35
36
37
17
16
16
Limited 90 Day Warranty
Harbor Freight Tools Co. makes every effort to assure that its products meet high quality and durability
standards, and warrants to the original purchaser that this product is free from defects in materials
and workmanship for the period of 90 days from the date of purchase. This warranty does not apply to
damage due directly or indirectly, to misuse, abuse, negligence or accidents, repairs or alterations outside
our facilities, criminal activity, improper installation, normal wear and tear, or to lack of maintenance.
We shall in no event be liable for death, injuries to persons or property, or for incidental, contingent,
special or consequential damages arising from the use of our product. Some states do not allow the
exclusion or limitation of incidental or consequential damages, so the above limitation of exclusion
may not apply to you. THIS WARRANTY IS EXPRESSLY IN LIEU OF ALL OTHER WARRANTIES,
EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS.
To take advantage of this warranty, the product or part must be returned to us with transportation charges
prepaid. Proof of purchase date and an explanation of the complaint must accompany the merchandise.
If our inspection verifies the defect, we will either repair or replace the product at our election or we may
elect to refund the purchase price if we cannot readily and quickly provide you with a replacement. We will
return repaired products at our expense, but if we determine there is no defect, or that the defect resulted
from causes not within the scope of our warranty, then you must bear the cost of returning the product.
This warranty gives you specific legal rights and you may also have other rights which vary from state to state.
tM
26677 agoura road • calabasas, ca 91302 • 1-800-444-3353
