DeWalt DCHT820 Instruction Manual

DCHT820 20V Max* Lithium Hedge Trimmer
Taille-haie au lithium-ion de 20 V max.* DCHT820
Cortasetos con batería de iones de litio de 20 V Máx* DCHT820

INSTRUCTION MANUAL
GUIDE D'UTILISATION
MANUAL DE INSTRUCCIONES

INSTRUCTIVO DE OPERACIÓN, CENTROS DE SERVICIO Y PÓLIZA DE
GARANTÍA. ADVERTENCIA: LÉASE ESTE INSTRUCTIVO ANTES DE
USAR EL PRODUCTO.

If you have questions or comments, contact us.

Pour toute question ou tout commentaire, nous contacter.

Si tiene dudas o comentarios, contáctenos.

1-800-4-DeWALT • www.dewalt.com

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English

Denitions: Safety Guidelines

The definitions below describe the level of severity for each signal
word. Please read the manual and pay attention to these symbols.

DANGER: Indicates an imminently hazardous situation

which, if not avoided, will result in death or serious injury.

WARNING: Indicates a potentially hazardous situation which,

if not avoided, could result in death or serious injury.

CAUTION: Indicates a potentially hazardous situation which, if

not avoided, may result in minor or moderate injury.
NOTICE: Indicates a practice not related to personal injury

which, if not avoided, may result in property damage.

IF YOU HAVE ANY QUESTIONS OR COMMENTS ABOUT THIS OR
ANY D

eWA LT TOOL, CALL US TOLL FREE AT: 1-800-4-DeWALT

(1-800-433-9258).

WARNING: To reduce the risk of injury, read the instruction manual.

General Power Tool Safety Warnings

WARNING! Read all safety warnings and all instructions.
Failure to follow the warnings and instructions may result in
electric shock, fire and/or serious injury.

SAVE ALL WARNINGS AND INSTRUCTIONS

FOR FUTURE REFERENCE

The term “power tool” in the warnings refers to your mains-operated
(corded) power tool or battery-operated (cordless) power tool.

1) WORK AREA SAFETY

a) Keep work area clean and well lit. Cluttered or dark areas

invite accidents.

b) Do not operate power tools in explosive atmospheres, such

as in the presence of flammable liquids, gases or dust.

Power tools create sparks which may ignite the dust or fumes.

c) Keep children and bystanders away while operating a

power tool. Distractions can cause you to lose control.

2) ELECTRICAL SAFETY

a) Power tool plugs must match the outlet. Never modify

the plug in any way. Do not use any adapter plugs with
earthed (grounded) power tools. Unmodified plugs and

matching outlets will reduce risk of electric shock.

b) Avoid body contact with earthed or grounded surfaces such

as pipes, radiators, ranges and refrigerators. There is an
increased risk of electric shock if your body is earthed or grounded.

c) Do not expose power tools to rain or wet conditions. Water

entering a power tool will increase the risk of electric shock.

d) Do not abuse the cord. Never use the cord for carrying,

pulling or unplugging the power tool. Keep cord away
from heat, oil, sharp edges or moving parts. Damaged or

entangled cords increase the risk of electric shock.

e) When operating a power tool outdoors, use an extension

cord suitable for outdoor use. Use of a cord suitable for
outdoor use reduces the risk of electric shock.

f) If operating a power tool in a damp location is unavoidable,

use a ground fault circuit interrupter (GFCI) protected

supply. Use of a GFCI reduces the risk of electric shock.

3) PERSONAL SAFETY

a) 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 influence of
drugs, alcohol or medication. A moment of inattention while

operating power tools may result in serious personal injury.

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tools. Such preventive safety measures reduce the risk of
starting the power tool accidentally.

d) Store idle power tools out of the reach of children and do

not allow persons unfamiliar with the power tool or these
instructions to operate the power tool. Power tools are

dangerous in the hands of untrained users.

e) Maintain power tools. 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.

f) Keep cutting tools sharp and clean. Properly maintained

cutting tools with sharp cutting edges are less likely to bind and
are easier to control.

g) Use the power tool, accessories and 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.

5) BATTERY TOOL USE AND CARE

a) 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.

b) Use power tools only with specifically designated battery

packs. Use of any other battery packs may create a risk of
injury and fire.

c) 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.

d) Under abusive conditions, liquid may be ejected from

the battery, avoid contact. If contact accidentally occurs,

b) Use personal protective equipment. Always wear eye

protection. Protective equipment such as dust mask, non-

skid safety shoes, hard hat, or hearing protection used for
appropriate conditions will reduce personal injuries.

c) Prevent unintentional starting. Ensure the switch is in

the off position before connecting to power source and/
or battery pack, picking up or carrying the tool. Carrying

power tools with your finger on the switch or energizing power
tools that have the switch on invites accidents.

d) Remove any adjusting key or wrench before turning the

power tool on. A wrench or a key left attached to a rotating
part of the power tool may result in personal injury.

e) Do not overreach. Keep proper footing and balance at

all times. This enables better control of the power tool in
unexpected situations.

f) Dress properly. Do not wear loose clothing or jewelry.

Keep your hair, clothing and gloves away from moving
parts. Loose clothes, jewelry or long hair can be caught in

moving parts.

g) 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.

4) POWER TOOL USE AND CARE

a) 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.

b) 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.

c) Disconnect the plug from the power source and/or the

battery pack from the power tool before making any
adjustments, changing accessories, or storing power

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CAUTION: Do not expose to rain.
WARNING:Remove plug from the outlet

immediately if the extension cord becomes damaged or cut.

WARNING: Some dust created by this product

contains chemicals known to the State of California to cause cancer,
birth defects or other reproductive harm. Some examples of these
chemicals are:

• compounds in fertilizers

• compounds in insecticides, herbicides and pesticides

• arsenic and chromium from chemically treated lumber

To reduce your exposure to these chemicals, wear approved safety
equipment such as dust masks that are specially designed to filter out
microscopic particles.

• The label on your tool may include the following symbols. The
symbols and their definitions are as follows:

V ................... volts

A ...................amperes

Hz ................. hertz

W ..................watts

min ............... minutes

or AC ....... alternating

current

or DC ... direct current

................. Class I

Construction
(grounded)

n

o ................. no load speed

................. Class

II Construction

(double

insulated)

…/min .......... per minute

RPM ............. revolutions per

minute

................. earthing terminal

.................. safety alert

symbol

CSPM ........... cut strokes per

minute

flush with water. If liquid contacts eyes, additionally seek
medical help. Liquid ejected from the battery may cause

irritation or burns.

6) SERVICE

a) Have your power tool serviced by a qualified repair

person using only identical replacement parts. This will

ensure that the safety of the power tool is maintained.

Hedge Trimmer Safety Warnings

• Keep all parts of the body away from the cutter blade.

Do not remove cut material or hold material to be cut
when blades are moving. Make sure the switch is off when
clearing jammed material. Blades coast after turn off. A

moment of inattention while operating the hedge trimmer may
result in serious personal injury.

• Carry the hedge trimmer by the handle with the cutter

blade stopped. Proper handling of the hedge trimmer will reduce

possible personal injury from the cutter blades.

DANGER: Keep hands away from blade. Contact

with blade will result in serious personal injury.

• Hold the power tool by insulated gripping surfaces only,

because the cutter blade may contact hidden wiring. Cutter

blades contacting a “live” wire may make exposed metal parts of
the power tool “live” and could give the operator an electric shock.

• Use both hands when operating the hedge trimmer. Using

one hand could cause loss of control and result in serious
personal injury.

• Keep extension cord away from cutting area. During

operation the extension cord may be hidden in shrubs and can
be accidentally cut by the blade.

• Check the hedge for foreign objects, e.g. wire fences.

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damaged, do not insert into the charger. Do not crush, drop or damage
the battery pack. Do not use a battery pack or charger that has
received a sharp blow, been dropped, run over or damaged in any way
(e.g., pierced with a nail, hit with a hammer, stepped on). Damaged
battery packs should be returned to the service center for recycling.

WARNING: Fire hazard. Do not store or carry

the battery pack so that metal objects can contact exposed
battery terminals. For example, do not place the battery pack in

aprons, pockets, tool boxes, product kit boxes, drawers, etc., with
loose nails, screws, keys, etc. Transporting batteries can possibly

cause fires if the battery terminals inadvertently come in
contact with conductive materials such as keys, coins, hand
tools and the like. The US Department of Transportation Hazardous

Material Regulations (HMR) actually prohibit transporting batteries in
commerce or on airplanes (e.g., packed in suitcases and carry-on
luggage) UNLESS they are properly protected from short circuits. So
when transporting individual battery packs, make sure that the battery
terminals are protected and well insulated from materials that could
contact them and cause a short circuit.

Transportation

Your DeWALT batteries comply with all applicable shipping
regulations as prescribed by industry and legal standards, including
UN Recommendations on the Transport of Dangerous Goods;
International Air Transport Association (IATA) Dangerous Goods
Regulations, International Maritime Dangerous Goods (IMDG)
Regulations, and U.S. Department of Transportation Regulations.
Lithium-ion cells and batteries have been tested to section 38.3 of the
UN Recommendations on the Transport of Dangerous Goods Manual
of Tests and Criteria.

The shipping or transportation of the battery in this product is restricted
and may be classified as a Class 9 Hazardous material.

Important Safety Instructions for All Battery
Packs

When ordering replacement battery packs, be sure to include the
catalog number and voltage. Consult the chart at the end of this
manual for compatibility of chargers and battery packs.

The battery pack is not fully charged out of the carton. Before using
the battery pack and charger, read the safety instructions below and
then follow charging procedures outlined.

READ ALL INSTRUCTIONS

• Do not charge or use the battery pack in explosive
atmospheres, such as in the presence of flammable liquids,
gases or dust. Inserting or removing the battery pack from the

charger may ignite the dust or fumes.

• NEVER force the battery pack into the charger. DO NOT
modify the battery pack in any way to fit into a non­compatible charger as battery pack may rupture causing
serious personal injury. Consult the chart at the end of this

manual for compatibility of batteries and chargers.

• Charge the battery packs only in designated D

eWALT chargers.

• DO NOT splash or immerse in water or other liquids. If appliance
does get wet, allow to dry for a minimum of 48 hours before using.

• Do not store or use the tool and battery pack in locations
where the temperature may reach or exceed 105 °F (40 °C)
(such as outside sheds or metal buildings in summer). For

best life store battery packs in a cool, dry location.

NOTE: Do not store the battery packs in a tool with the

trigger switch locked on. Never tape the trigger switch in the
ON position.

WARNING: Fire hazard. Never attempt to open the

battery pack for any reason. If the battery pack case is cracked or

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The information provided in this section of the manual is provided in
good faith and believed to be accurate at the time the document was
created. However, no warranty, expressed or implied, is given. The
shipper is responsible to comply with the applicable regulations.

SPECIFIC SAFETY INSTRUCTIONS FOR LITHIUM ION (Li-Ion)

• Do not incinerate the battery pack even if it is severely
damaged or is completely worn out. The battery pack can

explode in a fire. Toxic fumes and materials are created when
lithium ion battery packs are burned.

• If battery contents come into contact with the skin,
immediately wash area with mild soap and water. If battery
liquid gets into the eye, rinse water over the open eye for 15
minutes or until irritation ceases. If medical attention is needed,
the battery electrolyte is composed of a mixture of liquid organic
carbonates and lithium salts.

• Contents of opened battery cells may cause respiratory irritation.
Provide fresh air. If symptoms persist, seek medical attention.

WARNING: Burn hazard. Battery liquid may be

flammable if exposed to spark or flame.

The RBRC™ Seal

The RBRC® (Rechargeable Battery Recycling Corp­oration) Seal on the lithium-ionbatteries (or battery
packs) indicates that the costs to recycle these batteries
(or battery packs) at the end of their useful life have
already been paid by BLACK+DECKER. In some areas,
it is illegal to place spent lithium-ion batteries in the trash or municipal
solid waste stream and the Call 2 Recycle® program provides an
environmentally conscious alternative.

Call 2 Recycle, Inc., in cooperation with BLACK+DECKER and other
battery users, has established the program in the United States and
Canada to facilitate the collection of spent lithium-ion batteries. Help

SHIPPING BY AIRPLANE (BY AIR) OR SHIP (BY SEA)

• Contact your carrier for up to date instructions. Have your contents
(including the battery) with you when contacting them. The
specifications written on them will be needed to prepare them for
shipment, pack them in a compliant box, and properly label the
box.

SHIPPING BY GROUND (HIGHWAY OR RAIL)

• The original product box and its packing material can be used for
shipping by ground within the United States and Canada with the
following stipulations:

1. The battery and all other contents must be in their original

packing materials and arranged as received (including the
battery in its original plastic bag and battery box).

2. The original product box and all other packing materials must

be undamaged.

3. The shipment must be include a document which contains the

following:

• The package contains lithium-ion cells or batteries.

• The package must be handled with care and that a

flammability hazard exists if the package is damaged.

• Special procedures should be followed in the event the

package is damaged, to include inspection and repacking if
necessary.

• The telephone numbers for additional information (US and

Canada 1-888-698-2571, Elsewhere [phone]).

• To ship by ground in a generic box, contact your carrier for

up to date instructions. Have your contents (including the
battery) with you when contacting them. The specifications
written on them will be needed to prepare them for shipment,
pack them in a compliant box, and properly label the box.

It is forbidden to fly with these batteries even if the batteries are in
checked baggage.

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• Do not expose the charger to rain or snow.

• Pull by the plug rather than the cord when disconnecting the
charger. This will reduce the risk of damage to the electric plug and cord.

• Make sure that the cord is located so that it will not be

stepped on, tripped over or otherwise subjected to damage
or stress.

• Do not use an extension cord unless it is absolutely
necessary. Use of improper extension cord could result in risk of

fire, electric shock or electrocution.

• When operating a charger outdoors, always provide a dry
location and use an extension cord suitable for outdoor use. Use
of a cord suitable for outdoor use reduces the risk of electric shock.

• An extension cord must have adequate wire size (AWG or
American Wire Gauge) for safety. The smaller the gauge number
of the wire, the greater the capacity of the cable, that is, 16 gauge
has more capacity than 18 gauge. An undersized cord will cause a
drop in line voltage resulting in loss of power and overheating. When
using more than one extension to make up the total length, be sure
each individual extension contains at least the minimum wire size.
The following table shows the correct size to use depending on cord
length and nameplate ampere rating. If in doubt, use the next heavier
gauge. The lower the gauge number, the heavier the cord.

Minimum Gauge for Cord Sets

Ampere Rating

Volts Total Length of Cord in Feet (meters)
120V

25 (7.6) 50 (15.2) 100 (30.5) 150 (45.7)

240V

50 (15.2) 100 (30.5) 200 (61.0) 300 (91.4)

More
Than

Not More

Than

AWG

0 6 18 16 16 14

6 10 18 16 14 12
10 12 16 16 14 12
12 16 14 12 Not Recommended

protect our environment and conserve natural resources by returning
the spent lithium-ion batteries to an authorized BLACK+DECKER
service center or to your local retailer for recycling. You may also contact
your local recycling center for information on where to drop off the spent
battery. RBRC® is a registered trademark of Call 2 Recycle, Inc.

Important Safety Instructions for All Battery
Chargers

SAVE THESE INSTRUCTIONS: This manual contains important
safety and operating instructions for battery chargers.

• Before using the charger, read all instructions and cautionary markings
on the charger, battery pack and product using the battery pack.

WARNING: Shock hazard. Do not allow any liquid to

get inside the charger. Electric shock may result.

CAUTION: Burn hazard. To reduce the risk of injury,

charge only D

eWALT rechargeable battery packs. Other types of

batteries may overheat and burst resulting in personal injury and
property damage.

NOTICE: Under certain conditions, with the charger plugged into the
power supply, the charger can be shorted by foreign material. Foreign
materials of a conductive nature, such as, but not limited to, grinding
dust, metal chips, steel wool, aluminum foil or any buildup of metallic
particles should be kept away from the charger cavities. Always unplug
the charger from the power supply when there is no battery pack in the
cavity. Unplug the charger before attempting to clean.

• DO NOT attempt to charge the battery pack with any
chargers other than the ones in this manual. The charger and
battery pack are specifically designed to work together.

• These chargers are not intended for any uses other than

charging D

eWALT rechargeable batteries. Any other uses may

result in risk of fire, electric shock or electrocution.

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blink continuously indicating that the charging process has
started.

3. The completion of charge will be indicated by the red light
remaining ON continuously. The pack is fully charged and may be
used at this time or left in the charger.

Indicator Light Operation

PACK CHARGING

PACK CHARGED

HOT/COLD DELAY

Charge Indicators

This charger has a hot/cold delay feature. When the charger detects
a battery that is hot, it automatically delays charging until the battery
has cooled. When the charger detects a battery that is cold, it
automatically delays charging until the battery has warmed.

The red light will continue to blink, but a yellow indicator light will
be illuminated during this operation. Once the battery has cooled,
the yellow light will turn off and the charger will resume the charging
procedure.

LEAVING THE BATTERY PACK IN THE CHARGER

The charger and battery pack can be left connected with the charge
indicator showing Pack Charged.

WEAK BATTERY PACKS: Weak batteries will continue to function
but should not be expected to perform as much work.

FAULTY BATTERY PACKS: This charger will not charge a faulty
battery pack. The charger will indicate faulty battery pack by refusing
to light.

• Do not place any object on top of the charger or place the
charger on a soft surface that might block the ventilation
slots and result in excessive internal heat. Place the charger

in a position away from any heat source. The charger is ventilated
through slots in the top and the bottom of the housing.

• Do not operate the charger with a damaged cord or plug.

• Do not operate the charger if it has received a sharp blow,
been dropped or otherwise damaged in any way. Take it to an
authorized service center.

• Do not disassemble the charger; take it to an authorized
service center when service or repair is required. Incorrect
reassembly may result in a risk of electric shock, electrocution or fire.

• Disconnect the charger from the outlet before attempting
any cleaning. This will reduce the risk of electric shock.
Removing the battery pack will not reduce this risk.

• NEVER attempt to connect 2 chargers together.

• The charger is designed to operate on standard 120V

household electrical power. Do not attempt to use it on any
other voltage.

Chargers

Be sure to read all safety instructions before using your charger.
Consult the chart at the end of this manual for compatibility of chargers
and battery packs.

Charging Procedure (Fig. 1)

1. Plug the charger into an appropriate

I

FIG. 1

outlet before inserting the battery
pack.

2. Insert the battery pack into the

charger, as shown in Figure 1, making
sure the pack is fully seated in the
charger. The red (charging) light will

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c. Move the charger and battery pack to a location where the

surrounding air temperature is approximately 65 °F – 75 °F
(18° – 24 °C);

d. If charging problems persist, take the tool, battery pack and

charger to your local service center.

5. The battery pack should be recharged when it fails to produce
sufficient power on jobs which were easily done previously. DO
NOT CONTINUE to use it under these conditions. Follow the
charging procedure. You may also charge a partially used pack
whenever you desire with no adverse effect on the battery pack.

6. Foreign materials of a conductive nature such as, but not limited
to, grinding dust, metal chips, steel wool, aluminum foil, or any
buildup of metallic particles should be kept away from charger
cavities. Always unplug the charger from the power supply when
there is no battery pack in the cavity. Unplug the charger before
attempting to clean it.

7. Do not freeze or immerse the charger in water or any other liquid.

WARNING: Shock hazard. Don’t allow any liquid to get inside the

charger. Electric shock may result.

WARNING: Burn hazard. Do not submerge the battery pack in

any liquid or allow any liquid to enter the battery pack. Never attempt
to open the battery pack for any reason. If the plastic housing of the
battery pack breaks or cracks, return it to a service center for recycling.

Storage Recommendations

1. The best storage place is one that is cool and dry, away from direct
sunlight and excess heat or cold.

2. For long storage, it is recommended to store a fully charged
battery pack in a cool dry place out of the charger for optimal
results.

NOTE: Battery packs should not be stored completely depleted of
charge. The battery pack will need to be recharged before use.

NOTE: This could also mean a problem with a charger.

Wall Mounting

These chargers are designed to be wall mountable or to sit upright on
a table or work surface.

If wall mounting, locate the charger within reach of an electrical outlet.
Mount the charger securely using drywall screws at least 1” (25.4 mm)
long, screwed into wood to an optimal depth leaving approximately
7/32” (5.5 mm) of the screw exposed.

Important Charging Notes

1. Longest life and best performance can be obtained if the battery
pack is charged when the air temperature is between 65 °F and
75 °F (18° – 24 °C). DO NOT charge the battery pack in an air
temperature below +40 °F (+4.5 °C), or above +104 °F (+40 °C).
This is important and will prevent serious damage to the battery
pack.

2. The charger and battery pack may become warm to the touch
while charging. This is a normal condition, and does not indicate
a problem. To facilitate the cooling of the battery pack after use,
avoid placing the charger or battery pack in a warm environment
such as in a metal shed or an uninsulated trailer.

3. A cold battery pack will charge at about half the rate of a warm
battery pack. The battery pack will charge at that slower rate
throughout the entire charging cycle and will not return to
maximum charge rate even if the battery pack warms.

4. If the battery pack does not charge properly:

a. Check operation of the receptacle by plugging in a lamp or

other appliance;

b. Check to see if the receptacle is connected to a light switch

which turns the power off when you turn out the lights;

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FIG. 3

H

I

FIG. 4

J

To remove battery pack: Depress thebattery release button (J) in
the back of the battery housing and pull battery pack out of tool as
shown in Figure 4.

FUEL GAUGE BATTERY PACKS (FIG. 5)

Some D

eWALT battery packs include a

5A

FIG. 5

fuel gauge which consists of three
green LED lights that indicate the level
of charge remaining in the battery pack.

To actuate the fuel gauge, press and
hold the fuel gauge button (5A). A
combination of the three green LED
lights will illuminate designating the
level of charge left. When the level of
charge in the battery is below the usable limit, the fuel gauge will not
illuminate and the battery will need to be recharged.

NOTE: The fuel gauge is only an indication of the charge left on the battery
pack. It does not indicate tool functionality and is subject to variation
based on product components, temperature and end-user application.

For more information regarding fuel gauge battery packs, please call
1-800-4-D

eWALT (1-800-433-9258) or visit our website www.dewalt.com.

SAVE THESE INSTRUCTIONS

Components (Fig. 2)

A. Trigger switch F. Blade
B. Lock-off switch G Sheath
C. Switch handle H. Battery housing
D. Blade guard I. Battery pack
E. Bail handle J. Battery release button

D

F

E

B

FIG. 2

A

H I

G

C

J

OPERATION
Installing and Removing the Battery Pack

(Fig. 3–4)

WARNING: Before removing or installing battery,

make

certain the lock-off lever is engaged

to prevent switch actuation.

To install battery pack: Insert battery pack (I) into battery housing
(H) as shown in Figure 3 until fully seated and an audible click is heard.
Make sure battery pack is fully seated and fully latched into position.

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E

C

D

FIG. 7

FIG. 8

3.

LEVEL HEDGES (Fig. 9)

– To obtain exceptionally level hedges a
piece of string can be stretched along the length of the hedge as a
guide.

4.

SIDE TRIMMING HEDGES (Fig. 10)

– Orient the trimmer as

shown and begin at the bottom and sweep up.

FIG. 9

FIG. 10

DANGER: KEEP HANDS AWAY FROM BLADES.
WARNING: To guard against injury, observe the

following:

Switch

To turn the unit on, push the lock off

A

B

FIG. 6

switch (B) forward as shown in Figure6,
and squeeze the trigger switch (A). Once
the unit is running, you may release the
lock off switch.

In order to keep the unit running you
must continue to squeeze the trigger. To
turn the unit off, fully release the trigger and allow the lock-off switch
(B) to engage.

WARNING: Never attempt to lock a switch in the

ON position.

CAUTION: Do not cut stems greater than

3/4 inch (19 mm). Use the trimmer only for cutting normal
shrubbery around houses and buildings.

Trimming Instructions

1. WORKING POSITION (fig. 7) – Maintain proper footing and

balance and do not overreach. Wear safety goggles, non-skid
footwear when trimming. Hold the unit firmly in both hands and
turn the unit on. Always hold the trimmer as shown in Figure 7,
with one hand on the switch handle (C) and one hand on the bail
handle (E). Never hold the unit by the blade guard (D).

2. TRIMMING NEW GROWTH (Fig. 8) – Using a wide, sweeping

motion, feeding the blade teeth through the twigs, is most
effective. A slight downward tilt of the blade in the direction of
motion gives the best cutting.

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The cutting blades are made from high quality, hardened steel and with
normal usage, they will not require

FIG. 12

resharpening. However, if you
accidentally hit a wire fence (Fig. 12),
stones, glass, or other hard objects,
you may put a nick in the blade. There
is no need to remove this nick as long
as it does not interfere with the
movement of the blade. If it does
interfere, remove the battery and use a
fine toothed file or sharpening stone to
remove the nick. If you drop the
trimmer, carefully inspect it for damage.
If the blade is bent, housing cracked,
handles broken or if you see any other
condition that may affect the trimmer’s operation contact your local
DeWALT authorized service center

for repairs before putting it back into

use.
Fertilizers and other garden chemicals contain agents which greatly

accelerate the corrosion of metals. Do not store the unit on or adjacent
to fertilizers or chemicals.

With the battery removed, use only mild soap and a damp cloth to
clean the unit. Never let any liquid get inside the unit; never immerse
any part of the unit into a liquid. Prevent the blades from rusting by
applying a film of light machine oil after cleaning.

Accessories

WARNING: DO NOT use the hedge trimmer

with any type of accessory or attachment. Such usage might
be hazardous.

• READ INSTRUCTION MANUAL BEFORE USING. SAVE
INSTRUCTION MANUAL.

• Check the hedge for foreign objects such as wires or fences before
each use.

• KEEP HANDS ON HANDLES. DON’T OVERREACH.

• DO NOT USE UNDER WET CONDITIONS.

CAUTION: BLADE MAY COAST AFTER TURN OFF.

MAINTENANCE

WARNING: Remove battery pack before servicing,

cleaning or removing material from the hedge trimmer.

Your D

eWALT tool has been designed to operate over a long period

of time with minimum maintenance.
Continuous satisfactory operation depends on proper tool care and

regular cleaning.

WARNING: Before performing any maintenance,

switch off tool and remove battery.

Lubrication (Fig.11)

1. After use, carefully clean the blades with a resin solvent.

2. After cleaning, apply a light film of lubrication to the exposed blade.

3. Insert the battery and turn the trimmer vertical with the blades

toward the ground and run the trimmer for a few seconds to fully
disperse the lubrication.

4. Keeping your hands away from the

FIG. 11

G

blade, slide the sheath (G) over the
blade until it snaps into place as
shown in Figure 11.

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English

In addition to the warranty, DeWALT tools are covered by our:

3 YEAR FREE SERVICE

D

eWA LT will maintain the tool and replace worn parts caused by

normal use, for free, any time during the first year after purchase.

D

eWALT BATTERY PACKS

Product warranty voided if the battery pack is tampered with in any
way. D

eWA LT is not responsible for any injury caused by tampering and

may prosecute warranty fraud to the fullest extent permitted by law.

90 DAY MONEY BACK GUARANTEE

If you are not completely satisfied with the performance of your
D

eWA LT Power Tool, Laser, or Nailer for any reason, you can return it

within 90 days from the date of purchase with a receipt for a full refund
– no questions asked.

LATIN AMERICA: This warranty does not apply to products sold
in Latin America. For products sold in Latin America, see country
specific warranty information contained in the packaging, call the local
company or see website for warranty information.

FREE WARNING LABEL REPLACEMENT: If your warning labels
become illegible or are missing, call 1-800-4-D

eWALT (1-800-433-

9258) for a free replacement.

SER.

WARNING/AVERTISSEMENT/ADVERTENCIA

DEWALT INDUSTRIAL TOOL CO., BALTIMORE, MD 21286 U.S.A.
FOR SERVICE INFORMATION, CALL 1-800-4-DEWALT www.DEWALT.com MADE IN CHINA

DCHT820

TO REDUCE THE RISK OF INJURY, USER MUST READ INSTRUCTION MANUAL. USE PROPER EYE AND
RESPIRATORY PROTECTION. AFIN DE RÉDUIRE LE RISQUE
DE BLESSURES, L’UTILISATEUR DOIT LIRE LE MODE D’EMPLOI. UTILISER UNE PROTECTION OCULAIRE ET
RESPIRATOIRE ADÉQUATE. PARA REDUCIR EL RIESGO DE LESIONES, EL USUARIO DEBE LEER EL MANUAL
DE INSTRUCCIONES. UTILICE PROTECCIÓN ADECUADA PARA LOS OJOS Y VÍAS RESPIRATORIAS.

GARDENING
APPLIANCE

Repairs

The charger and battery pack are not serviceable. There are no
serviceable parts inside the charger or battery pack.
To assure product SAFETY and RELIABILITY, repairs, maintenance
and adjustments (including brush inspection and replacement) should
be performed by a D

eWA LT factory service center, a DeWA LT

authorized service center or other qualified service personnel. Always
use identical replacement parts.

Register Online

Thank you for your purchase. Register your product now for:

• WARRANTY SERVICE: Registering your product will help you

obtain more efficient warranty service in case there is a problem
with your product.

• CONFIRMATION OF OWNERSHIP: In case of an insurance

loss, such as fire, flood or theft, your registration of ownership will
serve as your proof of purchase.

• FOR YOUR SAFETY: Registering your product will allow us to

contact you in the unlikely event a safety notification is required
under the Federal Consumer Safety Act.

Register online at www.dewalt.com/register.

Three Year Limited Warranty

DeWA LT will repair, without charge, any defects due to faulty materials
or workmanship for three years from the date of purchase. This
warranty does not cover part failure due to normal wear or tool abuse.
For further detail of warranty coverage and warranty repair information,
visit www.dewalt.com or call 1-800-4-D

eWALT (1-800-433-9258).

This warranty does not apply to accessories or damage caused where
repairs have been made or attempted by others. This warranty gives
you specific legal rights and you may have other rights which vary in
certain states or provinces.

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English

TROUBLESHOOTING

Problem Solution

Unit will not start. • Check battery installation.

• Check battery charging requirements.

• Check that lock off is fully pushed
down prior to moving main trigger.

Battery won’t charge. • Insert battery into charger until red

charging light illuminates. Charge up
to 8 hours if battery is totally drained.

•

Plug charger into a working outlet. Refer
to

Important Charging Notes

for

more details.

• Check current at receptacle by
plugging an appliance.

• Check to see if receptacle is
connected to a light switch which
turns power off when you turn out the
lights.

• Move charger and appliance to a
surrounding air temperature of above
40°F (4.5°C) or below 105°F
(40.5°C).

Slow running, noisy,
or hot blades.

• Inspect for nicks and remove if possible.

• Lubricate blades.

• Bring to a D

eWA LT factory service

center to straighten blade, blade
support, or teeth.

• Tighten bolts on the blade.