DeWalt DCS372B TYPE 1 Owner’s Manual

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INSTRUCTION MANUAL
GUIDE D'UTILISATION
MANUAL DE INSTRUCCIONES

INSTRUCTIVO DE OPERACION, CENTROS DE SERVICIO Y POLIZA DE
GARANT[A. ADVERTENOIA: LEASE ESTE INSTRUCTIVO ANTES DE

USAR EL PRODUCTO.

DCS372

18V 5-1/2" (140 mm) Cordless Metal-Cutting Circular Saw

Scie circulaire & mdtaux sans fil, 140 mm (5-1/2 po) et 18 V
Sierra circular inal&mbrica de 18 V 140 mm (5,5 pulg.) para corte de metal

®

Definitions: Safety Guidelines

The definitions below describe the level of severity br 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.
iJ,WARNING: Indicates a potentially hazardous situation

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

. J

IF YOU HAVE ANY QUESTIONS OR COMMENTS ABOUT THIS OR
ANY DEWALT TOOL, CALL US TOLL FREE AT: 1-800-4-DEWALT

(1-800-433-9258}.

_ ARNING: 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.

If operating a powertool 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.

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

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

ofmoving 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 cau,_ed by poorly maintained power tool,_.

t) 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) BATFERY 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 H 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 bums or a fire.

d) 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 bums.

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.

Safety Instructions for All Saws

a) _DANGER: Keep hands away from cutting area and

the blade. Keep your second hand on auxiliary handle,
or motor housing. If both hands are holding the saw, they

cannot be cut by the blade.

b) Do not reach underneath the workpiece. The guard cannot

protect you from the blade below the workpiece.

c) Adjust the cutting depth to the thickness of the workpiece.

Less than a full tooth of the blade teeth should be visible below
the workpiece.

d) Never hold piece being cut in your hands or across

your leg. Secure the workpiece to a stable platform. /t

is important to support the work properly to minimize body

exposure, blade binding, or loss of control

e) Hold power tool by insulated gripping surfaces when

performing an operation where the cutting tool may

contact hidden wiring. Contact with a "live" wire will also

make exposed metal parts of the power tool "live" and shock
the operator.
When ripping always use a rip fence or straight edge

guide. This improves the accuracy of cut and reduces the
chance of blade binding.

g) Always use blades with correct size and shape (diamond

versus round) of arbor holes. Blades that do not match the
mounting hardware of the saw will run eccentrically, causing

loss of control.

h) Never use damaged or incorrect blade washers or bolt.

The blade washers and bolt were specially designed for your
saw, for optimum performance and safety of operation.

Further Safety Instructions for All Saws

CAUSES AND OPERATOR PREVENTION OF KICKBACK:

• Kickback is a sudden reaction to a pinched, bound or misa/igned

saw blade, causing an uncontrolled saw to rift up and out of the
workpiece toward the operator,"

• When the blade is pinched or bound tightly by the kerr closing
down, the blade stalls and the motor reaction drives the unit rapidly
back toward the operator,"

• If the blade becomes twisted or misaligned in the cut, the teeth at
the back edge of the blade can dig into the top surface of the wood
causing the blade to climb out of the kerf andjump back toward the
operator.

Kickback is the result of saw misuse and/or incorrect operating

procedures or conditions and can be avoided by taking proper
precautions as given below."

a) Maintain a firm grip with both hands on the saw and

position your arms to resist kickback forces. Position
your body to either side of the blade, but not in line with

the blade. Kickback could cause the saw to jump backwards,

butkickbackforcescanbecontrolledbytheoperator,ifproper

precautionsaretaken.

b)When blade is binding, or when interrupting a cut for any

reason, release the trigger and hold the saw motionless
in the material until the blade comes to a complete
stop. Never attempt to remove the saw from the work
or pull the saw backward while the blade is in motion or

kickback may occur. Investigate and take corrective actions
to eliminate the cause of blade binding.

c) When restarting a saw in the workpiece, center the

saw blade in the kerf and check that saw teeth are not
engaged into the material. If saw blade is binding, it may

walk up or kickback from the workpiece as the saw is restarted.

d) Support large panels to minimize the risk of blade

pinching and kickback. Large panels tend to sag under their

own weight. Supports must be placed under the panel on both
sides, near the line of cut and near the edge of the panel

e) Do not use dull or damaged blades. Unsharpened or

improperly set blades produce narrow kerr causing excessive
friction, blade binding and kickback.

Blade depth and bevel adjusting locking levers must be
tight and secure before making cut. If blade adjustment

shifts while cutting, it may cause binding and kickback.

g) Use extra caution when sawing into existing walls or

other blind areas. The protruding blade may cut objects that
can cause kickback.

LOWER GUARD SAFETY INSTRUCTIONS

a) Check lower guard for proper closing before each use. Do

not operate the saw if lower guard does not move freely
and close instantly. Never clamp or tie the lower guard

into the open position. If saw is accidentally dropped, lower

guard may be bent. Raise the lower guard with the retracting

handle and make sure it moves freely and does not touch the
blade or any other part, in all angles and depths of cut.

b) Check the operation of the lower guard spring. If the

guard and the spring are not operating properly, they
must be serviced before use. Lower guard may operate

sluggishly due to damaged parts, gummy deposits, or a build-
up of debris.

c) Lower guard should be retracted manually only for

special cuts such as "plunge cuts" and "compound cuts."
Raise lower guard by retracting handle and as soon

as blade enters the material, the lower guard must be
released. For all other sawing, the lower guard should operate

automatically.

d) Always observe that the lower guard is covering the

blade before placing saw down on bench or floor. An
unprotected, coasting blade will cause the saw to walk

backwards, cutting whatever is in its path. Be aware of the time
it takes for the blade to stop after switch is released.

NOTE: Although the above information references wood, this saw is
only to be used to cut metal Kickback can occur when cutting metal

Additional Specific Safety Instructions for

Circular Saws

i_ WARNING: Do not use abrasive wheels or blades.

WARNING: Do not use water feed attachments.

ACAUTION: Do not attempt to cut stainless steel, rebar,
hardened or heat-treated steel, cast iron, masonry or unknown

materials

• Use clamps or another practical way to secure and support
the workpiece to a stable platform. Holding the work by hand

or against your body leaves it unstable and may lead to loss of
control.

• Keep your body positioned to either side of the blade, but
not in line with the saw blade. KICKBACK could cause the saw

to jump backwards (see Causes and Operator Prevention of
Kickback and KICKBACK).

• Air vents often cover moving parts and should be avoided.
Loose clothes, jewelry or long hair can be caught in moving parts.

WARNING: ALWAYS use safety glasses. Everyday eyeglasses are

NOTsafety glasses. Also use face or dust mask if cutting operation
is dusty. ALWAYS WEAR CERTIFIED SAFETY EQUIPMENT_

• ANSI Z87.1 eye protection (CAN/CSA Z94.3),

• ANSI $12.6 ($3.19) hearing protection,

• NIOSH/OSHA/MSHA respiratory protection.

A WARNING: Some dust created by power sanding, sawing,

grinding, drilling, and other construction activities contains chemicals

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

• lead from lead-based paints,

• crystalline silica from bricks and cement and other masonry
products, and

• arsenic and chromMm from chemically-treated lumber.

Your risk from these exposures varies, depending on how often you
do this type of work. To reduce your exposure to these chemicals:
work in a well ventilated area, and work with approved safety
equipment, such as those dust masks that are specially designed to
filter out microscopic particles.

• Avoid prolonged contact with dust from power sanding,

sawing, grinding, drilling, and other construction activities.

Wear protective clothing and wash exposed areas with soap

and water. Allowing dust to get into your mouth, eyes, or lay on

the skin may promote absorption of harmful chemicals.

A WARNING: Use of this tool can generate and/or disperse dust,
which may cause serious and permanent respiratory or other

injury. Always use NIOSH/OSHA approved respiratory protection
appropriate for the dust exposure. Direct particles away from face

and body.

_ WARNING: Always wear proper personal hearing protection
that conforms to ANSI $12.6 ($3.19) during use. Under some

conditions and duration of use, noise from this product may
contribute to hearing loss.

A CAUTION: When not in use, place circular saw on a stable

surface, shoe side down, where it will not cause a tripping or
falling hazard. Some tools with large battery packs will stand upright

on the battery pack but may be easily knocked over.

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

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

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

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

--- or DC... direct current

(_) ................. Class I Construction

(grounded)

[] ................. Class II Construction

(double insulated)

.../min .......... per minute

BPM ............. beats per minute

IPM ............... impacts per minute

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

minute

sfpm ............. surface feet

per minute

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

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

"_ or AC .......... alternating

current

_-_or AC/DC... alternating

or direct
current

no .................... no load

speed

n...................... rated

speed

..................... earthing

terminal

_ ..................... safety alert

symbol

SPM ............. strokes per minute

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. Then
follow charging procedures outlined.

READ ALL INSTRUCTIONS

• Do not charge or use battery in explosive atmospheres,

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

Inserting or removing the battery from the charger may ignite the
dust or fumes.

• NEVER force battery pack into charger. DO NOT modify

battery pack in any way to fit into a non-compatible 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 DEWALT chargers.

• DO NOT splash or immerse in water or other liquids.

• 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).

_DANGER: Electrocution hazard. Never attempt to open the battery

pack for any reason. If battery pack case is cracked or damaged, do

not insert into charger. Do not crush, drop or damage 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 (i.e., pierced with a
nail, hit with a hammer, stepped on). Electric shock or electrocution

may result. Damaged battery packs should be returned to service
center for recycling.

NOTE" Battery storage and carrying caps are
provided for use whenever the battery is out of the
tool or charger. Remove cap before placing battery in
charger or tool.

_ WARNING: Fire hazard. Do not store or carry

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

tool boxes, product kit boxes, drawers, etc., with loose nails,
screws, keys, etc. without battery cap. 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 U.S. Department of Transportation

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

could contact them and cause a short circuit.

SPECIFIC SAFETY INSTRUCTIONS FOR NICKEL CADMIUM
(NiCd) OR NICKEL METAL HYDRIDE (NiMH)

• 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.

• A small leakage of liquid from the battery pack cells may
occur under extreme usage or temperature conditions. This

does not indicate a failure.
However, if the outer seal is broken:

a. and the battery liquid gets on your skin, immediately wash with

soap and water for several minutes.

b. and the battery liquid gets into your eyes, flush them with

clean water for a minimum of 10 minutes and seek immediate

medicalattention.(Medicalnote: The liquid is 25-35%

solution of potassium hydroxide.)

SPECIFIC SAFETY INSTRUCTIONS FOR LITHIUM ION (Li-lon)

• 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.

A WARNING: Bum hazard. Battery liquid may be flammable if
exposed to spark or flame.

The RBRC TM Seal

The RBRCTM (Rechargeable Battery Recycling
Corporation) Seal on the nickel cadmium, nickel metal
hydride or lithium ion batteries (or battery packs)indicate
that the costs to recycle these batteries (or battery
packs) at the end of their useful life have already been
paid by DEWALT. In some areas, it is illegal to place
spent nickel cadmium, nickel metal hydride or lithium ion batteries in
the trash or municipal solid waste stream and the RBRC program
provides an environmentally conscious alternative.

RBRCTM in cooperation with DFWALT and other battery users, has
established programs in the United States and Canada to facilitate
the collection of spent nickel cadmium, nickel metal hydride or lithium

ion batteries. Help protect our environment and conserve natural
resources by returning the spent nickel cadmium, nickel metal hydride

or lithium ion batteries to an authorized DEiWALTservice 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 TM is a registered trademark of the Rechargeable Battery

Recycling Corporation.

Important Safety Instructions for All
Battery Chargers

SAVE THESE INSTRUCTIONS: This manual contains important

safety and operating instructions for battery chargers.

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

ADANGER: Electrocution hazard. 120 volts are present at charging
terminals. Do not probe with conductive objects. Electric shock or

electrocution may result.
A WARNING: Shock hazard. Do not allow any liquid to get inside

charger. Electric shock may result.
A CAUTION: Bum hazard. To reduce the risk of injury, charge only

DEWALT rechargeable batteries. Other types of batteries may burst
causing personal injury and damage.

NOTICE: Under certain conditions, with the charger plugged in to
the power supply, the exposed charging contacts inside 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 charger cavities. Always unplug the charger from
the power supply when there is no battery pack in the cavity, Unplug
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 DEWALT rechargeable batteries. Any other uses may

result in risk of fire, electric shock or electrocution.

• Do not expose charger to rain or snow.

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

• Make sure that 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 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.

• 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 smaller the gauge number,

the heavier the cord.

Minimum Gauge for Cord Sets

Not

More

6

10
12

16

Volts Total Length of Cord in Feet (meters)
120V 25 (7.6) 50 (15.2) 100 (30.5)

240V 50 (15.2) 100 (30.5) 200 (61.0)

AWG

150 (45.7)

300 (91.4)

Ampere

Rating

More
Than

Than

0 18 16 16 14

6 18 16 14 12

10 16 16 14 12
12 14 12 Not Recommended

• Do not place any object on top of 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 charger with damaged cord or plug.

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

authorized service center.

• Do not disassemble charger; take it to an authorized service
center when service or repair is required. Incorrect reassemb/y
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 two chargers together.

• The charger is designed to operate on standard 120 volts

household electrical power. Do not attempt to use it on any
other voltage. This does not apply to the vehicular charger.

Using Automatic Tune-Up TM Mode

The automatic Tune-Up TM Mode equalizes or balances the
individual cells in the battery pack allowing it to function at peak

capacity. Battery packs should be tuned up weekly or after
10 charge/discharge cycles or whenever the pack no longer delivers

the same amount of work. To use the automatic Tune-Up TM, place
the battery pack in the charger and leave it for at least 8 hours. The

charger will cycle through the following modes.

1. The red light will blink continuously indicating that the 1-hour
charge cycle has started.

2. When the 1-hour charge cycle is complete, the light will stay on
continuously and will no longer blink. This indicates that the pack

is fully charged and can be used at this time.

3. If the pack is left in the charger after the initial 1-hour charge, the
charger will begin the Automatic Tune-Up TM mode. This mode

continues up to 8 hours or until the individual cells in the battery
pack are equalized. The battery pack is ready for use and can be

removed at any time during the Automatic Tune-Up TM mode.

4. Once the Automatic Tune-Up TM mode is complete, the charger will
begin a maintenance charge; the red indicator will remain lit.

Chargers

Your tool uses a DEWALTcharger. 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)

i_DANGER: Electrocution hazard. 120 volts are present at charging
terminals. Do not probe with conductive objects. Electric shock or

electrocution may result.

1. Plug the charger into an appropriate outlet before inserting battery
pack.

2. Insert the battery pack (I) into the charger, as shown in Figure 1,
making sure the pack is fully seated in charger. The red (charging)

light will 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.

FIG.1

Indicator Light Operation

PACK CHARGING ................... === =_ =_ =_ =_ =_ =_ === =_

PACK CHARGED .....................

HOT/COLD PACK DELAY ........ _ [] _ [] _ []

REPLACE PACK ...................... ® ®®e®®®®®oo®o®e

PROBLEM POWER LiNE ........ ® ® O [] • ® [] [] [] O

Charge Indicators

Some chargers are designed to detect certain problems that can arise
with battery packs. Problems are indicated by the red light flashing
at a fast rate. If this occurs, re-insert battery pack into the charger. If

the problem persists, try a different battery pack to determine if the
charger is OK. If the new pack charges correctly, then the original

packis defectiveandshouldbereturnedto a servicecenteror
othercollectionsiteforrecycling.Ifthenewbatterypackelicitsthe

sametroubleindicationastheoriginal,havethechargertestedatan
authorizedservicecenter.

HOT/COLD PACK DELAY

Some chargers have a Hot/Cold Pack Delay feature: when the charger
detects a battery that is hot, it automatically starts a Hot Pack Delay,
suspending charging until the battery has cooled. After the battery
has cooled, the charger automatically switches to the Pack Charging
mode. This feature ensures maximum battery life. The red light flashes
long, then short while in the Hot Pack Delay mode.

PROBLEM POWER LINE

Some chargers have a Problem Power Line indicator. When the
charger is used with some portable power sources such as generators
or sources that convert DC to AC, the charger may temporarily
suspend operation, flashing the red light with two fast blinks
followed by a pause. This indicates the power source is out of limits.

LEAVING THE BATTERY PACK IN THE CHARGER

The charger and battery pack can be left connected with the red light
glowing indefinitely. The charger will keep the battery pack fresh and
fully charged.

NOTE: A battery pack will slowly lose its charge when kept out of
the charger. If the battery pack has not been kept on maintenance
charge, it may need to be recharged before use. A battery pack may
also slowly lose its charge if left in a charger that is not plugged into an
appropriate AC source.

WEAK BATrERY PACKS: Chargers can also detect a weak battery
pack. Such batteries are still usable but should not be expected to
perform as much work. The charger will indicate to replace battery
pack.

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 +105 °F (+40.5 °C).
This is important and will prevent serious damage to the battery
pack.

2. The charger and battery pack may become warm to 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. If the battery pack does not charge properly:
a. Check operation of receptacle by plugging in a lamp or other

appliance;

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

turns power off when you turn out the lights;

c. Move 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.

4. 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 under these conditions. Follow the
charging procedure. You may also charge a partially used pack

whenever you desire with no adverse affect on the battery pack.

5. Under certain conditions, with the charger plugged into the power
supply, the exposed charging contacts inside 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

10

be kept away from charger cavities. Always unplug the charger
from the power supply when there is no battery pack in the cavity.

Unplug charger before attempting to clean.

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

A WARNING: Shock hazard. Don't allow any liquid to get inside

charger. Electric shock may result.
,_,WARNING: Bum hazard. Never attempt to open the battery pack

for any reason. If the plastic housing of the battery pack breaks or
cracks, return to a service center for recycling.

Storage Recommendations

1. The best storage place isone that iscool 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.

SAVE THESE INSTRUCTIONS

FOR FUTURE USE

FIG. 2

B

A

M

E

C

COMPONENTS (Fig. 2)

A WARNING: Never modify the power tool or any part of it. Damage
or personal injury could result.

A. Trigger switch
B. Trigger switch lock-off button
C. Depth adjustment lever

D. Blade lock button

E. Kerf indicator

F.Blade clamping screw

G. Lower guard

H. Lower guard retracting lever

I. Battery pack

J. Sight window
K. Shoe

L. Blade wrench

M. Battery release buttons

D K

11

INTENDED USE

This metal cutting circular saw is intended for use by professionals for
cutting light gauge metals and small metal structural shapes.
DO NOT use under wet conditions or in presence of flammable liquids

or gases.
This metal cutting circular saw is a professional power tool. DO NOT
let children come into contact with the tool. Supervision is required
when inexperienced operators use this tool.

i_ WARNING: Do not plunge cut or pocket cut with this saw.

Windows (Fig. 2)

_WARNING: Do not operate the saw with a damaged or
missing sight window. If window is damaged or missing, have

the saw serviced at an authorized service center. If saw is operated
without the window, metal chips could fly through the guard and
cause personal injury.

A CAUTION: Do not use oil or cutting fluids with the metal-
cutting saw. Do not use cleaning fluids to clean window.

Cleaning fluids, cutting fluids or oils could harm the plastic in the
window, interfering with the safe operation of the saw.

The saw is equipped with a sight window (J) on the side of the upper
guard. This window allows the user to see a cutting lineon the material

to be cut.

Saw Shoe (Fig. 2)

The front of the saw shoe (K) has a kerf indicator (E) that allows the
operator to glide the saw along cutting lines. Aligning the cutting line
with the notch on the front of the shoe and centering it using the
modified V-shaped kerf indicator allows the operator to keep the
blade in line with the cutting line. If the cutting line is visible through
the narrowest part of the kerf indicator, the blade will pass directly over
the cutting line.

OPERATION

_ WARNING: To reduce the risk of injury, turn unit off and
disconnect R from power source before installing and removing
accessories, before adjusting or when making repairs. An

accidental start-up can cause injury.

Installing and Removing the Battery Pack
(Fig. 3)

NOTE: For best results, make sure your battery pack is fully charged.
Toinstall the battery pack (I)into the tool handle, align the notch inside

the tool's handle with the battery pack and slide the battery pack firmly
into the handle until you hear the lock snap into place as shown in
Figure 3.

FIG. 3

Toremove the battery pack from the tool, press the release buttons (M)
and firmly pull the battery pack out of the tool handle. Insert it into the
charger as described in the charger section of this manual.

12

Switch (Fig. 2)

The saw is controlled by a trigger switch (A) and lock off button (B).
The lock off button must be pressed before the trigger switch will turn
the saw on. Releasing the trigger turns the saw off.

NOTE" This tool has no provision to lock the switch on. The saw
should never be locked on by any means.

Changing Blades (Fig. 1, 4-6)

WARNING: To reduce the risk of injury, turn unit off and
disconnect it from power source before installing and removing
accessories, before adjusting or when making repairs. An

accidental start-up can cause injury.

TO INSTALL THE BLADE FIG.4

1. Place inner clamp washer
(O) on saw spindle with

the large flat surface
facing out toward the p

blade (Fig. 4, 5). F

2. Retract the lower blade /
guard (G) and place blade

on saw spindle against O
the inner clamp washer

(O), making sure that the blade will rotate in the proper direction
(the direction of the rotation arrow on the saw blade and the teeth

must point in the same direction as the direction of rotation arrow
on the saw). Do not assume that the printing on the blade will

always be facing you when properly installed. When retracting the
lower blade guard to install the blade, check the condition and

operation of the lower blade guard to assure that it is working
properly. Make sure it moves freely and does not touch the blade

or any other part, in all angles and depths of cut.

FIG. 5

SPINDLE

O

BLADE

13

3. Place outer clamp washer (P)on FIG.6
saw spindle with the large flat
surface against the blade with
beveled side facing out.

4. Thread blade clamping screw (F)
into saw spindle by hand (screw

has left-hand threads and must
be turned counterclockwise to

tighten) (Fig. 6).

5. Depress the blade lock button
(D)while turning the saw spindle LOOSEN TIGHTEN

with the blade wrench (L, Fig. 1) (clockwise) (countemtockwise)
until the blade lock engages and

the blade stops rotating.

6. Tighten the blade clamping screw firmly with the blade wrench.

NOTICE: Never engage the blade lock while saw is running, or
engage in an effort to stop the tool Never turn the saw on while the
blade lock is engaged. Serious damage to your saw will result.

TO REPLACE THE BLADE

1. To loosen the blade clamping screw (F), depress the blade lock
button (D)and turn the saw spindle with the blade wrench until the
blade lock engages and the blade stops rotating. With the blade
lock engaged, turn the blade clamping screw clockwise with the
blade wrench (screw has left-hand threads and must be turned
clockwise to loosen).

2. Remove the blade clamping screw (F)and outer clamp washer (P)
only. Remove old blade.

3. Clean any metal chips/shavings that may have accumulated in
the guard or clamp washer area and check the condition and
operation of the lower blade guard as previously outlined. Do not

lubricate this area.

4. Select the proper blade for the application (see Blades). Always
use blades that are the correct size (diameter) with the proper size
and shape center hole for mounting on the saw spindle. Always
assure that the maximum recommended speed (rpm) on the saw
blade meets or exceeds the speed (rpm) of the saw.

5. Follow steps 2 through 6 under ToInstall the Blade, making sure
that the blade will rotate in the proper direction.

LOWER BLADE GUARD

WARNING: The lower blade guard is a safety feature which

reduces the risk of serious personal injury. Never use the saw
if the lower guard is missing, damaged, misassembled or not
working properly. Do not rely on the lower blade guard to protect

you under all circumstances. Your safety depends on following

all warnings and precautions as well as proper operation of
the saw. Check lower guard for proper closing before each
use as outlined in Additional Safety Rules for Circular Saws.
If the lower blade guard is missing or not working properly,
have the saw serviced before using. To assure product safety
and reliability, repair, maintenance and adjustment should be

performed by an authorized service center or other qualified

service organization, always using identical replacement parts.

A WARNING: Under certain conditions of use, metal chips may
become imbedded in the surfaces of the lower guard, causing
the lower guard to rub against the upper guard. Check the
operation of the lower guard before each use and remove any
imbedded chips.

Blades

_WARNING: To minimize the risk of eye injury, always use eye

protection. Carbide is a hard but brittle material Foreign objects in

the workpiece such as wire or nails can cause tips to crack or break.

14

Only operate saw when proper saw blade guard is in place. Mount
blade securely in proper rotation before using, and always use a

clean, sharp blade.

Blade Diameter Teeth Application

DWA7770 5-1/2" (140 mm) 30 General purpose ferrous

metal cutting

Ifyou need assistance regarding blades, please call 1-800-4-DEWALT
(1-800-433-9258).

KICKBACK

Kickback is a sudden reaction to a pinched, bound or misaligned saw
blade, causing an uncontrolled saw to liftup and out of the workpiece

toward the operator. When the blade is pinched or bound tightly by the
kerf closing down, the blade stalls and the motor reaction drives the

unit rapidly back toward the operator. If the blade becomes twisted or
misaligned in the cut, the teeth at the back edge of the blade can dig
into the top surface of the material causing the blade to climb out of

the kerf and jump back toward the operator.
Kickback is more likely to occur when any of the following conditions

exists.

1. IMPROPER WORKPIECE SUPPORT

A. Sagging or improper lifting of the cut off piece can cause

pinching of the blade and lead to kickback (Fig. 9).

B. Cutting through material supported at the outer ends only can

cause kickback. As the material weakens it sags, closing down
the kerf and pinching the blade (Fig. 9).

C. Cutting off a cantilevered or overhanging piece of material from

the bottom up in a vertical direction can cause kickback. The
falling cut off piece can pinch the blade.

D. Cutting off long narrow strips can cause kickback. The cut off

strip can sag or twist closing the kerf and pinching the blade.

E. Snagging the lower guard on a surface below the material being

cut momentarily reduces operator control. The saw can lift
partially out of the cut increasing the chance of blade twist.

2. IMPROPER DEPTH OF CUT SETTING ON SAW

To make the most efficient cut, the blade should protrude only far
enough to expose a tooth as shown in Figure 8. This allows the

shoe to support the blade and minimizes twisting and pinching in
the material. See the section titled Cutting Depth Adjustment.

3. BLADE TWISTING (MISALIGNMENT IN CUT)

A. Pushing harder to cut can cause the blade to twist.
B.Trying to turn the saw in the cut (trying to get back on the

marked line)can cause blade twist.

C. Overreaching or operating the saw with poor body control (out

of balance), can result in twisting the blade.

D. Changing hand grip or body position while cutting can result in

blade twist.

E. Backing up the saw to clear blade can lead to twist.

4. USE OF DULL OR DIRTY BLADES

Dull blades cause increased loading of the saw. To compensate,
an operator will usually push harder which further loads the unit

and promotes twisting of the blade in the kerf. Worn blades may
also have insufficient body clearance which increases the chance

of binding and increased loading.

5. RESTARTING A CUT WITH THE BLADE TEETH JAMMED
AGAINST THE MATERIAL

The saw should be brought up to full operating speed before
starting a cut or restarting a cut after the unit has been stopped
with the blade in the kerf. Failure to do so can cause stalling and

kickback.

Any other conditions which could result in pinching, binding, twisting,
or misalignment of the blade could cause kickback. Refer to the
sections Further Safety Instructions for All Saws and Blades

15

for procedures and techniques that will minimize the occurrence of
kickback.

Depth Adjustment (Fig. 7, 8)

_ WARNING: To reduce the risk of injury, turn unit off and
disconnect it from power source before installing and removing
accessories, before adjusting or when making repairs. An

accidental start-up can cause injury.

The metal cutting saw is equipped with a pivoting shoe that allows the
operator to set the depth of cut. For the most efficient cutting action,
set the depth adjustment so that one tooth of the blade projects below
the material to be cut. This distance is from the tip of the tooth to the
bottom of the gullet in front of the tooth. This keeps blade friction at a
minimum, removes metal chips from the cut, results in cooler, faster
sawing and reduces the chance of kickback.

FIG. 7 FIG. 8

Workpiece Support (Fig. 9)

cu'n'ING SHEETS OF METAL

Figure 9 shows the correct and incorrect way to support a large sheet.
To avoid kickback, support material near the cut. Do not support it
away from the cut. If material is supported away from the cut, it will
bind the blade and cause kickback. When cutting thin strips, keep
the blade at least 1/2" (approximately 13 mm) from the edge of the
material. Thin strips may bind, causing kickback and increasing the
risk of personal injury.

FIG. 9

TO SET THE DEPTH OF CUT

1. Lay the piece of material you plan to cut along the blade as shown.

2. Note how much tooth projects beyond the material.

3. Loosen the depth adjustment lever (C) and move the shoe to
change the depth of cut.

4. Retighten the depth adjustment lever securely.

cu'n'ING RECTANGULAR METAL STOCK

Clamp the material you plan to cut to a workbench or other work
surface as shown above.

16

Cutting (Fig. 10, 11) FIG,10 X\ _.\ ',.\

1. Hold the saw securely using both

appropriate hand position. Keep
your body to one side of the line

along which you are cutting. This
will protect you from injury related

hands. Figure 10 shows

to kickback.

2. When cutting ends off of
rectangular metal stock, place

the widest part of the shoe on the part of the material that is
clamped to the workbench or other support, not on the part of the

material that will fall when the cut is made.

3. Depress the trigger switch and allow the saw to reach full speed
before the blade contacts the material to be cut (Fig. 11).

FIG. 11

4. Push the saw forward at a speed that allows the blade to cut
without laboring.

5. As you finish a cut, release the trigger and allow the blade to stop
before lifting the saw from the work. As you lift the saw, the guard
will automatically close under the blade.

CORRECTING A CUT
Should your cut begin to leave the cutting line, don't try to force it

back on. Forcing a correction can stall the saw and cause kickback.
Instead, release the switch and allow the blade to come to a complete

stop. Then, back the saw out of the cut. Restart the saw and re-enter
the cut, following the desired cutting line.
A WARNING: Do not stack materials for cutting. Do not cut through

bolts with the saw. Do not touch the blade, workpiece or metal chips
with your bare hand immediately after cutting--they are extremely

hot and may bum your skin.

Maximizing Blade Life

Toextend blade life, follow these practices:

• Do not force the blade through the metal. The saw must cut at its
own pace and at a constant rate.

• Change blades when it is no longer easy to push the saw through
the cut, when the motor isstraining, or when excessive heat is built
up in the blade.

• Keep base of the saw firmly against metal you are cutting.

• If the metal you are cutting is vibrating or shaking, clamp the
material as close to the cut as possible and slow down the cutting
rate.

MAINTENANCE

A WARNING: To reduce the risk of injury, turn unit off and
disconnect it from power source before installing and removing
accessories, before adjusting or when making repairs. An
accidental start-up can cause injury.

Replacing Sight Window (Fig. 1)

,_ WARNING: Do not operate the saw with a damaged or missing
sight window. If window is damaged or missing, have the saw

serviced at an authorized service center. If the saw is operated
without the window, metal chips could fly through the guard and
cause personal injury.

The sight window (J) must be replaced by an authorized DEWALT
service center.

17

Cleaning

i_,WARNING: Blow dirt and dust out of all air vents with clean, dry air
at least once a week. To minimize the risk of eye injury, always wear

ANSI Z87.1 approved eye protection when performing this.

_ WARNING: Never use solvents or other harsh chemicals for
cleaning the non-metallic parts of the tool These chemicals may

weaken the plastic materials used in these parts. Use a cloth
dampened only with water and mild soap. Never let any liquid get
inside the tool,"never immerse any part of the tool into a liquid.

i_ CAUTION: Do not use any cleaning fluids on the sight window to
avoid clouding it and compromising the safe operation of the saw.
Use compressed air to remove accumulated dust from the inside of
the sight window. Wear safety glasses when performing this.

CHARGER CLEANING INSTRUCTIONS
,6,WARNING: Shock hazard. Disconnect the charger from the AC

outlet before cleaning. Dirt and grease may be removed from the
exterior of the charger using a cloth or soft non-metallic brush. Do
not use water or any cleaning solutions.

Lubrication

Self lubricating ball and roller bearings are used in the tool and
relubrication is not required. However, it is recommended that, once
a year, you take or send the tool to a certified service center for a
thorough cleaning, inspection, and lubrication of the gear case.

Accessories

i_WARNING: Since accessories, other than those offered by
DEWALT, have not been tested with this product, use of such

accessories with this tool could be hazardous. To reduce the risk of
injury, only DEWALT recommended accessories should be used with

this product.

Use only 5-1/2" (140 mm) DEWALT metal cutting blades with a 20 mm

arbor.

Recommended accessories for use with your tool are available at

extra cost from your local dealer or authorized service center. If you
need assistance in locating any accessory, please contact DEWALT

Industrial Tool Co., 701 East Joppa Road, Baltimore, MD 21286, call
1-800-4-DEWALT (1-800-433-9258) or visit our website: www.dewalt.

com.

Repairs

The charger and battery pack are not serviceable.
Toassure product SAFETYand RELIABILITY, repairs, maintenance and
adjustment (including brush inspection and replacement) should be
performed by a DEWALTfactory service center, a DEWALT 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.

18

Three Year Limited Warranty

DEWALTwill 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-DEWALT (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.

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

1 YEAR FREE SERVICE

DEWALT will maintain the tool and replace worn parts caused by
normal use, for free, any time during the first year after purchase.

2 YEARS FREE SERVICE ON DEWALT BA'rrERY PACKS

DC9071, DC9091, DC9096, DC9280, DC9360, DC9180, DCB120,

DCB201 and DCB203

3 YEARS FREE SERVICE ON DEWALT BA'rI'ERY PACKS

DCB200, DCB204

DEWALT BATTERY PACKS

Product warranty voided if the battery pack is tampered with in any
way. DEWALT 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
DE-:WALTPower 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-DEWALT (1-800-433-

9258) for a free replacement.

r

DCS37251/2" (140rnm) CORDLESS

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FO_SERVICEINfOrMATIONCALL:1-e00-_-_WALT _,O_WALT.com

19

D_finitions : lignes directrices en

mati_re de s_curit_

Les definitions ci-dessous decrivent le niveau de danger pour
chaque mot-indicateur employe. Lire le mode d'emploi et porter
une attention particuliere a.ces symboles.
_,DANGER : indique une situation dangereuse imminente qui,

si elle n'est pas evitee, entraTnera la mort ou des blessures
graves.

i_AVERTISSEMENT : indique une situation potentie//ement
dangereuse qui, si e//e n'est pas evitee, pourrait entra_ner /a
mort ou des blessures graves.

_ATTENTION : indique une situation potentie//ement
dangereuse qui, si e//e n'est pas evitee, pourrait entra_ner des
blessures I_g_res ou modifies.

AVIS : indique une pratique ne posant aucun risque de

dommages corporels mais qui par contre, si rien n'est fair
pour /'eviter, pourrait poser des risques de dommages

materiels.

POUR TOUTE QUESTION OU REMARQUE AU SUJET DE CET OUTIL
OU DE TOUT AUTRE OUTIL DEWALT, COMPOSE LE NUMC:RO

SANS FRAIS : 1-800-4-DEWALT (1-800-433-9258).

_ VERTISSEMENT : afin de reduire le risque de blessures, life

le mode d'emploi de I'outil.

Avertissements de s_curit_ g_n_raux pour
les outils _lectriques

s_curit_ et toutes les directives. Le non-respect des

_k AVERTISSEMENT! life tous les avertissements de

avertissements et des directives pourrait se solder par un
choc dectrique, un incendie et/ou une blessure grave.

CONSERVER TOUS LES AVERTISSEMENTS

ET TOUTES LES DIRECTIVES POUR UN

USAGE ULTERIEUR

Le terme _ outil dectrique _cite dans les avertissements se rapporte

votre outil dectrique a alimentation sur secteur (avec ill) ou par piles

(sansfi/).

1) S#CURIT# DU LIEU DE TRAVAIL

a) Ten#" I'aire de travail propre et bien _clair_e. Les Iieux

encombres ou sombres sont propices aux accidents.

b) Ne pas faire fonctionner d'outils _lectriques clans un

milieu d_flagrant, tel qu'en presence de liquides, de
gaz ou de poussi_res inflammables. Les outi/s e/ectriques

produisent des etincelles qui pourraient enflammer la poussiere

ou les vapeurs.

c) E-Ioigner les enfants et les personnes aproximit_ pendant

I'utilisation d'un outil _lectrique. Une distraction pourrait en
faire perdre la ma_trise a I'utilisateur.

2) S#CURIT# EN MATIERE D'#LECTRICIT#

a) Les fiches des outils _lectriques doivent correspondre

la prise. Ne jamais modifier la fiche d'aucune faqon.

Ne jamais utiliser de fiche d'adaptation avec un outil

_lectrique mis a la terre. Le risque de choc electrique sera
reduit par I'utilisation de fiches non modifiees correspondant
la prise.

2O