Custom Dynamics DCS777 User manual

DCS777
Final Page Size: 172 x 240mm

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27
ENGLISH
English (original instructions)
CORDLESS COMPACT MITRE SAW
DCS777
Congratulations!
You have chosen a
DeWALT
tool. Years of experience, thorough product
development and innovation make
DeWALT
one of the most reliable
partners for professional power toolusers.
Technical Data
DCS777
Voltage V54
Type 1
XPS Yes
Power output W1750
Blade diameter mm 216
Blade bore mm 30
Max. blade speed min-1 6300
Mitre (max. positions) left and right 50°
Bevel (max. positions) left 48°
Compound mitre bevel 45°
mitre 45°
Capacities
cross-cut 90° mm 60 x 270
mitre 45° mm 60 x 190
mitre 48° mm 60 x 180
bevel 45° mm 48 x 270
bevel 48° mm 45 x 270
Overall dimensions mm 460 x 560 x 430
Weight kg 15.0
Noise values and vibration values (triax vector sum) according to EN61029:
LPA (sound pressure) dB(A) 93
LWA (acoustic power) dB(A) 103
K (acoustic power uncertainty) dB(A) 3.0
The noise emission level given in this information sheet has been measured
in accordance with a standardised test given in EN61029 and may be
used to compare one tool with another. It may be used for a preliminary
assessment of exposure.
WARNING: The declarednoise emission level represents the main
applications of the tool. However if the tool is used for different
applications, with different accessories or poorly maintained, the noise
emission may differ. This may significantly increase the exposure level
over the total working period.
An estimation of the level of exposure to vibration should also take into
account the times when the tool is switched off or when it is running
but not actually doing the job.
This may significantly reduce the exposure level over the total working
period. Identify additional safety measures to protect the operator
from the effects of vibration such as: maintain the tool and the
accessories, keep the hands warm, organisation of work patterns.
Battery pack DCB546
Battery type Li-Ion
Voltage VDC 18/54
Capacity Ah 6.0/2.0
Weight kg 1.05
Charger DCB118
Mains voltage VAC 230
Battery type 18/54 Li-Ion
Approx. charging time of
battery packs
min 22 (1.3 Ah) 22 (1.5 Ah) 30 (2.0 Ah)
45 (3.0 Ah) 60 (4.0 Ah) 75 (5.0 Ah)
60 (6.0 Ah)
Weight kg 0,66
The DCB118 charger accepts 18V Li-Ion XR and XRFLEXVOLTTM battery
packs (DCB181, DCB182, DCB183, DCB183B, DCB184, DCB184B, DCB185
and DCB546).
Fuses:
Europe 230V tools 10 Amperes. mains
U.K. & Ireland 230V tools 3 Amperes. in plugs
EC-Declaration of Conformity
Machinery Directive
Cordless Compact Mitre Saw
DCS777
DeWALT
declares that these products described under Technical Data are
in compliance with:
2006/42/EC, EN61029-1:2009 + A11:2010, EN61029-2-9:2012 + A11:2013.
These products also comply with Directive, 2014/30/EU and 2011/65/EU.
For more information, please contact
DeWALT
at the following address or
refer to the back of themanual.
The undersigned is responsible for compilation of the technical file and
makes this declaration on behalf of
DeWALT
.
Markus Rompel
Director Engineering
DeWALT
, Richard-Klinger-Straße 11,
D-65510, Idstein, Germany
20.07.2016
WARNING: To reduce the risk of injury, read the instructionmanual.
Safety Instructions
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
General Safety Rules
1. Keep work areaclear.
Cluttered areas and benches inviteinjuries.
2. Consider work areaenvironment.
Do not expose the tool to rain. Do not use the tool in damp or wet
conditions. Keep the work area well lit (250–300 Lux). Do not use the tool
where there is a risk of causing fire or explosion, e.g., in the presence of
flammable liquids andgases. Work area should be wellventilated.

28
ENGLISH
3. Guard against electricshock.
Avoid body contact with earthed surfaces (e.g., pipes, radiators, cookers
and refrigerators). When using the tool under extreme conditions (e.g.,
high humidity, when metal swarf is being produced, etc.), electric safety
can be improved by inserting an isolating transformer or a (FI) earth-
leakage circuit-breaker.
4. Keep other personsaway.
Do not let persons, especially children, not involved in the work, touch the
tool or the battery and keep them away from the workarea.
5. Store idletools.
When not in use, tools must be stored in a dry place and locked
up securely, out of reach ofchildren.
6. Do not force thetool.
It will do the job better and safer at the rate to which it wasintended.
7. Use the righttool.
Do not force small tools to do the job of a heavy duty tool. Do not use tools
for purposes not intended; for example do not use circular saws to cut tree
limbs orlogs.
8. Dressproperly.
Do not wear loose clothing or jewellery, as these can be caught in moving
parts. Non-skid footwear is recommended when working outdoors. Wear
protective hair covering to contain longhair.
9. Use protectiveequipment.
Always use safety glasses. Use a face or dust mask if working operations
create dust or flying particles. If these particles might be considerably hot,
also wear a heat-resistant apron. Wear ear protection at all times. Wear a
safety helmet at alltimes.
10. Connect dust extractionequipment.
If devices are provided for the connection of dust extraction and collecting
equipment, ensure these are connected and properlyused.
11. Securework.
Where possible use clamps or a vice to hold the work. It is safer than using
your hand and it frees both hands to operate thetool.
12. Do notoverreach.
Keep proper footing and balance at alltimes.
13. Maintain tools withcare.
Keep cutting tools sharp and clean for better and safer performance.
Follow instructions for lubricating and changing accessories. Inspect tools
periodically and if damaged have
them repaired by an authorized service facility. Keep handles
and switches dry, clean and free from oil andgrease.
14. Disconnecttools.
When not in use, before servicing and when changing accessories such as
blades, bits and cutters, disconnect tools from the powersupply.
15. Remove adjusting keys andwrenches.
Form the habit of checking to see that adjusting keys and wrenches are
removed from the tool before operating thetool.
16. Avoid unintentionalstarting.
Do not carry the tool with a finger on the switch. Be sure that the tool is in
the “off” position before pluggingin.
17. Stayalert.
Watch what you are doing. Use common sense. Do not operate the tool
when you are tired or under the influence of drugs oralcohol.
18. Check for damagedparts.
Before use, carefully check the machine to determine that it will operate
properly and perform its intended function. Check for alignment of moving
parts, binding of moving parts, breakage of parts, mounting and any
other conditions that may affect its operation. A guard or other part that
is damaged should be properly repaired or replaced by an authorized
service centre unless otherwise indicated in this instruction manual. Have
defective switches replaced by an authorized service centre.
Do not use the tool if the switch does not turn it on and off.
Never attempt any repairsyourself.
WARNING! The use of any accessory or attachment or performance
of any operation with this tool other than those recommended in this
instruction manual may present a risk of personalinjury.
19. Have your tool repaired by a qualifiedperson.
This electric tool complies relevant safety rules. Repairs should only be
carried out by qualified persons using original spare parts; otherwise this
may result in considerable danger to theuser.
Additional Safety Rules for Mitre Saws
• Do not use the saw to cut other materials than those recommended by
themanufacturer.
• Do not operate the machine without guards in position, or if guards do not
function or are not maintainedproperly.
• Ensure that the arm is securely fixed when performing bevelcuts.
• Keep the floor area around the machine level, well-maintained and free of
loose materials, e.g., chips and cut-offs.
• Select the correct blade for the material to becut.
• Use correctly sharpened saw blades. Observe the maximum speed mark on
the sawblade.
• Make sure all locking knobs and clamp handles are tight before starting
anyoperation.
• Never place either hand in the blade area when the saw is connected to
the electrical powersource.
• Never attempt to stop a machine in motion rapidly by jamming a tool or
other means against the blade; serious accidents canoccur.
• Before using any accessory consult the instruction manual.
The improper use of an accessory can causedamage.
• Use a holder or wear gloves when handling a saw blade or roughmaterial.
• Ensure that the saw blade is mounted correctly beforeuse.
• Make sure that the blade rotates in the correctdirection.
• Do not use blades of larger or smaller diameter than recommended. For
the proper blade rating refer to the technical data. Use only the blades
specified in this manual, complying with EN847-1.
• Consider applying specially designed noise-reductionblades.
• Do not use HIGH SPEED STEELblades.
• Do not use cracked or damaged sawblades.
• Do not use any abrasive or diamonddiscs.
• Use only saw blades where the marked speed is at least equal to the speed
marked on thesaw.
• Never use your saw without the kerfplate.
• Raise the blade from the kerf in the workpiece prior to releasing theswitch.
• Before each cut ensure that the machine isstable.
• Do not wedge anything against the fan to hold the motorshaft.
• The blade guard on your saw will open when the guard release lever2
ispushed.
• Never raise the blade guard manually unless the saw is switched off. The
guard can be raised by hand when installing or removing saw blades or
for inspection of thesaw.
• Check periodically that the motor air slots are clean and free ofchips.
• Replace the kerf plate whenworn.
• Remove the battery from the machine before carrying out any
maintenance work or when changing theblade.
• Never perform any cleaning or maintenance work when the machine is
still running and the head is not in the restposition.
• When fitted with LED, no exchange with different type of LED permitted.
Repairs shall only be carried out by the manufacturer or an authorized
agent.
• Connect the saw to a dust collection device when sawing wood. Always
consider factors which influence exposure of dust suchas:
ʵ type of material to be machined (chip board produces more dust
than wood);

29
ENGLISH
ʵ sharpness of the saw blade;
ʵ correct adjustment of the saw blade,
ʵ dust extractor with air velocity not less than 20 m/s.
Ensure that the local extraction as well as hoods, baffles and chutes are
properlyadjusted.
• Please be aware of the following factors influencing exposure
tonoise:
ʵ use saw blades designed to reduce the emitted noise;
ʵ use only well sharpened saw blades;
• Machine maintenance shall be conducted periodically;
• Provide adequate general or localized lighting;
• Ensure the operator is adequately trained in the use, adjustment and
operation of the machine;
• Ensure that any spacers and spindle rings are suitable for the purpose as
stated in thismanual.
• Refrain from removing any cut-offs or other parts of the workpiece from
the cutting area while the machine is running and the saw head is not in
the rest position
• Never cut workpieces shorter than 150mm.
• Without additional support the machine is designed to accept the
maximum workpiece sizeof:
ʵ Height 60mm by width 216mm by length 500mm
ʵ Longer workpieces need to be supported by suitable additional table,
e.g. DE7023. Always clamp the workpiecesafely.
• In case of an accident or machine failure, immediately turn the machine
off and disconnect machine from the powersource.
• Report the failure and mark the machine in suitable form to prevent other
people from using the defectivemachine.
• When the saw blade is blocked due to abnormal feed force during cutting,
turn the machine off and disconnect it from power supply. Remove the
workpiece and ensure that the saw blade runs free. Turn the machine on
and start new cutting operation with reduced feedforce.
• Never cut light alloy, especiallymagnesium.
• Whenever the situation allows, mount the machine to a bench using bolts
with a diameter of 8mm and 80mm inlength.
Residual Risks
The following risks are inherent to the use ofsaws:
• injuries caused by touching the rotating parts
In spite of the application of the relevant safety regulations and the
implementation of safety devices, certain residual risks cannot be avoided.
Theseare:
• Impairment ofhearing.
• Risk of accidents caused by the uncovered parts of the rotating sawblade.
• Risk of injury when changing the unprotected sawblade.
• Risk of squeezing fingers when opening theguards.
• Health hazards caused by breathing dust developed when sawing wood,
especially oak, beech andMDF.
The following factors increases the risk of breathingproblems:
• No dust extractor connected when sawing wood
• Insufficient dust extraction caused by uncleaned exhaust filters
Electrical Safety
The electric motor has been designed for one voltage only. Always check
that the battery pack voltage corresponds to the voltage on the rating
plate. Also make sure that the voltage of your charger corresponds to that
of yourmains.
Your
DeWALT
charger is double insulated in accordance with
EN60335; therefore no earth wire isrequired.
WARNING: 115 V units have to be operated via a fail-safe
isolating transformer with an earth screen between the primary and
secondary winding.
If the supply cord is damaged, it must be replaced by a specially prepared
cord available through the
DeWALT
serviceorganisation.
Mains Plug Replacement
(U.K. & Ireland Only)
If a new mains plug needs to be fitted:
• Safely dispose of the oldplug.
• Connect the brown lead to the live terminal in theplug.
• Connect the blue lead to the neutralterminal.
WARNING: No connection is to be made to the earthterminal.
Follow the fitting instructions supplied with good quality plugs.
Recommended fuse: 3A.
Using an Extension Cable
An extension cord should not be used unless absolutely necessary. Use an
approved extension cable suitable for the power input of your charger (see
Technical Data). The minimum conductor size is 1mm2; the maximum
length is30m.
When using a cable reel, always unwind the cablecompletely.
SAVE THESE INSTRUCTIONS
Chargers
DeWALT
chargers require no adjustment and are designed to be as easy as
possible tooperate.
Important Safety Instructions for All Battery
Chargers
SAVE THESE INSTRUCTIONS: This manual contains important safety
and operating instructions for compatible battery chargers (refer to
TechnicalData).
• Before using charger, read all instructions and cautionary markings on
charger, battery pack, and product using batterypack.
WARNING: Shock hazard. Do not allow any liquid to get inside
charger. Electric shock mayresult.
WARNING: We recommend the use of a residual current device with a
residual current rating of 30mA orless.
CAUTION: Burn hazard. To reduce the risk of injury, charge only
DeWALT
rechargeable batteries. Other types of batteries may burst
causing personal injury anddamage.
CAUTION: Children should be supervised to ensure that they do not
play with theappliance.
NOTICE: 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, 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.
• Pull 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.

30
ENGLISH
• 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.
• 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—have them
replacedimmediately.
• Do not operate charger if it has received a sharp blow, been
dropped, or otherwise damaged in any way. Take it to an authorised
servicecentre.
• Do not disassemble charger; take it to an authorised service centre
when service or repair is required. Incorrect reassembly may result in a
risk of electric shock, electrocution orfire.
• In case of damaged power supply cord the supply cord must be replaced
immediately by the manufacturer, its service agent or similar qualified
person to prevent anyhazard.
• 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 230V household
electrical power. Do not attempt to use it on any other voltage. This
does not apply to the vehicularcharger.
Charging a Battery (Fig. C)
1. Plug the charger into an appropriate outlet before inserting
batterypack.
2. Insert the battery pack 27 into the charger, making sure the battery
pack is fully seated in the charger. The red (charging) light will blink
repeatedly indicating that the charging process hasstarted.
3. The completion of charge will be indicated by the red light remaining
ON continuously. The battery pack is fully charged and may be used
at this time or left in the charger. To remove the battery pack from the
charger, push the battery release button 28 on the batterypack.
NOTE: To ensure maximum performance and life of lithium-ion battery
packs, charge the battery pack fully before firstuse.
Charger Operation
Refer to the indicators below for the charge status of the batterypack.
Charge Indicators
Charging
Fully Charged
Hot/Cold Pack Delay*
*The red light will continue to blink, but a yellow indicator light will be
illuminated during this operation. Once the battery pack has reached an
appropriate temperature, the yellow light will turn off and the charger will
resume the chargingprocedure.
The compatible charger(S) will not charge a faulty battery pack. The charger
will indicate faulty battery by refusing to light or by displaying problem
pack or charger blinkpattern.
NOTE: This could also mean a problem with acharger.
If the charger indicates a problem, take the charger and battery pack to be
tested at an authorised servicecentre.
Hot/Cold Pack Delay
When the charger detects a battery pack that is too hot or too cold, it
automatically starts a Hot/Cold Pack Delay, suspending charging until the
battery pack has reached an appropriate temperature. The charger then
automatically switches to the pack charging mode. This feature ensures
maximum battery packlife.
A cold battery pack will charge at a slower rate than 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.
The DCB118 charger is equipped with an internal fan designed to cool
the battery pack. The fan will turn on automatically when the battery pack
needs to be cooled. Never operate the charger if the fan does not operate
properly or if ventilation slots are blocked. Do not permit foreign objects to
enter the interior of thecharger.
Electronic Protection System
XR Li-Ion tools are designed with an Electronic Protection System
that will protect the battery pack against overloading, overheating or
deepdischarge.
The tool will automatically turn off if the Electronic Protection System
engages. If this occurs, place the lithium-ion battery pack on the charger
until it is fullycharged.
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, and away from a corner or other obstructions which may
impede air flow. Use the back of the charger as a template for the location
of the mounting screws on the wall. Mount the charger securely using
drywall screws (purchased separately) at least 25.4mm long with a screw
head diameter of 7–9mm, screwed into wood to an optimal depth leaving
approximately 5.5mm of the screw exposed. Align the slots on the back of
the charger with the exposed screws and fully engage them in theslots.
Charger Cleaning Instructions
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. Never let any liquid get inside the
tool; never immerse any part of the tool into aliquid.
Battery Packs
Important Safety Instructions for All Battery Packs
When ordering replacement battery packs, be sure to include catalog
number andvoltage.
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.
• 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 40 ˚C (104 ˚F) (such as outside
sheds or metal buildings in summer).
• 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.

31
ENGLISH
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 persists, seek medicalattention.
WARNING: Burn hazard. Battery liquid may be flammable if exposed
to spark orflame.
WARNING: 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 centre 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.
CAUTION: When not in use, place tool on its side on a stable
surface 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.
Transportation
WARNING: Fire hazard. Transporting batteries can possibly cause
fire if the battery terminals inadvertently come in contact with
conductive materials. When transporting batteries, make sure that the
battery terminals are protected and well insulated from materials that
could contact them and cause a shortcircuit.
DeWALT
batteries comply with all applicable shipping regulations
as prescribed by industry and legal standards which include UN
Recommendations on the Transport of Dangerous Goods; International Air
Transport Association (IATA) Dangerous Goods Regulations, International
Maritime Dangerous Goods (IMDG) Regulations, and the European
Agreement Concerning The International Carriage of Dangerous Goods by
Road (ADR). 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.
In most instances, shipping a
DeWALT
battery pack will be excepted
from being classified as a fully regulated Class 9 Hazardous Material. In
general, only shipments containing a lithium-ion battery with an energy
rating greater than 100 Watt Hours (Wh) will require being shipped
as fully regulated Class 9. All lithium-ion batteries have the Watt Hour
rating marked on the pack. Furthermore, due to regulation complexities,
DeWALT
does not recommend air shipping lithium-ion battery packs alone
regardless of Watt Hour rating. Shipments of tools with batteries (combo
kits) can be air shipped as excepted if the Watt Hour rating of the battery
pack is no greater than 100Whr.
Regardless of whether a shipment is considered excepted or fully regulated,
it is the shipper's responsibility to consult the latest regulations for
packaging, labeling/marking and documentationrequirements.
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. It is
the buyer’s responsibility to ensure that its activities comply with the
applicableregulations.
Transporting the FLEXVOLTTM Battery
The
DeWALT
FLEXVOLTTM battery has two modes: Use andTransport.
Use Mode: When the FLEXVOLTTM battery stands alone or is in a
DeWALT
18V product, it will operate as an 18V battery. When the FLEXVOLTTM
battery is in a 54V or a 108V (two 54V batteries) product, it will operate as a
54Vbattery.
Transport Mode: When the cap is attached to the FLEXVOLTTM battery, the
battery is in transport mode. Keep the cap forshipping.
When in Transport mode, strings of cells are
electrically disconnected within the pack
resulting in 3 batteries with a lower Watt
hour (Wh) rating as compared to 1 battery
with a higher Watt hour rating. This increased quantity of 3 batteries with
the lower Watt hour rating can exempt the pack from certain shipping
regulations that are imposed upon the higher Watt hour batteries.
Transport Wh rating indicates 3x36
Wh, meaning 3 batteries of 36 Watt
hours each. The Use Wh rating
indicates 108 Watt hours (1 battery
implied).
Storage Recommendations
1. The best storage place is one that is cool and dry away from direct
sunlight and excess heat or cold. For optimum battery performance and
life, store battery packs at room temperature when not inuse.
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.
Labels on Charger and Battery Pack
In addition to the pictographs used in this manual, the labels on the charger
and the battery pack may show the following pictographs:
Read instruction manual beforeuse.
See Technical Data for chargingtime.
Do not probe with conductiveobjects.
Do not charge damaged batterypacks.
Do not expose to water.
Have defective cords replacedimmediately.
Charge only between 4 ˚C and 40 ˚C.
Only for indooruse.
Discard the battery pack with due care for theenvironment.
Charge
DeWALT
battery packs only with designated
DeWALT
chargers. Charging battery packs other than the designated
DeWALT
batteries with a
DeWALT
charger may make them burst
or lead to other dangeroussituations.
Do not incinerate the batterypack.
Use: Use without transportation cap, Wh rating indicates 108
Wh (1 battery with 108 Wh).
Transport: Transport with built-in transport cap, Wh rating
indicates 3 x 36 Wh (3batteries of 36 Wh).
Example of Use and Transport Label Marking

32
ENGLISH
Battery Type
The DCS777 operates on a 54 volt batterypack.
These battery packs may be used: DCB546. Refer to Technical Data for
moreinformation.
Package Contents
The packagecontains:
1 Partly assembled machine
2 hex key (4mm and 6mm)
1 216mm TCT saw blade
1 Material clamp
2 Battery packs (T2 model)
1 Charger (T2 model)
1 Instruction manual
• Check for damage to the tool, parts or accessories which may have
occurred duringtransport.
• Take the time to thoroughly read and understand this manual prior
tooperation.
Markings on Tool
The following pictograms are shown on the tool:
Read instruction manual beforeuse.
Wear earprotection.
Wear eyeprotection.
Visible radiation. Do not stare intolight.
Carrying point
Date Code Position (Fig. B)
The Date Code57 , which also includes the year of manufacture, is printed
into thehousing.
Example:
2016 XX XX
Description (Fig. A–C, E)
WARNING: Never modify the power tool or any part of it. Damage or
personal injury couldresult.
1 On/off switch
2 Guard lock up release lever
3 Carrying handle
4 Fixed upper guard
5 Outer flange
6 Blade bolt
7 Lower blade guard
8 Saw blade
9 Sliding fence lock knob
10 Fixed table
11 Kerf plate
12 Mitre arm
13 Mitre latch
14 Rotating table/mitre arm
15 Mitre scale
16 Sliding fence
17 Material clamp
18 Traverse lock
19 Guard lock up hook
20 Bevel clamp handle
21 Bevel scale
22 Bench mounting holes
23 Lock down button
24 Traverse bars
25 Saw head
26 Hex keys
27 Battery pack
28 Battery pack release button
29 Fuel gauge button
30 Lock off switch
31 Override button
32 Carrying handle (left and right)
33 Inner flange (Fig. E)
34 Dust extraction port
35 XPS Button
Intended Use
Your
DeWALT
Cordless Compact Mitre Saw has been designed for
professional cutting wood, wood products, aluminum and plastics. It
performs the sawing operations of cross-cutting, bevelling and mitring
easily, accurately andsafely.
This unit is designed for use with a nominal blade diameter 216mm carbide
tipblade.
DO NOT use under wet conditions or in presence of flammable liquids
orgases.
These miter saws are professional powertools.
DO NOT let children come into contact with the tool. Supervision is
required when inexperienced operators use thistool.
WARNING! Do not use the machine for purposes other thanintended.
• Young children and the infirm. This appliance is not intended for use
by young children or infirm persons without supervision.
• This product is not intended for use by persons (including children)
suffering from diminished physical, sensory or mental abilities; lack of
experience, knowledge or skills unless they are supervised by a person
responsible for their safety. Children should never be left alone with
thisproduct.
ASSEMBLY
WARNING: To reduce the risk of serious personal injury, turn
machine off and disconnect battery pack before making any
adjustments or removing/installing attachments or accessories.
An accidental start-up can causeinjury.
WARNING: Use only
DeWALT
battery packs andchargers.
Unpacking
The motor and guards are already assembled onto thebase.
Inserting and Removing the Battery Pack from the
Tool (Fig. A–C)
NOTE: Make sure your battery pack 27 is fullycharged.
To Install the Battery Pack into the Tool
1. Align the battery pack 27 with the rails inside the tool’s handle (Fig. A).
2. Slide it into the handle until the battery pack is firmly seated in the tool
and ensure that you hear the lock snap intoplace.
To Remove the Battery Pack from the Tool
1. Press the release button 28 and firmly pull the battery pack out of the
toolhandle.
2. Insert battery pack into the charger as described in the charger section
of thismanual.
Fuel Gauge Battery Packs (Fig. C)
Some
DeWALT
battery packs include a 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 29. 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.

33
ENGLISH
Bench Mounting (Fig. B)
1. Holes22 are provided in all four feet to facilitate bench mounting.
Bolts with a diameter of 8mm and 80mm in length is suggested.
Always mount your saw firmly to prevent movement. To enhance the
portability, the tool can be mounted to a piece of 12.5mm or thicker
plywood which can then be clamped to your work support or moved to
other job sites andreclamped.
2. When mounting your saw to a piece of plywood, make sure that the
mounting screws do not protrude from the bottom of the wood.
The plywood must sit flush on the work support. When clamping the
saw to any work surface, clamp only on the clamping bosses where
the mounting screw holes are located. Clamping at any other point will
interfere with the proper operation of thesaw.
3. To prevent binding and inaccuracy, be sure the mounting surface is
not warped or otherwise uneven. If the saw rocks on the surface, place
a thin piece of material under one saw foot until the saw is firm on the
mountingsurface.
Mounting the Saw Blade (Fig. A, D, E)
WARNING: To reduce the risk of injury, turn unit off and
disconnect machine from power source before installing and
removing accessories, before adjusting or changing set-ups
or when making repairs. Be sure the trigger switch is in the OFF
position. An accidental
start-up can causeinjury.
WARNING: The teeth of a new blade are very sharp and can
bedangerous.
WARNING: Be aware the saw blade shall be replaced in the described
way only. Only use saw blades as specified under Technical Data;
Cat.no.: DT4320 issuggested.
1. Insert the 6mm hex key26 into the opposite location of the blade
shaft and hold it(Fig.D).
2. Use second hex key as shown in Figure D as spindlelock.
3. Loosen the blade bolt6 by turning clockwise. Remove the blade bolt
and the outer flange5 .
4. Press the lower guard lock up release lever2 to raise the lower blade
guard7 and remove the saw blade8 .
5. Install the new saw blade onto the shoulder provided on the inner
flange33 making sure that the teeth at the bottom edge of the blade
are pointing towards the fence (away from the operator).
6. Replace the outer flange5 , making sure that the location lugs36 are
engaged correctly, one on each side of the motorshaft.
7. Tighten the blade bolt6 by turning anti-clockwise while holding the
6mm hex key26 engaged with your other hand (Fig.D).
ADJUSTMENTS
WARNING: To reduce the risk of serious personal injury, turn
machine off and disconnect battery pack before making any
adjustments or removing/installing attachments or accessories.
An accidental start-up can causeinjury.
Your mitre saw was accurately adjusted at the factory. If readjustment
due to shipping and handling or any other reason is required, follow the
steps below to adjust your saw. Once made, these adjustments should
remainaccurate.
Adjusting the Traverse Bars for Constant Cutting
Depth (Fig. A, B, F, H)
The blade must run at a constant cutting depth along the full length of the
table and must not touch the fixed table at the rear of the slot or at the front
of the rotating arm. To achieve this, the traverse arms must be perfectly
parallel to the table when the saw head is fullydepressed.
1. Press the lower guard lock up release lever2 (Fig.A).
2. Press the saw head fully to the rear position and measure the height
from the rotating table14 to the bottom of the outer flange5 (Fig.F).
3. Turn the saw head traverse lock18 (Fig.B).
4. Keeping the saw head fully depressed, pull the head to the end of
itstravel.
5. Measure the height indicated in figureF again. Both values should
beidentical.
6. If adjustment is required, proceed as follows (Fig.H):
a. Loosen the locknut37 in the bracket38 and adjust the screw39
as required, proceeding in smallsteps.
b. Tighten the locknut37 .
WARNING: Always check that the blade does not touch the table at
the rear of the slot or at the front of the rotating arm at 90° vertical
and 45° bevel positions. Do not switch on before having checkedthis!
Adjusting the Fence (Fig. I)
Turn the sliding fence lock knob9 anti-clockwise to loosen. Move the
sliding fence16 to a position that avoids the blade cuts it,then tighten the
fence lock knob by turningclockwise.
Checking and Adjusting the Blade to the Fence
(Fig. B, J, K)
1. Slacken the mitre latch13 .
2. Place your thumb on the mitre arm12 and squeeze the mitre latch13
to release the rotating table/mitre arm14 .
3. Swing the mitre arm until the latch locates it at the 0° mitreposition.
4. Pull down the head and lock it in this position using the lock down
button23 .
5. Check that the two 0° markings40 on the mitre scale15 are
justvisible.
6. Place a square41 against the left side of the fence16 and blade8 .
WARNING: Do not touch the tips of the blade teeth with thesquare.
7. If adjustment is required, proceed asfollows:
a. Loosen the screws42 and move the scale/mitre arm assembly left
or right until the blade is at 90° to the fence as measured with the
square (Fig.J).
b. Retighten the screws42 .
Checking and Adjusting the Blade to the Table
(Fig. L–N)
1. Loosen the bevel clamp handle20 (Fig.L).
2. Press the saw head to the right to ensure it is fully vertical and tighten
the bevel clamphandle.
3. Place a set square41 on the table and up against the blade8 (Fig.M).
WARNING: Do not touch the tips of the blade teeth with thesquare.
4. If adjustment is required, proceed asfollows:
a. Loosen the bevel clamp handle20 and turn the vertical position
adjustment stop screw43 in or out until the blade is at 90° to the
table as measured with thesquare.
b. If the bevel pointer44 does not indicate zero on the bevel
scale21 , loosen the screws45 that secure the scale and move the
scale asnecessary.
Checking and Adjusting the Bevel Angle (Fig. A, L, N)
The bevel override allows the max. bevel angle to be set at 45° or 48°
asrequired.
• Left = 45°
• Right = 48°
1. Make sure the override knob46 is located in the leftposition.
2. Loosen the bevel clamp handle20 and move the saw head to theleft.

34
ENGLISH
3. This is the 45° bevelposition.
4. If adjustment is required, turn the stopscrew47 in or out as necessary
until the pointer44 indicates 45°.
WARNING: The guide grooves can become clogged with sawdust. Use
a stick or some low pressure air to clear the guidegrooves.
Prior to Operation
WARNING:
• Install the appropriate saw blade. Do not use excessively worn
blades. The maximum rotation speed of the tool must not exceed
that of thesawblade.
• Do not attempt to cut excessively smallpieces.
• Allow the blade to cut freely. Do notforce.
• Allow the motor to reach full speed beforecutting.
• Make sure all locking knobs and clamp handles aretight.
• Secure theworkpiece.
• Although this saw will cut wood and many nonferrous
materials,these operating instructions refer to the cutting of wood
only. The sameguide-lines apply to the other materials. Do not cut
ferrous (iron and steel) materials or masonry with this saw! Do not
use any abrasivediscs!
• Make sure to use the kerf plate. Do not operate the machine if the
kerf slot is wider than 10mm.
• Placing the workpiece on a piece of wood will increase the
capacities to 300mm.
OPERATION
Instructions for Use
WARNING: Always observe the safety instructions and
applicableregulations.
WARNING: To reduce the risk of serious personal injury, turn
tool off and disconnect battery pack before making any
adjustments or removing/installing attachments or accessories.
An accidental start-up can causeinjury.
The attention of UK users is drawn to the “woodworking machines regulations
1974” and any subsequentamendments.
Ensure the machine is placed to satisfy your ergonomic conditions in terms
of table height and stability. The machine site shall be chosen so that the
operator has a good overview and enough free surrounding space around
the machine that allows handling of the workpiece without anyrestrictions.
To reduce effects of increased vibration, make sure the environment is not
too cold, the machine and accessory are well maintained and the workpiece
size is suitable for thismachine.
Switching On and Off (Fig. A)
The lock off switch30 located on the the on/off trigger switch1 must be
flipped in order for the saw to turnon.
1. To run the tool, flip the lock off switch 30 and press the on/off trigger
switch1 .
2. To stop the tool, release thetrigger switch. The lock off switch will
re-engageautomatically.
Use of XPS™ LED Worklight System (Fig. A, R)
NOTE: The mitre saw must be connected to a powersource.
The XPS™ LED Worklight System is activated by engaging the trigger or
pressing the XPS button 35 on top of the saw housing.
To cut through an existing pencil line on a piece ofwood:
1. With the XPS light on, pull down on the operating handle3 to bring
the saw blade8 close to the wood. The shadow of the blade will
appear on thewood.
2. Align the pencil line with the edge of the blade’s shadow. You may
have to adjust the mitre or bevel angles in order to match the pencil
lineexactly.
Your saw is equipped with a battery fault feature. The XPS™ worklight
begins to flash when the battery is near the end of its useful charge, or
when the battery is too hot. Charge the battery prior to continuing cutting
applications. Refer to Charging A Battery for battery charginginstructions.
Body and Hand Position
Proper positioning of your body and hands when operating the mitre saw
will make cutting easier, more accurate andsafer.
WARNING:
• Never place your hands near the cuttingarea.
• Place your hands no closer than 150mm from theblade.
• Hold the workpiece tightly to the table and the fence when cutting.
Keep your hands in position until the switch has been released and
the blade has completelystopped.
• Always make dry runs (without power) before finish
cuts so that you can check the path of theblade.
• Do not cross yourhands.
• Keep both feet firmly on the floor and maintain properbalance.
• As you move the saw arm left and right, follow it and stand slightly
to the side of the sawblade.
Basic Saw Cuts
Vertical straight cross cut (Fig. A, O)
NOTE: Use 216mm saw blades with 30mm arbor holes to obtain the
desired cuttingcapacities.
1. Slacken the mitre latch13 and subsequently lift itup.
2. Engage the mitre latch13 at the 0° position and fasten the mitrelatch.
3. Place the wood to be cut against the fence16 .
4. Take hold of the carrying handle3 and press the guard lock up release
lever2 to release the guard. Extend head of the saw all the wayout.
5. Press the trigger switch1 to start themotor.
6. Depress the head to allow the blade to cut through the timber and
enter the plastic kerfplate11 .
7. When the head is fully depressed, slowly push it back across to
complete thecut.
8. After completing the cut, release the switch and wait for the saw blade
to come to a complete standstill before returning the head to its upper
restposition.
WARNING:
• The lower blade guard is designed to close quickly
when the lever2 is released. If it does not close within
1 second, have the saw serviced by an authorized
DeWALT
repairagent.
Vertical mitre cross-cut (Fig. A, P)
1. Squeeze the mitre latch13 . Move the arm left or right to the
requiredangle.
2. The mitre latch will automatically locate at 0°, 15°, 22.5°, 31.62°, 45° and
50° both left and right. If any intermediate angle is required hold the
head firmly and lock by fastening the mitrelatch.
3. Always ensure that the mitre lock lever is locked tightly beforecutting.
4. Proceed as for a vertical straight cross-cut.
WARNING: When mitring the end of a piece of wood
with a small off-cut, position the wood to ensure that the off-cut is to
the side of the blade with the greater angle to the fence, i.e.:
• left mitre, off-cut to the right
• right mitre, off-cut to the left

35
ENGLISH
Bevel cross-cuts (Fig. L, Q)
Bevel angles can be set from 0° to 48° to the left. Bevels up to 45° can be cut
with the mitre arm set between zero and a maximum of 45° mitre position
right orleft.
1. Loosen the bevel clamp handle20 and set the bevel asdesired.
2. Set the override button31 ifrequired.
3. Hold the head firmly and do not allow it tofall.
4. Tighten the bevel clamp handle20 firmly.
5. Proceed as for a vertical straight cross-cut.
Quality of Cut
The smoothness of any cut depends on a number of variables, i.e. the
material being cut. When smoothest cuts are desired for moulding
andother precision work, a sharp (60-tooth carbide) blade and a slower,
even cutting rate will produce the desiredresults.
WARNING: Ensure that the material does not creep while cutting;
clamp it securely in place. Always let the blade come to a full stop
before raising the arm. If small fibres of wood still split out at the rear
of the workpiece, stick a piece of masking tape on the wood where
the cut will be made. Saw through the tape and carefully remove tape
whenfinished.
Clamping the Workpiece (Fig. T)
WARNING: Always use a materialclamp.
For best results use the material clamp17 made for use with yoursaw.
To Install clamp
1. Insert it into the hole behind the fence. The clamp17 should be facing
toward the back of the mitre saw. Ensure the groove on the clamp rod
is fully inserted into the base of the mitre saw. If the groove is visible,
the clamp will not besecure.
2. Rotate the clamp 180º toward the front of the mitresaw.
3. Loosen the knob to adjust the clamp up or down, then use the fine
adjust knob to firmly clamp theworkpiece.
NOTE: Place the clamp on the right side of the base when beveling.
ALWAYS MAKE DRY RUNS (UNPOWERED) BEFORE FINISH CUTS TO CHECK
THE PATH OF THE BLADE. ENSURE THE CLAMP DOES NOT INTERFERE WITH
THE ACTION OF THE SAW ORGUARDS.
Compound Mitre (Fig. S)
This cut is a combination of a mitre and a bevel cut. This is the type of cut
used to make frames or boxes with slanting sides like the one shown in
figureS.
WARNING: If the cutting angle varies from cut to cut, check that
the bevel clamp handle and the mitre clamping knob are securely
tightened. These must be tightened after making any changes in bevel
ormitre.
• The chart shown below will assist you in selecting the proper bevel and
mitre settings for common compound mitrecuts.
• To use the chart, select the desired angle “A” (Fig.S) of your project
and locate that angle on the appropriate arc in the chart. From that
point follow the chart straight down to find the correct bevel angle and
straight across to find the correct mitreangle.
Set this miter angle on saw
Angle of side of box (angle ”A”)
Set this bevel angle on saw
1. Set your saw to the prescribed angles and make a few trialcuts.
2. Practice fitting the cut piecestogether.
Example: To make a four-sided box with 25° exterior angles (angle “A”)
(Fig.S), use the upper right arc. Find 25° on the arc scale. Follow the
horizontal intersecting line to either side to get the mitre angle setting
on the saw (23°). Likewise follow the vertical intersecting line to the top
or bottom to get the bevel angle setting on the saw (40°). Always try
cuts on a few scrap pieces of wood to verify the settings on thesaw.
WARNING: Never exceed the compound mitre limits of 45° bevel with
45° left or rightmitre.
Dust Extraction (Fig. A, G)
WARNING: Whenever possible, connect a dust extraction device
designed in accordance with the relevant regulations regarding
dustemission.
Connect a dust collection device designed in accordance with the relevant
regulations. The air velocity of externally connected systems shall be 20m/s
+/- 2 m/s. Velocity to be measured in the connection tube at the point of
connection, with the tool connected but notrunning.
NOTE: The DWV9000 twist-lock quick connector48 is recommended as an
optional accessory to connect to the dust extractiondevice.
Observe the relevant regulations in your country for the materials to
beworked.
The vacuum cleaner must be suitable for the material beingworked.
When vacuuming dry dust that is especially detrimental to health or
carcinogenic, use a special vacuumcleaner.
Transporting (Fig. A, B)
WARNING: In order to conveniently carry the mitre saw, the base is
provided with two hand indentations32 . Never use guards to lift or
transport the mitresaw.
1. To transport the saw, set the bevel and mitre positions to 0°.
2. Push the saw head all the wayback.
3. Press the lower guard lock up release lever2 (Fig.A).
4. Press the head down and press the lock down button23 (Fig.B).
5. Bring the saw blade to rest position and press the traverse lock18 .
8 SIDED BOX
6 SIDED BOX
SQUARE BOX

36
ENGLISH
MAINTENANCE
Your
DeWALT
power tool has been designed to operate over a long period
of time with a minimum of maintenance. Continuous satisfactory operation
depends upon proper tool care and regularcleaning.
WARNING: To reduce the risk of serious personal injury, turn
machine off and disconnect battery pack before making any
adjustments or removing/installing attachments or accessories.
An accidental start-up can causeinjury.
WARNING: If the saw blade is worn replace it with a new sharpblade.
Lubrication
Your power tool requires no additionallubrication.
Cleaning
Before use, carefully check the upper blade guard, movable lower blade
guard as well as the dust extraction tube to determine that it will operate
properly. Ensure that chips, dust or workpiece particle cannot lead to
blockage of one of thefunctions.
In case of workpiece fragments jammed between saw blade and guards
disconnect the machine from the power supply and follow the instructions
given in section Mounting the saw blade. Remove the jammed parts and
reassembling the sawblade.
WARNING: Blow dirt and dust out of the main housing with dry air
as often as dirt is seen collecting in and around the air vents. Wear
approved eye protection and approved dust mask when performing
thisprocedure.
WARNING: Never use solvents or other harsh chemicals for cleaning
the non-metallic parts of the tool. These chemicals may weaken the
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.
WARNING: To reduce the risk of injury, regularly clean the
tabletop.
WARNING: To reduce the risk of injury, regularly clean the dust
collectionsystem.
Optional Accessories
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.
Range of saw blades available (recommended
blades)
Type of blade Blade dimensions
(diameter x bore x no. of teeth)
Usage
DT4310 series 40 216x30x24 For general purpose, ripping and cross-
cutting of wood and plastics
DT4286 series 40 216x30x80 TCG for use with aluminum
DT4320 series 60 216x30x48 ATB for fine cutting of manmade and natural
wood
DT4350 series 60 216x30x60 TCG for extra fine cutting of manmade and
natural wood
DT99568-QZ 216x30x24 24T Flexvolt blade for general purpose,
ripping and cross cutting
DT99569-QZ 216x30x36 36T Flexvolt blade for fine cutting
DT99570-QZ 216x30x60 60T Flexvolt blade for ultra-fine cutting
Consult your dealer for further information on the appropriateaccessories.
Protecting the Environment
Separate collection. Products and batteries marked with this
symbol must not be disposed of with normal householdwaste.
Products and batteries contain materials that can be recovered or
recycled reducing the demand for raw materials. Please recycle
electrical products and batteries according to local provisions. Further
information is available at www.2helpU.com.
Rechargeable Battery Pack
This long life battery pack must be recharged when it fails to produce
sufficient power on jobs which were easily done before. At the end of its
technical life, discard it with due care for our environment:
• Run the battery pack down completely, then remove it from thetool.
• Li-Ion cells are recyclable. Take them to your dealer or a local recycling
station. The collected battery packs will be recycled or disposed
ofproperly.