DEWALT DCS777 Cordless FLEXVOLT Mitre Saw Instruction Manual

October 27, 2023
Dewalt

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DCS777 Cordless FLEXVOLT Mitre Saw
Instruction Manual

DCS777 Cordless FLEXVOLT Mitre Saw

DEWALT DCS777 Cordless FLEXVOLT Mitre SawDEWALT
DCS777 Cordless FLEXVOLT Mitre Saw - figDEWALT DCS777 Cordless FLEXVOLT Mitre Saw - fig
1DEWALT DCS777 Cordless FLEXVOLT Mitre Saw - fig
2DEWALT DCS777 Cordless FLEXVOLT Mitre Saw - fig
3

CORDLESS COMPACT MITRE SAW DCS777

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Technical Data

| | DCS777
---|---|---
Voltage| VDC| 54
Type| | 2
XPS| | Yes
Power output| W| 1750
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
mitre| 45°
45°
Capacities| |
cross-cut 90°| mm| 60 x 270
mitre 45°| mm| 60 x 190
mitre 50°| mm| 60 x 170
bevel 45°| mm| 48 x 270
bevel 48°| mm| 45 x 270
Overall dimensions| mm| 460 x 560 x 430
Weight| kg| 15
Noise values and/or vibration values (triax vector sum) according to EN62841:
Lpa   (emission sound pressure level)| dB(A)| 90
Lwa  (sound power level)| dB(A)| 105
K (uncertainty for the given sound level)| dB(A)| 3

The vibration and/or noise emission level given in this information sheet has been measured in accordance with a standardised test given in EN62841 and may be used to compare one tool with another. It may be used for a preliminary assessment of exposure.
WARNING: The declared vibration and/or noise 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 vibration and/or 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 and/or noise 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 and/or noise such as: maintain the tool and the accessories, keep the hands warm (relevant for vibration), organisation of work patterns.
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, EN62841-1:2015 +AC:2015; EN62841-3-9:2015 +AC:2016 +A11:2017.
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
Vice President of Engineering, PTE-Europe
DeWALT, Richard-Klinger-Straße 11,
D-65510, Idstein, Germany
20.09.2019
WARNING: To reduce the risk of injury, read the instruction manual.

Definitions: Safety Guidelines

The definitions below describe the level of severity for each signal word.
Please read the manual and pay attention to these symbols.
DANGER: Indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury.
WARNING: Indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury.
CAUTION: Indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate injury.
NOTICE: Indicates a practice not related to personal injury which, if not avoided, may result in property damage.
Denotes risk of electric shock.
****Denotes risk of fire.

Batteries Chargers/Charge Times (Minutes)
Cat # VDC
DCB132 DCB119
DCB546 18/54
DCB547 18/54
DCB548 18/54

*Date code 201811475B or later

GENERAL POWER TOOL SAFETY WARNINGS

WARNING: Read all safety warnings, instructions, illustrations and specifications provided with this power tool. Failure to followall instructions listed below may result in electric shock, fire and/or serious injury.

SAVE ALL WARNINGS AND INSTRUCTIONS FOR FUTURE REFERENCE.

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

  1. Work Area Safety
    a ) Keep work area clean and well lit. Cluttered or dark areas invite accidents.
    b ) Do not operate power tools in explosive atmospheres, such as in the presence of flammable liquids, gases or dust. Power tools create sparks which may ignite the dust or fumes.
    c ) Keep children and bystanders away while operating a power tool. Distractions can cause you to lose control.

  2. Electrical Safety
    a ) Power tool plugs must match the outlet. Never modify the plug in any way. Do not use any adapter plugs with earthed (grounded) power tools. Unmodified plugs and matching outlets will reduce risk of electric shock.
    b ) Avoid body contact with earthed or grounded surfaces such as pipes, radiators, ranges and refrigerators. There is an increased risk of electric shock if your body is earthed or grounded.
    c ) Do not expose power tools to rain or wet conditions. Water entering a power tool will increase the risk of electric shock.
    d ) Do not abuse the cord. Never use the cord for carrying, pulling or unplugging the power tool. Keep cord away from heat, oil, sharp edges or moving parts. Damaged or entangled cords increase the risk of electric shock.
    e ) When operating a power tool outdoors, use an extension cord suitable for outdoor use. Use of a cord suitable for outdoor use reduces the risk of electric shock.
    f ) If operating a power tool in a damp location is unavoidable, use a residual current device (RCD) protected supply. Use of an RCD 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 a 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 offposition 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 energising 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 jewellery. Keep your hair and clothing away from moving parts. Loose clothes, jewellery 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.
    h ) Do not let familiarity gained from frequent use of tools allow you to become complacent and ignore tool safety principles. A careless action can cause severe injury within a fraction of a second.

  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 remove the battery pack, if detachable, 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 and accessories. Check for misalignment or binding of moving parts, breakage of parts and any other condition that may affect the power tool’s operation. If damaged, have the power tool repaired before use. Many accidents are caused by poorly maintained power tools.
    f ) Keep cutting tools sharp and clean. Properly maintained cutting tools with sharp cutting edges are less likely to bind and are easier to control.
    g ) Use the power tool, accessories and tool bits, etc. in accordance with these instructions, taking into account the working conditions and the work to be performed. Use of the power tool for operations different from those intended could result in a hazardous situation.
    h ) Keep handles and grasping surfaces dry, clean and free from oil and grease. Slippery handles and grasping surfaces do not allow for safe handling and control of the tool in unexpected situations.

  5. Battery Tool Use and Care
    a ) Recharge only with the charger specified by the manufacturer. A charger that is suitable for one type of battery pack may create a risk of fire when used with another battery pack.
    b ) Use power tools only with specifically designated battery packs. Use of any other battery packs may create a risk of injury and fire.
    c ) When battery pack is not in use, keep it away from other metal objects, like paper clips, coins, keys, nails, screws or other small metal objects, that can make a connection from one terminal to another. Shorting the battery terminals together may cause burns or a fire.
    d ) Under abusive conditions, liquid may be ejected from the battery; avoid contact. If contact accidentally occurs, flush with water. If liquid contacts eyes, additionally seek medical help. Liquid ejected from the battery may cause irritation or burns.
    e ) Do not use a battery pack or tool that is damaged or modified. Damaged or modified batteries may exhibit unpredictable behaviour resulting in fire, explosion or risk of injury.
    f ) Do not expose a battery pack or tool to fire or excessive temperature. Exposure to fire or temperature above 130 °C may cause explosion.
    g ) Follow all charging instructions and do not charge the battery pack or tool outside the temperature range specified in the instructions. Charging improperly or at temperatures outside the specified range may damage the battery and increase the risk of fire.

  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.
    b ) Never service damaged battery packs. Service of battery packs should only be performed by the manufacturer or authorized service providers.

Safety Instructions for Mitre Saws

a ) Mitre saws are intended to cut wood or wood-like products, they cannot be used with abrasive cut-off wheels for cutting ferrous material such as bars, rods, studs, etc. Abrasive dust causes moving parts such as the lower guard to jam. Sparks from abrasive cutting will burn the lower guard, the kerf insert and other plastic parts.
b ) Use clamps to support the workpiece whenever possible. If supporting the workpiece by hand, you must always keep your hand at least 100 mm from either side of the saw blade. Do not use this saw to cut pieces that are too small to be securely clamped or held by hand. If your hand is placed too close to the saw blade, there is an increased risk of injury from blade contact.
c ) The workpiece must be stationary and clamped or held against both the fence and the table. Do not feed the workpiece into the blade or cut “freehand” in any way. Unrestrained or moving workpieces could be thrown at high speeds, causing injury.
d ) Push the saw through the workpiece. Do not pull the saw through the workpiece. To make a cut, raise the saw head and pull it out over the workpiece without cutting, start the motor, press the saw head down and push the saw through the workpiece. Cutting on the pull stroke is likely to cause the saw blade to climb on top of the workpiece and violently throw the blade assembly towards the operator.
e ) Never cross your hand over the intended line of cutting either in front or behind the saw blade. Supporting the workpiece “cross handed” i.e. holding the workpiece to the right of the saw blade with your left hand or vice versa is very dangerous.
f ) Do not reach behind the fence with either hand closer than 100 mm from either side of the saw blade, to remove wood scraps, or for any other reason while the blade is spinning. The proximity of the spinning saw blade to your hand may not be obvious and you may be seriously injured.
g ) Inspect your workpiece before cutting. If the workpiece is bowed or warped, clamp it with the outside bowed face toward the fence. Always make certain that there is no gap between the workpiece, fence and table along the line of the cut. Bent or warped workpieces can twist or shift and may cause binding on the spinning saw blade while cutting. There should be no nails or foreign objects in the workpiece.
h ) Do not use the saw until the table is clear of all tools, wood scraps, etc., except for the workpiece. Small debris or loose pieces of wood or other objects that contact the revolving blade can be thrown with high speed.
i ) Cut only one workpiece at a time. Stacked multiple workpieces cannot be adequately clamped or braced and may bind on the blade or shift during cutting.
j ) Ensure the mitre saw is mounted or placed on a level, firm work surface before use. A level and firm work surface reduces the risk of the mitre saw becoming unstable.
k ) Plan your work. Every time you change the bevel or mitre angle setting, make sure the adjustable fence is set correctly to support the workpiece and will not interfere with the blade or the guarding system. Without turning the tool “ON” and with no workpiece on the table, move the saw blade through a complete simulated cut to assure there will be no interference or danger of cutting the fence.
l ) Provide adequate support such as table extensions, saw horses, etc. for a workpiece that is wider or longer than the table top. Workpieces longer or wider than the mitre saw table can tip if not securely supported. If the cut- off piece or workpiece tips, it can lift the lower guard or be thrown by the spinning blade.
m ) Do not use another person as a substitute for a table extension or as additional support. Unstable support for the workpiece can cause the blade to bind or the workpiece to shift during the cutting operation pulling you and the helper into the spinning blade.
n ) The cut-off piece must not be jammed or pressed by any means against the spinning saw blade. If confined, i.e. using length stops, the cut-off piece could get wedged against the blade and thrown violently.
o ) Always use a clamp or a fixture designed to properly support round material such as rods or tubing. Rods have a tendency to roll while being cut, causing the blade to “bite” and pull the work with your hand into the blade.
p ) Let the blade reach full speed before contacting the workpiece. This will reduce the risk of the workpiece being thrown.
q ) If the workpiece or blade becomes jammed, turn the mitre saw off. Wait for all moving parts to stop and disconnect the plug from the power source and/or remove the battery pack. Then work to free the jammed material. Continued sawing with a jammed workpiece could cause loss of control or damage to the mitre saw.
r ) After finishing the cut, release the switch, hold the saw head down and wait for the blade to stop before removing the cut-off piece. Reaching with your hand near the coasting blade is dangerous.
s ) Hold the handle firmly when making an incomplete cut or when releasing the switch before the saw head is completely in the down position. The braking action of the saw may cause the saw head to be suddenly pulled downward, causing a risk of injury.

Additional Safety Rules for Mitre Saws

WARNING: Do not add batteries into the unit until complete instructions are read and understood.

  • DO NOT OPERATE THIS MACHINE until it is completely assembled and installed according to the instructions. A machine incorrectly assembled can cause serious injury.
  • OBTAIN ADVICE from your supervisor, instructor, or another qualified person if you are not thoroughly familiar with the operation of this machine. Knowledge is safety.
  • MAKE CERTAIN the blade rotates in the correct direction. The teeth on the blade should point in the direction of rotation as marked on the saw.
  • TIGHTEN ALL CLAMP HANDLES, knobs and levers prior to operation. Loose clamps can cause parts or the workpiece to be thrown at high speeds.
  • BE SURE all blade and blade clamps are clean, recessed sides of blade clamps are against blade and arbour screw is tightened securely. Loose or improper blade clamping may result in damage to the saw and possible personal injury.
  • DO NOT OPERATE ON ANYTHING OTHER THAN THE DESIGNATED VOLTAGE for the saw. Overheating, damage to the tool and personal injury may occur.
  • DO NOT WEDGE ANYTHING AGAINST THE FAN to hold the motor shaft. Damage to tool and possible personal injury may occur.
  • NEVER CUT FERROUS METALS OR MASONRY. Either of these can cause the carbide tips to fly off the blade at high speeds causing serious injury.
  • NEVER HAVE ANY PART OF YOUR BODY IN LINE WITH THE PATH OF THE SAW BLADE. Personal injury will occur.
  • NEVER APPLY BLADE LUBRICANT TO A RUNNING BLADE. Applying lubricant could cause your hand to move into the blade resulting in serious injury.
  • DO NOT place either hand in the blade area when the saw is connected to the power source. Inadvertent blade activation may result in serious injury.
  • NEVER REACH AROUND OR BEHIND THE SAW BLADE. A blade can cause serious injury.
  • DO NOT REACH UNDERNEATH THE SAW unless it is has been turned off and the battery packs have been remvoved. Contact with saw blade may cause personal injury.
  • SECURE THE MACHINE TO A STABLE SUPPORTING SURFACE. Vibration can possibly cause the machine to slide, walk, or tip over, causing serious injury.
  • USE ONLY CROSSCUT SAW BLADES recommended for mitre saws. For best results, do not use carbide tipped blades with hook angles in excess of 7 degrees. Do not use blades with deep gullets. These can deflect and contact the guard, and can cause damage to the machine and/or serious injury.
  • USE ONLY BLADES OF THE CORRECT SIZE AND TYPE specified for this tool to prevent damage to the machine and/or serious injury (complying with EN847-1).
  • INSPECT BLADE FOR CRACKS or other damage prior to operation. A cracked or damaged blade can come apart and pieces can be thrown at high speeds, causing serious injury. Replace cracked or damaged blades immediately. Observe the maximum speed marked on the saw blade.
  • CLEAN THE BLADE AND BLADE CLAMPS prior to operation. Cleaning the blade and blade clamps allows you to check for any damage to the blade or blade clamps. A cracked or damaged blade or blade clamp can come apart and pieces can be thrown at high speeds, causing serious injury.
  • THE MAXIMUM SPEED OF THE SAW BLADE shall always be greater than or at least equal to the speed marked on the rating plate of the tool.
  • THE SAW BLADE DIAMETER must be in accordance with the markings on rating plate of the tool.
  • DO NOT USE WARPED BLADES. Check to see if the blade runs true and is free from vibration. A vibrating blade can cause damage to the machine and/or serious injury.
  • DO NOT use lubricants or cleaners (particularly spray or aerosol) in the vicinity of the plastic guard. The polycarbonate material used in the guard is subject to attack by certain chemicals.
  • KEEP GUARD IN PLACE and in working order.
  • ALWAYS USE THE KERF PLATE AND REPLACE THIS PLATE WHEN DAMAGED. Small chip accumulation under the saw may interfere with the saw blade or may cause instability of workpiece when cutting.
  • USE ONLY BLADE CLAMPS SPECIFIED FOR THIS TOOL to prevent damage to the machine and/or serious injury.
  • MAKE SURE to use the correct saw blade for the material to be cut.
  • CLEAN THE MOTOR AIR SLOTS of chips and sawdust. Clogged motor air slots can cause the machine to overheat, damaging the machine and possibly causing a short which could cause serious injury.
  • NEVER LOCK THE SWITCH IN THE “ON” POSITION. Severe personal injury may result.
  • NEVER STAND ON TOOL. Serious injury could occur if the tool is tipped or if the cutting tool is unintentionally contacted.

WARNING: Cutting plastics, sap coated wood, and other materials may cause melted material to accumulate on the blade tips and the body of the saw blade, increasing the risk of blade overheating and binding while cutting.
WARNING: Always wear proper personal hearing protection. Under some conditions and duration of use, noise from this product may contribute to hearing loss. Be aware of the following factors influencing exposure to noise:

  • Use saw blades designed to reduce the emitted noise,
  • Use only well sharpened saw blades, and
  • Use specifically designed noise-reduction saw blades.

WARNING: ALWAYS use safety glasses. Everyday eyeglasses are NOT safety glasses. Also use face or dust mask if cutting operation is dusty.
WARNING: Use of this tool can generate and/or disperse dust, which may cause serious and permanent respiratory or other injury. Always use approved respiratory protection appropriate for the dust exposure.
WARNING: Some dust created by power sanding, sawing, grinding, drilling, and other construction activities contains chemicals known 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 chromium 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.

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 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 increase the risk of breathing problems:

  • No dust extractor connected when sawing wood.

  • Insufficient dust extraction caused by uncleaned exhaust filters.

SAVE THESE INSTRUCTIONS
Chargers
DeWALT chargers require no adjustment and are designed to be as easy as possible to operate.
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.
If the supply cord is damaged, it must be replaced only by DeWALT or an uthorised 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.

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.
  • 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  25  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  26  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.
    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 catalogue 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 fall below 4 ˚C (34 ˚F) (such as outside sheds or metal buildings in winter), or 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. 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.
NOTE: Lithium-ion batteries should not be put in checked baggage. 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 FLEXVOLtm Battery
The DeWALT FLEXVOLT TM battery has two modes: Use and Transport. Use Mode: When the FLEXVOLT TM battery stands alone or is in a DeWALT 18V product, it will operate as an 18V battery. When the FLEXVOLT TM  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 FLEXVOLT TM 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. For example, the Transport Wh rating Example of Use and Transport Label Marking might indicate 3 x 36 Wh, meaning 3 batteries of 36 Wh each. The Use Wh rating might indicate 108 Wh (1 battery implied).DEWALT DCS777 Cordless FLEXVOLT Mitre Saw -
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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 (without transport cap). Example: Wh rating indicates 108 Wh (1 battery with 108 Wh).
| TRANSPORT (with built-in transport cap). Example: Wh rating indicates 3 x 36 Wh (3 batteries of 36 Wh).

Battery Type
The DCS777 operates on a 54 volt battery pack.
These battery packs may be used: DCB546, DCB547, DCB548. Refer to Technical Data for more information.

Package Contents

The package contains:
1 Partly assembled machine
2 Hex keys (4 mm and 6 mm)
1 216 mm TCT saw blade
1 Material clamp
2 Battery packs (T2 model)
1 Charger (T2 model)
2 Base extention handles and installation hardware
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.
| Keep hands away from blade.
| Keep hands 100 mm from either side of saw blade.
| Do not stare directly into the light source.
| Carrying point.

Date Code Position (Fig. B)
The Date Code  32 , which also includes the year of manufacture, is printed into the housing.
2019 XX XX Year of Manufacture
Description (Fig. A–D)
WARNING: Never modify the power tool or any part of it. Damage or personal injury could result.

1 On/off switch 17 Rail lock knob
2 Guard lock up release le 18 Bevel clamp handle
3 Fixed upper guard 19 Bevel scale
4 Outer flange 20 Bench mounting holes
5 Blade bolt 21 Lock down pin
6 Lower blade guard 22 Rails
7 Saw blade 23 Saw head
8 Sliding fence lock knob 24 Hex wrenches (Fig. D)
9 Fixed table 25 Battery pack
10 Kerf plate 26 Battery pack release button
11 Mitre arm 27 Fuel gauge button
12 Mitre latch 28 Lock off switch
13 Rotating table/mitre ar 29 Bevel override button
14 Mitre scale 30 Dust extraction port
15 Sliding fence 31 Base extention handles
16 Material clamp 32 Date code

Intended Use

Your DeWALT cordless compact mitre saw has been designed for professional cutting wood, wood products and plastics. When using the appropriate saw blades, sawing aluminum is also possible. 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.
Assembling the Base Extension Handles (Fig. V)
WARNING: Base extension handles must be assembled to both sides of the saw’s base before using the saw.

  1. Locate the holes above the hand indentations on the side of the base.
  2. Assemble the base extension handles  31  using the 2 screws  46  and 2 nuts  47  provided, as shown in Figure V.
  3. Tighten securely with the hex wrench included with your saw.
  4. Ensure the extension is secure by pulling on it to verify no movement.
  5. Repeat steps 1 through 4 on the other side.

Inserting and Removing the Battery Pack from the Tool (Fig. A–C)
NOTE: Make sure your battery pack  25  is fully charged.
To Install the Battery Pack into the Tool

  1.  Align the battery pack  25  with the rails inside the tool’s handle (Fig. A2. 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  26  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  27 . 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.
Bench Mounting (Fig. B)

  1. Holes  20  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.

Transporting the Saw (Fig. A, B)
WARNING: To reduce the risk of serious personal injury, ALWAYS lock the rail lock knob, mitre latch, bevel clamp handle, lock down pin and fence lock knobs before transporting saw. Never use guards for transporting or lift up.
In order to conveniently carry the mitre saw, base extension handles  31  have been included on the base of the saw.

  • Before transporting the saw, remove the battery.
  • To transport the saw, lower the head and depress the lock down pin  21 .
  • Lock the rail lock knob with the saw head in the front position, lock the mitre arm in the full left mitre angle, slide the fence  15  completely inward and lock the fence lock knobs  8 , then lock the bevel clamp handle  18  with the saw head in the vertical position to make the tool as compact as possible.
  • Always use the base extension handles  31  to carry the saw.

Changing or Installing a New Saw Blade (Fig. A, D, E)
WARNING: To reduce the risk of injury, wear gloves when handling the saw blade.
WARNING: To reduce the risk of injury, turn unit off and disconnect machine from power source before installing and removing accessories, before adjusting or  hanging set-ups or when making repairs. Be sure the trigger switch is in the OFF position. An accidental start-up can cause injury.

  • Never lock the spindle while the blade is under power or coasting.
  • Do not cut light alloy and ferrous metal (containing iron or steel) or masonry or fibre cement product with this mitre saw.

Removing the Blade

  1. Remove the battery from the saw.
  2. Insert the 6 mm hex key  24  into the opposite location of the blade shaft and hold it (Fig. D).
  3. Use second hex key as shown in Figure D as spindle lock.
  4. Loosen the blade bolt  5  by turning clockwise. Remove the blade bolt and the outer flange  4 .
  5. Press the lower guard lock up release lever  2  to raise the lower blade guard  6  and remove the saw blade  7 .

Installing a Blade

  1. Remove the battery from the saw.
  2. 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). Replace the outer flange  4 , making sure that the location lugs  34  are engaged correctly, one on each side of the motor shaft.
  3. Tighten the blade bolt  5  by turning counterclockwise while holding the 6 mm hex key  24  engaged with your other hand (Fig. D).

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.

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 Rails for Constant Cutting Depth (Fig. A, B, F, G)
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 rails 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  13  to the bottom of the outer flange  4  (Fig. F).
  3. Turn the saw head rail lock knob  17  (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. G):
    a. Loosen the locknut  37  in the bracket  35  and adjust the screw  36  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. H)
Turn the sliding fence lock knob  8  counterclockwise to loosen. Move the sliding fence  15  to a position that avoids the blade cuts it, then tighten the fence lock knob by turning clockwise.
WARNING: The guide grooves can become clogged with sawdust. Use a stick or some low pressure air to clear the guide grooves.
Checking and Adjusting the Blade to the Fence (Fig. A, B, I, J)

  1. Slacken the mitre latch  12 .

  2. Place your thumb on the mitre arm  11  and squeeze the mitre latch  12  to release the rotating table/mitre arm  13 .

  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 pin  21  (Fig. B).

  5. Check that the two 0° markings  38  on the mitre scale  14  are just visible.

  6. Place a square  40  (Fig. J) against the left side of the fence  15  and blade  7 .
    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  39  (Fig. I) 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  39 .

Checking and Adjusting the Blade to the Table (Fig. K–M)

  1. Loosen the bevel clamp handle  18  (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  40  on the table and up against the blade  7  (Fig. K).
    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  18  and turn the vertical position adjustment stop screw  41  in or out until the blade is at 90° to the table as measured with the square.
    b. If the bevel pointer  42  does not indicate zero on the bevel scale  19 , loosen the screws  43  that secure the scale and move the scale as necessary.

Checking and Adjusting the Bevel Angle (Fig. A, L, M)
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  29  (Fig. L) is located in the left position.
  2. Loosen the bevel clamp handle  18  and move the saw head to the left.
  3. This is the 45° bevel position.
  4. If adjustment is required, turn the stopscrew  44  in or out as necessary until the pointer  42  indicates 45°.

Prior to Operation

  • Install the base extensions to both sides of the saw’s base. Refer to Assembling the Base Extensions section.
  • Check the protective belt cover for damage and the proper functioning of the lower guard.
  • Make sure to use the kerf plate. Do not operate the machine if the kerf slot is wider than 12 mm.
  • Install the appropriate saw blade. Do not use excessively worn blades. The maximum rotation speed of the tool must not exceed that of the saw blade.
  • Make sure all locking knobs and clamp handles are tight.
  • Use personal protective equipment and connect the saw to an external dust extractor.
  • Although this saw will cut wood and many nonferrous materials, these operating instructions refer to the cutting of wood only. The same guidelines apply to the other materials. Do not cut ferrous (iron and steel) materials, fibre cement or masonry with this saw!
  • Do not attempt to cut excessively small pieces.
  • Secure the workpiece.
  • Allow the blade to cut freely. Do not force.
  • Allow the motor to reach full speed before cutting.

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.
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  28  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  28  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, B, N)
NOTE: The mitre saw must have the battery installed for the XPS LED worklight to operate.
The XPS LED Worklight System is activated by engaging the trigger or pressing the XPS button 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 to bring the saw blade  7  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 (Fig. O)
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 100 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, N)
NOTE: Use 216 mm saw blades with 30 mm arbor holes to obtain the desired cutting capacities.

  1. Slacken the mitre latch  12  and subsequently lift it up.
  2. Engage the mitre latch  12  at the 0° position and fasten the mitre latch.
  3. Place the wood to be cut against the fence  15 .
  4. Take hold of the operating handle and press the guard lock up release lever  2  to release the guard. Extend the head of the saw all the way out.
  5. Flip the lock off switch  28  and press the on/off trigger switch  1  to start the motor.
  6. Depress the head to allow the blade to cut through the timber and enter the plastic kerf plate  10 .
  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.

Performing a Sliding Cut (Fig. A, B, O)

  1. Turn the rail lock knob  17  to loosen.
  2. Push down the saw head  23 , pull out the lock down pin  21  and let the saw head rise to it’s highest position.
  3. Place the wood to be cut against the sliding fence  15  and secure it with the material clamp  16 .
  4. Lower the saw head then pull it to the end of its travel.
  5. Press the guard lock-up release lever  2  to release the guard. Flip the lock off switch  28  and press the on/off trigger switch  1  to start the motor.
  6. Totally depress the head to allow the blade to cut through the timber and push the head back to complete the cut.
  7. 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: Remember to lock the saw head in the rear position when the sliding cuts are finished.
Vertical Mitre Cross-Cut (Fig. A, P)

  1. Squeeze the mitre latch  12 . 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 latch 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

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  18  by pulling it outward then down and set the bevel as desired.
  2. Set the override lever  29  if required.
  3. Hold the head firmly and do not allow it to fall.
  4. Tighten the bevel clamp handle  18  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 tapewhen finished.
Clamping the Workpiece (Fig. R)
WARNING: A workpiece that is clamped, balanced and secure before a cut may become unbalanced after a cut is completed. An unbalanced load may tip the saw or anything the saw is attached to, such as a table or workbench. When making a cut that may become unbalanced, properly support the workpiece and ensure the saw is firmly bolted to a stable surface. Personal injury may occur.
WARNING: The clamp foot must remain clamped above the base of the saw whenever the clamp is used. Always clamp the workpiece to the base of the saw – not to any other part of the work area. Ensure the clamp foot is not clamped on the edge of the base of the saw.
CAUTION: Always use a work clamp to maintain control and reduce the risk of personal injury and workpiece damage. For best results use the material clamp  16  made for use with your saw.
To Install Clamp

  1. Insert it into the hole behind the fence. The clamp  16  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 CHECKTHE PATH OF THE BLADE. ENSURE THE CLAMP DOES NOT INTERFERE
WITH THE ACTION OF THE SAW OR GUARDS.

Compound Mitre (Fig. S, T)

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 Figures S and T.
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 bevelor 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. T) 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. DEWALT DCS777 Cordless FLEXVOLT Mitre Saw - grap
  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. T), 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, U)
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.
WARNING: Certain dust, such as oak or beech dust, is considered carcinogenic, especially in connection with wood-treatment additives.

  • Always use dust extraction.
  • Provide for good ventilation of the work space.
  • It is recommended to wear an appropriate respirator.

CAUTION: Never operate this saw unless the dust bag or  DEWALT dust extractor is in place. Wood dust may create a breathing hazard.
CAUTION: Check and clean the dust bag each time after using.
WARNING: When sawing aluminium, remove the dust bag, or disconnect the dust extractor to avoid the risk of fire. Your mitre saw has a built-in dust port  30  that allows connection to either a dust bag (33 mm nozzles) or direct attachment to the DeWALT AirLock (DWV9000-XJ)  45 .
Observe the relevant regulations in your country for the materials to be worked.
To Attach the Dust Bag

  1. Fit a dust bag to the dust port  30 .

To Empty the Dust Bag

  1. Remove dust bag from the saw and gently shake or tap the dust bag to empty.
  2. Reattach the dust bag back onto the dust port.

You may notice that all the dust will not come free from the bag. This will not affect cutting performance but will reduce the saw’s dust collection efficiency. To restore your saw’s dust collection efficiency, depress the spring inside the dust bag when you are emptying it and tap it on the side of the trash can or dust receptacle.
External Dust Extraction
When vacuuming dry dust that is especially detrimental to health or carcinogenic, use a special dust Class M vacuum cleaner.
connecting to an airLock compatable Dust Extractor (Fig. U)
The dust port  30  on your mitre saw is compatable with the DeWALT AirLock connection system. The AirLock allows for a fast, secure connection between the dust extractor hose and the mitre saw.

  1. Ensure the collar on the AirLock connector  45  is in the unlock position. Align notches on collar and AirLock connector as shown for unlock and lock positions.
  2. Push the AirLock connector onto the dust port  30 .
  3. Rotate the collar to the locked position.

NOTE: The ball bearings inside collar lock into slot and secure the connection.The mitre saw is now securely connected to the dust extractor.

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 accessoriesAn 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 Changing or Installing a New 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 crosscutting 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.

DEWALT, 210 Bath Road;
Slough, Berks SL1 3YD
Tel: 01753-567055
Fax: 01753-572112
www.dewalt.co.uk
[email protected]

References

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