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USER MANUAL DCBL777 DEWALT
English (original instructions) 4
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Technical diagram of a connector with numbered parts, likely illustrating a mechanical or electrical assembly.Fig. F Fig. G

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13 14 17 4
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15 16 DEWALT
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Fig. H Fig. I 1 2 5
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3 2 1 50V DEWALTFig. J Fig. K

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6 7 8
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Technical diagram of a mechanical device with numbered components labeled 18, 19, and 20WARNING: Read all safety warnings
and all instructions. Failure to follow the warnings and instructions may result in electric shock, fire and/or serious injury.

WARNING: To reduce the risk of injury, read the instruction manual.
Intended Use
This cordless handheld blower is designed for professional blowing applications.
DO NOT use under wet conditions or in presence of flammable liquids, gases or combustible finely divided dusts.
DO NOT let children come into contact with the tool. Supervision is required when inexperienced operators use this tool.
Static shocks are possible in dry areas or when relative humidity of air is low. This is only temporary and does not affect performance of the product. To reduce the frequency of static shocks, avoid using when humidity is low.
Definitions: Safety Alert Symbols and Words
This instruction manual uses the following safety alert symbols and words to alert you to hazardous situations and your risk of personal injury or property damage.
DANGER:
RANGER. Indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury.
WARNING:
WARNING. Indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury.
CAUTION:
MOTION. Indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate injury.
NOTICE:
NOTICE. Indicates a practice not related to personal injury which, if not avoided, may result in property damage.
(Used without word) Indicates a safety related message.
IMPORTANT SAFETY INSTRUCTIONS
READ ALL INSTRUCTIONS BEFORE USING THIS APPLIANCE
When using this appliance, basic safety precautions should always be followed including the following:
WARNING:
electric shock, or injury:
- Do not leave the appliance when connected to power source. Remove the battery pack when not in use and before servicing.
- Do not use on wet surfaces. Do not expose to rain. Store indoors.
- Do not allow appliance to be used as a toy. Close attention is necessary when used near children. Use only for intended purposes.
- Use this appliance ONLY as described in the manual. Use only recommended attachments.
- Do not use this appliance if it is showing signs of malfunction in any way. If the appliance is not working correctly, has been dropped, damaged, left outdoors, or dropped into water, return it to a service center.
- Do not handle the appliance with wet hands.
- Do not put any objects into the openings of the appliance. Do not use the appliance with any opening blocked; keep free of dust, lint, hair and anything else that may reduce air flow.
- Keep hair, loose clothing, fingers, and all body parts away from the openings and moving parts.
- Turn off all controls before disconnecting from power source.
- Use extra care when cleaning on stairs.
SAVE THESE INSTRUCTIONS
Additional Safety Instructions
WARNING:
WARNING: When using an electric appliance, basic safety precautions should always be followed to reduce risk of fire, electric shock, and personal injury, including the following.
WARNING:
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.
WARNING:
WARNING: Never allow children, persons with reduced physical, sensory or mental capabilities or lack of experience and knowledge or people unfamiliar with these instructions to use the machine, local regulations may restrict the age of the operator.
To Reduce Risk of Injury:
- Avoid accidental starting. Turn off all controls before removing the battery pack. Be sure switch is in the locked or off position before inserting battery pack. Carrying units with your finger on the switch or inserting the battery pack into a unit with the switch on invites accidents.
- Avoid dangerous environmental conditions – Do not use electric units in damp or wet locations. Don't use the unit in the rain.
-
USE SAFETY EQUIPMENT. Always wear eye protection and hearing protection. Wear a filter mask if operation is dusty. Non-skid safety shoes must be used for appropriate conditions.
-
Use the right unit – Do not use this unit for any job except that for which it is intended.
- Inspect the area before using the unit. Remove all debris and hard objects such as rocks, glass, wire, etc. that can ricochet, be thrown, or otherwise cause injury or damage during operation.
- Use only as described in this manual.
- Keep children, bystanders and animals away from the work area a minimum of 30 feet (10 meters) when starting or operating the unit.
- Maintain unit with care. Keep unit clean for best and safest performance. Follow instructions for proper maintenance.
- Stay alert - Watch what you are doing. Use common sense. Do not operate unit when you are tired.
- Do not place outlet of blower near eyes or ears when operating.
- Do not operate the machine while people, especially children, or pets are nearby.
- Do not touch moving hazardous parts before the machine is disconnected from the battery and the moving hazardous parts have come to a complete stop.
- If the machine starts to vibrate abnormally, remove the battery pack and immediately check.
- Do not attempt to clear clogs from unit without first removing the battery.
- Do not immerse any part of the unit in liquid.
- Do not use unit if switch does not turn it on or off. A unit that cannot be controlled with the switch is dangerous and must be repaired.
- Do not allow debris to be ingested into blower intake.
- Do not point unit discharge at self or bystanders.
- Do not use to blow explosive dust, or in areas where air contains explosive dust such as coal, grain, or other combustible material.
- Do not attempt to repair the blower. To assure product safety and reliability, repairs, maintenance, and adjustments should be performed by authorized service centers.
- Do not operate blower in a gaseous or explosive atmosphere. Motors in these units normally spark, and the sparks might ignite fumes.
- Do not overreach. Keep proper footing and balance at all times.
- Never leave blower running unattended. Turn power off.
- Remove the battery pack before connecting the tube.
- Store idle units. When not in use, the unit should be stored in a dry, high or locked-up place - out of reach of children.
-
Instructions for compatible batteries and chargers are included for reference in this manual. Read all instruction manuals included with your battery pack or charger. Read all cautionary markings on the charger and battery pack.
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Disconnect the battery pack from the blower before making any adjustments, changing accessories, servicing, moving or storing the unit. Such preventative safety measures reduce the risk of starting the appliance accidentally.
- Do not use if appliance is not working as it should, has been dropped, damaged, left outdoors, or dropped into water, return it to a service center.
SAVE THESE INSTRUCTIONS
Additional Safety Information

Never modify the power tool or

ALWAYS use safety glasses.
Everyday eyeglasses are NOT safety glasses. Also use face or dust mask if operation is dusty. ALWAYS WEAR CERTIFIED SAFETY EQUIPMENT:
• ANSI Z87.1 eye protection (CAN/CSA Z94.3),
• ANSI S12.6 (S3.19) hearing protection,
• NIOSH/OSHA/MSHA respiratory protection.

Some dust contains chemicals
known to State of California to cause cancer, birth defects or other reproductive harm. Some examples of these chemicals are:
• compounds in fertilizers,
• compounds in insecticides, herbicides and pesticides,
• arsenic and chromium from chemically treated lumber.
To reduce your exposure to these chemicals, wear approved safety equipment such as dust masks that are specially designed to filter out microscopic particles.
- 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 lie on the skin may promote absorption of harmful chemicals.

Use of this tool can
generate and/or disperse dust, which may cause serious and permanent respiratory or other
injury. Always use NIOSH/OSHA approved respiratory protection.

Always wear proper
personal hearing protection that conforms to ANSI S12.6 (S3.19) during use. Under some conditions and duration of use, noise from this product may contribute to hearing loss.

When not in use, place
tool on its side on a stable surface where it will not
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cause a tripping or falling hazard. Some tools with a large battery pack will stand upright but may be easily knocked over.
• Air vents often cover moving parts and should be avoided. Loose clothes, jewelry or long hair can be caught in moving parts.
The label on your tool may include the following symbols. The symbols and their definitions are as follows:
V....volts
Hz......hertz
min......minutes
--- or DC.....direct current
Class I Construction (grounded)
.../min.....per minute
BPM.....beats per minute
or AC/DC....alternating or direct current
☐ Class II Construction (double insulated)
n_0 ......no load speed
n ......rated speed
PSI.....pounds per square inch
⊕ ......earthing terminal
⚠️ ......safety alert symbol
▲......visible radiation—do not stare into the light
E....wearrespiratory protection
⑦ wear eye protection
○ ....wearhearing protection
read all documentation
do not expose to rain
BATTERIES AND CHARGERS
The battery pack is not fully charged out of the carton. Before using the battery pack and charger, read the safety instructions below and then follow charging procedures outlined. When ordering replacement battery packs, be sure to include the catalog number and voltage.
READ ALL INSTRUCTIONS
Important Safety Instructions for All Battery Packs
WARNING:
Read all safety warnings,
instructions, and cautionary markings for the battery pack, charger and product. Failure to follow the warnings and instructions may result in electric shock, fire and/or serious injury.
- Do not charge or use the battery pack in explosive atmospheres, such as in the presence of flammable liquids, gases or dust. Inserting or removing the battery pack from the charger may ignite the dust or fumes.
- NEVER force the battery pack into the charger. DO NOT modify the battery pack in any way to fit into a non-compatible charger as battery pack may rupture causing serious personal injury. Consult the chart at the end of this manual for compatibility of batteries and chargers.
-
Charge the battery packs only in DEWALT chargers.
• DO NOT splash or immerse in water or other liquids.
• DO NOT allow water or any liquid to enter battery pack. -
Do not store or use the tool and battery pack in locations where the temperature may reach or exceed 104 °F (40 °C) (such as outside sheds or metal buildings in summer). For best life store battery packs in a cool, dry location.
NOTE: Do not store the battery packs in a tool with the trigger switch locked on. Never tape the trigger switch in the ON position. - 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.
- Do not expose a battery pack or appliance to fire or excessive temperature. Exposure to fire or temperature above 265 °F (130 °C) may cause explosion.
- Follow all charging instructions and do not charge the battery pack or appliance outside of the temperature range specified in the instructions. Charging improperly or at temperatures outside of the specified range may damage the battery and increase the risk of fire.
- If battery contents come into contact with the skin, immediately wash area with mild soap and water. If battery liquid gets into the eye, rinse water over the open eye for 15 minutes or until irritation ceases. If medical attention is needed, the battery electrolyte is composed of a mixture of liquid organic carbonates and lithium salts.
- Contents of opened battery cells may cause respiratory irritation. Provide fresh air. If symptoms persist, seek medical attention.
- Battery liquid may be flammable if exposed to spark or flame.
- Never attempt to open the battery pack for any reason. If the battery pack case is cracked or damaged, do not insert into the charger. Do not crush, drop or damage the battery pack. Do not use a battery pack or charger that has received a sharp blow, been dropped, run over or damaged in any way (e.g., pierced with a nail, hit with a hammer, stepped on). Damaged battery packs should be returned to the service center for recycling.
Storage Recommendations
The best storage place is one that is cool and dry, away from direct sunlight and excess heat or cold. Store the fully charged battery pack out of the charger.
Battery Pack Cleaning Instructions
Dirt and grease may be removed from the exterior of the battery pack using a cloth or soft non-metallic brush. Do not use water or any cleaning solutions.
Fuel Gauge Battery Packs (Fig. B)
Some battery packs include a fuel gauge. When the fuel gauge button is pressed and held, the LED lights will indicate the approximate level of charge remaining. This does not indicate tool functionality and is subject to variation based on product components, temperature, and end-user application.
Transportation

WARNING: Fire hazard. Do not store, carry, or transport 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, coins, hand tools, etc. When transporting individual battery packs, make sure that the battery terminals are protected and well insulated from materials that could contact them and cause a short circuit. NOTE: Li-ion battery packs should not be put in checked baggage on airplanes and must be properly protected from short circuits if they are in carry-on baggage.
Shipping the DEWALT FLEXVOLT® Battery Pack
The DEWALT FLEXVOLT® battery pack has a battery cap that should be used when shipping the battery pack.

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Technical line drawing of a mechanical component with no visible text or symbolsAttach the cap to the battery pack to ready it for shipping. This converts the battery pack to three separate 20V batteries. The three batteries have the Watt hour rating labeled "Shipping" on the battery pack. If shipping without the cap or in a tool, the pack is one battery at the Watt hour rating labeled "Use."
Example battery pack label:
USE: 120 Wh SHIPPING: 3 x 40 Wh
In this example, the battery pack is three batteries with 40 Watt hours each when using the cap. Otherwise, the battery pack is one battery with 120 Watt hours.
The RBRC® Seal
Please take your spent battery packs to an authorized DEWALT service center or to your local retailer for recycling. In some areas, it is illegal to place spent battery packs in the trash. You may also contact your local recycling center for information on where to drop off the spent battery pack. Do not place in curbside recycling. For more information visit www.call2recycle.org or call the toll-free number in the RBRC® Seal.
RBRC ^® is a registered trademark of Call 2 Recycle, Inc.

Important Safety Instructions for All Battery Chargers

WARNING: Read all safety warnings, instructions, and cautionary markings for the battery pack, charger and product. Failure to follow the warnings and instructions may result in electric shock, fire and/or serious injury.
- DO NOT attempt to charge the battery pack with any chargers other than a DEWALT charger. DEWALT chargers and battery packs are specifically designed to work together.
• These chargers are not intended for any uses other than charging DEWALT rechargeable battery packs. Charging other types of battery packs may cause them to overheat and burst, resulting in personal injury, property damage, fire, electric shock or electrocution. - Do not expose the charger to rain or snow.
- Do not allow water or any liquid to enter charger.
- Pull by the plug rather than the cord when disconnecting the charger. This will reduce the risk of damage to the electric plug and cord.
- Make sure that the cord is located so that it will not be stepped on, tripped over or otherwise subjected to damage or stress.
- Do not use an extension cord unless it is absolutely necessary. Use of improper extension cord could result in risk of fire, electric shock or electrocution.
- When operating a charger outdoors, always provide a dry location and use an extension cord suitable for outdoor use. Use of a cord suitable for outdoor use reduces the risk of electric shock.
- An extension cord must have adequate wire size (AWG or American Wire Gauge) for safety. The smaller the gauge number of the wire, the heavier the cord and thus the greater its capacity. An undersized cord will cause a drop in line voltage resulting in loss of power and overheating. The following table shows the correct size to use depending on total length of all extension cords plugged together, and nameplate ampere rating. If in doubt, use the next heavier gauge.
Minimum Gauge for Cord Sets
| Volts | Total Length of Cord in Feet (meters) | ||||
| 120V 25 (7.6) 50 (15.2) 100 (30.5) 150 (45.7) | |||||
| Ampere Rating | American Wire Gauge | ||||
| More Than Not More Than | |||||
| 0 6 18 16 16 14 | |||||
| 6 10 18 16 14 12 | |||||
| 10 12 16 16 14 12 | |||||
| 12 16 14 12 | Not Recommended | ||||
- Do not place any object on top of the charger or place the charger on a soft surface that might block the ventilation slots and result in excessive internal heat. Place the charger in a position away from any heat source. The charger is ventilated through slots in the top and the bottom of the housing.
- Do not operate the charger with a damaged cord or plug. Have them replaced immediately.
- Do not operate the charger if it has received a sharp blow, been dropped or otherwise damaged in any way. Take it to an authorized service center.
- Do not disassemble the charger; take it to an authorized service center when service or repair is required. Incorrect reassembly may result in a risk of electric shock, electrocution or fire.
ENGLISH
- The charger is designed to operate on standard 120V household electrical power. Do not attempt to use it on any other voltage. This does not apply to the vehicular charger.
- Foreign materials of a conductive nature, such as, but not limited to, grinding dust, metal chips, steel wool, aluminum foil or any buildup of metallic particles should be kept away from the charger cavities and ventilation slots.
• Always unplug the charger from the power supply when there is no battery pack in the cavity.
Charging a Battery (Fig. C)
- Plug the charger into an appropriate outlet.
- Insert and fully seat battery pack 15. The red charging light(s) will continuously blink while charging.
- Charging is complete when the red charging light(s) remain(s) continuously ON. Battery pack can be left in charger or removed. Some chargers require the battery pack release button 16 to be pressed for removal.
WARNING:
Only charge batteries in air
temperature over 40^ F ( 4.5^ C) and below 104^ F ( 40^ C).
- Charger will not charge a faulty battery pack, which may be indicated by the charging light(s) staying OFF. Take charger and battery pack to an authorized service center if light(s) stay(s) OFF.
NOTE: Refer to label near charging light(s) on charger for blink patterns. Older chargers may have additional information and/or may not have a yellow indicator light.
NOTE: To remove the battery pack, some chargers require the battery pack release button 16 to be pressed.
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 may charge at a slower rate than a warm battery pack.
The hot/cold pack delay will be indicated by the red light(s) continuing to blink and with the yellow light continuously ON. Once the battery pack has reached an appropriate temperature, the yellow light will turn OFF and the charger will resume the charging procedure.
Fan-Cooled Chargers
Some chargers are 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
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 and the battery pack will need to be recharged.
Important Charging Notes
- Longest life and best performance can be obtained if the battery pack is charged when the air temperature is between 65 °F - 75 °F ( 18 °C - 24 °C ). DO NOT charge when the battery pack is below 40 °F ( 4.5 °C ), or above 104 °F ( 40 °C ). This is important and will prevent serious damage to the battery pack.
- The charger and battery pack may become warm to the touch while charging. This is a normal condition, and does not indicate a problem. To facilitate the cooling of the battery pack after use, avoid placing the charger or battery pack in a warm environment such as in a metal shed or an uninsulated trailer.
- If the battery pack does not charge properly:
a. Check operation of receptacle by plugging in a lamp or other appliance;
b. Check to see if receptacle is connected to a light switch which turns power off when you turn out the lights;
c. If charging problems persist, take the tool, battery pack and charger to your local service center.
- You may charge a partially used pack whenever you desire with no adverse effect on the battery pack.
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.
Wall Mounting
Some DEWALT 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 1" (25.4 mm) long, with a screw head diameter of 0.28–0.35" (7–9 mm), screwed into wood to an optimal depth leaving approximately 7/32" (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.
SAVE THESE INSTRUCTIONS FOR FUTURE USE
ASSEMBLY AND ADJUSTMENTS
WARNING: To reduce the risk of serious personal injury, turn unit off and remove the battery pack before making any adjustments or removing/installing attachments or accessories. An accidental start-up can cause injury.
Blower Tube Assembly (Fig. D)
WARNING: Do not operate blower without tube securely held in place. Never reach down into housing through tube hole.
WARNING: Always remove the battery when you leave the blower unattended or when storing, checking, adjusting, cleaning, or working on the blower.
- To attach the blower tube 5 to the power head 4, line up the peg 25 on the bottom of the power head 4 with the notch 24 on the bottom of the blower tube opening as shown in Fig. D.
- Push the blower tube 5 onto the power head 4 until the two blower tube locks 26 engage the blower tube 5 and an audible click is heard.
- Pull on the blower tube 5 to ensure it is securely held in place.
Concentrator and Broom Tip Assembly (Fig. E)
WARNING: Always remove the battery before you leave the blower unattended or when storing, checking, adjusting, cleaning, removing/installing attachments or accessories or working on the blower.
-
Use the concentrator tip 11 to target air flow to a tighter area.
• Use the broom tip 10 to target air flow to a wider area. -
Align the concentrator tip 11 or broom tip 10 with the blower tube 5 as shown in Fig. E.
-
Slide the concentrator 11 onto the blower tube 5.
-
Slide the locking tab 12 over and down until the tip lock 9 on the blower tube 5 engages the locking tab 12 on the bottom of the concentrator tip 11 or broom tip 10.
-
Pull on the concentrator tip 11 or broom tip 10 to ensure it is securely held in place.
-
To remove the concentrator tip 11 or broom tip 10, lift the locking tab 12 off of the tip lock 9 and pull the concentrator tip 11 or broom tip 10 away from the blower tube 5.
Attaching and Adjusting the Shoulder Strap (Fig. F)
WARNING: The shoulder strap should only be slung over one shoulder and not across the body.
Attach the shoulder strap 14 to the tool as shown in Fig. F and adjust for proper balance and support.
- Snap the shoulder strap latch 17 onto the strap mount 13 located on the power head 4, as shown in Fig. F.
- Adjust the shoulder strap 14 so it fits over your shoulder and provides proper balance and support.
- To remove the shoulder strap 14 pinch the shoulder strap latch 17 and pull it from the strap mount 13.
OPERATION
WARNING: To reduce the risk of serious personal injury, turn unit off and remove the battery pack before making any adjustments or removing/installing attachments or accessories.
An accidental start-up can cause injury.
WARNING: Do not operate blower without blow tube securely in place. Never reach down into housing through tube hole.
WARNING: Always wear safety glasses.
Always wear respiratory protection. Always wear hearing protection. Use of rubber gloves and substantial footwear is recommended when working outdoors. Keep long hair and loose clothing away from openings and moving parts. For household use only.
WARNING: Cut Hazard. When turning the tool off, wait 10 seconds for the fan to stop rotating before removing the blower tube.
• Always ensure the blower is switched OFF and the battery is removed when:
- You leave blower unattended.
- Clearing a blockage.
- Checking, adjusting, cleaning or working on blower.
- Only use blower in daylight or good artificial light.
Installing and Removing the Battery Pack (Fig. G)
WARNING: Ensure the tool/appliance is in the off position before inserting the battery pack.
NOTE: For best results, make sure your battery pack is fully charged.
- To install the battery pack 15 into the tool handle, align the battery pack with the rails inside the tool's handle and slide it into the handle until the battery pack is firmly seated in the tool and ensure that it does not disengage.
- To remove the battery pack from the tool, press the battery pack release button 16 and firmly pull the battery pack out of the tool handle. Insert it into the charger as described in the charger section of this manual.
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State of Charge Indicator (Fig. A, C)
The DCBL777 is equipped with a state of charge indicator 6. This will display the current level of charge in the battery during use. It does not indicate tool functionality and is subject to variation based on product components, temperature and end-user application.
- The state of charge indicator LEDs 6 will illuminate, indicating the percent of charge in the battery.
- When all four state of charge indicator LEDs 6 illuminate, the battery is fully charged.
- When one state of charge indicator LED 6 illuminates, charge is low and then it will flash when the battery is discharged. Remove the battery and charge it.
State of Charge Indicator LED Status
| LEVEL OF CHARGE | CHARGE INDICATORLED COLOR | |
| 100% - 75% White | ||
| 50% - 75% White | ||
| 20% - 50% White | ||
| ≤20% White | ||
| Low battery shutdown White and blinking. | ||
| Battery too hot All four, red and blinking. |
Proper Hand Position (Fig. H)
WARNING: To reduce the risk of serious personal injury, ALWAYS use proper hand position as shown.
WARNING: To reduce the risk of serious personal injury, ALWAYS hold securely in anticipation of a sudden reaction.
Proper hand position requires one hand on the main handle 2.
Switching On (Fig. A, H—J)
WARNING: Grip tool firmly when switching on.
CAUTION: Do not point unit discharge at self or bystanders.
CAUTION: Always wear safety glasses and hearing protection. Wear a filter mask if the operation is dusty. Use of gloves, long pants and substantial footwear is recommended. Keep long hair and loose clothing away from openings and moving parts.
-
Switch the blower on by briefly squeezing the variable speed trigger 1. The blower runs at higher speeds as the lever is moved further.
-
Release the variable speed trigger 1 to stop the blower.
- To lock the blower on, fully depress the variable speed trigger 1 and then push the speed lock button 3, as shown in Fig. H, I.
NOTE: The speed lock button 3 is not intended to function as a lock-off button for the variable speed trigger 1. - To unlock and stop the blower, press and release the trigger switch 1 or press the speed lock button 3.
- To turn the blower off, press and hold the speed button 8 as shown in Fig. J, or after sitting idle for 20 seconds the blower will automatically power off.
Adjusting Blower Speed (Fig. J)
The DCBL777 is equipped with a speed indicator 7. The speed indicator 7 will display the chosen speed of the blower. There are three speed setting LEDs, ECO mode 21 (white LED), standard mode 22 (orange LED) and turbo mode 23 (red LED). The speed indicator 7 helps you to optimize the tool's performance and runtime needed for each job.
- To set the blower speed, switch the blower on by briefly squeezing the variable speed trigger 1.
- Press the speed button 8, located on the tool handle, until the desired speed LED is illuminated.
NOTE: ECO mode 21 (white LED), standard mode 22 (orange LED) or turbo mode 23 (red LED).
NOTE: The blower defaults to ECO mode 21 (white LED). - Operate in ECO mode 21 (white LED) or standard mode 22 (orange LED) speed for most blowing needs. NOTE: Longer runtime will be achieved.
- Choose turbo mode 23 (red LED) as needed to clear heavy debris.
nOTE: Runtime will be reduced.
Speed Setting LED Colors
| SPEED SPEED SETTING LED COLOR | |
| ECO Mode White | |
| — 21 | |
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Use (Fig. H)
CAUTION: Do not point unit discharge at self or bystanders.
• Install the battery pack 15 into the tool handle.
- Hold the blower with one hand as shown in Fig. H.
• Power the blower on.
- With the tube 5 positioned several inches above the ground, and using a sweeping motion from side to side, advance slowly keeping the accumulated debris/leaves in front of you as shown in Fig. H.
MAINTENANCE
WARNING: To reduce the risk of serious personal injury, turn unit off and remove the battery pack before making any adjustments or removing/installing attachments or accessories.
An accidental start-up can cause injury.
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.
Cleaning
WARNING: Blow dirt and dust out of all air vents with clean, dry air at least once a week. To minimize the risk of eye injury, always wear ANSI Z87.1 approved eye protection when performing this procedure.
WARNING: Never use solvents or other harsh chemicals for cleaning the non-metallic parts of the tool. These chemicals may weaken the plastic materials used in these parts. Use a cloth dampened only with water and mild soap. Never let any liquid get inside the tool; never immerse any part of the tool into a liquid.
Accessories
WARNING: Since accessories, other than those offered by DEWALT, have not been tested with this product, use of such accessories with this product could be hazardous. To reduce the risk of injury, only DEWALT recommended accessories should be used with this product.
Recommended accessories for use with your product are available at extra cost from your local dealer or authorized service center. If you need assistance in locating any accessory, please contact DEWALT. Call 1-800-4-DEWALT (1-800-433-9258) or visit our website: www.dewalt.com.
Tool Connect™ Chip (Fig. K)
WARNING: To reduce the risk of serious personal injury, turn unit off and remove the battery pack before making any adjustments or removing/installing attachments or accessories. An accidental start-up can cause injury.
Your tool is Tool Connect™ Chip ready and has a location for installation of a Tool Connect™ Chip.
Tool Connect™ Chip is an optional application for your smart device (such as a smart phone or tablet) that connects the device to utilize the mobile application for inventory management functions.
Refer to Tool Connect™ Chip Instruction Sheet for more information.
Installing the Tool Connect™ Chip
- Remove the retaining screws 20 that hold the Tool Connect™ Chip protective cover 19 into the tool.
- Remove the protective cover and insert the Tool Connect™ Chip into the empty pocket 18.
- Ensure that the Tool Connect™ Chip is flush with the housing. Secure it with the retaining screws and tighten the screws.
- Refer to Tool Connect™ Chip Instruction Sheet for further instructions.
Repairs
The charger and batteries are not serviceable. There are no serviceable parts inside the charger or battery pack.
WARNING: To assure product SAFETY and RELIABILITY, repairs, maintenance and adjustment (including brush inspection and replacement, when applicable) should be performed by a factory service center or an authorized service center. Always use identical replacement parts.
Register Online
Thank you for your purchase. Register your product now for:
- WARRANTY SERVICE: Registering your product will help you obtain more efficient warranty service in case there is a problem with your product.
- CONFIRMATION OF OWNERSHIP: In case of an insurance loss, such as fire, flood or theft, your registration of ownership will serve as your proof of purchase.
- FOR YOUR SAFETY: Registering your product will allow us to contact you in the unlikely event a safety notification is required under the Federal Consumer Safety Act.
• Register online at www.dewalt.com.
Three-Year Limited Warranty
For warranty terms, go to https://www.dewalt.com/support/warranty.
To request a written copy of the warranty terms, contact: Customer Service at DEWALT Industrial Tool Co., 701 East Joppa Road, Towson, MD 21286 or call 1-800-4-DEWALT (1-800-433-9258).
LATIN AMERICA: This warranty does not apply to products sold in Latin America. For products sold in Latin America, see country-specific warranty information contained in the packaging, call the local company or see website for warranty information.
FREE WARNING LABEL REPLACEMENT: If your warning labels become illegible or are missing, call 1-800-4-DEWALT (1-800-433-9258) for a free replacement.
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Technical line drawing of a mechanical component with no visible text or symbolsEje Central Lázaro Cárdenas No. 18 - Local (55) 5588 9377 D, Col. Obrera
MERIDA, YUC
Calle 63 #459-A - Col. Centro (999) 928 5038
MONTERREY, N.L.
Av. Francisco I. Madero 831 Poniente - Col. (818) 375 23 13 Centro
PUEBLA, PUE
17 Norte #205 - Col. Centro (222) 246 3714
QUERETARO, QRO
Av. San Roque 274 - Col. San Gregorio (442) 2 17 63 14
SAN LUIS POTOSI, SLP
Col. Santa Fe Alvaro Obregon,
Ciudad de Mexico, Mexico.
C.P 01210
TEL(52) 55 53267100
R.F.C.BDE8106261W7
Registro en Línea
Use of any other battery packs may create a risk of injury and fire.
AVERTISSEMENT :
NOTE: DO NOT charge when the battery pack is below 40^ F ( 4.5^ C) or above 104^ F ( 40^ C). Do not store or use the tool and battery pack in locations where the temperature may reach or exceed 104^ F ( 40^ C).

