MAKITA DFS451 (01) PDF MANUAL

MAKITA DFS451 (01) PDF SUMMARY:

What are the specifications of the DFS451 and DFS441 cordless screwdrivers?

	DFS451	DFS441
Drywall screw capacities	4 mm (5/32")	4 mm (5/32")
No load speed (RPM)	0 – 4,000 /min	0 – 4,000 /min
Overall length (short locator)	281 mm (11-1/8")	281 mm (11-1/8")
Overall length (long locator)	296 mm (11-5/8")	296 mm (11-5/8")
Net weight	1.5 kg (3.2 lbs)	1.7 kg (3.8 lbs)
	1.4 kg (3.2 lbs)	1.6 kg (3.6 lbs)

---

What is the rated voltage for the DFS451 and DFS441?

The rated voltage for the DFS451 is D.C. 18 V, and for the DFS441, it is D.C. 14.4 V.

---

What are the standard battery cartridges that can be used with the DFS451?

The standard battery cartridges that can be used with the DFS451 are BL1815 / BL1815N / BL1820 / BL1820B / BL1830 / BL1830B / BL1840 / BL1840B / BL1850 / BL1850B / BL1860B.

---

What are the standard battery cartridges that can be used with the DFS441?

The standard battery cartridges that can be used with the DFS441 are BL1415 / BL1415N / BL1430 / BL1430B / BL1460B.

---

What are the general power tool safety warnings?

Read all safety warnings and all instructions. Failure to follow the warnings and instructions may result in electric shock, fire, and/or serious injury. Save all warnings and instructions for future reference. The term “power tool” in the warnings refers to the mains-operated (corded) power tool or battery-operated (cordless) power tool.

---

What are the work area safety guidelines for power tools?

1. Keep work area clean and well lit. Cluttered or dark areas invite accidents.
2. 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.
3. Keep children and bystanders away while operating a power tool. Distractions can cause you to lose control.

---

What are the electrical safety guidelines for power tools?

1. 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 the risk of electric shock.
2. 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.
3. Do not expose power tools to rain or wet conditions. Water entering a power tool will increase the risk of electric shock.
4. 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.
5. 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.
6. If operating a power tool in a damp location is unavoidable, use a ground fault circuit interrupter (GFCI) protected supply. Use of an GFCI reduces the risk of electric shock.

---

What are the personal safety precautions when operating power tools?

1. 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.
2. Use personal protective equipment. Always wear eye protection. Protective equipment such as dust mask, non-skid safety shoes, hard hat, or hearing protection used for appropriate conditions will reduce personal injuries.
3. Prevent unintentional starting. Ensure the switch is in the off-position before connecting to a power source and/or battery pack, picking up, or carrying the tool. Carrying power tools with your finger on the switch or energizing power tools that have the switch on invites accidents.
4. 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.
5. Do not overreach. Keep proper footing and balance at all times. This enables better control of the power tool in unexpected situations.
6. Dress properly. Do not wear loose clothing or jewelry. Keep your hair, clothing, and gloves away from moving parts. Loose clothes, jewelry, or long hair can be caught in moving parts.
7. 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.

---

What are the guidelines for power tool use and care?

1. 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.
2. 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.
3. Disconnect the plug from the power source and/or the battery pack from the power tool before making any adjustments, changing accessories, or storing power tools. Such preventive safety measures reduce the risk of starting the power tool accidentally.
4. 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.
5. Maintain power tools. Check for misalignment or binding of moving parts, breakage of parts, and any other condition that may affect the power tool’s operation. If damaged, have the power tool repaired before use. Many accidents are caused by poorly maintained power tools.
6. Keep cutting tools sharp and clean. Properly maintained cutting tools with sharp cutting edges are less likely to bind and are easier to control.
7. 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.

---

What are the safety guidelines for battery tool use and care?

1. 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.
2. Use power tools only with specifically designated battery packs. Use of any other battery packs may create a risk of injury and fire.
3. When the 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.
4. 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.

---

What should you do when your power tool needs service?

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. Follow instructions for lubricating and changing accessories. Keep handles dry, clean, and free from oil and grease.

---

What are the safety warnings specific to cordless screwdrivers?

1. Hold the power tool by insulated gripping surfaces when performing an operation where the fastener may contact hidden wiring. Fasteners contacting a “live” wire may make exposed metal parts of the power tool “live” and could give the operator an electric shock.
2. Always be sure you have a firm footing. Be sure no one is below when using the tool in high locations.
3. Hold the tool firmly.
4. Keep hands away from rotating parts.
5. Do not touch the bit or the workpiece immediately after operation; they may be extremely hot and could burn your skin.

---

What are the important safety instructions for battery cartridges?

1. Before using the battery cartridge, read all instructions and cautionary markings on (1) battery charger, (2) battery, and (3) product using battery.
2. Do not disassemble the battery cartridge.
3. If operating time has become excessively shorter, stop operating immediately. It may result in a risk of overheating, possible burns, and even an explosion.
4. If electrolyte gets into your eyes, rinse them out with clear water and seek medical attention right away. It may result in loss of eyesight.
5. Do not short the battery cartridge:
   • Do not touch the terminals with any conductive material.
   • Avoid storing battery cartridge in a container with other metal objects such as nails, coins, etc.
   • Do not expose the battery cartridge to water or rain. A battery short can cause a large current flow, overheating, possible burns, and even a breakdown.
6. Do not store the tool and battery cartridge in locations where the temperature may reach or exceed 50 ﾟ C (122 ﾟ F).
7. Do not incinerate the battery cartridge even if it is severely damaged or is completely worn out. The battery cartridge can explode in a fire.
8. Be careful not to drop or strike the battery.
9. Do not use a damaged battery.
10. Follow your local regulations relating to the disposal of the battery.
11. Only use genuine Makita batteries. Use of non-genuine Makita batteries, or batteries that have been altered, may result in the battery bursting, causing fires, personal injury, and damage. It will also void the Makita warranty for the Makita tool and charger.

---

What are some tips for maintaining maximum battery life?

1. Charge the battery cartridge before it is completely discharged. Always stop tool operation and charge the battery cartridge when you notice less tool power.
2. Never recharge a fully charged battery cartridge. Overcharging shortens the battery service life.
3. Charge the battery cartridge with room temperature at 10 ﾟ C – 40 ﾟ C (50 ﾟ F – 104 ﾟ F). Let a hot battery cartridge cool down before charging it.
4. Charge the battery cartridge if you do not use it for a long period (more than six months).

---

What do the symbols used for the tool mean?

• V … volts
• … direct current
• /min … no load speed
• r/min … revolutions or reciprocation per minute

---

How do you install or remove the battery cartridge?

1. Always switch off the tool before installing or removing the battery cartridge.
2. Hold the tool and the battery cartridge firmly when installing or removing the battery cartridge. Failure to hold the tool and the battery cartridge firmly may cause them to slip off your hands and result in damage to the tool and battery cartridge and personal injury.
3. To remove the battery cartridge, slide it from the tool while sliding the button on the front of the cartridge.
4. To install the battery cartridge, align the tongue on the battery cartridge with the groove in the housing and slip it into place. Insert it all the way until it locks in place with a little click. If you can see the red indicator on the upper side of the button, it is not locked completely.
5. Always install the battery cartridge fully until the red indicator cannot be seen. If not, it may accidentally fall out of the tool, causing injury to you or someone around you.
6. Do not install the battery cartridge forcibly. If the cartridge does not slide in easily, it is not being inserted correctly.

---

What is the battery protection system and how does it work?

The battery cartridge with a star mark is equipped with the protection system, which automatically cuts off the output power for its long service life. The tool stops during operation when the tool and/or battery are placed under the following situation. This is caused by the activation of the protection system and does not indicate tool trouble.

• When the tool is overloaded: Release the switch trigger, remove the battery cartridge, remove the causes of overload, and then pull the switch trigger again to restart.
• When battery cells get hot: If any operation of the switch trigger, the motor will remain stopped. Stop use of the tool and cool or charge the battery cartridge after removing it from the tool.
• When the remaining battery capacity gets low: If any operation of the switch trigger, the motor will remain stopped. Remove the battery cartridge from the tool and charge it.

---

How do you indicate the remaining battery capacity?

(Only for battery cartridges with “B” at the end of the model number.)

Press the check button on the battery cartridge to indicate the remaining battery capacity. The indicator lamps light up for a few seconds.

Indicator lamps	Remaining capacity
Off	Charge the battery
Blinking	0% to 25%
Lighted	25% to 50%
Lighted	50% to 75%
Lighted	75% to 100%
	The battery may have malfunctioned.

Note: Depending on the conditions of use and the ambient temperature, the indication may differ slightly from the actual capacity.

---

How does the switch action work?

1. Before inserting the battery cartridge into the tool, always check to see that the switch trigger actuates properly and returns to the “OFF” position when released.
2. To start the tool, simply pull the switch trigger. Tool speed is increased by increasing pressure on the switch trigger.
3. Release the switch trigger to stop.

Note: Even with the switch on and the motor running, the bit will not rotate until you fit the point of the bit in the screw head and apply forward pressure to engage the clutch.

---

What is the electric brake feature?

This tool is equipped with an electric brake. If the tool consistently fails to quickly stop after switch trigger release, have the tool serviced at a Makita service center.

---

How do you light up the front lamp?

1. Do not look in the light or see the source of light directly.
2. Pull the switch trigger to light up the lamp.
3. The lamp keeps lighting while the switch trigger is being pulled.
4. The lamp goes out 10 -15 seconds after releasing the trigger.

Note: Use a dry cloth to wipe the dirt off the lens of the lamp. Be careful not to scratch the lens of the lamp, or it may lower the illumination.

---

How does the reversing switch action work?

1. This tool has a reversing switch to change the direction of rotation.
2. Depress the reversing switch lever from the A side for clockwise rotation or from the B side for counterclockwise rotation.
3. When the reversing switch lever is in the neutral position, the switch trigger cannot be pulled.

• Always check the direction of rotation before operation.
• Use the reversing switch only after the tool comes to a complete stop. Changing the direction of rotation before the tool stops may damage the tool.
• When not operating the tool, always set the reversing switch lever to the neutral position.

---

How do you adjust the depth?

The depth can be adjusted by turning the locator. Turn it in the “B” direction for less depth and in the “A” direction for more depth. One full turn of the locator equals a 2 mm (1/16") change in depth. Adjust the locator so that the distance between the tip of the locator and the screw head is approximately 3 mm (1/8") as shown in the figures. Drive a trial screw into your material or a piece of duplicate material. If the depth is still not suitable for the screw, continue adjusting until you obtain the proper depth setting.

---

How do you install or remove the bit?

1. Always be sure that the tool is switched off and the battery cartridge is removed before carrying out any work on the tool.
2. To remove the bit, pull the locator. Then grasp the bit with a pair of pliers and pull the bit out of the magnetic bit holder. Sometimes, it helps to wiggle the bit with the pliers as you pull.
3. To install the bit, push it firmly into the magnetic bit holder. Then install the locator by pushing it firmly back.

---

How do you install or remove the hook?

The hook is convenient for temporarily hanging the tool. This can be installed on either side of the tool. To install the hook, insert it into a groove in the tool housing on either side and then secure it with a screw. To remove, loosen the screw and then take it out.

---

How do you perform a screwdriving operation?

1. Fit the screw on the point of the bit and place the point of the screw on the surface of the workpiece to be fastened.
2. Apply pressure to the tool and start it.
3. Withdraw the tool as soon as the clutch cuts in.
4. Then release the switch trigger.

• When fitting the screw onto the point of the bit, be careful not to push in on the screw. If the screw is pushed in, the clutch will engage and the screw will rotate suddenly. This could damage a workpiece or cause an injury.
• Make sure that the bit is inserted straight in the screw head, or the screw and/or bit may be damaged.

---

How do you maintain the tool?

1. Always be sure that the tool is switched off and the battery cartridge is removed before attempting to perform inspection or maintenance.
2. Never use gasoline, benzine, thinner, alcohol, or the like. Discoloration, deformation, or cracks may result.
3. To maintain product safety and reliability, repairs, carbon brush inspection and replacement, and any other maintenance or adjustment should be performed by Makita Authorized or Factory Service Centers, always using Makita replacement parts.

---

What are the recommended optional accessories?

• Phillips Insert bits
• Magnetic bit holder
• Makita genuine battery and charger
• Plastic carrying case

Note: Some items in the list may be included in the tool package as standard accessories. They may differ from country to country.

---

What is the Makita limited warranty policy?

Every Makita tool is thoroughly inspected and tested before leaving the factory and is warranted to be free of defects from workmanship and materials for the period of ONE YEAR from the date of original purchase. Should any trouble develop during this one-year period, return the COMPLETE tool, freight prepaid, to one of Makita’s Factory or Authorized Service Centers. If inspection shows the trouble is caused by defective workmanship or material, Makita will repair (or at their option, replace) without charge. This Warranty does not apply where: repairs have been made or attempted by others: repairs are required because of normal wear and tear: the tool has been abused, misused, or improperly maintained: alterations have been made to the tool.

IN NO EVENT SHALL MAKITA BE LIABLE FOR ANY INDIRECT, INCIDENTAL, OR CONSEQUENTIAL DAMAGES FROM THE SALE OR USE OF THE PRODUCT. THIS DISCLAIMER APPLIES BOTH DURING AND AFTER THE TERM OF THIS WARRANTY. MAKITA DISCLAIMS LIABILITY FOR ANY IMPLIED WARRANTIES, INCLUDING IMPLIED WARRANTIES OF “MERCHANTABILITY” AND “FITNESS FOR A SPECIFIC PURPOSE,” AFTER THE ONE YEAR TERM OF THIS WARRANTY. This Warranty gives you specific legal rights, and you may also have other rights which vary from state to state. Some states do not allow the exclusion or limitation of incidental or consequential damages, so the above limitation or exclusion may not apply to you. Some states do not allow limitation on how long an implied warranty lasts, so the above limitation may not apply to you.