Makita DTD172 Cordless Impact Driver Instruction Manual

makita DTD172 Cordless Impact Driver

SPECIFICATIONS

Model: DTD172
Fastening capacities Machine screw M4 – M8
Standard bolt M5 – M16
High tensile bolt M5 – M14
No load speed Max impact mode 0 – 3,600 min-1
Hard impact mode 0 – 3,200 min-1
Medium impact mode 0 – 2,100 min-1
Soft impact mode 0 – 1,100 min-1
Wood mode 0 – 1,800 min-1
Bolt mode 0 – 3,600 min-1
T mode (1) 0 – 2,900 min-1
T mode (2) 0 – 3,600 min-1
Impacts per minute Max impact mode 0 – 3,800 min-1
Hard impact mode 0 – 3,600 min-1
Medium impact mode 0 – 2,600 min-1
Soft impact mode 0 – 1,100 min-1
Wood mode 0 – 3,800 min-1
Bolt mode 0 – 3,800 min-1
T mode (1)
T mode (2) 0 – 2,600 min-1
Rated voltage D.C. 18 V
Overall length 114 mm
Net weight 1.2 – 1.5 kg
  • Due to our continuing program of research and development, the specifications herein are subject to change without notice.
  • Specifications may differ from country to country.
  • The weight may differ depending on the attachment(s), including the battery cartridge. The lightest and heaviest combination, according to EPTA-Procedure 01/2014, are shown in the table.

Applicable battery cartridge and charger

Battery cartridge BL1815N / BL1820B / BL1830B / BL1840B / BL1850B / BL1860B
Charger DC18RC / DC18RD / DC18RE / DC18SD / DC18SE / DC18SF / DC18SH

Some of the battery cartridges and chargers listed above may not be available depending on your region of residence.
WARNING: Only use the battery cartridges and chargers listed above. Use of any other battery cartridges and chargers may cause injury and/or fire.

Intended use

The tool is intended for screw driving in wood, metal and plastic.

SAFETY WARNINGS

General power tool safety warnings

WARNING: Read all safety warnings, instructions, illustrations and specifications provided with this power tool. Failure to follow all 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.

Work area safety

  1. Keep work area clean and well lit. Cluttered or dark areas invite accidents.
  2. Do not operate power tools in explosive atmo-spheres, 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.

Electrical safety

  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 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 elec-tric shock if your body is earthed or grounded.
  3. Do not expose power tools to rain or wet con-ditions. 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 residual current device (RCD) protected supply. Use of an RCD reduces the risk of electric shock.
  7. Power tools can produce electromagnetic fields (EMF) that are not harmful to the user. However, users of pacemakers and other similar medical devices should contact the maker of their device and/or doctor for advice before operating this power tool.

Personal safety

  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 med-ication. 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 a 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 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.
  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 jewellery. Keep your hair and clothing away from moving parts. Loose clothes, jewellery 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.
  8. 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.
  9. Always wear protective goggles to protect your eyes from injury when using power tools. The goggles must comply with ANSI Z87.1 in the USA, EN 166 in Europe, or AS/NZS 1336 in Australia/New Zealand. In Australia/New Zealand, it is legally required to wear a face shield to protect your face, too.
    It is an employer’s responsibility to enforce the use of appropriate safety protective equipments by the tool operators and by other persons in the immediate working area.

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 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.
  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 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.
  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.
  8. 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.
  9. When using the tool, do not wear cloth work gloves which may be entangled. The entanglement of cloth work gloves in the moving parts may result in personal injury.

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 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.
  5. 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.
  6. Do not expose a battery pack or tool to fire or excessive temperature. Exposure to fire or temperature above 130 °C may cause explosion.
  7. Follow all charging instructions and do not charge the battery pack or tool outside the temperature range specified in the instruc-tions. Charging improperly or at temperatures outside the specified range may damage the battery and increase the risk of fire.

Service

  1. 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.
  2. Never service damaged battery packs. Service of battery packs should only be performed by the manufacturer or authorized service providers.
  3. Follow instruction for lubricating and changing accessories.

Cordless impact driver safety warnings

  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. Wear ear protectors.
  5. Do not touch the bit or the workpiece immediately after operation. They may be extremely hot and could burn your skin.
  6. Keep hands away from rotating parts.
  7. Use auxiliary handle(s), if supplied with the tool. Loss of control can cause personal injury.
  8. Hold the power tool by insulated gripping surfaces, when performing an operation where the cutting accessory may contact hidden wiring. Cutting accessory contacting a “live” wire may make exposed metal parts of the power tool “live” and could give the operator an electric shock.
  9. Make sure there are no electrical cables, water pipes, gas pipes etc. that could cause a hazard if damaged by use of the tool.
SAVE THESE INSTRUCTIONS.

WARNING: DO NOT let comfort or familiarity with product (gained from repeated use) replace strict adherence to safety rules for the subject product.
MISUSE or failure to follow the safety rules stated in this instruction manual may cause serious personal injury.

Important safety instructions for battery cartridge

  1. Before using battery cartridge, read all instruc-tions and cautionary markings on (1) battery charger, (2) battery, and (3) product using battery.
  2. Do not disassemble or tamper with the battery cartridge. It may result in a fire, excessive heat, or explosion.
  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 your eyesight.
  5. Do not short the battery cartridge:
    1. Do not touch the terminals with any conductive material.
    2. Avoid storing battery cartridge in a container with other metal objects such as nails, coins, etc.
    3. Do not expose 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 and use the tool and battery cartridge in locations where the temperature may reach or exceed 50 °C (122 °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. Do not nail, cut, crush, throw, drop the battery cartridge, or hit against a hard object to the battery cartridge. Such conduct may result in a fire, excessive heat, or explosion.
  9. Do not use a damaged battery.
  10. The contained lithium-ion batteries are subject to the Dangerous Goods Legislation require-ments.
    For commercial transports e.g. by third parties, forwarding agents, special requirement on packaging and labeling must be observed.
    For the preparation of the item being shipped, consult-ing an expert for hazardous material is required. Please also observe possibly more detailed national regulations.
    Tape or mask off open contacts and pack up the battery in such a manner that it cannot move around in the packaging.
  11. When disposing the battery cartridge, remove it from the tool and dispose of it in a safe place. Follow your local regulations relating to disposal of battery.
  12. Use the batteries only with the products specified by Makita. Installing the batteries to non-compliant products may result in a fire, excessive heat, explosion, or leak of electrolyte.
  13. If the tool is not used for a long period of time, the battery must be removed from the tool.
  14. During and after use, the battery cartridge may take on heat which can cause burns or low-temperature burns. Pay attention to the handling of hot battery cartridges.
  15. Do not touch the terminal of the tool immediately after use as it may get hot enough to cause burns.
  16. Do not allow chips, dust, or soil stuck into the terminals, holes, and grooves of the battery cartridge. It may result in poor performance or breakdown of the tool or battery cartridge.
  17. Unless the tool supports the use near high-voltage electrical power lines, do not use the battery cartridge near high-voltage electrical power lines. It may result in a malfunction or breakdown of the tool or battery cartridge.
  18. Keep the battery away from children.

SAVE THESE INSTRUCTIONS.

CAUTION: 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.

Tips for maintaining maximum battery life

  1. Charge the battery cartridge before 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 °C – 40 °C (50 °F – 104 °F). Let a hot battery cartridge cool down before charging it.
  4. When not using the battery cartridge, remove it from the tool or the charger.
  5. Charge the battery cartridge if you do not use it for a long period (more than six months).

FUNCTIONAL DESCRIPTION

CAUTION: Always be sure that the tool is switched off and the battery cartridge is removed before adjusting or checking function on the tool.

Installing or removing battery cartridge

CAUTION: Always switch off the tool before installing or removing of the battery cartridge.
CAUTION: Hold the tool and the battery car-tridge firmly when installing or removing 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 a personal injury.

  1. Red indicator
  2. Button
  3. Battery cartridge

To remove the battery cartridge, slide it from the tool while sliding the button on the front of the cartridge.
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 as shown in the figure, it is not locked completely.

CAUTION: 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.
CAUTION: Do not install the battery cartridge forcibly. If the cartridge does not slide in easily, it is not being inserted correctly.

Tool / battery protection system

The tool is equipped with a tool/battery protection system. This system automatically cuts off power to the motor to extend tool and battery life. The tool will automatically stop during operation if the tool or battery is placed under one of the following conditions:

Overload protection
When the battery is operated in a manner that causes it to draw an abnormally high current, the tool stops automatically. In this situation, turn the tool off and stop the application that caused the tool to become overloaded. Then turn the tool on to restart.

Overheat protection
When the tool/battery is overheated, the tool stops automatically and the lamp blinks. In this situation, let the tool/battery cool before turning the tool on again.

Over-discharge protection
When the battery capacity is not enough, the tool stops automatically. In this case, remove the battery from the tool and charge the battery.

Indicating the remaining battery capacity

Only for battery cartridges with the indicator

  1. Indicator lamps
  2. Check button

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

NOTE: Depending on the conditions of use and the ambient temperature, the indication may differ slightly from the actual capacity.
NOTE: The first (far left) indicator lamp will blink when the battery protection system works.

Switch action
  1. Switch trigger

CAUTION: Before installing the battery cartridge into the tool, always check to see that the switch trigger actuates properly and returns to the “OFF” position when released. Before installing the battery cartridge into the tool, always check to see that the switch trigger actuates properly and returns to the “OFF” position when released.

To start the tool, simply pull the switch trigger. Tool speed is increased by increasing pressure on the switch trigger. Release the switch trigger to stop.

NOTE: The tool automatically stops if you keep pull-ing the switch trigger for about 6 minutes.
NOTE: While pulling the switch trigger, any other buttons do not work.

Reversing switch action
  1. Reversing switch lever

CAUTION: Always check the direction of rotation before operation.
CAUTION: 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.
CAUTION: When not operating the tool, always set the reversing switch lever to the neutral position.

This tool has a reversing switch to change the direction of rotation. Depress the reversing switch lever from the A side for clockwise rotation or from the B side for coun-terclockwise rotation.
When the reversing switch lever is in the neutral posi-tion, you cannot start the tool.

Electric brake

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

Lighting up the front lamp

CAUTION: Do not look in the light or see the source of light directly.

  1. Front lamp

  1. Button
  2. Switch panel

Pull the switch trigger to turn on the front lamps. To turn off, release the switch trigger. The front lamps go out approximately 10 seconds after releasing the switch trigger.
To turn off the front lamps within 10 seconds, press and hold the button for a few seconds.
To disable the front lamps, turn off the lamp status. To turn off the lamp status, first pull and release the switch trigger. Within 10 seconds after releasing the switch trigger, press and hold the button for a few seconds. When the lamp status is off, the front lamps will not turn on even if the trigger is pulled.
To turn on the lamp status again, press and hold the button for a few seconds.
NOTE: When the tool is overheated, the front lamps flash for one minute, and then the switch panel goes off. In this case, cool down the tool before operating again.
NOTE: To confirm the lamp status, pull the trigger when the reversing switch lever is not in the neutral position. When the front lamps light up by pulling the switch trigger, the lamp status is on. When the front lamps do not light up, the lamp status is off.
Use a dry cloth to wipe the dirt off the lens of the from note:t lamps. Be careful not to scratch the lens of front lamps, or it may lower the illumination.

Light mode

You can use the tool as a handy light.
To turn on the light, set the reversing switch lever in the neutral position and pull the switch trigger.
The lamp keeps lighting up for approximately one hour. To turn off the light, pull the switch trigger again or depress the reversing switch lever.

NOTE: You cannot change the application mode while the light mode is on. The lamps on the switch panel do not turn on when the light mode is on.
NOTE: You cannot turn on/off the lamp status or change the application mode when the light mode is on.
NOTE: The light mode does not work when the tool/battery protection system activates or the battery capacity is not enough.

Changing the application mode

What’s the application mode?
The application mode is the variation of the driving rotation and impact which are already preset in the tool. By choosing a suitable application mode depending on the work, you can accomplish quicker work and/or more beautiful finish.
This tool features following application modes:

Impact force

  1. Quick mode-switching button
  2. Button
  3. Button

NOTE: When none of the lamp on the panel is lit, pull the switch trigger once before pressing the quick mode-switching button.
NOTE: You will not be able to change the application mode if you do not operate the tool for approximately one minute. In this case, pull the switch trigger
once and press the button, button, or quick mode-switching button.
NOTE: Refer to “Registering the application mode” in “Quick mode-switching function” section for how to register the application mode.

Quick mode-switching button
The function of the quick mode-switching button varies depending on whether you have registered the application mode to the tool.

  1. Quick mode-switching button

When the application mode is not registered:
The level of impact force changes every time you press the quick mode-switching button. The front lamps on both sides will flash once when the impact force is changed by pressing the quick mode-switching button.

When the application mode is registered:
The tool switches between the registered application mode and current application mode every time you press the quick mode-switching button. The front lamps on both sides will flash once when the application mode is changed by pressing the quick mode-switching button.

Quick reference

The following table shows the functions of the quick mode-switching button.

Changing the impact force
You can change the impact force in four steps: 4 (max), 3 (hard), 2 (medium), and 1 (soft).
This allows a tightening suitable to the work.
The level of impact force changes every time you press the button or the quick mode-switching button.
You can change the impact force within approximately one minute after releasing the switch trigger.

NOTE: You can extend the time to change the impact force approximately one minute if you press the button ,, or the quick mode-switching button.

  1. Button

NOTE: When none of the lamp on the panel is lit, pull the switch trigger once before pressing the button or the quick mode-switching button.
NOTE: All lamps on the switch panel go out when the tool is turned off to save the battery power. The impact force grade can be checked by pulling the switch trigger to the extent that the tool does not operate.

Changing assist type
This tool employs assist function that offers several easy-to-use application modes for driving screws with good control.
The type of the application mode changes every time you press the button .
You can change the assist type within approximately one minute after releasing the switch trigger.

NOTE: You can extend the time to change the assist type approximately one minute if you press the button , , or the quick mode-switching button.

  1. Button

NOTE: When none of the lamp on the panel is lit, pull the switch trigger once before pressing the button .
NOTE: All lamps on the switch panel go out when the tool is turned off to save the battery power. The type of the application mode can be checked by pulling the switch trigger to the extent that the tool does not operate.

Quick mode-switching function

What you can do with the quick mode-switching function
The quick mode-switching function saves the time for changing the application mode of the tool. You can switch to your desired application mode by just pressing the quick mode-switching button. It is helpful when doing a repetitive work which requires to switch between two application modes alternately.

EXAMPLE If you have a work to use T mode and max impact force, register the max impact force for quick mode-switching function. Once register it, you can switch to the max impact force from T mode by just one click of the quick mode-switching button. Also, you can return to T mode by pressing the quick mode-switching button again.
Even if the tool is in another application mode than T mode, pressing the quick mode-switching button changes to max impact force. It is convenient for you to register a application mode that you frequently use.
You can choose one of the following application modes for quick mode-switching function: Impact force

Registering application mode
To use the quick mode-switching function, register your desired application mode to the tool beforehand.

  1. With the button or , choose your desired application mode.
  2. Press and hold the buttonand the quick mode-switching button at the same time until the lamp of desired application mode blinks.

  1. Quick mode-switching button
  2. Button

NOTE: You can overwrite the current application mode with new one by performing the procedure above.

Using the quick mode-switching function
When the tool is in the mode that is not registered, press the quick mode-switching button to switch to the registered application mode. The tool switches between the registered application mode and last application mode every time you press the quick mode-switching button. The front lamps on both sides will flash once when switching to the registered application mode. The lamp of the registered application mode will blink when using the registered application mode.

Erasing the registered application mode

Press and hold the buttonand button at the same time until all impact force grade lamps blink.
NOTE: After erasing the registered application mode, the quick mode-switching button works for changing the impact force.

Indication patterns

ASSEMBLY

CAUTION: Always be sure that the tool is switched off and the battery cartridge is removed before carrying out any work on the tool.

Installing or removing driver bit/socket bit
Use only driver bit/socket bit that has inserting portion shown in the figure. Do not use any other driver bit/socket bit.

For tool with shallow driver bit hole

A=12mm B=9mm Use only these type of driver bit. Follow the procedure 1. (Note) Bit-piece is not necessary.

For tool with deep driver bit hole

A=17mm B=14mm To install these types of driver

bits, follow the procedure 1.

A=12mm B=9mm To install these types of driver bits, follow the procedure 2. (Note) Bit-piece is necessary for installing the bit.
Procedure 1

For tool without one-touch type sleeve

  1. Driver bit
  2. Sleeve

To install the driver bit, pull the sleeve in the direction of the arrow and insert the driver bit into the sleeve as far as it will go.
Then release the sleeve to secure the driver bit.

For tool with one-touch type sleeve
To install the driver bit, insert the driver bit into the sleeve as far as it will go.

Procedure 2

In addition to Procedure 1, insert the bit-piece into the sleeve with its pointed end facing in.

  1. Driver bit
  2. Bit-piece
  3. Sleeve

To remove the driver bit, pull the sleeve in the direction of the arrow and pull the driver bit out.

NOTE: If the driver bit is not inserted deep enough into the sleeve, the sleeve will not return to its original position and the driver bit will not be secured. In this case, try re-inserting the bit according to the instruc-tions above.
NOTE: When it is difficult to insert the driver bit, pull the sleeve and insert it into the sleeve as far as it will go.
NOTE: After inserting the driver bit, make sure that it is firmly secured. If it comes out, do not use it.

Installing hook

CAUTION: When installing the hook, always secure it with the screw firmly. If not, the hook may come off from the tool and result in personal injury.
CAUTION: Use the hanging/mounting parts for their intended purposes only. Using for unin-tended purpose may cause accident or personal injury.

  1. Groove
  2. Hook
  3. Screw

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.

OPERATION

The proper fastening torque may differ depending upon the kind or size of the screw/bolt, the material of the workpiece to be fastened, etc. The relation between fas-tening torque and fastening time is shown in the figures.

Proper fastening torque for standard bolt

Proper fastening torque for high tensile bolt
Hold the tool firmly and place the point of the driver bit in the screw head. Apply forward pressure to the tool to the extent that the bit will not slip off the screw and turn the tool on to start operation.
NOTICE: If you use a spare battery to continue the operation, rest the tool at least 15 min.

NOTE: Use the proper bit for the head of the screw/bolt that you wish to use.
NOTE: When fastening M8 or smaller screw, choose a proper impact force and carefully adjust pressure on the switch trigger so that the screw is not damaged.
NOTE: Hold the tool pointed straight at the screw.
NOTE: If the impact force is too strong or you tighten the screw for a time longer than shown in the figures, the screw or the point of the driver bit may be over-stressed, stripped, damaged, etc. Before starting your job, always perform a test operation to determine the proper fastening time for your screw.

The fastening torque is affected by a wide variety of factors including the following. After fastening, always check the torque with a torque wrench.

  1. When the battery cartridge is discharged almost completely, voltage will drop and the fastening torque will be reduced.
  2. Driver bit or socket bit
    Failure to use the correct size driver bit or socket bit will cause a reduction in the fastening torque.
  3. Bolt
    • Even though the torque coefficient and the class of bolt are the same, the proper fasten-ing torque will differ according to the diameter of bolt.
    • Even though the diameters of bolts are the same, the proper fastening torque will differ according to the torque coefficient, the class of bolt and the bolt length.
  4. The manner of holding the tool or the material of driving position to be fastened will affect the torque.
  5. Operating the tool at low speed will cause a reduction in the fastening torque.

MAINTENANCE

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

OPTIONAL ACCESSORIES

CAUTION: These accessories or attachments are recommended for use with your Makita tool specified in this manual. The use of any other accessories or attachments might present a risk of injury to persons. Only use accessory or attachment for its stated purpose.

If you need any assistance for more details regarding these accessories, ask your local Makita Service Center.
NOTE: Some items in the list may be included in the tool package as standard accessories. They may differ from country to country.