Makita DTD171 Manual

FUNCTIONAL DESCRIPTION

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

Always switch off the tool before installing or removing of the battery cartridge.

Hold the tool and the battery cartridge 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.
► Fig.1:

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.

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.

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

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. In this situation, let the tool/battery cool before turning the tool on again.

Overdischarge 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
► Fig.2:

1. Indicator lamps
2. Check button

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

1. Switch trigger

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 pulling the switch trigger for about 6 minutes.
NOTE: While pulling the switch trigger, any other buttons do not work.

Lighting up the front lamp

Do not look in the light or see the source of light directly.
► Fig.4:

1. Lamp

► Fig.5:

1. Button

Pull the switch trigger to turn on the lamp. To turn off, release it. The lamp goes out approximately 10 seconds after releasing the switch trigger.
To keep the lamp off, turn off the lamp status. To turn off the lamp status, first pull and release the switch trigger.
And then press the button within 10 seconds. To turn on the lamp status again, press the button again similarly.
NOTE: When the tool is overheated, the light flashes for one minute, and then the LED display goes off. In this case, cool down the tool before operating again.
NOTE: To confirm the lamp status, pull the trigger. When the lamp lights up by pulling the switch trigger, the lamp status is ON. When the lamp does not come on, the lamp status is OFF.
NOTE: Use a dry cloth to wipe the dirt off the lens of the lamp. Be careful not to scratch the lens of lamp, or it may lower the illumination.

Reversing switch action
► Fig.6:

1. Reversing switch lever

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.
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 counterclockwise rotation.
When the reversing switch lever is in the neutral position, the switch trigger cannot be pulled.

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

• Max
• Hard
• Medium
• Soft

Assist type

• Wood mode
• Bolt mode
• T mode (1)
• T mode (2)

The application mode can be changed by the button , or the quick mode-switching button.
► Fig.7:

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

By registering a certain application mode to the tool, you can switch to the registered application mode by just pressing the quick mode-switching button (quick mode-switching function).
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.
► Fig.8:

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.
NOTE: When the lamp status is off, the lamps will not flash even when the application mode is changed by pressing the quick mode-switching button.
NOTE: Refer to "Registering the application mode" in "Quick mode-switching function" section for how to register the application mode.

Disabling the quick mode-switching button
You can also disable the quick mode-switching button. After disabling, the quick mode-switching button will not work for changing the impact force and switching the application mode.
To disable the quick mode-switching button, press and hold the quick mode-switching button and the button at the same time until the all lamps on the panel blink.
To resume the quick mode-switching button, perform the same procedure as above again.
NOTE: Registering and erasing the application mode can be performed even if the quick mode-switching button is disabled. After registering or erasing the application mode, the quick mode-switching button will be activated.

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

Button(s) / Purpose	How to confirm
+ Registering the application mode	The customize lamp and the lamp of desired application mode blinks.
(When quick mode-switching function is OFF) Changing the impact force by the quick mode-switching button	The lamps on the tool flash once.
(When quick mode-switching function is ON) Switching to the registered application mode	The lamps on the tool flash once.
+ Erasing the registered application mode	The customize lamp and all impact force grade lamps blink.
+ Disabling/resuming the quick mode-switching button	All lamps on the panel blink.

Changing the impact force
You can change the impact force in four steps: max, hard, medium, and soft.

Application mode (Impact force grade displayed on panel)	Maximum blows	Purpose	Example of application
Max	3,800 min-1 (/min)	Tightening with the maximum force and speed.	Driving screws to underwork materials, tightening long screws or bolts.
Hard	3,600 min-1 (/min)	Tightening with less force and speed than Max mode (easier to control than Max mode).	Driving screws to underwork materials, tightening bolts.
Medium	2,600 min-1 (/min)	Tightening when a good finishing is needed.	Driving screws to finishing boards or plaster boards.
Soft	1,100 min-1 (/min)	Tightening with less force to avoid screw thread breakage.	Tightening sash screws or small screws such as M6.

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 impact force within approximately one minute after releasing the switch trigger or pressing the button , or the quick mode-switching button.
► Fig.9:

1. Button

Application mode (Assist type displayed on panel)	Maximum blows	Feature	Purpose
Wood mode *1	3,800 min-1 (/min)	This mode helps to prevent a screw from falling at the beginning of driving. The tool drives a screw with low-speed rotation at first. After the tool starts to impact, the rotation speed increases and reaches the maximum speed.	Tightening long screws.
Bolt mode (reverse rotation auto stop) *1 *2	3,800 min-1 (/min)	This mode helps to prevent a bolt from falling off. When loosening a bolt with the tool driving in counterclockwise rotation, the tool automatically stops after the bolt/nut gets enough loosened. The stroke of the switch trigger to reach maximum speed will become short in this mode.	Loosening bolts.
T mode (1) *1	– (The tool stops rotating soon after impact starts.)	This mode helps to prevent the screws from over-tightening. It also accomplishes quick operation and good finish at the same time. The tool drives a screw with high-speed rotation and stops soon after the tool starts to impact. NOTE: The timing to stop the driving varies depending on the type of the screw and material to be driven. Make a test driving before using this mode.	Driving self-drilling screws to a thin metal plate with good finish.
T mode (2) *1	2,600 min-1 (/min)	This mode helps to prevent the screws from breakage and stripping. It also accomplishes quick operation and good finish at the same time. The tool drives a screw with high-speed rotation and slows down the rotation when the tool starts to impact. NOTE: Release the switch trigger as soon as the tightening finished to avoid overtightening.	Driving self-drilling screws to a thick metal plate with good finish.

*1: Automatic speed control works only when the switch trigger is fully pulled.
*2: Reverse rotation auto stop works only when the tool is driving in counterclockwise rotation.
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 modeswitching 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 other 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 following application modes for quick mode-switching function:

Impact force

• Max
• Hard
• Medium
• Soft

Assist type

• Wood mode
• Bolt mode
• T mode (1)
• T mode (2)

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 button and the quick mode-switching button at the same time until the customize lamp and the lamp of desired application mode blinks.

► Fig.11:

1. Quick mode-switching button
2. Customize lamp

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.
NOTE: The customize lamp will light up when the application mode registered to the tool is chose.

Cancelling the quick mode-switching function
Press and hold the button and quick mode-switching button at the same time until the customize lamp and all impact force grade lamps blink.
NOTE: After cancelling the quick mode-switching function, the quick mode-switching button works for changing the impact force.

ASSEMBLY

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
► Fig.12
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

For tool with deep driver bit hole

Procedure 1
For tool without one-touch type sleeve
► Fig.13:

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.
► Fig.14:

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 instructions 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

Use the hanging/mounting parts for their intended purposes only, e.g., hanging the tool on a tool belt between jobs or work intervals.

Be careful not to overload the hook as too much force or irregular overburden may cause damages to the tool resulting in personal injury.

When installing the hook, always secure it with the screw firmly. If not, the hook may come off from the tool and result in the personal injury.

Make sure to hang the tool securely before releasing your hold. Insufficient or unbalanced hooking may cause falling off and you may be injured.
► Fig.15:

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.

Using hole

Never use the hanging hole for unintended purpose, for instance, tethering the tool at high location. Bearing stress in a heavily loaded hole may cause damages to the hole, resulting in injuries to you or people around or below you.
► Fig.16:

1. Hanging hole
   Use the hanging hole at the bottom rear of the tool to hang the tool on a wall using a hanging cord or similar strings.

OPERATION

► Fig.17
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 fastening torque and fastening time is shown in the figures.

Proper fastening torque for standard bolt

1. Fastening time (second)
2. Fastening torque

Proper fastening torque for high tensile bolt

1. Fastening time (second)
2. Fastening torque

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 overstressed, 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 fastening 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

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

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.

• Driver bits
• Socket bits
• Bit piece
• Hook
• Tool hanger
• Plastic carrying case
• Makita genuine battery and charger
• Battery protector