BTW121 - Screwdriver MAKITA - Free user manual and instructions

Technical specifications	Cordless impact driver, 12V, maximum torque of 130 Nm, no-load speed of 0-2,600 rpm, impact rate of 0-3,200 ipm.
Usage	Ideal for screwing and unscrewing in wood, metal, and plastic. Suitable for DIY tasks and professional applications.
Maintenance and repair	Regularly check the condition of the battery and accessories. Clean the air filter and ventilation openings. Replace worn parts with original parts.
Safety	Wear safety glasses and gloves during use. Do not exceed the recommended torque limits to avoid injuries.
General information	Lightweight for easy handling, lithium-ion battery for extended autonomy, compatibility with other tools in the MAKITA 12V range.

Frequently Asked Questions - BTW121 MAKITA

How do I charge the battery of the MAKITA BTW121 impact driver?

To charge the battery, insert it into the compatible MAKITA charger and plug the charger into a power outlet. The charger LED will indicate the charging status.

What should I do if the impact driver does not start?

Check that the battery is properly charged and inserted. Also ensure that the safety lock is not activated.

How do I change the rotation direction of the impact driver?

Use the reverse button located near the trigger to change the rotation direction. Make sure the impact driver is stopped before changing the direction.

What type of screws is compatible with the MAKITA BTW121 impact driver?

The MAKITA BTW121 impact driver is compatible with a variety of screws, including wood screws, metal screws, and panel screws. Make sure to use appropriate bits.

Is the MAKITA BTW121 impact driver equipped with LED lighting?

Yes, the impact driver features built-in LED lighting to illuminate the work area, which is convenient in dark environments.

How do I maintain my MAKITA BTW121 impact driver?

To ensure proper functioning, regularly clean the impact driver of dust and debris. Also check the condition of the battery and bits.

What is the warranty for the MAKITA BTW121 impact driver?

The MAKITA BTW121 impact driver generally comes with a 3-year warranty, but this may vary depending on the retailer. Check your receipt for details.

How do I know if the battery of my impact driver needs to be replaced?

If the impact driver does not hold a charge or turns off quickly during use, it may be time to replace the battery. Also check the battery life indicated in the user manual.

Can I use the MAKITA BTW121 impact driver for heavy-duty work?

The MAKITA BTW121 impact driver is designed for light to moderate tasks. For heavy-duty applications, it is recommended to use a more powerful model.

Where can I find spare parts for my MAKITA BTW121 impact driver?

Spare parts can be found at authorized MAKITA dealers or on the MAKITA website. Make sure to use original parts to ensure performance.

USER MANUAL BTW121 MAKITA

Explanation of general view

1 Red part
2 B u t t o n
3 Battery cartridge
4 Terminal cover
5 Charging lights
6 Battery charger
7 Socket
8 Anvil
9 P i n

10 O-ring
11 Switch trigger
12 Reversing switch lever
13 A side
14 B side
15 Clockwise
16 Counterclockwise
17 Example: Setting dial 52
18 First digit

19 Second digit
20 Fastening time
21 Seconds
22 Number of impact
23 Dial setting
24 Limit mark
25 Brush holder cap
26 Screwdriver

SPECIFICATIONS

Model BTW121

Capacities

Standard bolt 8mm-14mm

High tensile bolt .6mm-12mm

Square drive 12.7 mm

No load speed (^-1) 0-2,300

Impacts per minute 0-3,000

Max. fastening torque 120N·m

Overall length 176 mm

Net weight (with battery cartridge) 1.5 kg

Rated voltage D.C. 12 V

• Due to our continuing program of research and development, the specifications herein are subject to change without notice.
  Note: Specifications may differ from country to country.

Safety Hints

For your own safety, please refer to the enclosed safety instructions.

IMPORTANT SAFETY INSTRUCTIONS FOR CHARGER & BATTERY

ENC002-3

1. SAVE THESE INSTRUCTIONS - This manual contains important safety and operating instructions for battery charger.
2. Before using battery charger, read all instructions and cautionary markings on (1) battery charger, (2) battery, and (3) product using battery.
3. CAUTION - To reduce risk of injury, charge only MAKITA type rechargeable batteries. Other types of batteries may burst causing personal injury and damage.
4. Do not expose charger to rain or snow.
5. Use of an attachment not recommended or sold by the battery charger manufacturer may result in a risk of fire, electric shock, or injury to persons.
6. To reduce risk of damage to electric plug and cord, pull by plug rather than cord when disconnecting charger.
7. Make sure cord is located so that it will not be stepped on, tripped over, or otherwise subjected to damage or stress.
8. Do not operate charger with damaged cord or plug — replace them immediately.

9. Do not operate charger if it has received a sharp blow, been dropped, or otherwise damaged in any way; take it to a qualified serviceman.

10. Do not disassemble charger or battery cartridge; take it to a qualified serviceman when service or repair is required. Incorrect reassembly may result in a risk of electric shock or fire.

11. To reduce risk of electric shock, unplug charger from outlet before attempting any maintenance or cleaning. Turning off controls will not reduce this risk.
12. The battery charger is not intended for use by young children or infirm persons without supervision.
13. Young children should be supervised to ensure that they do not play with the battery charger.
14. If operating time has become excessively shorter, stop operating immediately. It may result in a risk of overheating, possible burns and even an explosion.
15. 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.

ADDITIONAL SAFETY RULES FOR CHARGER & BATTERY CARTRIDGE

1. Do not charge battery cartridge when temperature is BELOW 10^ (50°F) or ABOVE 40^ (104°F).
2. Do not attempt to use a step-up transformer, an engine generator or DC power receptacle.
3. Do not allow anything to cover or clog the charger vents.
4. 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.

1. Do not store the tool and battery cartridge in locations where the temperature may reach or exceed 50^ (122^) .
2. 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.
3. Be careful not to drop, shake or strike battery.
4. Do not charge inside a box or container of any kind. The battery must be placed in a well ventilated area during charging.

ADDITIONAL SAFETY RULES FOR TOOL

ENB025-1

1. Be aware that this tool is always in an operating condition, because it does not have to be plugged into an electrical outlet.
2. Hold tool by insulated gripping surfaces when performing an operation where the cutting tool may contact hidden wiring. Contact with a "live" wire will also make exposed metal parts of the tool "live" and shock the operator.
3. Wear ear protectors.
4. Check the socket carefully for wear, cracks or damage before installation.
5. Hold the tool firmly.
6. Always be sure you have a firm footing.
7. Be sure no one is below when using the tool in high locations.
8. The proper fastening torque may differ depending upon the kind or size of the bolt. Check the torque with a torque wrench.

OPERATING INSTRUCTIONS

Installing or removing battery cartridge (Fig. 1)

• Always switch off the tool before insertion or removal of the battery cartridge.
• To remove the battery cartridge, withdraw it from the tool while sliding the button on the side of the cartridge.
• To insert the battery cartridge, align the tongue on the battery cartridge with the groove in the housing and slip it into place. Always insert it all the way until it locks in place with a little click. If you can see the red part on the upper side of the button, it is not locked completely. Insert it fully until the red part cannot be seen. If not, it may accidentally fall out of the tool, causing injury to you or someone around you.
• Do not use force when inserting the battery cartridge. If the cartridge does not slide in easily, it is not being inserted correctly.

SAVE THESE INSTRUCTIONS.

Charging (Fig. 2)

1. Plug the battery charger into the proper A/C voltage source. Two charging lights will flash in green color repeatedly.
2. Insert the battery cartridge into charger until it stops adjusting to the guide of charger. Terminal cover of charger can be opened with inserting and closed with pulling out the battery cartridge.
3. When the battery cartridge is inserted, the charging light color will change from green to red and charging will begin. The charging light will keep lighting up lit steadily during charging. One red charging light indicates charged condition in 0 - 80% and two red ones indicate 80 - 100% .
4. With finish of charge, the charging lights will change from two red ones to two green ones.
5. If you leave the battery cartridge in the charger after the charging cycle is complete, the charger will switch into its "trickle charge (maintenance charge)" mode which will last approximately 24 hours.
6. After charging, unplug the charger from the power source. Refer to the table below for the charging time.

Battery type Capacitance (mAh) Number of cells Charging time
BH1220 2,000 10	Approx. 30 min.
BH1233 3,300 10	Approx. 50 min.

NOTE:

• The battery charger is for charging Makita-battery cartridge. Never use it for other purposes or for other manufacturer's batteries.
• When you charge a new battery cartridge or a battery cartridge which has not been used for a long period of time, it may not accept a full charge. This is a normal condition and does not indicate a problem. You can recharge the battery cartridge fully after discharging it completely and recharging a couple of times.
• If you charge a battery cartridge from a just-operated tool or battery cartridge which has been left in a location exposed to direct sunlight for a long time, the charging light may flash in red color. If this occurs, wait for a while. Charging will begin after the battery cartridge is cooled by the cooling fan installed in the charger. When the temperature on battery is more than approx. 70^ , two charging lights may flash in red color, and when approx. 50^ - 70^ , one charging light in red color.
• If the charging light flashes alternately in green and red color, charging is not possible. The terminals on the charger or battery cartridge are clogged with dust or the battery cartridge is worn out or damaged.

Cooling system

• This charger is equipped with cooling fan for heated battery in order to enable the battery to prove its own performance. Sound of cooling air comes out during cooling, which means no trouble on the charger.
• Yellow light will flash for warning in the following cases.
• Trouble on cooling fan
• Incomplete cool down of battery, such as, being clogged with dust The battery can be charged in spite of the yellow warning light. But the charging time will be longer than usual in this case.
• Check the sound of cooling fan, vent on the charger and battery, which can be sometime clogged with dust.
• The cooling system is in order although no sound of cooling fan comes out, if the yellow warning light will not flash.
• Always keep clean the vent on charger and battery for cooling.
• The products should be sent to repair or maintenance, if the yellow warning light will frequently flash.

Conditioning charge

Conditioning charge can extend the life of battery by automatically searching the optimum charging condition for the batteries in every situation.

The battery employed in the following conditions repeatedly, will be worn out shortly, and yellow warning light may flash.

1. Recharge of battery with its high temperature
2. Recharge of battery with its low temperature
3. Recharge of full charged battery
4. Over-discharge of battery (continue to discharge battery in spite of down of power.)
5. Recharge under broken cooling system

The charging time of such battery is longer than usual.

Trickle charge (Maintenance charge)

If you leave the battery cartridge in the charger to prevent spontaneous discharging after full charge, the charger will switch into its "trickle charge (maintenance charge)" mode and keep the battery cartridge fresh and fully charged.

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^ - 40^ (50^ - 104^) . Let a hot battery cartridge cool down by inserting it into the charger.
4. Charge the Nickel Metal Hydride battery cartridge when you do not use it for more than six months.

Selecting correct socket

Always use the correct size socket for bolts and nuts. An incorrect size socket will result in inaccurate and inconsistent fastening torque and/or damage to the bolt or nut.

Installing or removing socket (Fig. 3 & 4)

CAUTION:

Always be sure that the tool is switched off and the battery cartridge is removed before installing or removing the socket.

1. For socket without O-ring and pin

To install the socket, push it onto the anvil of the tool until it locks into place. To remove the socket, simply pull it off.

2. For socket with O-ring and pin

• Move the O-ring out of the groove in the socket and remove the pin from the socket. Fit the socket onto the anvil of the tool so that the hole in the socket is aligned with the hole in the anvil. Insert the pin through the hole in the socket and anvil. Then return the O-ring to the original position in the socket groove to retain the pin. To remove the socket, follow the installation procedures in reverse.

Switch action (Fig.5)

CAUTION:

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.

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

Reversing switch action (Fig. 6)

CAUTION:

• 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.

Auto-stop setting for number of impacts (Fig. 7)

This tool has a convenient auto-stop mechanism that allows you to preset the desired number of impacts in terms of the application. The tool then stops automatically after reaching the preset number of impacts.

1. To set the dial on the back of the tool, first slide out the battery cartridge by sliding the button on the side of the cartridge.
2. Two dials can be seen on the battery holder side. Use a slotted screwdriver to set the dial to a desired 2-digit setting.
3. You cannot set the auto-stop setting for fastening with more than 200 impacts (over 4 sec.)

Note:

Do not force the dial when turning. You might break it.

Dial setting and function (Fig. 7)

Bolt fastening

Dial setting Clockwise Counterclockwise Application
01 - 98	Tool stops after the twice the set number of impacts is reached. See the next section for the appropriate fastening torque.	Pull the trigger to start the tool; release it to stop.	Bolt fastening while controlling the number of impacts.
99	Pull the trigger to start the tool; release it to stop. Bolt fastening without controlling the number of impacts; or when fastening with more than 200 impacts (over 4 sec.)
00	No rotation even with trigger pulled.	Pull the trigger to start the tool; release it to stop.	-

Temporary bolt fastening and loosening

By using the B or C on the left dial in combination with one of the digits (from 0 to 9) on the right-hand dial, you can do temporary bolt fastening or bolt loosening.

Dial setting Clockwise Counterclockwise Application
B [*]Select dial 0 - 9 for B [*]	After catching the first impact, tool stops [*] x0.1 seconds later.	Pull the trigger to start the tool; release it to stop.	For temporary bolt fastening.
C [*]Select dial 0 - 9 for C [*]	Pull the trigger to start the tool; release it to stop.	After stopping to impact, tool stops [*] x0.1 seconds later.	To loosen bolts.

Operation (Fig. 8 &9)

[^*1] Presetting number of impacts is impossible for more than 200 impacts (4 seconds).
[2] Fastening time includes when you pull the trigger completely.

CAUTION:

• Hold the tool firmly and place the socket over the bolt or nut. Turn the tool on and fasten for the proper fastening time and number of impacts (dial setting).
• Always insert the battery cartridge all the way until it locks in place. If you can see the red part on the upper side of the button, it is not locked completely. Insert it fully until the red part cannot be seen. If not, it may accidentally fall out of the tool, causing injury to you or someone around you.
• If the tool is operated continuously until the battery cartridge has discharged, allow the tool to rest for 15 minutes before proceeding with a fresh battery.

The proper fastening torque may differ depending upon the kind or size of the bolt. the material of the workpiece to be fastened, etc. The relation between fastening torque, fastening time and number of the impacts (dial setting) is shown in the figures.

NOTE:

• Hold the tool pointed straight at the bolt or nut without applying excessive pressure on the tool.

• When fastening screw M8 or smaller, carefully adjust pressure on the switch trigger so that the screw is not damaged.

• Excessive fastening torque may damage the bolt or nut. Before starting your job, always perform a test operation to verify the adequate fastening speed, time and number of impacts (dial setting) for your bolt or nut. Especially for the bolt other than M8, perform the above test operation to prevent the trouble on socket or bolt, etc.

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. Socket

• Failure to use the correct size socket will cause a reduction in the fastening torque.
• A worn socket (wear on the hex end or square end) 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 the 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.

• The use of the universal joint or the extension bar somewhat reduces the fastening force of the impact wrench. Compensate by fastening for a longer period of time.

• Type of materials to be fastened, the manner of holding the tool and the tool speed will affect the torque.

MAINTENANCE

CAUTION:

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

Replacement of carbon brushes (Fig. 10 & 11)

Replace carbon brushes when they are worn down to the limit mark. Both identical carbon brushes should be replaced at the same time.

To maintain product safety and reliability, repairs, maintenance or adjustment should be carried out by a Makita Authorized Service Center.

Descriptif

Boulon standard .8mm-14mm

Bullone standard .8mm-14 mm

Nominate spanning D.C. 12 V

Reversbryter (Fig. 6)

NB!

• Sjekk alltid rotasjonsretningen for maskinen startes.
• Reverseringshendelen mä bare brukes uttered at maskinen har stoppet welt. Hvis rotasjonsretningen endres För motoren har stoppet welt, kan det före til skader pa maskinen.
• Nár maskinen ikke er i drift på revershendelen alltid settes i nøytral stilling.

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Mia apuevn unofoxn (pOpa oTnv Eay. akpn n otn TeTpaywyn akpn) 0 npokaaleoi μeioon ot npn oTepewonc.

3. MtnouA0eI

Akounkai evo ouvtaleotnc pornc kal n katnyopia tou mouloviou eiva ta iia, n katalnn potn otepewonc 0a diaepesu omuwva uT biapetpo Tou mouloviou.
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1. H xpnouponoin n ts yevikc xpionc ap0pwons n tnc mnapac enktaonc mewvei kata kati tn ouvaun otepeowonc tou kleeolou kpoounc. AvannpoTE oTepewovtac yia paKpUePn xpvikn diapkeia.
2. O twnoc twv ulikov npoc stepewon, o tponoc kpatnmuatoC tou mXavnmuatoC kal n taXUTnTa tou mXavnmuatoC empeacov tn porn.

ΣYNTHPH∑H

PPOEOXH:

Piv Tnv EKTeAeon Epyaiovv Me Tn OoKEun
biaeBaiwveote navto, yia to otI N OoKEUn
ObnTnke ME anopakpuoevo To ouoopeutn.

AvtikataoTaon kapbouvákia (Eik.10 kal 11)

Ta Kapbouváka πeπει va avtikaθiσaVTai, otav exouv φθapei μexpi to Μηεio mapkapiμaTOc. Ta duo tautoŋma Kapbouváka πeπει va avtikaθiσaVTai tautoxpova.

Tia Tn diaophiion Tnc oiyoupiac kai aEioniotiac twv npoiovtwv mac npenei oi ENIOKeuec, epyaoies ouvtnponc n puthetaic va ekteauvtai ano eoouiootmeva epyaotnpia eepic neatow MakiTa.

GB 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. The accessories or attachments should be used only in the proper and intended manner.

F ACCESSORIES

ATTENTION:

EC-DECLARATION OF CONFORMITY

The undersigned, Yasuhiko Kanzaki, authorized by Makita Corporation, 3-11-8 Sumiyoshi-Cho, Anjo, Aichi 446-8502 Japan declares that this product

(Serial No.: series production)

manufactured by Makita Corporation in Japan is in compliance with the following standards or standardized duments,

EN50260. EN55014.

in accordance with Council Directives, 89/336/EEC and 98/37/EC.

FRANÇAISE

DECLARATION DE CONFORMITE CE

Michigan Drive, Tongwell, Milton Keynes,

Bucks MK15 8JD, ENGLAND

PORTUGUES

DECLARACAO DE CONFORMIDADE DA CE

de accordo com as directivas 89/336/CEE e 98/37/CE do Conselho.

DANSK

EU-DEKLARATION OM KONFORMITET

Undertegnede, Yasuhiko Kanzaki, med fuldmagt fra Makita Corporation, 3-11-8 Sumiyoshi-Cho, Anjo, Aichi 446-8502 Japan, erklær hermed, at dette produkt

(AuEwv Ap: npaywyn oεipac)

kataokeuuaevo ano Tnv Etaipelia Makita otnv Iaewia, pioeketai oouphiwvia u ta akoloutheta npotuna n tunonoinueva eyypaa,

EN50260, EN55014

Michigan Drive, Tongwell, Milton Keynes,

Bucks MK15 8JD, ENGLAND

ENGLISH

EC-DECLARATION OF CONFORMITY

The undersigned, Yasuhiko Kanzaki, authorized by Kao Lung Tamura Electronics Co., Ltd. No. 4 Industry 1st Street, Ping Tung Industry District Chiao Nan Li, Ping Tung City, Taiwan declares that this battery charger

(Serial No.: series production)

manufactured by Kao Lung Tamura Electronics Co., Ltd. in Taiwan is in compliance with the following standards or standardized documents,

in accordance with Council Directives, 73/23/EEC and 89/336/EEC.

FRANÇAISE

DECLARATION DE CONFORMITE CE

Michigan Drive, Tongwell, Milton Keynes, Bucks MK15 8JD, ENGLAND

PORTUGUES

DECLARACAO DE CONFORMIDADE DA CE

de accordo com as directivas 73/23/CEE e 89/336/CEE do Conselho.

DANSK

EU-DEKLARATION OM KONFORMITET

Undertegnede, Yasuhiko Kanzaki, med fuldmagt fra Kao Lung Tamura Electronics Co., Ltd. No. 4 Industry 1st Street, Ping Tung Industry District Chiao Nan Li, Ping Tung City, Taiwan, erklærhermed, at dette batteriopladenen

Undertegnede, Yasuhiko Kanzaki, med fullmakt fra Kao Lung Tamura Electronics Co., Ltd. No. 4 Industry 1st Street, Ping Tung Industry District Chiao Nan Li, Ping Tung City, Taiwan bekrefter herved at dette batterilader

O unoypaaw, Yasuhiko Kanzaki, eouoiobotnuevoa nToTnv eTaipia Kao Lung Tamura Electronics Co., Ltd. No. 4 Industry 1st Street, Ping Tung Industry District Chiao Nan Li, Ping Tung City, Taiwan, oto auto to optio ts maataiac

(AUeWAp: npaywyn oεlpac)

kataokvuaouevo ano tvn Etaipia Kao Lung Tamura Electronics Co., Ltd. otnv Taiwan, piketai o6 ouuvi a e Ta akoloua npotuna n tuonoinueva eyypaa,

Michigan Drive, Tongwell, Milton Keynes,

Bucks MK15 8JD, ENGLAND

ENGLISH

Noise and Vibration of Model BTW121

The typical A-weighted noise levels are

sound pressure level: 94 dB (A)

sound power level: 107 dB (A)

• Wear ear protection. -

The typical weighted root mean square acceleration value is 7m / s^2

FRANÇAISE

aänenpainetaso: 94 dB (A)

aenthenotatoso:107dB(A)