BTW250 - Drill MAKITA - Free user manual and instructions

USER MANUAL BTW250 MAKITA

GB Cordless Impact Wrench Instruction Manual

ENGLISH Explanation of general view

• Due to our continuing program of research and devel-

opment, the specifications herein are subject to change

• Note: Specifications may differ from country to country.

The tool is intended for fastening bolts and nuts.

For your own safety, please refer to the enclosed safety

SPECIFIC SAFETY RULES GEB009-2 DO NOT let comfort or familiarity with product

(gained from repeated use) replace strict adherence

to impact wrench safety rules. If you use this tool

unsafely or incorrectly, you can suffer serious per-

1. Hold tool by insulated gripping surfaces when

performing an operation where the cutting tool

may contact hidden wiring or its own cord. Con-

tact with a “live” wire will make exposed metal parts

of the tool “live” and shock the operator.

2. Wear ear protectors.

3. Check the socket carefully for wear, cracks or

damage before installation.

4. Hold the tool firmly.

5. Always be sure you have a firm footing.

Be sure no one is below when using the tool in

6. The proper fastening torque may differ depend-

ing upon the kind or size of the bolt. Check the

torque with a torque wrench.

SAVE THESE INSTRUCTIONS.

MISUSE or failure to follow the safety rules stated in

this instruction manual may cause serious personal

IMPORTANT SAFETY INSTRUCTIONS FOR BATTERY CARTRIDGE ENC007-2 1. Before using battery cartridge, read all instruc-

tions and cautionary markings on (1) battery

charger, (2) battery, and (3) product using bat-

2. Do not disassemble 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 your eyesight.

5. Do not short the battery cartridge:

(1) Do not touch the terminals with any conduc-

(2) Avoid storing battery cartridge in a container

with other metal objects such as nails, coins,

(3) Do not expose battery cartridge to water or

A battery short can cause a large current flow,

overheating, possible burns and even a break-

6. Do not store the tool and battery cartridge in

locations where the temperature may reach or

exceed 50°C (122°F).

Square drive 12.7 mm 12.7 mm

Net weight 1.6 kg 1.7 kg

Rated voltage D.C. 14.4 V D.C. 18 V6

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 battery.

SAVE THESE INSTRUCTIONS.

Tips for maintaining maximum battery life

1. Charge the battery cartridge before completely

Always stop tool operation and charge the bat-

tery 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 tempera-

ture at 10°C – 40°C (50°F – 104°F). Let a hot bat-

tery cartridge cool down before charging it.

FUNCTIONAL DESCRIPTION CAUTION:

• Always be sure that the tool is switched off and the bat-

tery cartridge is removed before adjusting or checking

function on the tool.

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 push button on the front of the car-

• 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

Switch action (Fig. 2)

• 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

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.

Lighting up the front lamp (Fig. 3)

• Do not look in the light or see the source of light

Pull the switch trigger to light up the lamp. The lamp

keeps on lighting while the switch trigger is being pulled.

The light automatically goes out 10 – 15 seconds after

the switch trigger is released.

• Use a dry cloth to wipe the dirt off the lens of lamp. Be

careful not to scratch the lens of lamp, or it may lower

Reversing switch action (Fig. 4)

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 counter-

When the 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.

• Always be sure that the tool is switched off and the bat-

tery cartridge is removed before carrying out any work

Selecting correct socket

Always use the correct size socket for bolts and nuts. An

incorrect size socket will result in inaccurate and incon-

sistent fastening torque and/or damage to the bolt or nut.

Installing or removing socket

1. For socket without O-ring and pin (Fig. 5)

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 (Fig. 6)

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.

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 hous-

ing on either side and then secure it with a screw. To

remove, loosen the screw and then take it out.

• 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

Hold the tool firmly and place the socket over the bolt or

nut. Turn the tool on and fasten for the proper fastening

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 and fastening time is shown in the figures. (Fig. 9

• Hold the tool pointed straight at the bolt or nut.

• Excessive fastening torque may damage the bolt/nut or

socket. Before starting your job, always perform a test

operation to determine the proper fastening time for

• If the tool is operated continuously until the battery car-

tridge has discharged, allow the tool to rest for 15 min-

utes before proceeding with a fresh battery cartridge.

The fastening torque is affected by a wide variety of fac-

tors 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.

• 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.

• 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

4. 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

5. The manner of holding the tool or the material of

driving position to be fastened will affect the torque.

6. Operating the tool at low speed will cause a reduc-

tion in the fastening torque.

MAINTENANCE CAUTION:

• Always be sure that the tool is switched off and the bat-

tery cartridge is removed before attempting to perform

inspection or maintenance.

Replacing carbon brushes

Replace when they wear down to the limit mark. Keep

the carbon brushes clean and free to slip in the holders.

Both carbon brushes should be replaced at the same

time. Use only identical carbon brushes. (Fig. 11)

Use a screwdriver to remove two screws then remove the

rear cover. (Fig. 12)

Raise the arm part of the spring and then place it in the

recessed part of the housing with a slotted bit screw-

driver of slender shaft or the like. (Fig. 13)

Use pliers to remove the carbon brush caps of the car-

bon brushes. Take out the worn carbon brushes, insert

the new ones and replace the carbon brush caps in

reverse. (Fig. 14 & 15)

Make sure that the carbon brush cap have fit into the

holes in brush holders securely.

Reinstall the rear cover and tighten two screws securely.

To maintain product SAFETY and RELIABILITY, repairs,

any other maintenance or adjustment should be per-

formed by Makita Authorized Service Centers, always

using Makita replacement parts.

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.

• Various type of Makita genuine batteries and chargers8

Para manter a SEGURANÇA e FIABILIDADE, as repara-

φορτιστών Μάκιτα43 ENH102-5

EC-DECLARATION OF CONFORMITY We declare under our sole responsibility that this product

is in compliance with the following standards of standard-

in accordance with Council Directives, 89/336/EEC and

Michigan Drive, Tongwell, Milton Keynes,

de acordo com as directivas 89/336/CEE e 98/37/CE do

Michigan Drive, Tongwell, Milton Keynes,

For European countries only

Noise and Vibration of Model BTW250

The typical A-weighted noise levels are

sound pressure level: 93 dB (A)

sound power level: 104 dB (A)

Uncertainty is 3 dB (A).

– Wear ear protection. –

The typical weighted root mean square acceleration

These values have been obtained according to

For European countries only

Noise and Vibration of Model BTW251

The typical A-weighted noise levels are

sound pressure level: 94 dB (A)

sound power level: 105 dB (A)

Uncertainty is 3 dB (A).

– Wear ear protection. –

The typical weighted root mean square acceleration

These values have been obtained according to