Makita TW0350 User Manual

INSTRUCTION MANUAL
MANUEL D'INSTRUCTION
MANUAL DE INSTRUCCIONES

Impact Wrench
Boulonneuse à chocs
Llave de Impacto

TW0350

IMPORTANT: Read Before Using.
IMPORTANT: Lire avant usage.
IMPORTANTE: Leer antes de usar.

004004

DOUBLE INSULATION
DOUBLE ISOLATION
DOBLE AISLAMIENTO

1

ENGLISH (Original instructions)

SPECIFICATIONS

Model TW0350

Capacities

Square drive 12.7 mm (1/2")

No load speed (RPM) 2,000

Impacts per minute 2,000

Max. fastening torque 350 N.m (258 ft.lbs)

Overall length 283 mm (11-1/8")

Net weight 3.0 kg (6.6 lbs)

• Due to our continuing programme of research and development, the specifications herein are subject to change without notice.

• Specifications may differ from country to country.

• Weight according to EPTA-Procedure 01/2003.

General Power Tool Safety
Warnings

WARNING 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 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

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.

Electrical Safety

4. 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.

5. 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.

6. Do not expose power tools to rain or wet
conditions. Water entering a power tool will
increase the risk of electric shock.

Standard bolt M12 - M22 (1/2"-7/8" )

High tensile bolt M12 - M16 (1/2"-5/8" )

GEA008-1

7. 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.

8. 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.

9. 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.

Personal Safety

10. 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.

11. 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.

12. 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.

13. 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.

2

14. Do not overreach. Keep proper footing and
balance at all times. This enables better control
of the power tool in unexpected situations.

15. Dress properly. Do not wear loose clothing or

jewellery. Keep your hair, clothing, and gloves
away from moving parts. Loose clothes,

jewellery or long hair can be caught in moving
parts.

16. 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.

Power tool use and care

17. 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.

18. 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.

19. 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.

20. 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.

21. 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.

22. Keep cutting tools sharp and clean. Properly

maintained cutting tools with sharp cutting edges
are less likely to bind and are easier to control.

23. 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.

Service

24. 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.

25. Follow instruction for lubricating and

changing accessories.

26. Keep handles dry, clean and free from oil and
grease.

USE PROPER EXTENSION CORD. Make sure your
extension cord is in good condition. When using an
extension cord, be sure to use one heavy enough to
carry the current your product will draw. An undersized
cord will cause a drop in line voltage resulting in loss of
power and overheating. Table 1 shows the correct size to
use depending on cord length and nameplate ampere
rating. If in doubt, use the next heavier gage. The smaller
the gage number, the heavier the cord.

Table 1: Minimum gage for cord

Ampere Rating

Volts Total length of cord in feet

120 V 25 ft. 50 ft. 100 ft. 150 ft.

More Than Not More Than AWG

0 6 18 16 16 14

18 16 14 12610

10 12 16 16 14 12

000173

IMPACT WRENCH SAFETY
WARNINGS

1. Hold power tool by insulated gripping

12 16 14 12

GEB009-5

surfaces, when performing an operation
where the fastener may contact hidden wiring
or its own cord. Fastening contacting a "live" wire

may make exposed metal parts of the power tool

"live" and could give the operator an electric
shock.

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
high locations.

3

Not Recommended

6. The proper fastening torque may differ
depending upon the kind or size of the bolt.
Check the torque with a torque wrench.

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.

USD202-2

Symbols

The followings show the symbols used for tool.

･ volts

･ amperes

･ hertz

･ alternating current

･ no load speed

･ Class II Construction

･ revolutions or reciprocation per minute

･ number of blow

FUNCTIONAL DESCRIPTION

CAUTION:

• Always be sure that the tool is switched off and

unplugged before adjusting or checking function on
the tool.

Switch action

1. Switch trigger

1

004006

CAUTION:

• Before plugging in the tool, always check to see

that the switch trigger actuates properly and returns
to the "OFF" position when released.

• Change the direction of rotation only when the tool

comes to a complete stop. Changing it before the

tool stops may damage the tool.
The switch is reversible, providing either clockwise or
counterclockwise rotation. To start the tool, simply pull
the lower part of the switch trigger for clockwise or the
upper part for counterclockwise. Release the switch
trigger to stop.

ASSEMBLY

CAUTION:

• Always be sure that the tool is switched off and

unplugged before carrying out any work on the tool.

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

For tool with light fit detent pin

3
4

1. Socket

2. Anvil

3. Hole

4. Detent pin

1

2

4

2

007323

4

Align the hole in the side of the socket with the detent pin
on the anvil and push it onto the anvil of the tool until it
locks into place. Tap it lightly if required.
To remove the socket, simply pull it off.

For tool with firm fit detent pin

1. Socket

2. Anvil

3. Hole

3

4. Detent pin

4

4

007324

1

2

2

To install the socket, align the hole in the side of the
socket with the detent pin on the anvil.
Push the socket onto the anvil until it snaps into place.
Tap it lightly if required.
To remove the socket, depress the detent pin through the
hole in the socket and pull the socket off the anvil.

OPERATION

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.

Standard bolt

300

250

.

200

150

100

50

Fastening torque (N m)

0

Fastening time (S)

004009

0.5 1

(3/4"X3-1/8")

M16X80

(5/8"X3-1/8")

M12X80

(1/2"X3-1/8")

1.522.5

M20X80

3

High tensile bolt

300

250

.

M16(F10T)

(5/8")

200

150

100

50

Fastening torque (N m)

0

1234

Fastening time (S)

004010

M12X80
(1/2"X3-1/8")

M16

(5/8")

M12

(1/2")

5

6

Hold the tool firmly and place the socket over the bolt or
nut. Turn the tool on and fasten for the proper fastening
time.

NOTE:

• When fastening screw M12 (1/2") or smaller,

carefully adjust pressure on the switch so that the

screw is not damaged.

• Hold the tool pointed straight at the bolt or nut

without applying excessive pressure on the tool.

• If you fasten the bolt for a time longer than shown in

the figures, the bolt or the socket may be

overstressed, damaged, etc. Before starting your

job, always perform a test operation to determine

the proper fastening time for your bolt. Especially

for the bolt over than M12 (1/2"), 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. Voltage
Voltage drop will cause a reduction in the fastening
torque.

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
bolt.

• Even though the diameters of bolts are the

same, the proper fastening torque will differ

5

according to the torque coefficient, the class of
bolt and the bolt length.

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 period of time.

5. The manner of holding the tool or the material of
driving position to be fastened will affect the
torque.

MAINTENANCE

CAUTION:

• Always be sure that the tool is switched off and

unplugged before attempting to perform inspection
or maintenance.

• Never use gasoline, benzine, thinner, alcohol or the

like. Discoloration, deformation or cracks may
result.

Replacing carbon brushes

1. Limit mark

1

001145

Remove and check the carbon brushes regularly.
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.
Use a screwdriver to remove the brush holder caps. Take
out the worn carbon brushes, insert the new ones and
secure the brush holder caps.

2

004011

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.

1. Brush holder

1

cap

2. Screwdriver

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.

• Sockets

• Extension bar

• Universal joint

MAKITA LIMITED ONE YEAR WARRANTY

Warranty Policy

Every Makita tool is thoroughly inspected and tested
before leaving the factory. It 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 our
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.

EN0006-1

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