Cat. No.
M18 CIW12
M18™ FUEL™ 1/4" HEx IMpaCt DrIvEr & 1/2" IMpaCt wrENCH
To reduce the risk of injury, user must read and understand operator's
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.
attached to a rotating part of the power tool may
work area SAFETY
result in personal injury.
•Keep work area clean and well lit. Cluttered or •Do not overreach. Keep proper footing and
dark areas invite accidents.
balance at all times. This enables better control
•Do not operate power tools in explosive atof the power tool in unexpected situations.
mospheres, such as in the presence of flam- •Dress properly. Do not wear loose clothing or
mable liquids, gases or dust. Power tools create
jewellery. Keep your hair, clothing and gloves
sparks which may ignite the dust or fumes.
away from moving parts. Loose clothes, jewel•Keep children and bystanders away while
lery or long hair can be caught in moving parts.
operating a power tool. Distractions can cause •If devices are provided for the connection of
you to lose control.
dust extraction and collection facilities, ensure
these are connected and properly used. Use of
electrical safety
dust collection can reduce dust-related hazards.
•Power tool plugs must match the outlet. Never
modify the plug in any way. Do not use any
POWER Tool use and care
adapter plugs with earthed (grounded) power
not force the power tool. Use the correct
tools. Unmodified plugs and matching outlets will
power tool for your application. The correct
reduce risk of electric shock.
power tool will do the job better and safer at the
•Avoid body contact with earthed or grounded
rate for which it was designed.
surfaces such as pipes, radiators, ranges and
refrigerators. There is an increased risk of electric •Do not use the power tool if the switch does not
turn it on and off. Any power tool that cannot be
shock if your body is earthed or grounded.
controlled with the switch is dangerous and must
•Do not expose power tools to rain or wet condibe repaired.
tions. Water entering a power tool will increase
•Disconnect the plug from the power source
the risk of electric shock.
and/or the battery pack from the power tool
•Do not abuse the cord. Never use the cord for
before making any adjustments, changing
carrying, pulling or unplugging the power tool.
accessories, or storing power tools. Such
Keep cord away from heat, oil, sharp edges
preventive safety measures reduce the risk of
or moving parts. Damaged or entangled cords
starting the power tool accidentally.
increase the risk of electric shock.
•When operating a power tool outdoors, use an •Store idle power tools out of the reach of children and do not allow persons unfamiliar with
extension cord suitable for outdoor use. Use
the power tool or these instructions to operate
of a cord suitable for outdoor use reduces the risk
the power tool. Power tools are dangerous in the
of electric shock.
hands of untrained users.
•If operating a power tool in a damp location
is unavoidable, use a residual current device •Maintain power tools. Check for misalignment
or binding of moving parts, breakage of parts
(RCD) protected supply. Use of an RCD reduces
and any other condition that may affect the
the risk of electric shock.
power tool’s operation. If damaged, have the
personal safety
power tool repaired before use. Many accidents
are caused by poorly maintained power tools.
•Stay alert, watch what you are doing and use
common sense when operating a power tool. Do •Keep cutting tools sharp and clean. Properly
maintained cutting tools with sharp cutting edges
not use a power tool while you are tired or under
are less likely to bind and are easier to control.
the influence of drugs, alcohol or medication. A
moment of inattention while operating power tools •Use the power tool, accessories and tool bits
etc., in accordance with these instructions,
may result in serious personal injury.
taking into account the working conditions and
•Use personal protective equipment. Always
the work to be performed. Use of the power tool
wear eye protection. Protective equipment such
for operations different from those intended could
as dust mask, non-skid safety shoes, hard hat, or
result in a hazardous situation.
hearing protection used for appropriate conditions
will reduce personal injuries.
Battery Tool use and care
•Prevent unintentional starting. Ensure the
switch is in the off-position before connecting •Recharge only with the charger specified by
the manufacturer. A charger that is suitable for
to power source and/or battery pack, picking
one type of battery pack may create a risk of fire
up or carrying the tool. Carrying power tools with
when used with another battery pack.
your finger on the switch or energising power tools
•Use power tools only with specifically desigthat have the switch on invites accidents.
nated battery packs. Use of any other battery
•Remove any adjusting key or wrench before
packs may create a risk of injury and fire.
turning the power tool on. A wrench or a key left
•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.
•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.
Direct Current
Impacts per Minute Under
Load (IPM)
No Load Revolutions per
Minute (RPM)
•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.
Cat. No. DC Mode Speed Mode Impacts
•Hold 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.
•Wear ear protectors when impact drilling.
Exposure to noise can cause hearing loss.
•Use only sockets and other accessories specifically designed for use on impact wrenches
and drivers. Other sockets and accessories might
shatter or break causing injury.
•Maintain labels and nameplates. These carry
important information. If unreadable or missing,
contact your authorised MILWAUKEE dealer.
•WARNING: Some dust created by power sanding,
sawing, grinding, drilling, and other construction
activities contains chemicals known to cause
cancer, birth defects or other reproductive harm.
Some examples of these chemicals are:
•lead from lead-based paint
•crystalline silica from bricks and cement and other
masonry products, and
•arsenic and chromium from chemically-treated
Your risk from these exposures varies, depending
on how often you do this type of work. To reduce
your exposure to these chemicals: work in a well
ventilated area, and work with approved safety
equipment, such as those dust masks that are specially designed to filter out microscopic particles.
M18 CIW12
Functional Description
1.Hex drive chuck
3.Control switch
5.3-Mode drive control
6.Belt clip
7. 1/2” Square drive anvil
WARNING Recharge only with the
charger specified for the battery. For specific
charging instructions, read the operator’s
manual supplied with your charger and battery.
Inserting/Removing the Battery
To remove the battery, push in the release buttons
and pull the battery pack away from the tool.
To insert the battery, slide the pack into the body of
the tool. Make sure it latches securely into place.
WARNING Always remove battery
pack before changing or removing accessories. Only use accessories specifically
recommended for this tool. Others may be
WARNING Always remove battery
pack before changing or removing accessories. Only use accessories specifically
recommended for this tool. Others may be
Using the Drive Control
The drive control button is used to adjust the torque,
rotation speed (RPM), and impact speed (IPM) for
the application (see Specifications chart for RPM
and IPM).
To select the drive control mode:
1. Pull and release the trigger to turn on the tool.
The current mode indicator is lit.
2. Press the drive control button to cycle through
the 3 modes. When the desired mode indiator
is lit, begin work.
WARNING To reduce the risk of injury,
wear safety goggles or glasses with side
WARNING Use only sockets and other
accessories specifically designed for use on
impact wrenches and drivers. Other sockets
and accessories might shatter or break causing injury.
Attaching and Removing Accessories
1/2" Impact Wrench (M18 CIW12)
1. Use only the appropriate size Square Drive
2. To attach a socket, align the hole in the accessory with the detent pin on the anvil. Hold the
detent pin in while pushing the socket onto the
anvil. The detent pin will snap into place in the
hole to secure the socket.
3. To remove the socket, insert a nail or other thin
object into the hole in the accessory and press
in the detent pin. Pull the accessory off the anvil.
Using the Control Switch
The control switch may be set to three positions:
forward, reverse and lock. Due to a lockout mechanism, the control switch can only be adjusted when
the ON/OFF switch is not pressed. Always allow
the motor to come to a complete stop before using
the control switch.
1.For forward (clockwise) rotation, push the
control switch in the direction shown. Check the
direction of rotation before use.
2.For reverse (counterclockwise) rotation, push
the control switch in the direction shown. Check
the direction of rotation before use.
3.To lock the trigger, push the control switch to the
center position. The trigger will not work when
the control switch is in the locked position.
Always remove the battery pack before performing maintenance, changing accessories, storing
the tool and any time the tool is not in use.
1/4"HexImpactDriver (M18 CID)
This impact driver is intended for use with drill and
driver bits with a hex shank.
1. To attach an accessory, press the shank into the
hex drive chuck.
2. To remove the accessory, pull out the ring and
remove the accessory. Release the ring.
Push for Forward
Push for Reverse
Starting, Stopping and Controlling Speed
These tools may be operated at any speed from
0 to full speed.
1.To start the tool, pull the trigger.
NOTE: An LED is turned on when the trigger is
2.To vary the driving speed, simply increase or
decrease pressure on the trigger. The further
the trigger is pulled, the greater the speed.
3.To stop the tool, release the trigger and the
electric brake stops the tool instantly.
WARNING To reduce the risk of injury,
always unplug the charger and remove the
battery pack from the charger or tool before
performing any maintenance. Never disassemble the tool, battery pack or charger.
Contact your authorised milWaukee
Maintaining Tool
Keep your tool, battery pack and charger in good
repair by adopting a regular maintenance program.
After six months to one year, depending on use,
return the tool, battery pack and charger to
your authorised MILWAUKEE dealer for:
•Mechanical inspection and cleaning (gears, spindles, bearings, housing, etc.)
•Electrical inspection (battery pack, charger,
•Testing to assure proper mechanical and electrical
If the tool does not start or operate at full power
with a fully charged battery pack, clean the contacts
on the battery pack. If the tool still does not work
properly, return the tool, charger and battery pack,
to your authorised MILWAUKEE dealer for repairs.
Impacting Techniques
The longer a bolt, screw, or nut is impacted, the
tighter it will become. To help prevent damaging the
fasteners or workpieces, avoid excessive impacting. Be particularly careful when impacting smaller
fasteners because they require less impacting to
reach optimum torque.
Practice with various fasteners, noting the length
of time required to reach the desired torque. Check
the tightness with a hand-torque wrench. If the
fasteners are too tight, reduce the impacting time.
If they are not tight enough, increase the impacting time.
Oil, dirt, rust or other matter on the threads or
under the head of the fastener affects the degree
of tightness.
The torque required to loosen a fastener averages
75% to 80% of the tightening torque, depending on
the condition of the contacting surfaces.
On light gasket jobs, run each fastener down to a
relatively light torque and use a hand torque wrench
for final tightening.
WARNING To reduce the risk of personal injury and damage, never immerse your
tool, battery pack or charger in liquid or allow
a liquid to flow inside them.
Clean dust and debris from charger and tool vents.
Keep tool handles clean, dry and free of oil or
grease. Use only mild soap and a damp cloth to
clean the tool, battery pack and charger since certain
cleaning agents and solvents are harmful to plastics
and other insulated parts. Some of these include
gasoline, turpentine, lacquer thinner, paint thinner,
chlorinated cleaning solvents, ammonia and household detergents containing ammonia. Never use
flammable or combustible solvents around tools.
For repairs, return the tool, battery pack and
charger to your authorised MILWAUKEE dealer.
Warning Alwaysremovebatterypack
before changing or removing accessories.
Onlyuseaccessoriesspecificallyrecommended for this tool. Others may be hazardous.
For a complete listing of accessories refer to your
MILWAUKEE Electric Tool catalog or go online
to www. milwaukeetools.com.au.
Please refer to AUSTRALIAN and NEW ZEALAND warranty supplied with tool.
This warranty applies only to product sold in Australia and New Zealand.
MILWAUKEE prides itself in producing a premium quality product that is Nothing But Heavy Duty®.
Your satisfaction with our products is very important to us! If you encounter any problems with the
operation of this tool, please contact your authorised MILWAUKEE dealer.
13135 West Lisbon Road • Brookfield, Wisconsin, U.S.A. 53005
Techtronic Industries (Australia) Pty. Ltd.
Doncaster, Victoria, Australia, 3108
Techtronic Industries (New Zealand) Pty. Ltd.
Auckland, New Zealand, 1060
Professionally made in China for Milwaukee Electric Tool CoƌƉ͘
Printed in China