OPERATOR'S MANUAL
MANUEL de L'UTILISATEUR
MANUAL del OPERADOR
Cat. No. / No de cat.
2766-20, 2767-20
M18 FUEL™ HIGH TORQUE IMPACT WRENCH
CLÉ À CHOCS DE COUPLE ÉLEVÉ DE M18 FUEL
™
LLAVE DE IMPACTO DE ALTO ESFUERZO DE TORSIÓN M18 FUEL
WARNING To reduce the risk of injury, user must read and understand operator's manual.
AVERTISSEMENT An de réduire le risque de blessures, l'utilisateur doit lire et bien
comprendre le manuel.
ADVERTENCIA Para reducir el riesgo de lesiones, el usuario debe leer y entender el manual.
™
GENERAL POWER TOOL
WARNING
SAFETY WARNINGS
Read all safety warnings, instruc-
tions provided with this power tool. Failure to
follow all instructions listed below may result in
electric shock, re 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-oper-
ated (cordless) power tool.
tions, illustrations and specica-
WORK AREA SAFETY
• Keep work area clean and well lit. Cluttered or dark
areas invite accidents.
• Do not operate power tools in explosive atmo-
spheres, such as in the presence of ammable
liquids, gases or dust. Power tools create sparks
which may ignite the dust or fumes.
• Keep children and bystanders away while operat-
ing a power tool. Distractions can cause you to lose
control.
ELECTRICAL SAFETY
• 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. Unmodied plugs and matching outlets will
reduce risk of electric shock.
• 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.
• Do not expose power tools to rain or wet conditions. Water entering a power tool will increase the
risk of electric shock.
• 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.
• 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.
• 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
• 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 inuence of drugs, alcohol or medication. A
moment of inattention while operating power tools
may result in serious personal injury.
• Use personal protective equipment. Always wear
eye protection. Protective equipment such as a dust
mask, non-skid safety shoes, hard hat or hearing
protection used for appropriate conditions will reduce
personal injuries.
• Prevent unintentional starting. Ensure the switch
is in the o-position before connecting to power
source and/or battery pack, picking up or carrying
the tool. Carrying power tools with your nger on the
switch or energizing power tools that have the switch
on invites accidents.
• 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.
• Do not overreach. Keep proper footing and bal-
ance at all times. This enables better control of the
power tool in unexpected situations.
• Dress properly. Do not wear loose clothing or
jewelry. Keep your hair and clothing away from
moving parts. Loose clothes, jewelry or long hair
can be caught in moving parts.
• 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.
• Do not let familiarity gained from frequent use
of tools allow you to become complacent and
ignore tool safety principles. A careless action
can cause severe injury within a fraction of a second.
POWER TOOL USE AND CARE
• 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.
• Do not use the power tool if the switch does not turn
it on and o. Any power tool that cannot be controlled
with the switch is dangerous and must be repaired.
• Disconnect the plug from the power source and/
or remove the battery pack, if detachable, 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.
• 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.
• Maintain power tools and accessories. Check for
misalignment or binding of moving parts, breakage of parts and any other condition that may
aect the power tool’s operation. If damaged,
have the power tool repaired before use. Many ac-
cidents are caused by poorly maintained power tools.
• Keep cutting tools sharp and clean. Properly
maintained cutting tools with sharp cutting edges are
less likely to bind and are easier to control.
• 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
dierent from those intended could result in a hazardous situation.
• Keep handles and grasping surfaces dry, clean
and free from oil and grease. Slippery handles
and grasping surfaces do not allow for safe handling
and control of the tool in unexpected situations.
BATTERY TOOL USE AND CARE
• Recharge only with the charger specied by the
manufacturer. A charger that is suitable for one type
of battery pack may create a risk of re when used
with another battery pack.
• Use power tools only with specically designated
battery packs. Use of any other battery packs may
create a risk of injury and re.
• When battery pack is not in use, keep it away
from other metal objects, like paper clips, coins,
2
keys, nails, screws or other small metal objects,
WARNING
C
US
that can make a connection from one terminal to
another. Shorting the battery terminals together may
cause burns or a re.
• Under abusive conditions, liquid may be ejected
from the battery; avoid contact. If contact accidentally occurs, ush with water. If liquid con-
tacts eyes, additionally seek medical help. Liquid
ejected from the battery may cause irritation or burns.
• Do not use a battery pack or tool that is damaged or modied. Damaged or modied batteries
may exhibit unpredictable behavior resulting in re,
explosion or risk of injury.
• Do not expose a battery pack or tool to re or
excessive temperature. Exposure to re or tem-
perature above 265°F (130°C) may cause explosion.
• Follow all charging instructions and do not
charge the battery pack or tool outside the
temperature range specied in the instructions.
Charging improperly or at temperatures outside the
specied range may damage the battery and increase
the risk of re.
SERVICE
• Have your power tool serviced by a qualied
repair person using only identical replacement
parts. This will ensure that the safety of the power
tool is maintained.
• Never service damaged battery packs. Service
of battery packs should only be performed by the
manufacturer or authorized service providers.
SPECIFIC SAFETY RULES FOR
IMPACT WRENCHES
• 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. Expo-
sure to noise can cause hearing loss.
• Use only sockets and other accessories specically designed for use on impact wrenches and
drivers. Other sockets and accessories might shatter
or break causing injury.
• Always use common sense and be cautious when
using tools. It is not possible to anticipate every
situation that could result in a dangerous outcome.
Do not use this tool if you do not understand these
operating instructions or you feel the work is beyond
your capability; contact Milwaukee Tool or a trained
professional for additional information or training.
• Maintain labels and nameplates. These carry im-
portant information. If unreadable or missing, contact
a MILWAUKEE service facility for a free replacement.
•
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
Some dust created by power sanding,
sawing, grinding, drilling, and other
• arsenic and chromium from chemically-treated lumber.
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
lter out microscopic particles.
SYMBOLOGY
Volts
Direct Current
Canada and U.S.
No Load Revolutions per Minute (RPM)
Impacts per Minute Under Load (IPM)
UL Listing for
SPECIFICATIONS
Volts .............................................................. 18 DC
Battery Type .................................................M18™
Charger Type ................................................M18™
Recommended Ambient
Operating Temperature ......................0°F to 125°F
Cat. No. ..................................................... 2766-20
Anvil Type ...................................... 1/2" Square-Pin
RPM ............................................................. 0-1800
IPM .............................................................. 0-2400
Cat. No. ..................................................... 2767-20
Anvil Type .................................... 1/2" Square-Ring
RPM ............................................................. 0-1750
IPM .............................................................. 0-2100
FUNCTIONAL DESCRIPTION
1
2
3
5
1. 1/2" Square drive anvil with pin detent (2766-20)
2. Control switch
3. Trigger
4. 4-Mode drive control
5. LED
6. Handle
7. 1/2" Square drive anvil with friction ring (2767-20)
4
7
6
3
ASSEMBLY
WARNING
WARNING
WARNING
WARNING
Recharge only with the charger
cic charging instructions, read the operator’s
manual supplied with your charger and 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.
may be hazardous.
Use only sockets and other accessories speci-
cally designed for use on impact wrenches and
drivers. Other sockets and accessories might
shatter or break causing injury.
specied for the battery. For spe-
Removing/Inserting the Battery
Always remove battery pack before
changing or removing accessories.
Only use accessories specically
recommended for this tool. Others
Attaching and Removing Accessories
1/2" Impact Wrench with Pin Detent
1. Use only the appropriate size Square Drive Sockets.
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 o the anvil.
1/2" Impact Wrench with Friction Ring
1. Use only the appropriate size Square Drive Sockets.
2. To attach a socket, align the accessory with the
anvil and push it rmly over the retaining ring.
3. To remove the accessory, pull the accessory o
the anvil.
(Cat. No. 2766-20)
(Cat. No. 2767-20)
OPERATION
Always remove battery pack before
ries. Only use accessories specically recommended for this tool. Others may be hazardous.
To reduce the risk of injury, always wear proper
eye protection marked to comply with ANSI Z87.1.
The drive control button is used to adjust the torque,
rotation speed (RPM), and impact speed (IPM) for
the application.
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 4 modes. When the
desired mode indicator is
lit, begin work.
changing or removing accesso-
Using the Drive Control
Drive Control Button
Mode Indicator
Cat. No. 2766-20 Cat. No. 2767-20
Mode RPM IPM Mode RPM IPM
1 0-950 0-1150 1 0-550 0-950
2 0-1500 0-2100 2 0-1400 0-1750
3 0-1800 0-2400 3 0-1750 0-2100
0-1800* 0-2400* 0-1750* 0-2100*
In mode, when run in reverse, the tool will spin
at the above RPM and IPM until the nut breaks free
from the joint. Then, the tool slows to 750 RPM for
better control in removing the nut.
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
2. For reverse (counterclockwise) rotation, push the
3. To lock the trigger, push the control switch to the
Always remove the battery pack before performing
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 pulled.
2. To vary the driving speed, increase or decrease
3. To stop the tool, release the trigger.
Using the Control Switch
Push for
Forward
PUSH TO CENTER TO LOCK
switch in the direction shown. Check the direction
of rotation before use.
control switch in the direction shown. Check the
direction of rotation before use.
center position. The trigger will not work when the
control switch is in the locked position.
maintenance or changing accessories. Always
lock the trigger or remove the battery pack before
storing the tool and any time the tool is not in use.
pressure on the trigger. The further the trigger is
pulled, the greater the speed.
Push for
Reverse
4
The longer a bolt, screw, or nut is impacted, the
WARNING
WARNING
WARNING
tighter it will become. To help prevent damaging the
fasteners or workpieces, avoid excessive impact-
ing. 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 aects 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
Impacting Techniques
for nal tightening.
MAINTENANCE
To reduce the risk of injury, always
battery pack from the charger or tool before
performing any maintenance. Never disassemble
the tool, battery pack or charger. Contact a
MILWAUKEE service facility for ALL repairs.
Keep your tool, battery pack and charger in good
repair by adopting a regular maintenance program.
Inspect your tool for issues such as undue noise,
misalignment or binding of moving parts, breakage of
parts, or any other condition that may aect the tool
operation. Return the tool, battery pack, and charger
to a MILWAUKEE service facility for repair. After six
months to one year, depending on use, return the
tool, battery pack and charger to a MILWAUKEE
service facility for inspection.
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 a
MILWAUKEE service facility for repairs.
your tool, battery pack or charger in liquid or
allow a liquid to ow inside them.
Clean dust and debris from vents. Keep handles
clean, dry and free of oil or grease. Use only mild
soap and a damp cloth to clean, 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 deter-
gents containing ammonia. Never use ammable or
combustible solvents around tools.
For repairs, return the tool, battery pack and charger
to the nearest authorized service center.
unplug the charger and remove the
Maintaining Tool
To reduce the risk of personal injury and damage, never immerse
Cleaning
Repairs
ACCESSORIES
Use only recommended accesso-
For a complete listing of accessories, go online to
www.milwaukeetool.com or contact a distributor.
ries. Others may be hazardous.
SERVICE - UNITED STATES
1-800-SAWDUST (1.800.729.3878)
Monday-Friday, 7:00 AM - 6:30 PM CST
or visit www.milwaukeetool.com
Contact Corporate After Sales Service Technical
Support with technical, service/repair, or warranty
questions.
Email: metproductsupport@milwaukeetool.com
Become a Heavy Duty Club Member at
www.milwaukeetool.com to receive important
notications regarding your tool purchases.
SERVICE - CANADA
Milwaukee Tool (Canada) Ltd
Monday-Friday, 7:00 AM - 4:30 PM CST
Every MILWAUKEE power tool* (see exceptions below) is warranted
to the original purchaser only to be free from defects in material and
workmanship. Subject to certain exceptions, MILWAUKEE will repair
or replace any part on an electric power tool which, after examination,
is determined by MILWAUKEE to be defective in material or workman-
ship for a period of ve (5) years** after the date of purchase unless
otherwise noted. Return of the power tool to a MILWAUKEE factory
Service Center location or MILWAUKEE Authorized Service Station,
freight prepaid and insured, is required. A copy of the proof of purchase
should be included with the return product. This warranty does not
apply to damage that MILWAUKEE determines to be from repairs
made or attempted by anyone other than MILWAUKEE authorized
personnel, misuse, alterations, abuse, normal wear and tear, lack of
maintenance, or accidents.
Normal Wear: Many power tools need periodic parts replacement and
service to achieve best performance. This warranty does not cover
repair when normal use has exhausted the life of a part including,
but not limited to, chucks, brushes, cords, saw shoes, blade clamps,
o-rings, seals, bumpers, driver blades, pistons, strikers, lifters, and
bumper cover washers.
*This warranty does not cover Air Nailers & Staplers; Airless Paint
Sprayer; Cordless Battery Packs; Gasoline Driven Portable Power
Generators; Hand Tools; Hoist – Electric, Lever & Hand Chain;
M12™ Heated Gear; Reconditioned Product; and Test & Measurement Products. There are separate and distinct warranties available
for these products.
**The warranty period for Job Site Radios, M12™ Power Port, M18™
Power Source, Jobsite Fan and Trade Titan™ Industrial Work Carts
is one (1) year from the date of purchase. The warranty period for the
Drain Cleaning Cables and AIRSNAKE™ Drain Cleaning Air Gun
Accessories is two (2) years from the date of purchase. The warranty
period for the M18™ Compact Heat Gun, 8 Gallon Dust Extractor,
M18™ Framing Nailers, M18 FUEL™ 1/2" Ext. Anvil Controlled Torque
Impact Wrench w/ ONE-KEY™, and the M18 FUEL™ 1" High Torque
Impact Wrench w/ ONE-KEY™ is three (3) years from the date of
purchase. The warranty period for the LED in the LED Work Light and
the LED Upgrade Bulb for the Work Light is the lifetime of the product
subject to the limitations above. If during normal use the LED or LED
Bulb fails, the part will be replaced free of charge.
Warranty Registration is not necessary to obtain the applicable war-
ranty on a MILWAUKEE power tool product. The manufacturing date
of the product will be used to determine the warranty period if no proof
of purchase is provided at the time warranty service is requested.
1.800.268.4015
or visit www.milwaukeetool.ca
LIMITED WARRANTY
USA & CANADA
5
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