Milwaukee 6141-30, 6141-31, 6142-30, 6142-31 OPERATOR'S MANUAL
OPERATOR'S MANUAL
MANUEL de L'UTILISATEUR
MANUAL del OPERADOR
Cat. No. / No de cat.
6141-30, 6141-31, 6142-30, 6142-31
4-1/2" GRINDERS
RECTIFIEUSES 115 mm (4-1/2")
ESMERILADORAS DE 115 mm (4-1/2")
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 ARE 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 operating 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. Un-
modied 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 ex-
tension 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 balance 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 col-
lection 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.
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.
SPECIFIC SAFETY RULES FOR
SANDER/GRINDER
Safety Warnings Common for Grinding, Sanding,
Wire Brushing or Abrasive Cutting-O Operations:
• This power tool is intended to function as a
grinder, sander, wire brush or cut-o tool. Read
all safety warnings, instructions, illustrations
and specications provided with this power tool.
Failure to follow all instructions listed below may result
in electric shock, re and/or serious injury.
2
• Operations such as polishing are not recom-
mended to be performed with this power tool.
Operations for which the power tool was not designed
may create a hazard and cause personal injury.
• Do not use accessories which are not specically
designed and recommended by the tool manufacturer. Just because the accessory can be attached to
your power tool, it does not assure safe operation.
• The rated speed of the accessory must be at least
equal to the maximum speed marked on the power
tool. Accessories running faster than their rated
speed can break and y apart.
• The outside diameter and the thickness of your
accessory must be within the capacity rating of
your power tool. Incorrectly sized accessories can
not be adequately guarded or controlled.
• Threaded mounting of accessories must match
the grinder spindle thread. For accessories
mounted by anges, the arbour hole of the accessory must fit the locating diameter of the
ange. Accessories that do not match the mounting
hardware of the power tool will run out of balance,
vibrate excessively and may cause loss of control.
• Do not use a damaged accessory. Before each use
inspect the accessory such as abrasive wheels
for chips and cracks, backing pad for cracks, tear
or excess wear, wire brush for loose or cracked
wires. If power tool or accessory is dropped, in
spect for damage or install an undamaged accessory. After inspecting and installing an accessory,
position yourself and bystanders away from the
plane of the rotating accessory and run the power
tool at maximum no-load speed for one minute.
Damaged accessories will normally break apart during
this test time.
• Wear personal protective equipment. Depending
on application, use face shield, safety goggles or
safety glasses. As appropriate, wear dust mask,
hearing protectors, gloves and workshop apron
capable of stopping small abrasive or workpiece
fragments. The eye protection must be capable of
stopping ying debris generated by various opera
tions. The dust mask or respirator must be capable
of ltrating particles generated by your operation.
Prolonged exposure to high intensity noise may cause
hearing loss.
• Keep bystanders a safe distance away from work
area. Anyone entering the work area must wear
personal protective equipment. Fragments of
workpiece or of a broken accessory may y away
and cause injury beyond immediate area of operation.
• Hold the power tool by insulated gripping surfaces
only, when performing an operation where the cutting tool may contact hidden wiring. Contact with
a "live" wire may also make exposed metal parts of
the power tool "live" and could give the operator an
electric shock.
• Position the cord clear of the spinning accessory. If
you lose control, the cord may be cut or snagged and your
hand or arm may be pulled into the spinning accessory.
• Never lay the power tool down until the acces-
sory has come to a complete stop. The spinning
accessory may grab the surface and pull the power
tool out of your control.
•
Do not run the power tool while carrying it at your side.
Accidental contact with the spinning accessory could
snag your clothing, pulling the accessory into your body.
• Regularly clean the power tool’s air vents. The
motor’s fan will draw the dust inside the housing
and excessive accumulation of powdered metal may
cause electrical hazards.
-
-
-
• Do not operate the power tool near ammable
materials. Sparks could ignite these materials.
• Do not use accessories that require liquid cool
ants. Using water or other liquid coolants may result
in electrocution or shock.
Kickback and Related Warnings
Kickback is a sudden reaction to a pinched or snagged
rotating wheel, backing pad, brush or any other acces-
sory. Pinching or snagging causes rapid stalling of the
rotating accessory which in turn causes the uncontrolled power tool to be forced in the direction opposite
of the accessory’s rotation at the point of the binding.
For example, if an abrasive wheel is snagged or
pinched by the workpiece, the edge of the wheel that
is entering into the pinch point can dig into the surface
of the material causing the wheel to climb out or kick
out. The wheel may either jump toward or away from
the operator, depending on direction of the wheel’s
movement at the point of pinching. Abrasive wheels
may also break under these conditions.
Kickback is the result of power tool misuse and/or in-
correct operating procedures or conditions and can be
avoided by taking proper precautions as given below.
• Maintain a rm grip on the power tool and posi-
tion your body and arm to allow you to resist
kickback forces. Always use auxiliary handle, if
provided, for maximum control over kickback or
torque reaction during start-up. The operator can
control torque reactions or kickback forces, if proper
precautions are taken.
• Never place your hand near the rotating acces-
sory. Accessory may kickback over your hand.
• Do not position your body in the area where power
tool will move if kickback occurs. Kickback will
propel the tool in direction opposite to the wheel’s
movement at the point of snagging.
• Use special care when working corners, sharp
edges etc. Avoid bouncing and snagging the accessory. Corners, sharp edges or bouncing have a
tendency to snag the rotating accessory and cause
loss of control or kickback.
• Do not attach a saw chain woodcarving blade or
toothed saw blade. Such blades create frequent
kickback and loss of control.
Safety Warnings Specic for Grinding and Abrasive Cutting-O Operations:
• Use only wheel types that are recommended for
your power tool and the specic guard designed
for the selected wheel. Wheels for which the power
tool was not designed cannot be adequately guarded
and are unsafe.
• The grinding surface of centre depressed wheels
must be mounted below the plane of the guard lip.
An improperly mounted wheel that projects through the
plane of the guard lip cannot be adequately protected.
• The guard must be securely attached to the power
tool and positioned for maximum safety, so the
least amount of wheel is exposed towards the
operator. The guard helps to protect the operator
from broken wheel fragments, accidental contact with
wheel and sparks that could ignite clothing.
• Wheels must be used only for recommended
applications. For example: do not grind with the
side of cut-o wheel. Abrasive cut-o wheels are
intended for peripheral grinding, side forces applied
to these wheels may cause them to shatter.
• Always use undamaged wheel anges that are of
correct size and shape for your selected wheel.
Proper wheel anges support the wheel thus reducing
the possibility of wheel breakage. Flanges for cut-o
wheels may be dierent from grinding wheel anges.
3
-
C
US
• Do not use worn down wheels from larger power
WARNING
WARNING
tools. Wheel intended for larger power tool is not suit-
able for the higher speed of a smaller tool and may burst.
Additional Safety Warnings Specic for Abrasive
Cutting-O Operations:
• Do not “jam” the cut-o wheel or apply excessive
pressure. Do not attempt to make an excessive
depth of cut. Overstressing the wheel increases the
loading and susceptibility to twisting or binding of
the wheel in the cut and the possibility of kickback or
wheel breakage.
• Do not position your body in line with and behind
the rotating wheel. When the wheel, at the point of
operation, is moving away from your body, the possible kickback may propel the spinning wheel and the
power tool directly at you.
• When wheel is binding or when interrupting a cut
for any reason, switch o the power tool and hold
the power tool motionless until the wheel comes
to a complete stop. Never attempt to remove the
cut-o wheel from the cut while the wheel is in
motion otherwise kickback may occur. Investigate
and take corrective action to eliminate the cause of
wheel binding.
• Do not restart the cutting operation in the work-
piece. Let the wheel reach full speed and carefully
re-enter the cut. The wheel may bind, walk up or kick-
back if the power tool is restarted in the workpiece."
• Support panels or any oversized workpiece to
minimize the risk of wheel pinching and kickback.
Large workpieces tend to sag under their own weight.
Supports must be placed under the workpiece near
the line of cut and near the edge of the workpiece on
both sides of the wheel.
• Use extra caution when making a “pocket cut” into
existing walls or other blind areas. The protruding
wheel may cut gas or water pipes, electrical wiring or
objects that can cause kickback.
Safety Warnings Specic for Sanding Operations:
• Do not use excessively oversized sanding disc
paper. Follow manufacturers recommendations,
when selecting sanding paper. Larger sanding
paper extending beyond the sanding pad presents a
laceration hazard and may cause snagging, tearing
of the disc or kickback.
Safety Warnings Specic for Wire Brushing Operations:
• Be aware that wire bristles are thrown by the brush
even during ordinary operation. Do not overstress
the wires by applying excessive load to the brush.
The wire bristles can easily penetrate light clothing
and/or skin.
• If the use of a guard is recommended for wire
brushing, do not allow any interference of the
wire wheel or brush with the guard. Wire wheel or
brush may expand in diameter due to work load and
centrifugal forces.
Additional Safety Warnings
•
ant dust extraction solution when working in
dusty situations. Dust particles can harm your
lungs.
• 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
To reduce the risk of injury, wear a
dust mask or use an OSHA compli-
Some dust created by power sanding,
sawing, grinding, drilling, and other
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 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.
SPECIFICATIONS
Volts .............................................................120 AC
Amps ...................................................................11
RPM ..............................................................12,000
Spindle Thread Size ....................................5/8"-11
Wheel Size ....................................................4-1/2"
Guard Type .................................................Type 27
Cat. No. ..................................................... 6141-30
Lock-On .............................................................Yes
Cat. No. ..................................................... 6141-31
Lock-On ..............................................................No
Cat. No. ..................................................... 6142-30
Lock-On .............................................................Yes
Cat. No. ..................................................... 6142-31
Lock-On ..............................................................No
FUNCTIONAL DESCRIPTION
1. Side handle
2. Spindle lock
3. Side handle socket
4. Handle
5. Switch lock-o
2
1
10
3
9
4
7
8
6. Switch lock-on
(some models)
7. Paddle switch
8. Type 27 guard
9. Accessory
10. Detent tab
SYMBOLOGY
Double Insulated
Volts
Amps
-
4
Alternating Current
Rated Revolutions per Minute (RPM)
UL Listing Mark for Canada and U.S.
Approval Mark for Mexico
5
6
GROUNDING
WARNING
WARNING
Improperly connecting the grounding wire can result in the risk of
electric shock. Check with a qualied electrician
if you are in doubt as to whether the outlet is
properly grounded. Do not modify the plug provided with the tool. Never remove the grounding
prong from the plug. Do not use the tool if the
cord or plug is damaged. If damaged, have it
repaired by a MILWAUKEE service facility before
use. If the plug will not t the outlet, have a
proper outlet installed by a qualied electrician.
Grounded Tools (Three-Prong Plugs)
Tools marked “Grounding Required” have a three
wire cord and three prong grounding plug. The plug
must be connected to a properly grounded outlet
(See Figure A). If the tool should electrically malfunction or break down, grounding provides a low
resistance path to carry electricity away from the
user, reducing the risk of electric shock.
The grounding prong in the plug is connected through
the green wire inside the cord to the grounding
system in the tool. The green wire in the cord must
be the only wire connected to the tool's grounding
system and must never be attached to an electrically
“live” terminal.
Your tool must be plugged into an appropriate outlet, properly installed and
grounded in accordance with all codes
and ordinances. The plug and outlet
should look like those in Figure A.
Double Insulated Tools (Two-Prong Plugs)
Tools marked “Double Insulated” do not require
grounding. They have a special double insulation
system which satisfies OSHA requirements and
complies with the applicable standards
of Underwriters Laboratories, Inc., the
Canadian Standard Association and
the National Electrical Code. Double
Insulated tools may be used in either
of the 120 volt outlets shown in Figures
B and C.
Fig. A
Fig. B
Fig. C
EXTENSION CORDS
Grounded tools require a three wire extension
cord. Double insulated tools can use either a two
or three wire extension cord. As the distance from
the supply outlet increases, you must use a heavier
gauge extension cord. Using extension cords with
inadequately sized wire causes a serious drop in
voltage, resulting in loss of power and possible tool
damage. Refer to the table shown to determine the
required minimum wire size.
The smaller the gauge number of the wire, the greater
the capacity of the cord. For example, a 14 gauge
cord can carry a higher current than a 16 gauge cord.
When using more than one extension cord to make
up the total length, be sure each cord contains at
least the minimum wire size required. If you are using
one extension cord for more than one tool, add the
nameplate amperes and use the sum to determine
the required minimum wire size.
Guidelines for Using Extension Cords
• If you are using an extension cord outdoors, be sure
it is marked with the sux “W-A” (“W” in Canada) to
indicate that it is acceptable for outdoor use.
• Be sure your extension cord is properly wired and in
good electrical condition. Always replace a damaged
extension cord or have it repaired by a qualied
person before using it.
• Protect your extension cords from sharp objects,
excessive heat and damp or wet areas.
Recommended Minimum Wire Gauge
For Extension Cords*
Extension Cord Length
Nameplate Amps
0 - 2.0
2.1 - 3.4
3.5 - 5.0
5.1 - 7.0
7.1 - 12.0
12.1 - 16.0
16.1 - 20.0
* Based on limiting the line voltage drop to ve volts at 150%
of the rated ampere.
25' 50' 75' 100' 150'
18
18
18
18
18
18
18
16
14
12
18
18
16
14
12
10
18
16
14
12
10
--
16
14
12
10
16
14
12
12
--
--
--
--
--
ASSEMBLY
To reduce the risk of injury, always
removing accessories.
To reduce the risk of injury when grinding, always
use properly installed guards.
Removing/Installing/Adjusting the Guard
This tool is shipped with a guard. The guard must be
used when using the tool as a grinder. The guard may
be removed when using tool as a sander.
1. To remove the guard, unplug tool and remove any
accessories from spindle.
2. Press in the detent tab and rotate the guard clock-
wise until the tabs on the grinder line up with the
slots in the guard.
3. Lift the guard straight up and away from the tool.
4. To install the guard, unplug the tool and remove
any accessories from the spindle.
5. Line up the tabs on the grinder with the slots in
the guard. The arrows on the grinder and guard
will align.
6. Press in the detent tab and press the guard onto
the tool. Rotate guard counterclockwise into rst
detent slot.
unplug tool before changing or
5
7. To adjust the guard, press in the detent tab
WARNING
WARNING
WARNING
and rotate the guard to one of ve detent slots.
WARNING! Always adjust the guard to provide the
operator with maximum protection while operating.
Operator's Zones
To reduce the risk of injury, always
tool. Hold securely.
The side handle may be installed on either side of
the gear case. Position the side handle in the location which oers best control and guard protection.
To install, thread side handle into side handle socket
and tighten securely.
the use, care and protection of grinding wheels.
Use grinding wheels, and accessories that are:
• correct size as written on tool’s nameplate.
• rated at or above the RPM listed on the tool’s name-
plate.
• correct accessory, wheel type and grit for the job.
Grinding is the cutting action of thousands of abrasive
grains on the face of a grinding wheel. When grinding
metals such as steel and iron, choose an aluminum
oxide grinding wheel. Select a silicon carbide grinding
wheel for stone and concrete. Use cotton reinforced
wheels for non-ferrous metals.
Type 1 Reinforced 1/8" thick or less Cut-O Wheels
are suited for small cut-o and shallow notching
operations only. Always handle wheels carefully to
avoid damage. Before installing any wheel, always
inspect it for cracks. If wheel is cracked, discard it to
prevent others from using it.
Care of Grinding & Cut-O Wheels
Grinding/cut-o wheels should be protected from:
• wetness and extreme humidity
• any type of solvent
• extreme changes in temperature
• dropping and bumping
Grinding and cut-o wheels should be stored:
• in an organized way so wheels can be removed
without disturbing or damaging other wheels
• with their safety information
Grinding and cut-o wheels should NOT be dropped,
rolled or bumped.
Discard wheels that have been dropped, rolled,
bumped, subjected to extreme changes in temperature, or come into contact with solvents or wetness.
use a side handle when using this
Installing Side Handle
To reduce the risk of injury, the
operator should be instructed in
Grinding Wheel Selection
Only use accessories with Maxi-
at least equal to the maximum speed marked on
the power tool. This speed is based on the
strength of the wheel, allowing for a reasonable
measure of safety. It is not meant to imply a best
or most ecient operating speed. Do not exceed
the Maximum Safe Operating Speed.
Installing/Removing Grinding Wheels
Make sure the wheel does not extend beyond the
bottom of the guard. Threaded hub grinding wheels
may require a deeper guard (see "Accessories").
1. Unplug the tool. WARNING! Always unplug tool
before changing or removing accessories.
2. Properly position the guard.
3. Wipe the ange, ange nut and spindle to remove
dust and debris. Inspect the parts for damage. Replace if needed. Use only MILWAUKEE mounting
hardware designed for your tool.
4. Place the ange on spindle, as shown.
Flange nut
Grinding
wheel
Flange
Spindle
5. Place the selected wheel on the spindle and align
it with the ange.
6. Position the ange nut over the spindle according
to wheel thickness.
Flange nut
position for
1/8" thick or less wheels
Flange nut
position for
1/4" thick or more wheels
7. Press in the spindle lock button while turning the
ange nut clockwise. Tighten securely.
8. To remove wheel, unplug the tool and reverse the
procedure.
Use sanding discs and accessories that are:
• correct size as written on tool’s nameplate.
• rated at or above the RPM listed on the tool’s name-
plate.
• correct accessory, wheel type and grit for the job.
Select the correct type of sanding disc for your job.
Generally, use 24 or 36 grit for heavy stock removal;
50, 60, or 80 grit for medium stock removal and 120
grit for nishing. Always begin with a coarse grit, using successively ner grits to obtain the desired nish.
•Aluminum Oxide: For fast cutting, general purpose
discs for most metal jobs. Best for cold-rolled steel,
stainless steel or metals requiring tough, fast cutting,
long lasting abrasives.
6
mum Safe Operating Speed rated
1/8"
1/4"
Sanding Disc Selection
•Aluminum Zirconia Bi-Cut: Unique grit pattern is
WARNING
WARNING
WARNING
arranged in clusters for faster stock removal and
cleaning. Ideal for removing paint from cars, boats,
etc. without clogging.
•Ceramic: Lasts up to 3 times longer than Aluminum
Oxide Discs. For general metal working. Ideal for
tough jobs.
Installing Backing Pad and Sanding Discs
1. Unplug the tool. WARNING! Always unplug tool
before changing or removing accessories.
2. Wipe the accessories, disc nut and spindle to
remove dust and debris. Inspect the parts for damage. Replace if needed. Use only MILWAUKEE
mounting hardware designed for your tool.
3. Slip backing pad onto spindle with at side away
from gear case.
4. Place sanding disc on backing pad and secure
assembly to spindle with disc nut.
Disc nut
Sanding
disc
Backing
pad
Spindle
5. Press in the spindle lock button while turning disc
nut clockwise. Tighten securely.
6. To remove backing pad and sanding disc, unplug
the tool and reverse the procedure.
OPERATION
To reduce the risk of injury, always
with side shields. Never grind without proper
safety equipment.
To reduce the risk of injury, wear a dust mask or
use an OSHA compliant dust extraction solution
when working in dusty situations.
The controlled start feature reduces the torque reac-
tion "jerk" when its trigger is pulled.
Constant Speed Tachometer (some models)
The constant speed tachometer keeps the tool's
revolutions per minute at an almost constant speed
even under load. The tachometer also helps prevent tool overheating. The tool switches itself o
automatically when the motor is overloaded. If this
happens, release the trigger to reset. Pull the trigger
and continue work.
The electric brake engages when the trigger is released, causing the wheel to stop and allowing you
to proceed with your work. Generally, the wheel stops
within six seconds. However, there may be a delay
between the time you release the trigger and when
the brake engages. Occasionally the brake may miss
completely. If the brake misses frequently, the saw
needs servicing by an authorized MILWAUKEE ser-
vice facility. Make sure the tool comes to a complete
stop before laying it down.
wear safety goggles or glasses
Controlled Start (some models)
Electric Brake (some models)
Always hold the tool rmly with
provided before and during grinding.
To start the tool, grasp the handle and side handle
rmly. Pull the lock-o button back and squeeze the
paddle switch.
To stop the tool, release the paddle switch. Make
sure the tool comes to a complete stop before laying
the tool down.
To lock-on the switch (some models), start the tool
and push in the lock-on button. To stop the tool,
squeeze and release the paddle switch. Make sure
the tool comes to a complete stop before laying the
tool down.
1. If you have just installed an accessory or are
beginning a period of work, test the wheel by
letting it spin for one minute before applying it to
the workpiece. WARNING! Never use a grinding
wheel that has been dropped. Out-of-balance or
damaged accessories can mar workpiece, damage the tool, and cause stress that may cause
accessory failure.
2. Use a clamp, vise or other practical means to hold
your work, freeing both hands to control the tool.
3. WARNING! Hold tool securely with both hands.
Start the tool.
NOTE: On some models, if the tool is plugged in
when the tool switch is in the "ON" position, the
tool will not run. Turn the tool o, then back on to
begin work.
4. Allow accessory to come to full speed before
beginning work.
5. Control pressure and surface contact between
accessory and workpiece. WARNING! Never
bang grinding wheel onto work.Too much pressure
causes accessory failure or slows speed.
6. When nished, turn o the tool and make sure it
comes to a complete stop before laying it down.
both hands using the handles
Paddle Switch Operation
General Operation
Using Grinding Wheels
The guard type must match the
protection for the operator if the wheel should
break.
When grinding, hold tool at a 5
constant pressure for a uniform nish. Too great an
angle causes concentrated pressure on small areas
which may gouge or burn work surface.
7
wheel type to provide maximum
o
to 15o angle, using
Hold at a 5° to
15° angle
For best result use only this portion of disc
Cut-O Wheels are suited for small cut-o and shal-
WARNING
WARNING
Using Cut-O Wheels
low notching operations only.
protection for the operator if the wheel should
break.
When using a cut-o wheel, hold the tool as shown,
using only the edge of the wheel. WARNING! Using
the face of a Cut-O Wheel (as in grinding) will cause
the Wheel to crack and break, resulting in serious
personal injury.
The guard type must match the
wheel type to provide maximum
Control pressure and surface contact between
wheel and workpiece. Too much pressure causes
over-bending of wires and heat build-up causing
premature wire breaking, rapid dulling and reduced
brush life. Instead of more pressure, try a wire wheel
with more aggressive cutting action (increased wire
size, decreased wire length or dierent brush type
(knot type vs. crimped wire type).
Hold tool at 5° to 15° angle to ensure proper sanding
pressure and control. Too great an angle will result
in too much pressure and could cause excessive
wear to the disc and workpiece. Too small an angle
will reduce control.
Use long, sweeping, side to side strokes, advancing
forward to produce the desired nish.
Using Sanding Discs
Wire brushes are useful for removing rust, scale,
burrs, weld slag, etc.
goggles or face shields. Fatigued wires and
residue will y o the brush with considerable
force, causing potential for serious injury.
Never exceed Maximum Safe Operating Speed of
brush. Do not use a damaged brush or one that
is functioning improperly (throwing wires, out-
of-balance, etc.). These conditions increase the
possibility of further brush failure and possible
injury. Discard and replace damaged brushes
immediately.
A Type "27" guard must be properly installed
when using a wire wheel brush to provide maxi-
mum protection for the operator when fatigued
wires break. (See "Removing/Installing/Adjusting
the guard".)
Always install wire brushes according to the acces-
sory manufacturer’s instructions. Only use accessories with threads matching the tool spindle.
Using Wire Brushes
Everyone in the area must wear
protective clothing and safety
Guard
Wire Wheel Brush
Wire
Cup
Brush
Hold at a 5° to
15° angle
For best result use only this portion of disc
Cross Sanding - When nishing a surface that
has been prepared by a coarse disc or wheel, sand
at right angles to the strokes made by the coarser
disc. Finishing marks left from previous sanding are
easily seen and removed for a uniform nish. Failure
to cross sand when changing from a coarse disc to
a nishing disc may result in deep scratches and
circular marks.
Removing Welds or Hammer Marks - When removing welds or hammer marks, limit coarse sanding to
the immediate area. Use successively ner grits to
smooth surface.
Finishing Metal - Constantly move across the sur-
face. Work faster on curved surfaces where contact
areas are smaller and pressure is greater. Flat areas
may appear at the end of the stroke when pressure
is too heavy. Ease up on pressure at end of each
stroke and when reversing strokes.
Deep scratches and circular marks can result from:
• Using too coarse a grit
• Using a partially glazed disc
• Dirt or loose metal on the workpiece
• Failure to sand across the grain when changing from
coarse to nishing discs
• Failure to use closed coated discs to reduce the
problem of grains working loose and scratching the
workpiece
Bluish discoloration of metal surface indicates:
• Excessive heat caused by circular motion in a small area
• Excessive pressure
• Use of worn out or glazed discs
Troubleshooting
Test wheel for balance and loose or damaged wires
by letting it spin for one minute before applying it to
the workpiece. During this time, no one should stand
in front of or in line with it.
8
MAINTENANCE
WARNING
WARNING
WARNING
To reduce the risk of injury, always
unplug the tool before performing
any maintenance. Never disassemble the tool.
Contact a MILWAUKEE service facility for ALL
repairs.
Keep your tool 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 condi-
tion that may aect the tool operation. Return the tool
to a MILWAUKEE service facility for repair. After six
months to one year, depending on use, return the
tool to a MILWAUKEE service facility for inspection.
Maintaining Tools
To reduce the risk of personal injury, electric shock and damage,
never immerse your tool in liquid or allow a liquid
to ow inside it.
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 to the nearest service center.
Cleaning
Repairs
ACCESSORIES
Use only recommended accesso-
ries. Others may be hazardous.
For a complete listing of accessories, go online to
www.milwaukeetool.com or contact a distributor.
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
1.800.268.4015
or visit www.milwaukeetool.ca
LIMITED WARRANTY
USA & CANADA
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 is two (2) years from the date of purchase. The
warranty period for the M18™ Compact Heat Gun and the 8 Gallon
Dust Extractor is three (3) years from the date of purchase. The war-
ranty 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.
ACCEPTANCE OF THE EXCLUSIVE REPAIR AND REPLACEMENT
REMEDIES DESCRIBED HEREIN IS A CONDITION OF THE CONTRACT FOR THE PURCHASE OF EVERY MILWAUKEE PRODUCT.
IF YOU DO NOT AGREE TO THIS CONDITION, YOU SHOULD NOT
PURCHASE THE PRODUCT. IN NO EVENT SHALL MILWAUKEE
BE LIABLE FOR ANY INCIDENTAL, SPECIAL, CONSEQUENTIAL
OR PUNITIVE DAMAGES, OR FOR ANY COSTS, ATTORNEY FEES,
EXPENSES, LOSSES OR DELAYS ALLEGED TO BE AS A CONSEQUENCE OF ANY DAMAGE TO, FAILURE OF, OR DEFECT IN ANY
PRODUCT INCLUDING, BUT NOT LIMITED TO, ANY CLAIMS FOR
LOSS OF PROFITS. 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. THIS WARRANTY IS EXCLUSIVE AND IN LIEU
OF ALL OTHER EXPRESS WARRANTIES, WRITTEN OR ORAL.
TO THE EXTENT PERMITTED BY LAW, MILWAUKEE DISCLAIMS
ANY IMPLIED WARRANTIES, INCLUDING WITHOUT LIMITATION
ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS
FOR A PARTICULAR USE OR PURPOSE; TO THE EXTENT SUCH
DISCLAIMER IS NOT PERMITTED BY LAW, SUCH IMPLIED WARRANTIES ARE LIMITED TO THE DURATION OF THE APPLICABLE
EXPRESS WARRANTY AS DESCRIBED ABOVE. SOME STATES
DO NOT ALLOW LIMITATIONS ON HOW LONG AN IMPLIED WARRANTY LASTS, SO THE ABOVE LIMITATION MAY NOT APPLY TO
YOU, THIS WARRANTY GIVES YOU SPECIFIC LEGAL RIGHTS,
AND YOU MAY ALSO HAVE OTHER RIGHTS WHICH VARY FROM
STATE TO STATE.
This warranty applies to product sold in the U.S.A. and Canada only.
Please consult the ‘Service Center Search’ in the Parts & Service sec-
tion of MILWAUKEE’s website www.milwaukeetool.com or call 1.800.
SAWDUST (1.800.729.3878) to locate your nearest service facility for
warranty and non-warranty service on a Milwaukee electric power tool.
LIMITED WARRANTY - MEXICO,
CENTRAL AMERICA & CARIBBEAN
TECHTRONIC INDUSTRIES' warranty is for 5 years since the original
purchase date.
This warranty card covers any defect in material and workmanship
on this Product.
To make this warranty valid, present this warranty card, sealed/
stamped by the distributor or store where you purchased the product,
to the Authorized Service Center (ASC). Or, if this card has not been
sealed/stamped, present the original proof of purchase to the ASC.
Call toll-free1 01 (800) 030-7777 to nd the nearest ASC, for service,
parts, accessories or components.
Procedure to make this warranty valid
Take the product to the ASC, along with the warranty card sealed/
stamped by the distributor or store where you purchased the product,
and any faulty piece or component will be replaced without cost for
you. We will cover all freight costs relative with this warranty process.
Exceptions
This warranty is not valid in the following situations
a) When the product is used in a dierent manner from the end-user
guide or instruction manual.
b) When the conditions of use are not normal.
c) When the product was modied or repaired by people not authorized
by TECHTRONIC INDUSTRIES.
Note: If cord set is damaged, it should be replaced by an Authorized
Service Center to avoid electric risks.
9
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