Performance Tool W50044 User manual

4-1/2 IN. ANGLE GRINDER
OWNER’S MANUAL
Item Number W50044
WARNING
It is the owner and/or operators’ responsibility to study all WARNINGS, operating, and
maintenance instructions contained on the product label and instruction manual prior to
operation of this product. The owner/operator shall retain product instructions for future
reference.
The owner and/or operator are responsible for maintenance, maintaining all decals or
warning labels and while in use, maintaining the unit in good working order. If the owner and/
or operator are not fluent in English, the product warnings and instructions shall be read and
discussed with the operators’ native language by the purchaser/owner or his designee.
Make sure that the operator comprehends its contents. Safety information shall be
emphasized and understood prior to usage. The product shall be inspected per the
operating instructions.
Users of this product must fully understand these instructions. Each person operating this
product must also be of sound mind and body and must not be under the influence of any
substance that might impair their vision, dexterity or judgment.
Protect yourself and others by observing all safety information.

SAFETY GUIDELINES / DEFINITIONS
UNPACKING AND INSPECTION
SPECIFICATIONS
IMPORTANT SAFETY INFORMATION
WARNING
READ, UNDERSTAND AND FOLLOW ALL INSTRUCTIONS AND WARNINGS BEFORE OPERATING THIS
PRODUCT. FAILURE TO DO SO MAY
RESULT IN FIRE, ELECTRICAL SHOCK, PERSONAL INJURY AND/OR
PROPERTY DAMAGE AND WILL VOID WARRANTY.
1. Always use common sense and pay particular
attention to all the DANGER, WARNING, CAUTION
and NOTICE statements of this manual. The safety
instructions provided are not intended to cover all pos-
sible conditions and practices that may occur when
operating, maintaining and cleaning power tools.
2.Observe work area conditions. Do not use machines
or power tools in damp or wet locations. Don’t expose
to rain or snow. Keep work area well lighted. Do not
use electrically powered tools in the presence of
ammable gases or liquids. Do not bring combustible
materials near the tools. Power tools create sparks,
which may ignite the dust or fumes. Do not immerse
tool in liquids. Keep work area clean, well ventilated
and well lit. Cluttered work areas invite accidents.
3. Use personal protective equipment. Wear ANSI
approved safety goggles. Protective equipment such
as dusk mask, non-skid safety shoes, hard hat, heavy
duty work gloves or hearing protection used for ap-
propriate conditions will reduce personal injuries.
4.Keep bystanders, children and visitors away while
operating this product. Distractions can cause you to
lose control.
5. Stay alert. Watch what you are doing, and use com-
mon sense when operating this tool. Do not use this
product while tired or under the inuence of drugs,
alcohol, or medication. A moment of inattention while
operating this product may result in serious personal
injury. Keep proper footing and balance at all times.
Do not reach over or across running machines,
hoses, cords, etc.
WARNING: Read and understand this entire instruction manual before attempting to assemble, install, operate or
maintain this product. Failure to comply with the instructions may result in serious personal injury and/or property
damage!
The following signal words are used to emphasize safety warnings that must be followed when using this
product:
This instruction manual is intended for your benefit. Please read and follow the safety, installation, maintenance and troubleshooting steps
described within to ensure your safety and satisfaction. The contents of this instruction manual are based upon the latest product information
available at the time of publication. The manufacturer reserves the right to make product changes at any time without notice.
DANGER Indicates an imminently hazardous situation that, if
not avoided, WILL result in death or serious injury.
WARNING Indicates a potentially hazardous situation that, if
not avoided, COULD result in death or serious injury.
CAUTION Indicates a potentially hazardous situation that, if
not avoided, MAY result in minor or moderate injury.
NOTICE Indicates important information, which if not followed,
MAY cause damage to equipment.
After opening the carton, unpack your new product and related parts & accessories. Please inspect it carefully for
any damage that may have occurred during transit. Please check it against the photograph on carton.
WARNING DO NOT operate this product if damaged during shipment, handling or misuse. Do not operate the product until the
parts have been replaced or the fault rectified. Failure to do so may result in serious personal injury or property damage. All damaged
parts must be repaired or replaced as needed prior to operating this product. Check to see that all nuts, bolts and fittings are secure
before putting this product into service.
Please have the serial number, model number, and date of purchase available for reference when calling.
Specifications are
subject to change
without notice.
Input ..................................................................... 120V ~ 60Hz
Current ..............................................................................4.3 A
Rated power ....................................................................500W
No load speed ...................................................... 12,000 RPM
Wheel diameter ..............................................................4.5 in.
Arbor ............................................................... 5/8 in. - 11 UNC
Flange shoulder diameter .............................................7/8 in.

IMPORTANT SAFETY INFORMATION
6.Dress properly. Do not wear loose clothing or jewelry.
Keep your hair, clothing and gloves away from mov-
ing parts. Loose clothes, jewelry or long hair can be
caught in moving parts.
7. Work Safe. Operate tool a safe distance from yourself
and others in the work area. Keep proper footing and
balance at all times. Do not overreach, especially on
ladders. Be certain ladders being used are sturdy,
stable, on a rm surface and erected as safe work-
ing angles. Do not reach over or across running
machines, hoses, cords, etc.
8.Inspect tool before every use; do not use if parts are
loose or damaged.
9.Do not alter this product in any way.
10. Use the right tool for the job. Do not attempt to
force a small tool or attachment to do the work of a
larger industrial tool. Don’t use a tool whose perfor-
mance is not adequate for your work. Do not modify
this tool and do not use this tool for a purpose for
which it was not intended.
11. People with pacemakers should consult their
physician(s) before use. Electromagnetic elds in
close proximity to heart pacemaker could cause
pacemaker interference or pacemaker failure. In
addition, people with pacemakers should:
• Avoid operating alone.
• Do not use with power switch locked on.
• Properly maintain and inspect to avoid
electrical shock.
• Any power cord must be properly grounded.
Ground Fault Circuit Interrupter (GFCI) should
also be implemented – it prevents sustained
electrical shock.
12. 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.
Unmodied plugs and matching outlets will reduce
risk of electric shock. Do not use tool if plug is
damaged.
13. 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.
14. Do not expose power tools to rain or wet conditions.
Water entering a power tool will increase the risk of
electric shock.
15. Do not abuse the cord. Never use the cord for carry-
ing, 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. Do not use tool if cord is damaged.
16. When operating a power tool outdoors, use only
a 3-wire grounded cord with a wire size of 14
gauge or larger. We recommend they be listed
by Underwriters Laboratories (UL) in the USA or
(CSA) Canadian Standards Association in Canada
and be suitable for outdoor use. Cords marked for
outdoor use are also suitable for indoor use. Use of
a cord suitable for outdoor use reduces the risk of
electric shock.
17. If operating a power tool in a damp location is
unavoidable, use a ground fault circuit interrupter
(GFCI) protected supply. Use of a GFCI reduces
the risk of electric shock.
18. Use power tool ONLY on adequately rated circuits
to avoid overheating of electrical systems.
19. Prevent accidental starting. Ensure 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 nger on the switch
or energizing power tools that have the switch “ON”
invites accidents.
20. Never let the power tool operate while unattended
and unplug when not in use or before servicing.
21. 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.
22. Never use this tool without the proper guard. The
grinding wheel could shatter during use. Make sure
the guard covers the side of the wheel facing you.
23. Never bounce the tool while grinding. This may
crack the wheel.
24. Grinding metal will cause sparks! Keep them di-
rected away from people and ammable materials.
Always keep the guard positioned so that as much
of the exposed disc as possible is pointing away
from you.
25. Keep children and pregnant women away from the
work area until the grinding is completed and the
area has been cleaned up.
26. Always wear full eye, face and body protection.
Wire bristles may break off and y toward the
user. Always wear ear protection when grinding
in enclosed spaces. Noise level may be amplied
in such locations and may cause permanent
hearing loss.
27. Always wear an OSHA approved dusk mask or
respirator when inside the work area. Replace the
lter daily. NOTE: Not all dust masks offer protec-
tion from lead paint dust. Be sure to use the proper
mask for the job.
28. Before connecting the tool to the power supply fol-
low the safety instructions for installing the grinding
or cutting wheels. Do not lock the wheels too tight
or cracks may occur.
29. Only use grinding or cutting wheels with the correct
bore size for the spindle of the grinder.
30. Use standard parts. Do not use coolant or water
and do not use as a xed grinder.
31. Do not start the tool when the grinding or cutting
wheels are touching the work area.
32. Keep the power cord well away from the cutting
area during use. Always position the cord so that

IMPORTANT SAFETY INFORMATION
it will not be caught in the workpiece when the
grinder is in use.
33. Always have the guards in place and properly
positioned when using grinding wheels or wire
cup brushes.
34. Secure the material being grinded. Never hold it in
your hand or across your legs. Do not use your legs
or feet to stabilize the workpiece. Unstable support
can cause loss of control and could result in lacera-
tions or injury.
35. Use clamps or other practical ways to secure and
support the workpiece to a stable platform.
36. Always make sure no one, including the user, is in
line with the tool when starting the motor.
37. Always use both hands when operating the
Angle Grinder.
38. Always hold this tool by the insulated gripping
surfaces. If this tool should accidentally cut across
its own cord or hidden wiring, all exposed metal
parts will become live and could seriously shock
the user.
39. When using the Angle Grinder, always maintain a
rm grip on the tool. Keep your hands well away
from the grinding wheel or brush. Never reach
underneath the Angle Grinder while the sanding
disk is in motion.
40. When the Angle Grinder is in operation, keep hands
away from the cutting or grinding area.
41. Do not run the Angle Grinder while carrying it at
your side. A moving grinding wheel or brush could
cause lacerations or personal injury.
42. The disc will not stop immediately when the Angle
Grinder is turned off. Exercise caution.
43. Do not set the Angle Grinder down after use until
the grinding or cutting wheels have come to a
complete stop.
44. Keep the handle of the Angle Grinder dry, clean and
free from oil and grease.
45. Only use grinding and cutting wheels that are
approved for a maximum speed of 11,000 RPM
or greater.
46. After replacing a wheel or brush, always let the tool
run for one minute in a well-protected area. If the
new accessory has an undetected aw, it should
break apart in less than a minute.
47. Unplug Angle Grinder from power supply and place
the switch in the locked or “OFF” position before
making any assembly adjustments, changing ac-
cessories or performing any inspection, mainte-
nance or cleaning procedures. Such preventive
safety measures reduce the risk of starting the
tool accidentally. Such preventive safety measures
reduce the risk of starting the tool accidentally
which could cause serious personal injury.
48. Check for misalignment or binding of moving parts,
breakage of parts, and any other condition that
may affect the tool’s operation. Many accidents are
caused by poorly maintained tools.
49. Maintain labels and nameplates on the Angle
Grinder. These carry important information. If
unreadable or missing, contact Performance Tool®
for a replacement.
50. Do not disassemble the angle grinder.
51. Have your power tool serviced by a qualied repair
person using only identical replacement parts
This will ensure that the safety of the power tool is
maintained. Follow instructions in the Maintenance
section of this manual. Use of unauthorized parts
or failure to follow Maintenance Instructions may
create a risk of shock or injury.
WARNING: Some dust created by power sanding
contains chemicals known to the State of California
to cause cancer, birth defects or other reproduc-
tive harm. An example of this type of chemical is
lead from lead based paints, Crystalline Silica from
bricks and cement or other masonry,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 expo-
sure: work in a well ventilated area and work with
approved safety equipment, such as dusk masks
that are specially designed to lter out microscopic
particles.
WARNING: This product and its packaging contain a
chemical known to the State of California to cause
cancer, birth defects, or other reproductive harm.

Figure B
Use only accessories that are recommend-
ed by the manufacturer for your model.
Accessories that may be suitable for one
tool may become hazardous when used on
another tool.
Always attach grounded (3-prong) exten-
sion cords to grounded (3-hole) outlets. If
you must use an extension cord, be sure
that the gauge is large enough to carry
the amount of current necessary for your
power tool. If not, your tool may experience
a loss of power, excessive voltage drop
or overheating. The smaller the gauge
number, the heavier the cord (see table on
next page).
EXTENSION CORDS
1. Tools marked with “Grounding Required” have
a three wire cord and three prong ground-
ing plug. The plug must be connected to a
properly grounded outlet. 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. (See Figure A.)
2. 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.
(See Figure A.)
3. Your tool must be plugged into an ap-
propriate outlet, properly installed and
grounded in accordance with all codes and
ordinances. The plug and outlet should look
like those in the following illustration. (See
Figure A)
DOUBLE INSULATED TOOLS: TOOLS WITH TWO PRONG PLUGS
GROUNDING
GROUNDED TOOLS: TOOLS WITH THREE PRONG PLUGS
Figure A
1. 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. (See Figure B.)
2. Double insulated tools may be used in either
of the 120 volt outlets shown in the following
illustration. (See Figure B.)
WARNING: Improperly connecting the grounding wire can result in the risk of electric
shock. Check with a qualified electrician if you are in doubt as to whether the outlet is
properly grounded. Do not modify the power cord plug provided with the tool. Never
remove the grounding prong from the plug. Do not use the tool if the power cord or plug
is damaged. If damaged, have it repaired by a service facility before use. If the plug will
not fit the outlet, have a proper outlet installed by a qualified electrician.

IMPORTANT: Some of the following symbols may be used on your tool. Please study them and learn
their meaning. Proper interpretation of these symbols will allow you to operate the tool better and safer.
SYMBOL DEFINITIONS
V Volts Voltage (Potential)
A Amperes Current
Hz Hertz Frequency (Cycles per Second)
W Watt Power
Kg Kilograms Weight
Alternating Current Type of Current
Direct Current Type of Current
Alternating or Direct Current Type of Current
Earthing Terminal Grounding Terminal
Class II Construction Denotes Double Insulation
min Minutes Time
s Seconds Time
Ø Diameter Size of Drill Bits, Grinding Wheels, etc.
n0 No load speed No-load Rotational Speed
.../min Revolutions per Minute Revolutions, Surface Speed,
Strokes, etc. per Minute
1,2,3,... Ring Selector Settings Speed, Torque or Position Settings
Symbol Name Explanation
GROUNDING
RECOMMENDED SIZES OF EXTENSTION CORDS
FOR 120 VOLT AC 60 HZ TOOLS
CURRENT RATINGS IN AMPS
MORE THAN
3
6
8
10
12
LESS THAN
6
8
10
12
16
10 ft.
18
18
18
16
14
25 ft.
18
18
18
16
14
100 ft.
18
16
14
14
NOT
RECOMMENDED
CONDUCTOR SIZE IN A.W.G.
50 ft.
18
18
18
14
12

ATTACHING WHEEL GUARD
CAUTION Never brush or grind without
the guard in place. Brushes are consid-
ered to be grinding wheels and must also
be used with guards.
1. Always unplug the tool before attempting
to change the guard or accessories.
2. Set the Angle Grinder on a at surface
with the spindle facing up.
3. Place the guard clamp over spindle head
assemble.
4. Rotate guard to desired location.
5. Tighten clamp screw with a Phillips
screwdriver.
6. Make sure that the guard is securely
tightened in place.
7. To remove guard, loosen clamp screw
and lift guard up while slightly rotating.
ASSEMBLY
ATTACHING AUXILIARY HANDLE
This tool comes with an auxiliary handle which
can be attached to different sides of theAngle
Grinder, depending on the preference of the
operator. This handle is necessary to maintain
complete control of the tool and should be used
at all times. Make sure this handle is always
fastened securely.
CONTROLS AND COMPONENTS
1. ON/OFF Switch with
lock-on feature
2. Protective Guard
3. Grinding Wheel
4. Spindle Lock Button
5. Side Handle
6. Power Cord 3
1
4
5
6
2

USING THE ON/OFF SWITCH
OPERATION
WARNING READ ALL WARNINGS IN THIS MANUAL BEFORE OPERATING THIS TOOL.
WARNING Never switch the Angle
Grinder “ON” or “OFF” while under load
conditions.
1. When starting hold the Angle Grinder
rmly with both hands. One hand on the
rear handle or the motor housing and the
other hand on the side handle.
2. To turn the Angle Grinder “ON” without
locking it, push the switch up without
putting pressure on the switch. When
pressure is released, the switch snaps to
the “OFF” position.
4. To lock the switch “ON”, press the switch
button up while pressing down.
5. To unlock the switch, simply press and
release the back (grooved) part of the
switch. Switch is spring loaded and will
snap back automatically.
CAUTION Always allow the Angle Grinder
to come up to full speed before touching
any surface. Always take the tool away
from the workpiece before turning the tool
“OFF”. Let the tool come to a complete
stop before setting it down. This tool
operates best under light pressure.
Exerting heavy pressure will not speed up
the work and may cause damage to the
motor.
ASSEMBLY
ATTACHING WHEELS WITH DEPRESSED CENTERS
ATTACHING GRINDING WHEEL OR CUTTING DISC
WARNING Always check the tool warning
label for the recommended speed rating
on accessories. Never run a wheel or
brush over the rated speed. Accessories
exceeding the recommended speed may
fly apart and cause serious personal injury.
NOTE Hubbed wheels do not require
mounting flanges.
1. Place the inner ange over the spindle
making sure the t is tight.
2. Place the grinding or cutting disc on the
top of the inner ange ensuring the bore
ts into the step of the ange.
3. Mount the concave recess side of the
outer ange nut over the spindle.
1. Unplug the grinder.
2. Turn the tool upside down.
3. Place the inner ange on the spindle so that it
matches with the ats on the shaft.
4. Fit the disc over the boss on the inner ange.
5.
Screw the wheel-retaining nut down over
the disc. Depending on the disc thickness,
the boss on the outer ange nut can face
down or up.
6. Fit the two prongs of the wrench into the holes
in the outer ange nut.
7. Depress the spindle lock button and rmly
tighten the nut with the wrench.
8. Turn the wheel by hand, checking for any
obstruction.

USING THE ANGLE GRINDER
This angle grinder is designed to accept only
4-1/2" abrasive discs with a 5/8" bore.
Check to ensure that any discs used on
this machine are rated for the 12,000 /min
speed of this grinder. Check also for any
damage to an abrasive disc before install-
ing. Any disc that is cracked, has been
dropped, or subjected to other damage due
to temperature extremes or solvents should
be discarded. A damaged disc can y apart
in use and may cause serious injury to the
operator or bystanders
1. Plug in the tool.
2. Hold the tool rmly with one hand on
the side handle and the other gripping
the housing. Check to make sure the
abrasive disc is not obstructed. Slide the
switch on the Top of the machine forward
with your thumb. Switching the tool on or
off under load will damage the switch.
NOTE For best tool control, material re-
moval and minimal loading, keep the
angle between the disc and the work
surface at approximately 30° when
grinding and 10°-15° when sanding.
3. To turn the tool off, slide the switch back.
WARNING: Turn off your tool at once,
unplug and inspect it for serious
problems if:
• Moving parts get stuck
• Speed drops to an abnormally low level
• The motor housing gets hot
• Sparks or odors emit from the casing
OPERATION
CARE & MAINTENANCE
WARNING Always turn power switch to
"OFF" position and unplug power cord
from electrical outlet before attempting
cleaning or maintenance.
NOTICE This power tool is lubricated
before it leaves the factory. This lubrica-
tion should last for the life of the tool. No
further lubrication is required.
The armature and motor are the heart of the
power tool. Exercise care to ensure they do not
become damaged or effected by oil or water.
Inspect the carbon brushes regularly and replace
them when they are worn. (about 1/3 of the way up)
Regularly inspect all mountings and screws and
ensure they are properly tightened. Failure to do
so may result in serious damage.
Consult an authorized maintenance service
agent in event of damage.
Clean and dust the Angle Grinder after each use.
Use compressed air to blow out any
accumulated dust or grit. Tiny particles from
metal grinding often accumulate inside your tool
and could create an electrical shock hazard.
Never use solvents or harsh chemicals. Use only
mild soap and a damp cloth to clean the tool.
Never let any liquid get inside the casing. Never
immerse any part of the tool in a liquid. Always
keep the ventilation openings clear.
Regularly clean the ventilation slots in your tool
using a soft brush or dry cloth.
1. Do not cover exhaust vents when the Angle
Grinder is in use. This may cause damage
to the motor and reduce efciency.
2. Guide back and forth over the work piece
in a steady motion.
3. When cutting avoid tilting the Angle Grinder
in the cutting plane. Ensure the cutting
wheel has a clean cutting edge.
4. To cut hard stone a diamond cutting wheel
is recommended.
5. Do nut use cutting wheel for rough grinding.

1 YEAR LIMITED WARRANTY
PERFORMANCE TOOL® extends only the following warranties, and only to original
retail purchasers. These warranties give specific legal rights. Except where prohibited
by local law, the law of the State of Washington governs all warranties and all
exclusions and limitations of warranties and remedies. There may be other rights which
vary from state to state.
PERFORMANCE TOOL® warrants the product to be free from defects in materials
and workmanship under normal use and service. Adefective product may be returned
for a free replacement within 90 days from the date of purchase, provided that product
is returned to place of purchase immediately after discovery of defect. After 90 days
and up to one year from date of purchase, PERFORMANCE TOOL® will replace at no
charge any parts which our examination shall disclose to be defective and under
warranty.
These warranties exclude blades, bits, punches, dies, bulbs, fuses, hoses, and other
consumables which must be replaced under normal use and service. These warranties
shall not apply to any product or part which is used for a purpose for which it is not
designed, or which has been repaired or altered in any way so as to affect adversely
its performance or reliability, nor shall these warranties apply to any product or part
which has been subject to misuse, neglect, accident or wear and tear incident to
normal use and service.
PERFORMANCE TOOL® does not authorize any other person to make any warranty
or to assume any liability in connection with its products.
Except for warranties of title and the limited express warranties set forth above,
PERFORMANCE TOOL® makes no express or implied warranties of any kind with
respect to its products. In particular, PERFORMANCE TOOL® makes no implied
warranty of merchantability and no implied warranty of fitness for any particular
purpose, except that for goods purchased primarily for personal, family or household
use and not for commercial or business use, PERFORMANCE TOOL® makes an
implied warranty of merchantability (and, if otherwise applicable, an implied warranty of
fitness for a particular purpose), but only for the particular qualities or characteristics,
and for the duration, expressly warranted above. The laws on limitation of implied
warranties may differ from state to state, so the above limitations may not apply in all
cases.
PERFORMANCE TOOL® shall not be liable for consequential, incidental or special
damages resulting from or in any manner related to any product, or to the design, use,
or any inability to use the product. The sole and exclusive remedy for a defective
product or part shall be the repair, or replacement thereof as provided above. The laws
on limitation of remedies or on consequential, incidental or special damages may vary
from state to state, so the above limitations may not apply in all cases.
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