Harbor Freight Tools 91222 User Manual

4” ANGLE GRINDER

91222

ASSEMBLY & OPERATING INSTRUCTIONS

3491 Mission Oaks Blvd., Camarillo, CA 93011

Visit our Web site at http://www.harborfreight.com

Copyright© 2004 by Harbor Freight Tools®. All rights reserved. No portion
of this manual or any artwork contained herein may be reproduced in any shape or
form without the express written consent of Harbor Freight Tools.

For technical questions and replacement parts, please call 1-800-444-3353

THANK YOU for choosing a HARBOR FREIGHT TOOLS product. For future reference, please complete the owner’s
record below:

Model_____________ Serial No.__________ Purchase Date___________

SAVE THE RECEIPT, WARRANTY AND THESE INSTRUCTIONS. It is important that you read the entire manual to
become familiar with the unit BEFORE you begin assembly.

Technical Specifications

Tool Name: 4” Angle Grinder
SKU: 91222

Motor: 120V/ 60Hz, Single Phase, 11,100 RPM
Cord Length: 8 FT. 2 Prong UL Approved
Spindle: 5/8” X 11 TPI with 7/8” Arbor
Grinding Wheel: 4” X 1/4” X 7/8”

5H92

E194601

GENERAL SAFETY RULES

WARNING!

READ AND UNDERSTAND ALL INSTRUCTIONS

Failure to follow all instructions listed below may result in

electric shock, fire, and/or serious injury.

SAVE THESE INSTRUCTIONS

WORK AREA

1. Keep your work area clean and well lit. Cluttered benches and dark areas invite accidents.

2. Do not operate power tools in explosive atmospheres, such as in the presence of
flammable liquids, gases, or dust. Power tools create sparks which may ignite the dust
or fumes.

3. Keep bystanders, children, and visitors away while operating a power tool. Distractions
can cause you to lose control. Protect others in the work area from debris such as chips
and sparks. Provide barriers or shields as needed.

ELECTRICAL SAFETY

4. Grounded tools must be plugged into an outlet properly installed and grounded in
accordance with all codes and ordinances. Never remove the grounding prong or
modify the plug in any way. Do not use any adapter plugs. Check with a qualified
electrician if you are in doubt as to whether the outlet is properly grounded. If the

tools should electrically malfunction or break down, grounding provides a low resistance
path to carry electricity away from the user.

5. Double insulated tools are equipped with a polarized plug (one blade is wider than

the other). This plug will fit in a polarized outlet only one way. If the plug does not fit
fully in the outlet, reverse the plug. If it still does not fit, contact a qualified electrician

to install a polarized outlet. Do not change the plug in any way. Double insulation

eliminates the need for the three wire grounded power cord and grounded power supply
system.

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6. Avoid body contact with grounded surfaces such as pipes, radiators, ranges, and
refrigerators. There is an increased risk of electric shock if your body is grounded.

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

8. Do not abuse the Power Cord. Never use the Power Cord to carry the tools or pull

the Plug from an outlet. Keep the Power Cord away from heat, oil, sharp edges, or
moving parts. Replace damaged Power Cords immediately. Damaged Power Cords

increase the risk of electric shock.

9. When operating a power tool outside, use an outdoor extension cord marked “W-A”
or “W”. These extension cords are rated for outdoor use, and reduce the risk of electric
shock.

PERSONAL SAFETY

10. Stay alert. Watch what you are doing, and use common sense when operating a
power tool. Do not use a power tool while tired or under the influence of drugs,
alcohol, or medication. A moment of inattention while operating power tools may result

in serious personal injury.

11. Dress properly. Do not wear loose clothing or jewelry. Contain long hair. Keep your
hair, clothing, and gloves away from moving parts. Loose clothes, jewelry, or long hair
can be caught in moving parts.

12. Avoid accidental starting. Be sure the Power Switch is off before plugging in. Carrying
power tools with your finger on the Power Switch, or plugging in power tools with the Power
Switch on, invites accidents.

13. Remove adjusting keys or wrenches before turning the power tool on. A wrench or a
key that is left attached to a rotating part of the power tool may result in personal injury.

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

15. Use safety equipment. Always wear eye protection. Dust mask, nonskid safety shoes,
hard hat, or hearing protection must be used for appropriate conditions.

TOOL USE AND CARE

16. Use clamps (not included) or other practical ways to secure and support the workpiece
to a stable platform. Holding the work by hand or against your body is unstable and may

lead to loss of control.

17. Do not force the tool. Use the correct tool for your application. The correct tool will do
the job better and safer at the rate for which it is designed.

18. Do not use the power tool if the Power Switch does not turn it on or off. Any tool that
cannot be controlled with the Power Switch is dangerous and must be replaced.

19. Disconnect the Power Cord Plug from the power source before making any
adjustments, changing accessories, or storing the tool. Such preventive safety
measures reduce the risk of starting the tool accidentally.

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20. Store idle tools out of reach of children and other untrained persons. Tools are
dangerous in the hands of untrained users.

21. Maintain tools with care. Keep cutting tools sharp and clean. Properly maintained
tools with a sharp cutting edge are less likely to bind and are easier to control. Do not use
a damaged tool. Tag damaged tools “Do not use” until repaired.

22. Check for misalignment or binding of moving parts, breakage of parts, and any other

condition that may affect the tool’s operation. If damaged, have the tool serviced
before using. Many accidents are caused by poorly maintained tools.

23. Use only accessories that are recommended by the manufacturer for your model.
Accessories that may be suitable for one tool may become hazardous when used on another
tool.

SERVICE

24. Tool service must be performed only by qualified repair personnel. Service or
maintenance performed by unqualified personnel could result in a risk of injury.

25. When servicing a tool, use only identical replacement parts. Follow instructions in

the

“Maintenance”

maintenance instructions may create a risk of electric shock or injury.

section of this manual. Use of unauthorized parts or failure to follow

SPECIFIC SAFETY RULES

1. Always use proper guard with grinding wheel. A guard protects the operator from broken
wheel fragments.

2. Accessories must be rated for at least the speed recommended on the tool warning

label.

3. Hold tool by insulated gripping surfaces when performing an operation where the
cutting tool may contact hidden wiring or its own cord. Contact with a “live” wire will
make exposed metal parts of the tool “live” and shock the operator.

4. Maintain labels and nameplates on the Grinder. These carry important information.
If unreadable or missing, contact Harbor Freight Tools for a replacement.

5. Always wear safety impact eye goggles and heavy work gloves when using this tool.
Using personal safety devices reduce the risk for injury. Safety impact eye goggles and
heavy work gloves are available from Harbor Freight Tools.

6. Maintain a safe working environment. Keep the work area well lit. Make sure there is
adequate surrounding workspace. Always keep the work area free of obstructions, grease,
oil, trash, and other debris. Do not use a power tool in areas near flammable chemicals,
dusts, and vapors. Do not use this product in a damp or wet location.

7. WARNING! All accessories for this tool must be rated for at least 12,000 RPM.
Grinding Wheels and other accessories running over the rated 12,000 RPM speed can fly
apart and cause injury.

8. When using a hand-held power tool, always maintain a firm grip on the tool with both

hands to resist starting torque.

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9. Use only 4” diameter Grinding Wheels (not included) having a 7/8” center mounting
hole. Never disable or modify the Wheel Guard.

10. Avoid unintentional starting. Make sure you are prepared to begin work before turning
on this tool.

11. Do not force this tool. This tool will do the work better and safer at the speed and capacity
for which it was designed. Do not force the rotating Grinding Wheel (not included) into the
object being ground. Apply moderate pressure, allowing the Grinding Wheel to rotate freely
without being forced.

12. WARNING! Never install a carbide tipped or steel circular saw blade for use on

this tool. Never install a wood carving blade, carving disc with saw chain cutters, or
a cutting carving disc on this tool.

13. For safest operation, it is recommended that only these accessories be used with
this tool: Abrasive Cut-Off Discs and Wheels, Flap Wheels, Wire Brushes, Wire Wheel
Brushes.

14. Never lay this tool down until the Rotating Grinding Wheel has come to a complete
stop. The Rotating Pad can grab the surface and pull the tool out of your control.

15. Never leave this tool unattended when it is plugged into an electrical outlet. Turn off
the tool, and unplug it from its electrical outlet before leaving.

16. Always unplug this tool from its electrical outlet before performing inspection,

maintenance, or cleaning procedures.

17. WARNING! Some dust created by power sanding, sawing, grinding, drilling, and other
construction activities, contain chemicals known (to the State of California) to cause cancer,
birth defects or other reproductive harm. Some examples of these chemicals are: lead
from lead-based paints, crystalline silica from bricks and cement or other masonry products,
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 filter out microscopic particles.

(California Health & Safety Code 25249.5, et seq.)

18. WARNING! People with pacemakers should consult their physician(s) before using
this product. Operation of electrical equipment in close proximity to a heart pacemaker
could cause interference or failure of the pacemaker.

Warning: The warnings, cautions and instructions discussed in this instruction manual

cannot cover all possible conditions and situations that may occur. It must
be understood by the operator that COMMON SENSE AND CAUTION ARE
FACTORS WHICH CANNOT BE BUILT INTO THIS PRODUCT, BUT MUST
BE SUPPLIED BY THE OPERATOR.

REV 02/07

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