Northern Industrial Tools 143379 User Manual
41/2"
ANGLE GRINDER
OPERATING MANUAL
Item # 143379
READ ALL INSTRUCTIONS BEFORE OPERATING
SAVE THESE INSTRUCTIONS
Before attempting to operate your new Angle Grinder please read these instructions
thoroughly. You will need these instructions for the safety warnings, precautions, assembly,
operation, maintenance procedures, parts list and diagrams.
WARNING: The warnings, cautions and instructions discussed in this instruction manual
cannot cover all possible conditions or situations that could 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.
TABLE OF CONTENTS
Description Page #
Warranty..............................................................1
Specifications......................................................1
Safety rules .......................................................1-2
Getting Started....................................................3
Assembly ............................................................3
Operating Your Grinder .......................................4
Tech Tips.............................................................4
Maintenance .......................................................5
Parts List and Diagram .......................................6
SPECIFICATIONS
Motor ......................................120V~ 60Hz – 8amp
No Load Speed....................................11,000 RPM
Weight..............................................................7 lbs
Overall Length .................................................16.5"
Spindle Thread..................................5/8" - 11 UNC
SAFETY RULES
WARNING: The double-insulated system is intended to protect the user from shock
resulting from a break in the tool's internal wiring. Observe all normal safety precautions related to avoiding electric shock.
1. Know your machine. Read this manual carefully. Learn the machine’s applications and
limitations, as well as specific potential hazards peculiar to it.
2. Ground all machines. This machine is “Double Insulated,” meaning that all outside metal
parts are insulated from electrical power. Double Insulated tools are equipped with a
polarized plug. 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 attempt to circumvent this safety feature.
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3. Do not expose tool to moisture. Don’t use this machinery in damp or wet locations. Keep
out of rain.
4. Keep work area clean. Cluttered areas invite injuries.
5. Keep children and pets away. All children should be kept away from the work area. Never
let a child handle a tool without strict adult supervision.
6. Do not operate this tool if under the influence of alcohol or drugs or if you are tired. Read
warning labels on prescriptions to determine if your judgment or reflexes are impaired
while taking drugs. If there is any doubt, do not attempt to operate.
7. Use safety equipment. Eye protection should be worn at all times when operating this
machine. Use ANSI approved safety glasses. Everyday eyeglasses only have impact
resistance lenses. They are NOT safety glasses. Dust mask, respirator, non-skid safety
shoes, hard hat, or hearing protection must be used in appropriate conditions.
8. Wear proper apparel. Loose clothing, gloves, neckties, rings, bracelets, or other jewelry
may present a potential hazard when operating this machine. Please keep all apparel
clear of the machine.
9. Don’t overreach. Keep proper footing and balance at all times when operating this product.
10. Always disconnect the machine from power source before servicing or changing accessories.
11. Check for damage. Check your tool regularly. If part of the tool is damaged it should be
carefully inspected to make sure it can perform its intended function correctly. If in doubt,
the part should be repaired. Refer all servicing to a qualified technician. Consult your
dealer for advice.
12. Keep away from flammables. Do not attempt to operate this tool near flammables or com-
bustibles. Failure to comply may cause serious injury or death.
13. Do not start tool while it is resting on materials. Always turn tool on BEFORE coming in
contact with material surface.
14. Do not set tool down until it has come to a complete stop.
15. Always check to make sure that trigger is not engaged before plugging tool in.
16. Keep hands clear of cutting edges and all moving parts.
17. Protect others in work area from debris such as chips and sparks. Provide barriers and
shields as needed.
18. Secure work. Use a clamp, vise or other practical means to hold your work securely,
freeing both hands to control the tool.
19. Use the right tool for the job. Do not use a tool or attachment to do a job for which it was
not intended. Do not alter a tool.
20. Use proper accessories. Using accessories not recommended may be hazardous. Be sure
accessories are properly installed and maintained. Do not defeat a guard or other safety
device when installing an accessory or attachment.
21. Remove all adjusting keys and wrenches. Make a habit of checking that adjusting keys,
wrenches, etc. are removed from the tool before turning it on.
22. Guard against electric shock. Prevent body contact with grounded surfaces such as
pipes, radiators, ranges, and refrigerators. Hold your tool by insulated, non-metal grasp-
ing surfaces. Use a Ground Fault Circuit Interrupter (GFCI) to reduce shock hazards.
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