Harbor Freight Tools Grinder 94076 User Manual

ROTARY TOOL SET  
WITH 30 ACCESSORIES  
MODEL 94076  
ASSEMBLY AND OPERATING  
INSTRUCTIONS  
®
3491 Mission Oaks Blvd., Camarillo, CA 93011  
©
®
Copyright 2005 by Harbor FreightTools . 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.  
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13. Stay alert. Watch what you are doing, use common sense. Do not operate any tool when you are tired.  
14. Take caution as some woods contain preservatives such as copper chromium arsenate (CCA) which  
can be toxic.When cutting these materials extra care should be taken to avoid inhalation and minimize skin  
contact.  
15. Check for damaged parts. Before using any tool, any part that appears damaged should be carefully  
checked to determine that it will operate properly and perform its intended function. Check for alignment and  
binding of moving parts;any broken parts or mounting fixtures;and any other condition that may affect proper  
operation.Any part that is damaged should be properly repaired or replaced by a qualified technician.Do not  
use the tool if any switch does not turn On and Off properly.  
16. Guard against electric shock. Prevent body contact with grounded surfaces such as pipes, radiators,  
ranges, and refrigerator enclosures.  
17. Replacement parts and accessories. When servicing, use only identical replacement parts. Use of any  
other parts will void the warranty. Only use accessories intended for use with this tool.Approved accessories  
are available from Harbor FreightTools.  
18. Do not operate tool if under the influence of alcohol or drugs. Read warning labels on prescriptions to  
determine if your judgment or reflexes are impaired while taking drugs. If there is any doubt, do not operate the  
tool.  
19. Use proper size and type extension cord. If an extension cord is required, it must be of the proper size and  
type to supply the correct current to the tool without heating up. Otherwise, the extension cord could melt and  
catch fire, or cause electrical damage to the tool.This tool requires use of an extension cord of 0 to 10 amps  
capability (up to 50 feet), with wire size rated at 18 AWG. Longer extension cords require larger size wire. If  
you are using the tool outdoors, use an extension cord rated for outdoor use (signified by “WAon the jacket).  
20. Maintenance. For your safety, maintenance should be performed regularly by a qualified technician.  
Note: Performance of this tool (if powered by line voltage) may vary depending on variations in local line  
voltage. Extension cord usage may also affect tool performance.  
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.  
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  
(California Health & Safety Code § 25249.5, et seq. )  
Warning:The brass components of this product contain lead, a chemical known to the State of California to cause  
birth defects (or other reproductive harm).  
(California Health & Safety Code § 25249.5, et seq.)  
Warning: Exposure to aluminum oxide (a dust generated from material removing processes) can result in eye,  
skin and breathing irritation. Always use a NIOSH (National Institute for Occupational Safety and Health) approved  
respirator and safety goggles. Avoid skin exposure. Proper ventilation in the work area is required.  
Additional RotaryTool SafetyWarnings.  
1. Make sure accessories are rated for the speed recommended for this tool.  
2. Securely clamp workpiece as the Rotary Tool spins at very high RPM rates. Never hold a workpiece in your  
hands.  
3. Always disconnect the DC power source before changing accessories.  
4. Do not grind or sand near flammable materials.  
5. After use, do not touch the bit or collet until the tool has had enough time to cool off.  
For technical questions, please call 1-800-444-3353.  
SKU 94076  
Page 3  
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6. If the bit or accessory bogs down or becomes jammed, make sure to turn off the switch and unplug from the  
power source before clearing the bit or accessory.  
7. Always feed the accessory or bit in the proper direction. Feed in the direction that the cutting edge is exiting  
the workpiece (that is the same direction chips are thrown).  
8. Always bring the tool up to speed before contacting the material.  
9. Make sure there are no foreign objects, such as nails, in your workpiece.  
10. Don’t use dull or damaged bits. Dull or damaged bits may break off and cause serious injury. Replacement  
accessories are available at Harbor FreightTools.  
11. After changing bits or accessories, make sure the collet is securely fastened.  
12. Any accessory used with this tool must be rated at 16,250 RPM or greater.  
Unpacking  
When unpacking, check to make sure the parts listed on page 6 and 8 are included. If any parts are missing  
or broken, please call Harbor Freight Tools at the number on the cover of this manual as soon as possible.  
Operation  
Note: Always disconnect the tool from the power adapter while loading, unloading, or adjusting accessories.  
1. Choose the appropriate Collet (7) for the shank of the accessory you are using.  
2. Just above the collet shaft on the end of the tool, there is a shaft lock button. Depress that button to lock the  
shaft so that you can open the Collet (7).  
3. Remove the Collet Nut (6) on the tip of the tool and add the appropriate Collet (7). Put the bit or accessory  
you want in the Collet (7). Continue to depress the shaft lock button while tightening the Collet Nut (6).  
4. Make certain that the power switch is in the off (O) position. Plug the Adapter (13) into a properly grounded,  
120VAC outlet. Connect the plug from the RotaryTool (1) to the connector on the end of the adapter’s cord.  
5. Hold the tool firmly in one hand. Turn the toggle switch on ( I ) and wait until the tool reaches full speed before  
contacting the workpiece.  
6. When finished, turn off (O) the toggle switch and unplug the unit.  
OperationalTips.  
1. When you turn on the tool, hold it a safe distance in a direction away from your face.  
2. Practice on scrap material while getting use to the feel of the tool.  
3. Never lean on the tool. Allow the speed of the tool to do the work for you. Lightly contact the material. It is  
better to make several passes on a workpiece than to try to remove a lot of material in one pass. A gentle  
touch works best. If you feel the job is not getting done, change to a more powerful cutter.  
4. Plastics and similar materials will melt when contacted with high speed accessories. Start very slowly and  
monitor the material carefully.  
5. Follow all warnings and safety precautions and operational warnings as outlined in this manual completely.  
AccessoryTips. (Some of the many uses.)  
1. Mandrels are the shanks with a threaded or screw head. They are required when you use the cutoff wheels,  
polishing wheels, and sanding discs. The mandrel without the nut on the end is for the felt polishing wheels.  
For cutoff wheels and sanding discs, remove the nut on the end of the mandrel, add the wheel or disc, and  
replace the nut.  
2. Cutters are used for cutting, carving and slotting materials.  
3. Grinding Stones are used for sharpening cutting tools, screwdrivers etc. They can also be used to deburr  
any metal after the cutting process. Also, they can be used to remove excess glaze on ceramics.  
4. Cutting Wheels are used for slicing or cutting off bolt heads, nuts, etc.  
5. Wire Brushes clean silverware, jewelry, and antiques.  
For technical questions, please call 1-800-444-3353.  
SKU 94076  
Page 4  
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6. Sanding accessories can be used on a variety of workpieces, ranging from models to fine furniture.  
7. Polishing accessories bring metal surfaces to a smooth finish.  
Parts List  
Part  
Description  
Qty.  
Maintenance  
Note: Always disconnect the power adapter from the electrical outlet before attempting any maintenance.  
1. While wearing safety goggles and a full face shield, use compressed air to clean out the tool’s vents.  
2. Clean the collet shaft of any dirt or debris.  
3. Wipe the tool down with a soft cloth. Do not use any solvents to clean the tool as they will permanently  
damage the tool.  
4. If the Rotary Tool begins to work less efficiently, or slow down, have the internal brushes replaced by an  
qualified technician.  
PLEASE READTHE FOLLOWING CAREFULLY  
THE MANUFACTURER AND/OR DISTRIBUTOR HAS PROVIDEDTHE PARTS DIAGRAM INTHIS MANUAL  
AS A REFERENCE TOOL ONLY. NEITHER THE MANUFACTURER NOR DISTRIBUTOR MAKES ANY  
REPRESENTATION OR WARRANTY OF ANY KIND TO THE BUYER THAT HE OR SHE IS QUALIFIED TO  
MAKE ANY REPAIRS TO THE PRODUCT OR THAT HE OR SHE IS QUALIFIED TO REPLACE ANY PARTS  
OFTHE PRODUCT. IN FACT, THE MANUFACTURER AND/OR DISTRIBUTOR EXPRESSLY STATESTHAT  
ALL REPAIRS AND PARTS REPLACEMENTS SHOULD BE UNDERTAKEN BY CERTIFIED AND LICENSED  
TECHNICIANS AND NOT BY THE BUYER. THE BUYER ASSUMES ALL RISK AND LIABILITY ARISING  
OUT OF HIS OR HER REPAIRS TO THE ORIGINAL PRODUCT OR REPLACEMENT PARTS THERETO,  
OR ARISING OUT OF HIS OR HER INSTALLATION OF REPLACEMENT PARTSTHERETO.  
NOTE: Some parts are listed and shown for illustration purposes only and are not available indi-  
vidually as replacement parts.  
For technical questions, please call 1-800-444-3353.  
SKU 94076  
Page 5  
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Assembly Diagram  
For technical questions, please call 1-800-444-3353.  
SKU 94076  
Page 6  
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Accessory List  
Part  
A
Description  
Rotary Tool  
B(7)  
C
Brass Collet Set  
1
Diamond Burr Set ( / ” Shank)  
8
3
Mounted Stone Set ( / ” Shank)  
D
32  
1
Sanding Drum Set ( / ” Shank)  
E
8
1
Cut Off Wheel Set ( / ” Shank)  
F
8
1
Buffing Wheel Set ( / ” Shank)  
G
H
8
3
Wire Wheel Set ( / ” & / ” Shanks)  
1
32  
8
I
Grinding Stone  
3
1
J
Drill Bit Set ( / ", / " dia.)  
64  
3
8
K
Carbide Burr ( / ” Shank)  
32  
L
Case  
M(13) AC Adapter  
Accessory Illustration  
Note: To use the cutoff wheels and polishing wheels, see Accessory Tips on page 5.  
REV 10/06  
Page 7  
For technical questions, please call 1-800-444-3353.  
SKU 94076  
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WARRANTY  
LIMITED  
90 DAY/1YEAR  
WARRANTY  
Harbor FreightTools Co.makes every effort to assure that its products meet high quality and durability standards,  
and warrants to the original purchaser for a period of ninety days from date of purchase that the motor, the belts  
(if so equipped), and the blades (if so equipped) are free of defects in materials and workmanship.Harbor Freight  
Tools also warrants to the original purchaser, for a period of one year from date of purchase, that all other parts  
and components of the product are free from defects in materials and workmanship.This warranty does not apply  
to damage due directly or indirectly to misuse, abuse, negligence or accidents; repairs or alterations outside our  
facilities; or to lack of maintenance.We shall in no event be liable for death, injuries to persons or property, or for  
incidental, contingent, special or consequential damages arising from the use of our product. Some states do  
not allow the exclusion or limitation of incidental or consequential damages, so the above limitation of exclusion  
may not apply to you. THIS WARRANTY IS EXPRESSLY IN LIEU OF ALL OTHER WARRANTIES, EXPRESS  
OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS.  
To take advantage of this warranty, the product or part must be returned to us with transportation charges prepaid.  
Proof of purchase date and an explanation of the complaint must accompany the merchandise. If our inspection  
verifies the defect, we will either repair or replace the product at our election or we may elect to refund the purchase  
price if we cannot readily and quickly provide you with a replacement. We will return repaired products at our  
expense, but if we determine there is no defect, or that the defect resulted from causes not within the scope of  
our warranty, then you must bear the cost of returning the product.  
This warranty gives you specific legal rights and you may also have other rights which vary from state to state.  
3491 Mission Oaks Blvd. • PO Box 6009 • Camarillo, CA 93011 • (800) 444-3353  
REV 10/06  
For technical questions, please call 1-800-444-3353.  
SKU 94076  
Page 8  
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