Harbor Freight Tools Grinder 43533 User Manual

3-INCH MULTIPURPOSE  
BENCH GRINDER  
Model 43533  
SET UP AND OPERATING INSTRUCTIONS  
Read this material before using this product.  
Failure to do so can result in serious injury.  
SAVE THIS MANUAL.  
Copyright© 2000 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. Diagrams within this manual may not be drawn proportionally.  
Due to continuing improvements, actual product may differ slightly from the product described  
herein. Tools required for assembly and service may not be included.  
For technical questions or replacement parts, please call 1-800-444-3353.  
Manual Revised 10c  
 
12. Check for damaged parts. Before  
using any tool, any part that appears  
damaged should be carefully checked  
to determine that it will operate prop-  
erly and perform its intended function.  
Check for alignment and binding of  
moving parts; any broken parts or  
mounting fixtures; and any other con-  
dition that may affect proper opera-  
tion. 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.  
chromium arsenate (CCA) which  
can be toxic. When cutting these  
materials extra care should be taken  
to avoid inhalation and minimize skin  
contact.  
17. Maintenance. Service/maintenance  
should be done by a qualified techni-  
cian.  
18. People with pacemakers should  
consult their physician(s) before  
use. Electromagnetic fields in close  
proximity to heart pacemaker could  
cause pacemaker interference or  
pacemaker failure.  
13. Replacement parts and accesso-  
ries. When servicing, use only identi-  
cal 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 Freight Tools.  
19. When grinding any metals, the grinder  
can produce sparks which may land  
on your clothing, or hit your face.  
You should use a full face mask and  
appropriate protective clothing. Also  
ensure that you are not operating the  
grinder around flammable materials or  
liquids. Always make sure the safety  
shields and wheel guards are in place  
at all times.  
14. 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.  
20. Make sure grinding wheels are of  
proper speed (RPM) rating for grinder.  
21. Frequently quench the workpiece  
in water to prevent overheating; be  
careful not to get water on the bench  
grinder.  
15. 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 exten-  
sion cords require larger size wire. If  
you are using the tool outdoors, use  
an extension cord rated for outdoor  
22. Use the tool rest to steady the work  
piece. If the tool rest is not used, the  
torque of the spinning grinding wheel  
may pull the workpiece from your  
hands.  
23. Do not use aluminum oxide wheels  
when grinding nonferrous metals such  
as aluminum and brass. Use silicon  
carbide wheels for nonferrous metals.  
use (signified by “WA” on the jacket). 24. When buffing material, hold material  
on lower side of buffing wheel. Keep  
fingers clear of grinding wheel and  
tool rest.  
16. Take caution as some woods con-  
tain preservatives such as copper  
SKU 43533  
For technical questions, please call 1-800-444-3353.  
Page 3  
 
25. WARNING: Some dust created by  
power sanding, sawing, grinding, drill-  
ing, and other construction activities,  
contains chemicals known [to the  
State of California] to cause cancer,  
birth defects or other reproductive  
harm. Some examples of these  
chemicals are:  
UNPACKING  
When unpacking, check to make sure  
the following parts are included.  
1)3-inch Bench Grinder  
2)31-inch Flex Shaft  
3)Wrench  
4)3-inch Grinder Stone  
5)3-inch Fiber Wheel  
6)1/8 inch Mounting Stone Bit  
• Lead from lead-based paints  
• Crystalline silica from bricks and ce-  
ment or other masonry products  
• Arsenic and chromium from chemi-  
cally treated lumber  
Your risk from these exposures var-  
ies, 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.  
If any parts are missing or broken, please  
call Harbor Freight Tools at the number on  
the cover of this manual.  
(California Health & Safety Code §  
25249.5, et seq.)  
26. WARNING: Handling the cord on  
this product will expose you to lead,  
a chemical known to the State of  
California to cause cancer, and birth  
defects or other reproductive harm.  
Wash hands after handling.  
(California Health & Safety Code §  
25249.5, et seq.)  
27. The warnings, cautions, and instruc-  
tions discussed in this instruction  
manual cannot cover all possible con-  
ditions 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 07g;08j  
SKU 43533  
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Page 4  
 
Grinding with the Grinding  
Wheel  
OPERATION  
Turning the Bench Grinder ON  
and OFF  
WARNING: The grinding wheel can fly  
apart and cause injury.  
Grinding wheels must always be  
checked for cracks or imperfections.  
This is done with the “ring test”. Tap  
the wheel gently near the outer rim  
with the handle of a screwdriver. You  
should hear a clear bell-like ring. If  
a dull thud occurs, do not use the  
wheel. The wheel may be damaged  
and could come apart during opera-  
tion.  
Speed Control and  
On/Off Knob (31)  
1. Bring the workpiece into the wheel  
gently, without jarring.  
1. Insert the Plug (36) into an electrical  
outlet.  
2. When grinding high speed steels  
such as drill and tool bits, avoid high  
temperature buildup as this can affect  
the temper of the steel.  
2. Turn the speed control Knob (31)  
clockwise to turn the motor ON and  
adjust its speed.  
3. To turn OFF, turn the Knob counter-  
clockwise until it clicks.  
3. For small workpieces such as drill  
bits or chisels, avoid applying pres-  
sure to the wheel at a high angle that  
could cause the workpiece to become  
lodged between the tool rest and the  
wheel.  
4. Do not leave the bench grinder run-  
ning unattended. Turn off the tool  
when not in use.  
SKU 43533  
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Page 5  
 
Grinding with the Flex Shaft  
MAINTENANCE  
Dressing the Grinding Wheel  
Wheel Cover (14)  
Note: New wheels frequently are not  
true and during operation will often  
become grooved, glazed (build up),  
out of round, or misshapen. You will  
need a grinding wheel dresser for  
this operation. Dressers are available  
from Harbor Freight Tools.  
(37)  
1. Stand to the side of the wheel for this  
operation.  
Flex Shaft (32)  
2. If the wheel is new let it run for a  
minute with no load. If the wheel  
runs straight and true, you will not  
need to dress it prior to operation. If  
it does not, proceed with the following  
instructions.  
1. Secure the Flex Shaft (32) to the  
Wheel Cover (14). Align and insert  
the shaft. It can only go in one way.  
2. Tighten the Flex Shaft Connector Nut  
(37) over the Wheel Cover.  
3. Slip off the Chuck Cover (49).  
3. If you are using a “pistol grip” dresser,  
grip the handle firmly with one hand  
and the arm of the dresser with the  
other. Allow the wheel to reach full  
speed. Use the tool rest to support  
your hand and the dresser, and even-  
ly apply the dresser to all surfaces of  
the wheel. The wheel can be dressed  
in a few minutes.  
4. Loosen the Fixing Nut (47) with the  
Wrench (50).  
5. Insert the Mounted Stone Bit (48) into  
the Chuck (46) and tighten Fixing Nut.  
6. Slip the Chuck Cover (49) over the  
Chuck assembly.  
7. Grasp the Flex Shaft handle with one  
hand, and turn the Grinder ON with  
the other hand.  
4. If you are using an “inline” dresser,  
hold the handle firmly, put the dresser  
on the tool rest so that its wheels can  
move freely (i.e., the exposed part of  
the wheel should be facing up). Let  
the wheel reach full speed and apply  
the dresser evenly to all surfaces.  
CAUTION: Wear ANSI-approved safety  
glasses when grinding.  
8. When finished, turn the Grinder OFF  
and wait for it to stop before setting  
down the Flex Shaft.  
Mounted Stone Bit (48)  
Chuck Cover (49)  
Chuck (46)  
Flex Shaft (32)  
Wrench (50)  
Fixing Nut (47)  
SKU 43533  
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Page 6  
 
PARTS LIST  
Part  
1
2
3
4
5
6
7
8
Description  
Left-handed Nut  
Polishing Wheel  
Wheel Pushing Ring  
Washer  
Bearing  
Snap Ring  
Rotor  
Q’ty Part  
Description  
Q’ty Part  
Description  
35 Spring  
36 Plug  
Q’ty  
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
4
2
1
2
1
1
1
1
1
1
1
1
6
2
1
18 Clamp  
19 Stator  
20 Clamp  
1
1
2
2
1
2
2
2
2
1
1
1
1
1
1
1
1
37 Shaft Connector Nut  
38 Tool Rest  
39 Flex Shaft Hose  
40 Spring  
41 Chuck Cover  
42 Bearing  
43 Washer  
44 Bearing  
45 Spindle  
46 Chuck  
21 Wire Cover  
22 Brush Holder  
23 Wire Cover  
24 Brush Screw  
25 Brush Spring  
26 Brush  
27 Motor Housing  
28 Wheel Cover  
29 Circuit Board  
30 Base Holder  
31 Knob  
Armature  
Fan  
9
10 Bearing  
11 Sanding Wheel  
12 Right Nut  
13 Shaft Mounting Nut  
14 Wheel Cover  
15 Nut  
47 Fixing Nut  
48 Mounted Stone Bit  
49 Chuck Cover  
50 Wrench  
32 Flex Shaft  
33 Adaptor  
34 Cord  
16 Bolt  
17 Wheel Cover  
51 Plastic Safety Lens  
1
ASSEMBLy DRAWING  
11  
12 13  
1
2
3
4
5
6
7
8
9
10  
18  
19  
14  
15  
17 16  
21 20  
23 22  
24  
26 25  
27  
28  
29  
39  
38  
51  
37  
35 36  
34  
33  
31 32  
45  
40  
41  
30  
49  
42  
43  
44  
46  
47  
48  
REV 10c  
Page 7  
SKU 43533  
For technical questions, please call 1-800-444-3353.  
 
PLEASE READ THE FOLLOWING CAREFULLy  
THE MANUFACTURER AND/OR DISTRIBUTOR HAS PROVIDED THE PARTS LIST  
AND ASSEMBLY DIAGRAM IN THIS MANUAL AS A REFERENCE TOOL ONLY. NEI-  
THER THE MANUFACTURER OR 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 OF THE PRODUCT. IN FACT, THE MANUFACTURER  
AND/OR DISTRIBUTOR ExPRESSLY STATES THAT 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 INSTAL-  
LATION OF REPLACEMENT PARTS THERETO.  
Record Product’s Serial Number Here:  
Note: If product has no serial number, record month and year of purchase instead.  
Note: Some parts are listed and shown for illustration purposes only, and are not avail-  
able individually as replacement parts.  
LIMITED 90 DAy WARRANTy  
Harbor Freight Tools Co. makes every effort to assure that its products meet  
high quality and durability standards, and warrants to the original purchaser that this  
product is free from defects in materials and workmanship for the period of 90 days  
from the date of purchase. This warranty does not apply to damage due directly or  
indirectly, to misuse, abuse, negligence or accidents, repairs or alterations outside  
our facilities, criminal activity, improper installation, normal wear and tear, 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 con-  
sequential 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 08j  
SKU 43533  
For technical questions, please call 1-800-444-3353.  
Page 8  
 

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