Harbor Freight Tools Grinder 92683 User Manual

Wet Stone Grinder  
92683  
ASSEMBLY AND OPERATING INSTRUCTIONS  
3491 Mission Oaks Blvd., Camarillo, CA 93011  
Copyright © 2005 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  
 
8. Do not abuse the Power Cord. Never use the Power Cord to carry the tool 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. 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 ANSI-approved eye protection, full face shield, and work  
gloves when using this grinder. Dust mask, non-skid safety shoes, hard hat, or hearing protection  
must be used for appropriate conditions.  
Tool Use and Care  
16. Be sure the sharpener is used only on a stable platform. Be sure to use the blade guide, and  
wear safety glasses at all times when using this tool.  
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.  
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, keeping them adjusted and clean. Properly maintained tools 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 condi-  
tion that may affect the tool’s operation. If damaged, have the tool serviced before using.  
Many accidents are caused by poorly maintained tools.  
SKU 92683  
For technical questions, please call 1-800-444-3353  
Page 3  
 
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. Use of unauthorized parts or failure  
to follow maintenance instructions may create a risk of electric shock or injury.  
Specific Safety Rules  
1. Maintain labels and nameplates on the tool. These carry important information. If unreadable or  
missing, contact Harbor Freight Tools for a replacement.  
2. Always wear ANSI approved safety impact eye goggles when using the tool. Using personal  
safety devices reduce the risk for injury. Safety impact eye goggles and other safety equipment are  
available from Harbor Freight Tools.  
3. 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.  
4. Make sure to read and understand all instructions and safety precautions as outlined in the  
manufacturer’s manual.  
5. When starting this power tool, always ensure that it remains in place on a stable work platform.  
6. Always keep the extension cord away from moving parts on the tool.  
7. Avoid unintentional starting. Make sure you are prepared to begin work before turning on the tool.  
8. Do not force the tool. This tool will do the work better and safer at the speed and capacity for which  
it was designed.  
9. Never walk away from the tool until the motor has come to a complete stop. The tool may cre-  
ate unforeseen risk while the motor cycles down.  
10. Never leave the tool unattended when it is plugged into an electrical outlet. Turn off the tool,  
and unplug it from its electrical outlet before leaving.  
11. Always unplug the tool from its electrical outlet before performing any inspection, mainte-  
nance, or cleaning procedures.  
12. 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, crystal-  
line 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 ap-  
proved safety equipment, such as those dust masks that are specially designed to filter out micro-  
scopic particles. (California Health & Safety Code 25249.5, et seq.)  
13. WARNING! People with pacemakers should consult their physician(s) before using this product.  
Electromagnetic fields in close proximity to a heart pacemaker could cause interference to or failure  
of the pacemaker.  
SKU 92683  
For technical questions, please call 1-800-444-3353  
Page 4  
 
GROUNDING  
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.  
GROUNDED TOOLS:TOOLS WITH THREE PRONG PLUGS  
1. Tools marked with “Grounding Required” have a three wire cord and three prong grounding 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, reduc-  
ing 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 appropriate 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.)  
Figure A  
DOUBLE INSULATED TOOLS:TOOLS WITH TWO PRONG PLUGS  
4.  
Tools marked “Double Insulated” do not require ground-  
ing. They have a special double insulation system which satisfies  
OSHA requirements and complies with the applicable standards  
of Underwriters Laboratories, Inc., the Canadian Standard As-  
sociation, and the National Electrical Code. (See Figure B.)  
5.  
Double insulated tools may be used in either of the 120  
volt outlets shown in the following illustration. (See Figure B.)  
Figure B  
NOTE: The 92683 Wet Stone Grinder uses a non-polarized two-prong plug.  
SKU 92683  
For technical questions, please call 1-800-444-3353  
Page 5  
 
EXTENSION CORDS  
1. Grounded tools require a three wire extension cord. Double Insulated tools can use either a two or  
three wire extension cord.  
2. As the distance from the supply outlet increases, you must use a heavier gauge extension cord. Us-  
ing extension cords with inadequately sized wire causes a serious drop in voltage, resulting in loss of  
power and possible tool damage. (See Figure C.)  
3. The smaller the gauge number of the wire, the greater the capacity of the cord. For example, a 14  
gauge cord can carry a higher current than a 16 gauge cord. (See Figure C.)  
4. When using more than one extension cord to make up the total length, make sure each cord con-  
tains at least the minimum wire size required. (See Figure C.)  
5. If you are using one extension cord for more than one tool, add the nameplate amperes and use the  
sum to determine the required minimum cord size. (See Figure C.)  
6. If you are using an extension cord outdoors, make sure it is marked with the suffix “W-A” (“W” in  
Canada) to indicate it is acceptable for outdoor use.  
7. Make sure your extension cord is properly wired and in good electrical condition. Always replace a  
damaged extension cord or have it repaired by a qualified electrician before using it.  
8. Protect your extension cords from sharp objects, excessive heat, and damp or wet areas.  
RECOMMENDED MINIMUM WIRE GAUGE FOR EXTENSION CORDS*  
(120 OR 240 VOLT)  
NAMEPLATE  
EXTENSION CORD LENGTH  
AMPERES  
(At Full Load)  
25 Feet  
50 Feet  
75 Feet 100 Feet 150 Feet  
0 – 2.0  
18  
18  
18  
18  
18  
14  
12  
18  
18  
18  
16  
14  
12  
10  
18  
18  
16  
14  
12  
10  
-
18  
16  
14  
12  
10  
-
16  
14  
12  
12  
-
2.1 – 3.4  
3.5 – 5.0  
5.1 – 7.0  
7.1 – 12.0  
12.1 – 16.0  
16.1 – 20.0  
-
-
-
* Based on limiting the line voltage drop to five volts at  
150% of the rated amperes.  
FIGURE C  
SYMBOLOGY  
Double Insulated  
Canadian Standards  
Volts Alternating Current  
V~  
A
Amperes  
Association  
No Load Revolutions per Minute  
(RPM)  
Underwriters Laboratories, Inc.  
n xxxx/min.  
0
SKU 92683  
For technical questions, please call 1-800-444-3353  
Page 6  
 
Unpacking  
When unpacking, check to make sure the following parts are included.  
Grinder Unit with Grinding Wheel, and Angle Guide  
If any parts are missing or broken, please call Harbor Freight Tools at the number on the cover of this  
manual.  
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.)  
Operation  
Preliminary Safety Check:  
Before starting the grinder, with the power cord unplugged, and the Power Switch turned to the OFF  
(“O”) position, check to ensure:  
a) The safety shield is in place and properly adjusted.  
b) The grinding stone can be revolved freely by hand.  
c) The Tool Rest is in place, adjusted to within 3mm of the face of the grinding stone, and firmly  
tightened in place.  
Basic Operation:  
1) With the power cord unplugged, and the Power Switch (6) turned OFF,  
fill the water container 1/2 full.  
2) Adjust the Tool Rest (31) to the desired angle. (See Tool Rest  
Adjustment section on next page.)  
3) Plug into an appropriate, circuit breaker protected 110/120 volt DC power outlet.  
4) Press the Power Switch (6) to either “ 1” (forward) or ” 1” (reverse) positions, as required.  
5) Allow the machine to run up to speed, and stay there for at least 30 seconds before beginning work.  
If the grinder does not run smoothly, refer to the section on page 8 on Grinding Wheel care. Be sure  
the Grinding Wheel is properly dressed and balanced before beginning work. Be sure the Grinding  
Wheel is running at full speed before beginning work.  
6) Feed the workpiece smoothly into the Grinding Wheel (22). Do not apply heavy pressure or bump  
the workpiece against the Grinding Wheel. Apply light pressure on the work piece. Try to allow the  
Grinding Wheel to continue to turn at full speed as you work.  
WARNING: Do not use this grinder over 30 minutes each hour, or longer than 20 minutes  
continuously.This will help prevent overheating of the grinder, and extend grinder life.  
7) When done sharpening, move the Power Switch (6) to the OFF position. Allow the Grinding Wheel  
to come to a stop on its own. Do not manually stop the Grinding Wheel by grabbing it or holding an  
object against it. Stopping the Grinding Wheel causes stress and possible damage to the gears and  
belts.  
SKU 92683  
For technical questions, please call 1-800-444-3353  
Page 7  
 
Using the Angle Guide to adjust the Tool Rest angle  
You can use the angle guide to adjust the Tool Rest (31) to best sharpen your tools.  
1) Determine the best sharpening angle for your tool. The included  
angle guide has several useful angles for sharpening knives,  
chisels and other hand tools.  
Angle Guide  
2) To adjust the tool rest’s position, the unit has two Tool Rest  
Adjusters (34). The bottom one adjusts the arm’s angle, and the  
top adjusts the rest’s angle. The adjusters have two positions: In  
the normal position, they adjust the tightness of the joint. If they  
are pulled out, they can turn freely to go to the beginning of the  
turn. They are spring loaded, so they automatically return to the  
first position.  
Tool Rest (31)  
3) Place the Grinding Guide on the Grinding Wheel as shown in the  
photo, using the selected grinding angle.  
Tool Rest Adjusters (34)  
4) Adjust the Tool Rest (31) vertically, then push it forward against  
the Grinding Guide. The edge of the Tool Rest (31) should be  
within 1/16” of the grinding wheel.  
5) Tighten the Tool Rest Adjusters (34) To x the Tool Rest in place. The adjusters should not be over  
tightened, as they will break.  
Effective Sharpening  
1) For best results, the Grinding Wheel should be turning toward the blade.  
2) Hold the blade flat against the Tool Rest (31), and move it lightly against the Grinding Wheel (22)  
as you move it from one side to the other. Reverse the blade, and move it again lightly against  
the Grinding Wheel from side to side. Do not aggressively feed the blade into the Grinding Wheel.  
Repetitive light passes on each side of the blade will produce best results.  
3) After grinding the blade, use a burnisher, fine whetstone or knife steel (not included) to remove  
microscopic burrs from the blade edge.  
Maintenance  
Dressing the Grinding Wheel  
For best sharpening results, it is important to maintain the Grinding Stone in good condition. With  
use the Grinding Stone will wear, and may become out of round or uneven. Dressing the Grinding Wheel  
will restore its proper shape and roundness.  
The stone must be dry to dress it. Pour the water out of the Grinder, and allow time for the Grinding  
Wheel to thoroughly dry before dressing.  
To dress the Grinding Wheel, hold a dressing tool (available separately from Harbor Freight Tools) or  
a flat piece of hardened steel (not included) against the Grinding Wheel as it turns. It is important to hold  
this tool firmly, and supported by the Tool Rest as you are shaping the Grinding Wheel. Slowly feed the  
dressing tool or piece of steel into the Grinding Wheel, until the Grinding Wheel fully contacts the dressing  
tool. The Grinding Wheel should now be even and round. Observe the Grinding Wheel spinning freely for  
a few seconds to determine its condition. If necessary, continue to dress the wheel until it spins smoothly.  
SKU 92683  
For technical questions, please call 1-800-444-3353  
Page 8  
 
Changing the Grinding Wheel  
Eventually, the Grinding Wheel may require replacement. The Grinding Wheel should be replaced when  
it has lost approx. 25% of its diameter. Suitable Grinding Wheels are available from Harbor Freight Tools.  
1) Ensure that the replacement Grinding Wheel is no greater than 8” in Diameter nor 1.65” in Width. The  
bore must be designed to fit a 15/32” Spindle.  
Flange (21)  
2) Be sure the Grinder is unplugged and turned OFF.  
3) Pour the water out by tilting the grinder to the rear.  
Nuts (20)  
4) Remove the two outermost screws on each Bearing Block,  
and set the Bearing Blocks aside (as shown in the photo at  
right).  
Bearing Block  
Brass Bearing  
Oil Port  
5) Remove the Grinding  
Wheel assembly by lifting it  
straight up, as shown in the  
photo at left.  
6) Remove the Brass  
Bearing, V-ring (19), two  
Nuts (20), and Flange (21).  
You may now slide the old  
Grinding Wheel off the Axle  
(23). See photo on right.  
V-ring (19)  
Nuts (20)  
Flange (21)  
7) Install the new Grinding Wheel, and replace the Flange  
(21) and Nuts (20) as they were before. Do not over  
tighten the Nuts. The Grinding Wheel assembly should  
then be reassembled, the bearings and gear greased, and carefully put back in place so that the  
gear meshes properly and so that both v-rings sit nicely into the groove, creating a good seal.  
Replace the Bearing Blocks. When replacing the Bearing Blocks, attention should also be given  
to the v-rings to make sure that they are in place. Both Bearing Blocks should be tightened down  
enough to provide a good seal.  
8) Test the Grinder to ensure that the new Grinding Wheel runs smoothly. If it does not, try loosening  
the Nuts (20) and reposition the new Grinding Wheel on the Axle. If, after several tries, this does not  
solve the problem, tighten the Nuts and dress the wheel as discussed above.  
Periodic Maintenance  
1) Unplug the Grinder before cleaning or adjusting. Pour the water out by tilting the grinder to the rear.  
2) Once a year, place a small amount of lubricating oil in the oil ports on top of the bearing blocks on  
each side of the Grinding Wheel. The center screw above each bearing covers the oiling port. The  
screw is simply removed and several drops of oil are added periodically.  
3) When storing the Grinder, empty it of water, and cover to prevent dirt accumulation.  
SKU 92683  
For technical questions, please call 1-800-444-3353  
Page 9  
 
Parts List  
Part  
1
Description  
Part  
23  
24  
25  
26  
27  
28  
29  
30  
31  
32  
33  
34  
35  
36  
37  
38  
39  
40  
41  
42  
43  
Description  
Axle with Flange  
Power Cord  
2
Power Cord Support  
Screw m2, 9X9, 5  
Sleeve  
Base  
3
Screw m4 x 45  
Spring Washer m4  
Housing  
4
5
Cable  
6
Power Switch  
Power Switch Cover  
Flat Plug  
Toothed Belt Drive 35t  
C-clip 12mm  
Toothed Belt 110XL  
Tool Rest  
7
8
9
Motor 110 VAC  
Nut m8  
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
20  
21  
22  
Hand Grip m6  
Spring  
Screw m6 x 55  
Cog-Belt wheel 44t  
Nut m6  
Disk m6  
Aluminum Bar  
Cover m6 x 60  
Relief Clamp  
Condenser  
Toothed Belt 130XL  
Geared Motor Wheel  
Screw m4 x 14  
Retaining Plate for Motor  
Screw m4 x 6  
V-ring  
Small Cover  
Large Cover  
Axle Housing for Gear Wheel  
Screw m2, 9 x 19  
Screw m4 x 12  
Nut PG11  
Flange  
Grinding Wheel  
NOTE: Some parts are listed and shown for illustration purposes only and are not available individually as  
replacement parts.  
SKU 92683  
For technical questions, please call 1-800-444-3353  
Page 10  
 
Assembly Drawing  
PLEASE READ THE FOLLOWING CAREFULLY  
THE MANUFACTURER AND/OR DISTRIBUTOR HAS PROVIDED THE PARTS DIAGRAM IN THIS MANUAL AS A REFER-  
ENCE TOOL ONLY. NEITHER THE MANUFACTURER NOR DISTRIBUTOR MAKES ANY REPRESENTATION OR WAR-  
RANTY 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 LIABIL-  
ITY 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 PARTS THERETO.  
SKU 92683  
For technical questions, please call 1-800-444-3353  
Page 11  
 

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