Chicago Electric Grinder 69454 User Manual

Owner’s Manual & Safety Instructions  
Save This Manual Keep this manual for the safety warnings and precautions, assembly, operating,  
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near the assembly diagram (or month and year of purchase if product has no number). Keep this manual and  
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ITEM 69454  
7"  
anglE grIndEr  
Email our technical support at: [email protected]  
When unpacking, make sure that the product is intact  
and undamaged. If any parts are missing or broken,  
please call 1-800-444-3353 as soon as possible.  
©
®
Copyright 2012 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.  
Read this material before using this product.  
Failure to do so can result in serious injury.  
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Electrical safety  
1. power tool plugs must match the outlet.  
never modify the plug in any way.  
4. Do not abuse the cord. never use the cord  
for carrying, pulling or unplugging the power  
tool. Keep cord away from heat, oil, sharp  
edges or moving parts. Damaged or entangled  
cords increase the risk of electric shock.  
Do not use any adapter plugs with grounded  
power tools. Unmodified plugs and matching  
outlets will reduce risk of electric shock.  
2. avoid body contact with grounded surfaces  
such as pipes, radiators, ranges and  
5. When operating a power tool outdoors, use  
an extension cord suitable for outdoor use.  
Use of a cord suitable for outdoor use  
refrigerators. There is an increased risk of  
electric shock if your body is grounded.  
reduces the risk of electric shock.  
3. Do not expose power tools to rain or wet  
conditions. Water entering a power tool  
will increase the risk of electric shock.  
6. if operating a power tool in a damp location  
is unavoidable, use a Ground Fault Circuit  
interrupter (GFCi) protected supply.  
Use of a GFCI reduces the risk of electric shock.  
personal safety  
1. Stay alert, watch what you are doing and use  
common sense when operating a power tool.  
Do not use a power tool while you are tired  
or under the influence of drugs, alcohol or  
medication. A moment of inattention while operating  
power tools may result in serious personal injury.  
5. Do not overreach. Keep proper footing and  
balance at all times. This enables better control  
of the power tool in unexpected situations.  
6. Dress properly. Do not wear loose clothing or  
jewelry. Keep your hair, clothing and gloves  
away from moving parts. Loose clothes, jewelry  
or long hair can be caught in moving parts.  
2. use safety equipment. always wear eye  
protection. Safety equipment such as  
dust mask, non-skid safety shoes, hard hat,  
or hearing protection used for appropriate  
conditions will reduce personal injuries.  
7. if devices are provided for the connection of  
dust extraction and collection facilities, ensure  
these are connected and properly used. Use of  
these devices can reduce dust-related hazards.  
3. prevent unintentional starting. Ensure the  
switch is in the off-position before connecting  
to power source and/or battery pack, picking  
up or carrying the tool. Carrying power tools  
with your finger on the switch or energizing power  
tools that have the switch on invites accidents.  
8. Only use safety equipment that has been  
approved by an appropriate standards agency.  
Unapproved safety equipment may not provide  
adequate protection. Eye protection must  
be ANSI-approved and breathing  
protection must be NIOSH-approved for  
the specific hazards in the work area.  
4. Remove any adjusting key or wrench  
before turning the power tool on.  
A wrench or a key left attached to a rotating part  
of the power tool may result in personal injury.  
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power tool use and care  
1. Do not force the power tool. use the  
correct power tool for your application.  
The correct power tool will do the job better and  
safer at the rate for which it was designed.  
5. maintain power tools. Check for misalignment  
or binding of moving parts, breakage of parts  
and any other condition that may affect the  
power tool’s operation. if damaged, have the  
power tool repaired before use. Many accidents  
are caused by poorly maintained power tools.  
2. Do not use the power tool if the switch  
does not turn it on and off. Any power  
tool that cannot be controlled with the switch  
is dangerous and must be repaired.  
6. Keep cutting tools sharp and clean.  
Properly maintained cutting tools with sharp cutting  
edges are less likely to bind and are easier to control.  
3. Disconnect the plug from the power source  
and/or the battery pack from the power tool  
before making any adjustments, changing  
accessories, or storing power tools.  
7. use the power tool, accessories and tool bits  
etc. in accordance with these instructions,  
taking into account the working conditions  
and the work to be performed. Use of the  
power tool for operations different from those  
intended could result in a hazardous situation.  
Such preventive safety measures reduce the  
risk of starting the power tool accidentally.  
4. Store idle power tools out of the reach of  
children and do not allow persons unfamiliar  
with the power tool or these instructions  
to operate the power tool. Power tools are  
dangerous in the hands of untrained users.  
Service  
have your power tool serviced by a qualified repair person using only identical replacement parts.  
This will ensure that the safety of the power tool is maintained.  
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Safety Warnings Common for Grinding, Sanding, Wire Brushing,  
polishing, or abrasive Cutting-Off Operations  
1. this power tool is intended to function  
as a grinder, sander, wire brush, polisher  
or cut-off tool. Read all safety warnings,  
instructions, illustrations and specifications  
provided with this power tool.  
workpiece fragments. the eye protection must  
be capable of stopping flying debris generated  
by various operations. The eye protection must  
be capable of stopping flying debris generated by  
various operations. The dust mask or respirator  
must be capable of filtering out particles generated  
by your operation. Prolonged exposure to high  
intensity noise may cause hearing loss.  
Failure to follow all instructions listed below may  
result in electric shock, fire and/or serious injury.  
2. Do not use accessories which are not  
specifically designed and recommended  
by the tool manufacturer. Just because the  
accessory can be attached to your power tool,  
it does not assure safe operation.  
8. Keep bystanders a safe distance away from work  
area. anyone entering the work area must wear  
personal protective equipment. Fragments of  
workpiece or of a broken accessory may fly away and  
cause injury beyond immediate area of operation.  
3. the rated speed of the accessory must be at  
least equal to the maximum speed marked on  
the power tool. Accessories running faster than  
their RATED SPEED can break and fly apart.  
9. hold power tool by insulated gripping surfaces  
only, when performing an operation where  
the accessory may contact hidden wiring  
or its own cord. An accessory contacting a  
″live″ wire may make exposed metal parts of  
the power tool ″live″ and shock the operator.  
4. the outside diameter and the thickness of your  
accessory must be within the capacity rating  
of your power tool. Incorrectly sized accessories  
cannot be adequately guarded or controlled.  
10. position the cord clear of the spinning accessory.  
If you lose control, the cord may be cut or  
snagged and your hand or arm may be  
5. the arbor size of wheels, flanges, backing  
pads or any other accessory must properly  
fit the spindle of the power tool. Accessories  
with arbor holes that do not match the mounting  
hardware of the power tool will run out of balance,  
vibrate excessively and may cause loss of control.  
pulled into the spinning accessory.  
11. never lay the power tool down until the  
accessory has come to a complete stop.  
The spinning accessory may grab the surface  
and pull the power tool out of your control.  
6. Do not use a damaged accessory.  
Before each use inspect the accessory such  
as abrasive wheels for chips and cracks,  
backing pad for cracks, tear or excess wear,  
wire brush for loose or cracked wires. if power  
tool or accessory is dropped, inspect for  
damage or install an undamaged accessory.  
after inspecting and installing an accessory,  
position yourself and bystanders away from  
the plane of the rotating accessory and run  
the power tool at maximum no-load speed  
for one minute. Damaged accessories will  
normally break apart during this test time.  
12. Do not run the power tool while carrying  
it at your side. Accidental contact with the  
spinning accessory could snag your clothing,  
pulling the accessory into your body.  
13. Regularly clean the power tool’s air vents.  
The motor’s fan will draw the dust inside  
the housing and excessive accumulation of  
powdered metal may cause electrical hazards.  
14. Do not operate the power tool near flammable  
materials. Sparks could ignite these materials.  
15. Do not use accessories that require liquid  
coolants. Using water or other liquid coolants  
may result in electrocution or shock.  
7. Wear personal protective equipment. Depending  
on application, use face shield, safety goggles  
or safety glasses. as appropriate, wear dust  
mask, hearing protectors, gloves and workshop  
apron capable of stopping small abrasive or  
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16. Maintain labels and nameplates on the tool.  
These carry important safety information.  
If unreadable or missing, contact  
23. WARNING: Some dust created by power sanding,  
sawing, grinding, drilling, 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:  
Harbor Freight Tools for a replacement.  
17. Avoid unintentional starting.  
Prepare to begin work before turning on the tool.  
• Lead from lead-based paints  
• Crystalline silica from bricks and cement or  
other masonry products  
• Arsenic and chromium from  
18. Do not depress the spindle lock when  
starting or during operation.  
chemically treated lumber  
19. Do not 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.  
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.)  
20. 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 and personal injury.  
24. 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.)  
21. This product is not a toy.  
Keep it out of reach of children.  
22. 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.  
In addition, people with pacemakers should:  
• Avoid operating alone.  
25. The warnings, precautions, 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.  
• Do not use with power switch locked on.  
• Properly maintain and inspect  
to avoid electrical shock.  
• Properly ground power cord. Ground Fault Circuit  
Interrupter (GFCI) should also be implemented  
– it prevents sustained electrical shock.  
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Kickback and Related Warnings  
Kickback is a sudden reaction to a pinched or  
snagged rotating wheel, backing pad, brush  
or any other accessory. Pinching or snagging  
causes rapid stalling of the rotating accessory  
which in turn causes the uncontrolled power  
tool to be forced in the direction opposite of the  
accessory’s rotation at the point of the binding.  
2. never place your hand near the rotating  
accessory. Accessory may kickback over your hand.  
3. Do not position your body in the area where  
power tool will move if kickback occurs.  
Kickback will propel the tool in direction opposite to  
the wheel’s movement at the point of snagging.  
For example, if an abrasive wheel is snagged or  
pinched by the workpiece, the edge of the wheel  
that is entering into the pinch point can dig into the  
surface of the material causing the wheel to climb  
out or kick out. The wheel may either jump toward  
or away from the operator, depending on direction  
of the wheel’s movement at the point of pinching.  
Abrasive wheels may also break under these conditions.  
4. use special care when working corners, sharp  
edges etc. avoid bouncing and snagging the  
accessory. Corners, sharp edges or bouncing  
have a tendency to snag the rotating accessory  
and cause loss of control or kickback.  
5. Do not attach a saw chain woodcarving  
blade or toothed saw blade. Such blades  
create frequent kickback and loss of control.  
Kickback is the result of power tool misuse and/or  
incorrect operating procedures or conditions and can be  
avoided by taking proper precautions as given below.  
1. maintain a firm grip on the power tool and  
position your body and arm to allow you to  
resist kickback forces. always use auxiliary  
handle, if provided, for maximum control over  
kickback or torque reaction during start-up.  
The operator can control torque reactions or  
kickback forces, if proper precautions are taken.  
Safety Warnings Specific for Grinding and  
abrasive Cutting-off Operations  
1. use only wheel types that are recommended  
for your power tool and the specific  
4. always use undamaged wheel flanges that are of  
correct size and shape for your selected wheel.  
Proper wheel flanges support the wheel thus reducing  
the possibility of wheel breakage. Flanges for cut-off  
wheels may be different from grinding wheel flanges.  
guard designed for the selected wheel.  
Wheels for which the power tool was not designed  
cannot be adequately guarded and are unsafe.  
2. the guard must be securely attached  
to the power tool and positioned for  
5. Do not use worn down wheels from larger  
power tools. Wheel intended for larger  
power tool is not suitable for the higher  
speed of a smaller tool and may burst.  
maximum safety, so the least amount of  
wheel is exposed towards the operator.  
The guard helps to protect operator from broken  
wheel fragments and accidental contact with wheel.  
6. Dress appropriately. Wear leather leggings and  
fire resistant footwear during use. Do not wear pants  
with cuffs, shirts with open pockets, or any clothing  
that can catch and hold molten metal or sparks.  
3. Wheels must be used only for recommended  
applications. For example: do not grind with  
the side of cut-off wheel. Abrasive cut-off wheels  
are intended for peripheral grinding, side forces  
applied to these wheels may cause them to shatter.  
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Safety Warnings Specific for abrasive Cutting-off Operations  
1. Do not “jam” the cut-off wheel or apply  
excessive pressure. Do not attempt to make  
an excessive depth of cut. Overstressing the  
wheel increases the loading and susceptibility  
to twisting or binding of the wheel in the cut and  
the possibility of kickback or wheel breakage.  
4. Do not restart the cutting operation in  
the workpiece. let the wheel reach full  
speed and carefully reenter the cut.  
The wheel may bind, walk up or kickback if the  
power tool is restarted in the workpiece.  
5. Support panels or any oversized workpiece to  
minimize the risk of wheel pinching and kickback.  
Large workpieces tend to sag under their own weight.  
Supports must be placed under the workpiece  
near the line of cut and near the edge of the  
workpiece on both sides of the wheel.  
2. Do not position your body in line with and  
behind the rotating wheel. When the wheel,  
at the point of operation, is moving away from  
your body, the possible kickback may propel the  
spinning wheel and the power tool directly at you.  
3. When wheel is binding or when interrupting a  
cut for any reason, switch off the power tool  
and hold the power tool motionless until the  
wheel comes to a complete stop. never attempt  
to remove the cut-off wheel from the cut while  
the wheel is in motion otherwise kickback  
may occur. Investigate and take corrective  
6. use extra caution when making a “pocket cut”  
into existing walls or other blind areas.  
The protruding wheel may cut gas or water pipes,  
electrical wiring or objects that can cause kickback.  
action to eliminate the cause of wheel binding.  
Safety Warnings Specific for Sanding Operations  
Do not use excessively oversized sanding disc paper. Follow manufacturer’s recommendations  
when selecting sanding paper. Larger sanding paper extending beyond the sanding pad  
presents a laceration hazard and may cause snagging, tearing of the disc or kickback.  
Safety Warnings Specific for polishing Operations  
Do not allow any loose portion of the polishing bonnet or its attachment strings  
to spin freely. tuck away or trim any loose attachment strings. Loose and spinning  
attachment strings can entangle your fingers or snag on the workpiece.  
Safety Warnings Specific for Wire Brushing Operations  
1. Be aware that wire bristles are thrown by  
the brush even during ordinary operation.  
Do not overstress the wires by applying  
excessive load to the brush. The wire bristles  
can easily penetrate light clothing and/or skin.  
2. if the use of a guard is recommended for  
wire brushing, do not allow any interference  
of the wire wheel or brush with the guard.  
Wire wheel or brush may expand in diameter  
due to work load and centrifugal forces.  
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Vibration Safety  
This tool vibrates during use. Repeated or long-term  
exposure to vibration may cause temporary or permanent  
physical injury, particularly to the hands, arms and  
shoulders. To reduce the risk of vibration-related injury:  
2. Do not smoke during use. Nicotine reduces  
the blood supply to the hands and fingers,  
increasing the risk of vibration-related injury.  
3. Wear suitable gloves to reduce the  
vibration effects on the user.  
1. Anyone using vibrating tools regularly or for an  
extended period should first be examined by a  
doctor and then have regular medical check-ups  
to ensure medical problems are not being caused  
or worsened from use. Pregnant women or  
people who have impaired blood circulation to  
the hand, past hand injuries, nervous system  
disorders, diabetes, or Raynaud’s Disease should  
not use this tool. If you feel any medical or  
physical symptoms related to vibration (such as  
tingling, numbness, and white or blue fingers),  
seek medical advice as soon as possible.  
4. Use tools with the lowest vibration when there  
is a choice between different processes.  
5. Include vibration-free periods each day of work.  
6. Grip tool as lightly as possible (while still keeping  
safe control of it). Let the tool do the work.  
7. To reduce vibration, maintain the tool as  
explained in this manual. If any abnormal  
vibration occurs, stop use immediately.  
SaVE thESE inStRuCtiOnS.  
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Grounding  
tO pREVEnt ElECtRiC ShOCK anD DEath FROm  
inCORRECt GROunDinG WiRE COnnECtiOn:  
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  
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 3-prong plug and Outlet.)  
3. The 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 preceding illustration.  
3-prong plug and Outlet  
(See 3-prong plug and Outlet.)  
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, reducing the risk  
of electric shock. (See 3-prong plug and Outlet.)  
Double insulated tools: tools with two prong plugs  
1. Tools marked “Double Insulated” do not  
require grounding. They have a special  
double insulation system which satisfies OSHA  
requirements and complies with the applicable  
standards of Underwriters Laboratories, Inc.,  
the Canadian Standard Association,  
and the National Electrical Code.  
2. Double insulated tools may be used in either of the  
120 volt outlets shown in the preceding illustration.  
(See Outlets for 2-prong plug.)  
Outlets for 2-prong plug  
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Extension Cords  
1. Grounded tools require a three wire extension cord.  
Double Insulated tools can use either  
7. Make sure the 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.  
a two or three wire extension cord.  
2. As the distance from the supply outlet increases,  
you must use a heavier gauge extension cord.  
Using extension cords with inadequately sized wire  
causes a serious drop in voltage, resulting in loss of  
power and possible tool damage. (See table a.)  
8. Protect the extension cords from sharp objects,  
excessive heat, and damp or wet areas.  
RECOmmEnDED minimum WiRE GauGE  
FOR EXtEnSiOn CORDS* (120/240 VOlt)  
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 table a.)  
EXtEnSiOn CORD  
namEplatE  
lEnGth  
ampERES  
(at full load)  
25′ 50′ 75′ 100′ 150′  
4. When using more than one extension cord to make  
up the total length, make sure each cord contains at  
least the minimum wire size required. (See table a.)  
0 – 2.0  
2.1 – 3.4  
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  
-
3.5 – 5.0  
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 table a.)  
5.1 – 7.0  
7.1 – 12.0  
12.1 – 16.0  
16.1 – 20.0  
-
6. If you are using an extension cord outdoors, make  
sure it is marked with the suffix “W-A” (“W” in  
-
-
* Based on limiting the line volt-  
age drop to five volts at 150% of  
the rated amperes.  
Canada) to indicate it is acceptable for outdoor use.  
taBlE a  
Symbology  
WARNING marking concerning Risk  
of Eye Injury. Wear ANSI-approved  
safety goggles with side shields.  
Double Insulated  
Canadian Standards Association  
Underwriters Laboratories, Inc.  
Read the manual before  
set-up and/or use.  
WARNING marking concerning  
Risk of Hearing Loss.  
Wear hearing protection.  
Volts Alternating Current  
V~  
a
WARNING marking  
concerning Risk of Fire.  
Do not cover ventilation ducts.  
Keep flammable objects away.  
WARNING marking concerning  
Risk of Electric Shock.  
Amperes  
No Load Revolutions per Minute (RPM)  
n xxxx/min.  
0
Properly connect power cord  
to appropriate outlet.  
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Specifications  
Electrical Rating  
120V~ / 60Hz / 11A  
7800 RPM  
Motor No Load Speed  
Max. Accessory Diameter  
7″ (178 mm)  
Max. Accessory Thickness 1/4" (6mm)  
7/8"  
Arbor Hole Diameter  
Using included adapter  
Spindle Thread  
5/8″ x 11 TPI  
Setup - Before use:  
Read the EntiRE impORtant SaFEtY inFORmatiOn section at the beginning of this  
manual including all text under subheadings therein before set up or use of this product.  
tO pREVEnt SERiOuS injuRY FROm aCCiDEntal OpERatiOn:  
turn the power Switch of the tool off and unplug the tool from its electrical  
outlet before assembling or making any adjustments to the tool.  
note: For additional information regarding the parts listed in the following pages,  
refer to the Assembly Diagram near the end of this manual.  
aSSEmBlY  
installing the Wheel Guard  
tO pREVEnt SERiOuS injuRY: Do not operate this tool without the Wheel Guard properly installed.  
Wheel  
Guard  
Nut  
1. Loosen the Wheel Guard Nut.  
2. Slide the collar of the Wheel Guard  
over the rim of the Gear Housing.  
Collar  
Wheel Guard  
3. Rotate the Wheel Guard as needed to  
shield you during the planned work.  
4. Tighten the Wheel Guard Nut securely.  
5. Check the Wheel Guard to ensure it is firmly in place.  
Gear  
Housing  
Adjust if necessary before proceeding.  
Figure a  
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installing the auxiliary handle  
tO pREVEnt SERiOuS injuRY:  
Do not operate this tool with one hand only or without the auxiliary handle properly installed.  
Auxiliary Handle  
1. The Auxiliary Handle may be installed  
in one of three positions, on either side  
or on top of the Gear Housing.  
Alternate locations  
2. Screw the threaded end of the  
Auxiliary Handle into the selected position.  
Tighten securely before beginning work.  
Figure B  
Functions  
Indicator Light  
Lock ON Button  
Auxiliary Handle  
Spindle Lock  
Blade  
Trigger  
Guard  
Figure C  
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Operating instructions  
Read the EntiRE impORtant SaFEtY inFORmatiOn section at the beginning of this  
manual including all text under subheadings therein before set up or use of this product.  
tool Set up  
tO pREVEnt SERiOuS injuRY FROm aCCiDEntal OpERatiOn:  
turn the power Switch of the tool off and unplug the tool from its  
electrical outlet before installing accessories.  
installing a non-threaded Grinding Wheel  
1. The Grinding Wheel MUST be:  
rated to at least 7800 RPM.  
c. Rotate the wheel 90° and repeat the test  
until the entire wheel has been checked.  
• no larger than 7″ (178 mm) in diameter.  
• fitted with a 7/8” round arbor hole.  
• 1/4” (6mm) thick or less.  
suitable for surface grinding, not edge grinding.  
dry and clean.  
d. An undamaged wheel will give a clear tone.  
If cracked, there will be a dead sound  
and not a clear ring.  
5. For wheels with paper gaskets (blotters) or  
metal gaskets: Slip the grinding wheel onto the  
Spindle with the gasket first. The gasket should be  
centered on the grinding wheel and the wheel and  
gasket should rest flat against the Inner Flange.  
proven undamaged by inspection and  
by the ring-test explained below.  
2. Press in and hold the Spindle Lock Button  
to prevent the Spindle from turning.  
WaRninG: to prevent serious  
injury, gaskets must be used for all  
3. Remove the Outer Flange. Keep the  
Inner Flange in position on the Spindle.  
grinding wheels they are provided with.  
Gaskets help prevent grinding wheel damage  
and wheel slippage, causes of wheel failure.  
4. Closely inspect the Grinding Wheel before mounting.  
Perform a ring-test on the wheel (unless wheel is  
smaller than 4″ or is an unusual shape) as follows:  
6. Thread the Outer Flange onto the Spindle.  
Wrench tighten only enough so that the wheel is  
securely held on the spindle.  
a. Suspend wheel using a dowel or  
finger through the arbor hole.  
WaRninG: to prevent serious injury,  
do not overtighten flange. Overtightening can  
damage the wheel, causing wheel failure.  
45°  
45°  
hang  
Wheel  
from  
V
E
R
t
i
C
a
l
Dowel  
tap  
Wheel  
here  
C
E
n
t
E
R
45°  
45°  
b. Tap the flat side of the wheel with a light non-  
metallic object, such as a screwdriver handle,  
at a point 45° from the vertical center line on  
each side of the wheel and 1 – 2 inches from  
the edge of the wheel (see Illustration).  
Page 14  
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Item 69454  
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installing a threaded accessory  
tO pREVEnt injuRY: Wear heavy-duty work gloves when handling wire wheels and brushes.  
these accessories are sharp and can cause injury.  
1. The accessory MUST be:  
rated to at least 7800 RPM.  
• no larger than 7″ (178 mm) in diameter.  
• fitted with a threaded opening of 5/8″ x 11 TPI.  
undamaged.  
a sanding disc and backing pad,  
a sanding flap disc, a wire wheel or  
a wire cup brush (accessories not included).  
2. Press in and hold the Spindle Lock Button  
to prevent the Spindle from turning.  
3. Remove the Outer Flange and the  
Inner Flange and keep in a safe place.  
Figure E  
4. Thread disc accessory firmly onto the Spindle.  
Wrench tighten onto the spindle.  
Workpiece and Work area Set up  
1. Designate a work area that is clean and well-lit.  
The work area must not allow access by children  
or pets to prevent distraction and injury.  
3. Secure loose workpieces using a vise or clamps  
(not included) to prevent movement while working.  
4. There must not be hazardous objects, such  
as utility lines or foreign objects, nearby that  
will present a hazard while working.  
2. Route the power cord along a safe route  
to reach the work area without creating a  
tripping hazard or exposing the power cord to  
possible damage. The power cord must  
reach the work area with enough extra length  
to allow free movement while working.  
5. You must use personal safety equipment including,  
but not limited to, ANSI-approved eye and hearing  
protection, as well as heavy-duty work gloves.  
6. Before beginning work, provide for sparks and  
debris that will fly off the work surface.  
General Operating instructions  
tO pREVEnt SERiOuS injuRY: Grip the tool firmly in both hands.  
1. Make sure that the Trigger is not  
locked on, then plug in the tool.  
5. To create a smoother surface,  
keep the tool moving over the work surface.  
2. Squeeze the Trigger to start the tool.  
To lock the tool on, press the Lock ON  
Button then release the Trigger.  
6. Release the Trigger to stop the tool, or press and  
release the Trigger if the Lock ON Button is engaged.  
7. Allow the tool to come to a complete  
stop before setting it down.  
3. Allow the tool to come up to full speed  
before touching the work material.  
8. To prevent accidents, turn off the tool and  
disconnect its power supply after use. Clean, then  
store the tool indoors out of children’s reach.  
4. Apply the wheel to the work material at a 10° – 15°  
angle, allowing the tool to operate at full speed.  
If the tool bogs down, use lighter pressure.  
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Page 15  
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maintenance and Servicing  
procedures not specifically explained in this manual must  
be performed only by a qualified technician.  
tO pREVEnt SERiOuS injuRY FROm aCCiDEntal OpERatiOn:  
turn the power Switch of the tool off and unplug the tool from its electrical outlet  
before performing any inspection, maintenance, or cleaning procedures.  
tO pREVEnt SERiOuS injuRY FROm tOOl FailuRE:  
Do not use damaged equipment. if abnormal noise or vibration occurs,  
have the problem corrected before further use.  
Cleaning, maintenance, and lubrication  
1. BEFORE EaCh uSE, inspect the general  
2. aFtER uSE, wipe external surfaces  
condition of the tool. Check for:  
of the tool with clean cloth.  
loose hardware,  
3. Periodically blow dust and grit out of the motor vents  
using dry compressed air. Wear ANSI-approved  
safety goggles and NIOSH-approved  
misalignment or binding of moving parts,  
cracked or broken parts,  
breathing protection while doing this.  
damaged electrical wiring, and  
4.  
WaRninG! if the supply cord of this  
power tool is damaged, it must be replaced  
only by a qualified service technician.  
any other condition that may  
affect its safe operation.  
accessory Storage and handling  
1. Handle accessories carefully to prevent  
dropping or bumping. Do not use wheels  
that have been dropped or bumped.  
2. Store accessories in shelves, racks, boxes, or  
drawers. Storage area must be kept dry, and above  
freezing. Any grinding or cut-off wheels exposed to  
humidity or freezing temperatures must not be used.  
Page 16  
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troubleshooting  
problem  
Tool will not start.  
possible Causes  
1. Cord not connected.  
likely Solutions  
1. Check that cord is plugged in.  
2. No power at outlet.  
2. Check power at outlet. If outlet is unpowered,  
turn off tool and check circuit breaker.  
If breaker is tripped, make sure circuit is right  
capacity for tool and circuit has no other loads.  
3. Tool’s thermal reset  
3. Turn off tool and allow to cool.  
Press reset button on tool.  
breaker tripped (if equipped).  
4. Internal damage or wear. (Carbon  
brushes or switch, for example.)  
4. Have technician service tool.  
Tool operates slowly. 1. Excess pressure applied to workpiece. 1. Decrease pressure, allow tool to do the work.  
2. Power being reduced by long or  
small diameter extension cord.  
2. Eliminate use of extension cord.  
If an extension cord is needed, use one with  
the proper diameter for its length and load.  
See Extension Cords in GROUNDING section.  
Have qualified technician replace brushes.  
Performance  
Carbon brushes worn or damaged.  
decreases over time.  
Excessive noise  
or rattling.  
Internal damage or wear.  
(Carbon brushes or bearings, for example.)  
1. Forcing tool to work too fast.  
Have technician service tool.  
Overheating.  
1. Allow tool to work at its own rate.  
2. Blocked motor housing vents.  
2. Wear ANSI-approved safety goggles and  
NIOSH-approved dust mask/respirator while  
blowing dust out of motor using compressed air.  
3. Motor being strained by long or  
small diameter extension cord.  
3. Eliminate use of extension cord.  
If an extension cord is needed, use one with  
the proper diameter for its length and load.  
See Extension Cords in GROUNDING section.  
1. Be sure disc accessory arbor is correct  
and Outer Flange/Arbor Nut is tight.  
Tool does not  
grind, sand or  
brush effectively.  
1. Disc accessory may be  
loose on Spindle.  
2. Disc accessory may be damaged,  
worn or wrong type for the material.  
2. Check condition and type of disc accessory.  
Use only proper type of disc  
accessory in good condition.  
Follow all safety precautions whenever diagnosing or servicing  
the tool. Disconnect power supply before service.  
Item 69454  
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Page 17  
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parts list and Diagram  
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. NEITHER 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 INSTALLATIoN oF RePLACeMeNT PARTS THeReTo.  
parts list  
part  
1
2
3
4
5
6
7
8
Description  
Qty  
1
1
1
1
1
1
1
1
4
4
4
1
2
1
7
1
1
1
1
1
4
1
1
1
1
1
1
1
1
part  
30  
31  
32  
33  
34  
35  
36  
37  
38  
39  
40  
41  
42  
43  
44  
45  
46  
47  
48  
49  
50  
51  
52  
53  
54  
55  
56  
57  
Description  
Qty  
1
2
1
1
1
1
1
1
1
2
1
2
2
2
1
1
1
1
2
1
1
1
1
1
1
5
1
1
Outer Flange  
Rotor  
Grinding Wheel  
Inner Flange  
Wheel Guard  
Screw St4.8x60  
Air Baffle Plate  
Stator  
Bearing 608  
Bearing Sleeve  
Housing  
Bolt M8x30  
Nut M8  
Spindle  
Half Round Key 4X5xφ13  
Screw M5x14  
Spring Washer 5  
Flat Washer 5  
Front Cover  
Bearing 6201  
Bearing Retaining Plate  
Screw M4x10  
Nameplate  
9
Side Cover (right)  
Screw St2.9x10  
Rear Cover (right)  
Brush Holder  
Disc Spring  
Carbon Brush  
Rear Cover (left)  
Side Cover (left)  
Power Cord  
Cable Sleeve  
Screw St4.2x14  
Cable Pressplate  
Right Handle  
Trigger  
Power Indicator-Lamp  
Indicator-Lamp Cover  
Left Handle  
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
20  
21  
22  
23  
24  
25  
26  
27  
28  
29  
Big Gear  
Wave Washer Φ12  
Circlip For Shaft Φ12  
Circlip Φ5  
Needle Bearing Hk081410  
Screw St4.8x25  
Gear Box  
Spindle Lock Spring  
Spindle Lock  
Auxiliary Handle  
Aulminium Sleeve  
Nut M8  
Screw St4.2x16  
Pin Wrench  
Small Gear  
Bearing Retaining Plate  
Hex Key  
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 available individually as replacement parts.  
Page 18  
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assembly Diagram  
Item 69454  
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Page 19  
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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 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  
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