Harbor Freight Tools Sander 97181 User Manual

4” X 6” belt/disc sander  
Model 97181  
set up, operation & Maintenance  
instructions  
Diagrams within this manual may not be drawn proportionally.  
Due to continuing improvements, actual product may differ slightly from the product described herein.  
®
distributed exclusively by Harbor Freight tools .  
3491 Mission Oaks Blvd., Camarillo, CA 93011  
Visit our website at: http://www.harborfreight.com  
read this material before using this product.  
Failure to do so can result in serious injury.  
saVe tHis Manual.  
©
®
Copyright 2008 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.  
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caution, used  
with the safety  
alert symbol,  
saVe tHis Manual  
caution  
Keep this manual for the safety  
warnings and precautions, assembly,  
operating, inspection, maintenance and  
cleaning procedures. Write the product’s  
serial number in the back of the manual near  
the assembly diagram (or month and year of  
purchase if product has no number). Keep  
this manual and the receipt in a safe and dry  
place for future reference.  
indicates a hazardous  
situation which, if not  
avoided, could result in minor  
or moderate injury.  
notice is used to  
address practices  
not related to personal injury.  
Notice  
caution, without  
iMportant saFetY  
inForMation  
caution  
the safety alert  
symbol, is used to address  
practices not related to  
personal injury.  
in this manual, on the labeling, and all other  
information provided with this product:  
General safety rules  
this is the safety alert  
symbol. it is used to alert  
you to potential personal  
injury hazards. obey all  
safety messages that  
warninG! read all instructions  
Failure to follow all instructions listed below  
may result in electric shock, fire, and/or  
serious injury. The term “power tool” in all  
of the warnings listed below refers to this Belt/  
Disc Sander.  
follow this symbol to avoid  
possible injury or death.  
saVe tHese instructions  
danGer indicates  
1. work area safety  
danGer  
a hazardous  
situation which, if  
not avoided, will result in  
death or serious injury.  
a. Keep work area clean and well  
lit. Cluttered or dark areas invite  
accidents.  
b. Do not operate this Belt/Disc Sander  
in explosive atmospheres, such as  
in the presence of flammable liquids,  
gases or dust. Power tools create  
sparks which may ignite the dust or  
fumes.  
warninG  
indicates a  
hazardous  
situation which, if not  
avoided, could result in death  
or serious injury.  
warninG  
c. keep children and bystanders  
away while operating a this belt/  
disc sander. Distractions can  
cause you to lose control.  
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2. electrical safety  
protection. Safety equipment  
such as dust mask/respirator,  
non-skid safety shoes, hard hat,  
or hearing protection used for  
appropriate conditions will reduce  
personal injuries.  
a. The Plug on this Belt/Disc Sander  
must match the outlet. Never modify  
the plug in any way. Do not use  
any adapter plugs with grounded  
power tools. Unmodified plugs and  
matching outlets will reduce risk of  
electric shock.  
c. Avoid accidental starting. Ensure  
the switch is in the off-position  
before plugging in. Carrying power  
tools with your finger on the switch  
or plugging in power tools that have  
the switch on invites accidents.  
b. Avoid body contact with grounded  
surfaces such as pipes, radiators,  
ranges and refrigerators. There is  
an increased risk of electric shock if  
your body is grounded.  
d. 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.  
c. do not expose this belt/disc  
sander to rain or wet conditions.  
Water entering a power tool will  
increase the risk of electric shock.  
e. Do not overreach. Keep proper  
footing and balance at all times.  
This enables better control of the  
power tool in unexpected situations.  
d. 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.  
f. 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.  
e. When operating this Belt/Disc  
Sander outdoors, use an extension  
cord suitable for outdoor use. Use  
of a cord suitable for outdoor use  
reduces the risk of electric shock.  
g. 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. personal safety  
a. Stay alert, watch what you are  
doing and use common sense when  
operating this Belt/Disc Sander. 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.  
4. power tool use and care  
a. Do not force this Belt/Disc Sander.  
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.  
b. use safety equipment. always  
wear ansi-approved safety  
goggles with full face shield  
b. Do not use this Belt/Disc Sander if  
the switch does not turn it on and  
off. Any power tool that cannot  
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be controlled with the switch is  
dangerous and must be repaired.  
Vibration Hazard  
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:  
c. disconnect the plug from the  
power source before making  
any adjustments, changing  
accessories, or storing power  
tools. Such preventive safety  
measures reduce the risk  
of starting the power tool  
accidentally.  
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,  
d. store this belt/disc sander out of  
the reach of children and do not  
allow persons unfamiliar with it,  
or these instructions to operate.  
Power tools are dangerous in the  
hands of untrained users.  
e. Maintain this Belt/Disc Sander.  
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 Belt/Disc  
Sander repaired before use. Many  
accidents are caused by poorly  
maintained power tools.  
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.  
2. Do not smoke during use. Nicotine  
reduces the blood supply to the  
hands and fingers, increasing the risk  
of vibration-related injury.  
f. Use the Belt/Disc Sander in  
accordance with these instructions  
and in the manner intended, taking  
into account the working conditions  
and the work to be performed.  
Use of this Belt/Disc Sander for  
operations different from those  
intended could result in a hazardous  
situation.  
3. Wear suitable gloves to reduce the  
vibration effects on the user.  
4. Use tools with the lowest vibration  
when there is a choice between  
different processes.  
5. service  
5. Include vibration-free periods each  
day of work.  
a. Have your Belt/Disc Sander serviced  
by a qualified repair person using  
only identical replacement parts.  
This will ensure that the safety of  
this Belt/Disc Sander is maintained.  
6. To reduce vibration, maintain the tool  
as explained in this manual. If any  
abnormal vibration occurs, stop use  
immediately.  
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• Any power cord must be properly  
grounded. Ground Fault Circuit  
Interrupter (GFCI) should also be  
implemented – it prevents sustained  
electrical shock.  
Specific Safety Rules  
1. Always wear ANSI-approved safety  
goggles with full face shield when  
operating this Belt/Disc Sander.  
2. Support workpiece with Miter Gage,  
Backstop or work table.  
10. 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:  
3. Maintain 1/16” maximum clearance  
between table and sanding belt, or  
disc.  
4. Avoid kickback by sanding in  
accordance with the directional  
arrows.  
• Lead from lead-based paints  
• Crystalline silica from bricks and  
cement or other masonry products  
• Arsenic and chromium from  
5. Maintain labels and nameplates on  
the tool. These carry important safety  
information. If unreadable or missing,  
contact Harbor Freight Tools for a  
replacement.  
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  
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.)  
6. Avoid unintentional starting. Prepare  
to begin work before turning on the  
tool.  
7. Do not leave the Belt/Disc Sander  
unattended when it is plugged into  
an electrical outlet. Turn off the tool,  
and unplug it from its electrical outlet  
before leaving.  
11. 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.  
8. This product is not a toy. Keep it out  
of reach of children.  
9. 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.  
s aV e t H e s e  
instructions.  
• Do not use with power switch locked  
on.  
• Properly maintain and inspect to  
avoid electrical shock.  
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of electric shock. (see 3-prong plug  
and outlet.)  
GroundinG  
to preVent  
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.)  
warninG  
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.  
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. (see 3-prong  
plug and outlet.)  
4. note: tHis belt/disc  
sander Has a tHree-pronG  
Grounded pluG.  
Grounded tools: tools with three  
prong plugs  
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. Using  
extension cords with inadequately  
sized wire causes a serious drop in  
voltage, resulting in loss of power and  
possible tool damage.  
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  
(see table a.) 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.)  
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3. 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.)  
symbology  
Double Insulated  
Canadian Standards Association  
Underwriters Laboratories, Inc.  
Volts Alternating Current  
Amperes  
4. 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.)  
V~  
a
5. 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.  
No Load Revolutions per Minute  
(RPM)  
n xxxx/min.  
0
6. 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.  
7. Protect the extension cords from  
sharp objects, excessive heat, and  
damp or wet areas.  
recoMMended MiniMuM wire  
GauGe For eXtension cords*  
(120/240 Volt)  
eXtension cord  
naMeplate  
lenGtH  
aMperes  
(at full load)  
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  
5.1 – 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.  
table a  
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to preVent  
serious injurY  
FroM  
speciFications  
warninG  
Housing: Sheeted  
Steel  
Roller and Block  
accidental operation:  
turn the power switch of the  
belt/disc sander to its oFF”  
position and unplug the tool  
from its electrical outlet  
Construction Materials Stop: Polyethylene  
Hardware: Carbon  
Steel  
Feet: Rubber  
Sanding Disc  
Sanding Belt  
6”  
before assembling or making  
any adjustments to the tool.  
4” W X 36” L , 80 Grit  
3/4 HP PEAK  
120V  
60Hz,  
Amps - With Load:  
3.5 AMP’S  
note: For additional information regarding  
the parts listed in the following pages,  
refer to the Assembly Diagram near  
the end of this manual.  
Motor and Electrical  
Information  
Plug  
3-Prong Grounded  
1150 FPB  
Belt Speed  
Disc Speed  
asseMblY  
1780 RPM  
Feet placement  
unpackinG  
1. Carefully set the Belt/Disc Sander on  
its side.  
When unpacking, check to make sure  
that the item is intact and undamaged. If  
any parts are missing or broken, please  
call Harbor Freight Tools at the number  
shown on the cover of this manual as soon  
as possible.  
Figure 1  
initial set up  
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.  
Rubber Pads (28)  
2. Press each Rubber Pad (28) over the  
lip of the Base at each corner. (See  
Figure 1)  
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Mounting aluminum disc  
Figure 3  
1. Use 10 & 14mm wrenches (not  
included) to tighten, if necessary.  
(See Figure 1)  
Tighten two Set Screws  
2. Set the Belt/Disc Sander on its feet.  
Figure 2  
Table Bar (72)  
Set Screw (6)  
Table (69)  
Adjusting  
Knob (75)  
Flat Washer  
(26)  
Pivot  
Indicator (70)  
Bar Holder (74)  
2. Insert other end of Table Bar (72) into  
the Two Mounting supports on bottom  
of Table (69). (See Figure 3)  
Long Shaft (54) Aluminum Disc (5)  
Figure 4  
3. Slide the Aluminum Disc (5) onto the  
Drive Axle (54) so that the Set Screw  
(6) faces the flat surface of the Drive  
Axle (54). (See Figure 2)  
4. Tighten the Set Screw (6) securely.  
(See Figure 2)  
Pivot  
Support (70)  
Mounting table for use as disc  
sander  
note: the table (69) may be used as  
support for both horizontal and  
vertical applications.  
1. Insert end of Table Bar (72) (with  
Pivot Indicator) (70) into Bar Holder  
(74). (See Figure 3 )  
Hex Bolt (71), Flat Washer (26) and Lock  
Washer (27)  
3. Mount the Pivot Indicator (70) tab to  
the Table (69) using Hex Bolt (71),  
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Flat Washer (26) and Lock Washer  
(27). (See Figure 3 & 4)  
1. Remove Table from Machine Body  
using reverse procedures in number  
6 of “Disc Sander” section above.  
4. Mount Pivot Indicator (70) to the Bar  
Holder (74) using the Adjusting Knob  
(75) and Flat Washer (26) and finger  
tighten. (See Figure 3 )  
Figure 6  
Support  
Rod (23)  
5. Tighten all fasteners. Make sure  
Pivot Indicator operates smoothly  
when Angle Adjustment Knob (75) is  
loosened.  
Nut (22)  
Figure 5  
Bar Holder  
(74)  
Support Shaft (76)  
flat side  
6. Slide Support Shaft (76) into Bar  
Holder (74) aligning flat face of the  
shaft with set screws and tighten  
securely. Slide Support Shaft  
(76) into existing hole on side of  
Machine Body (33) and with wrench  
(not supplied), tighten Bolt (32).  
(See Figure 5 )  
Outer Pulley Cover (9)  
Disc Cover (8)  
2. Set Belt/Disc Sander in vertical  
position by loosening both Nuts (22).  
Raise the Belt Support Housing (52).  
When it is vertical, tighten both Nuts  
(22) very tight to prevent the Belt  
Support Housing (52) from slipping.  
(See Figures 6 & 7)  
Mounting table for use as belt  
sander  
note: the table (69) may be used  
for both horizontal and vertical  
operations.  
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2. Align the two Tabs on the Stop Plate  
(63) with the two Holes on the top of  
the Band Support Housing (52). The  
Tabs will be underneath the Flange  
on the Band Support Housing (52).  
Insert two Machine Screws into the  
two Holes and thread them into the  
Tabs on the Stop Plate (63). Note:  
Flat Washers required between screw  
head and upper Guard Plate (58).  
(See Figure 6)  
Figure 7  
Belt Adjustment Knob (49)  
Sanding  
Belt  
Belt  
Tighten  
Handle  
Figure 8  
Sanding  
Disc  
Machine Screws  
Belt  
Adjustment  
Knob (49)  
Table (69)  
Band  
Support  
Housing (52)  
Miter  
Gauge  
(65)  
Magnetic Switch (31) with  
Orange Safety Key inserted  
Stop Plate (63) (Tabs (not shown) are  
underneath Flange on Band Support  
Housing (52) where Machine Screws  
are shown).  
3. Insert Support Shaft (76) into the hole  
facing the belts and tighten Bolt (32)  
against flat side of Support Shaft  
(76). (See Figures 6 & 7)  
3. Mount the Stop Plate (63) to the  
Band Support Housing (52) using  
Bolt (32), Flat Washer (26) and Lock  
Washer (27). (See Figure 8)  
Mounting stop plate  
1. This Stop Plate (63) fits across the  
top of the sanding belt and is for  
preventing workpiece from moving to  
the rear when sanding.  
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the Table (69) so that the combination  
square touches the sanding disc. If  
the Table (69) is 90° to the sanding  
disc, the table is level. Tighten the  
Angle Adjusting Knob (75).  
Functions  
This Belt/Disc Sander can be used  
for rough or smooth sanding. It has an  
adjustable belt platform for sanding both  
inside or outside curves. It can be used to  
sand both curved and/or flat projects. The  
included Table (69) tilts from 0° to 60° and  
can be repositioned to use with sanding  
belts or discs. There is a Miter Gauge (65)  
for precise angle sanding.  
2. If the Table (69) is not 90° to the  
sanding disc pad, loosen the Angle  
Adjusting Knob (75) and tilt the Table  
(69) until it is square with the sanding  
disc. Tighten the Angle Adjusting  
Knob (75).  
3. Loosen Screw (29) holding the Angle  
Pointer (73) and adjust it so that it  
operatinG instructions  
read the entire iMportant  
saFetY inForMation section  
at the beginning of this manual  
including all text under  
points to 90°. Tighten the Screw (29).  
General operating instructions  
1. Insert orange plastic key into  
Magnetic Switch (31). this “key”  
is a safety precaution and should  
remain in the Magnetic switch  
during use and be removed after  
Magnetic switch (31) is turned  
off and/or any time the belt/disc  
sander is left unattended or it is in  
storage.  
subheadings therein before set  
up or use of this product.  
work piece 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 injury and distraction.  
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  
adjusting the sanding belt  
tracking  
1. With the Belt/Disc Sander turned off,  
manually move the sanding belt.  
allow free movement while working.  
2. If the belt looks like it is going to  
slide off either roller, it needs to be  
adjusted.  
leveling the table  
note: For these instructions and  
“General operating instructions”  
on following pages, refer to Figure  
8 on page 17 of this manual.  
3. Turn the Belt Adjustment Knob (49)  
until the belt rides the center of the  
Rear Roller (56) and the Front Roller  
(44).  
1. Loosen the Angle Adjusting Knob (75) 4. Move the sanding belt manually  
on the Pivot Indicator (70). Place a  
combination square (not supplied) on  
after adjustment to assure proper  
alignment.  
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Mounting sanding discs  
Maintenance and  
serVicinG  
1. Remove the Table (69), if it is  
mounted in front of the sanding disc.  
Procedures not specifically  
explained in this manual  
must be performed only by a  
qualified technician.  
2. Peel off old sanding disc.  
3. Align perimeter of new sanding disc  
over the Aluminum Disc (5) and press  
firmly onto the Aluminum Disc (5)  
to preVent  
warninG  
serious injurY  
4. note: if you are using the sanding  
disc for the first time. Before  
FroM accidental  
operation:  
attaching the disc, wipe down the  
aluminum disc (5) with denatured  
alcohol (shellac thinner). this will  
clean the surface, leave no residue  
and assure a secure bond.  
turn the power switch of the  
tool to its oFF” position and  
unplug the tool from its  
electrical outlet before  
performing any inspection,  
maintenance, or cleaning  
procedures.  
5. Pressing Magnetic Switch ON will  
start the Sander. OFF will stop the  
Sander.  
to preVent serious  
injurY FroM tool  
Failure:  
do not use damaged  
equipment. if abnormal noise  
6. When using the Disc Sander, always  
use the LEFT side of the sanding  
disc (as you face it) to sand. The  
sanding disc turns counterclockwise  
and using the right side could cause  
kickback.  
or vibration occurs, have the  
problem corrected before  
further use.  
7. Use two hands and hold workpiece  
securely at all times.  
cleaning, Maintenance, and  
lubrication  
8. Always maintain a maximum of 1/16”  
clearance between the Table (69) and  
sanding disc.  
1. beFore eacH use, inspect the  
general condition of the Belt/Disc  
Sander. Check for loose screws,  
misalignment or binding of moving  
parts, cracks and any other condition  
that may affect its safe operation.  
9. When finished with Belt/Disc Sander,  
to prevent accidents, turn off and  
disconnect its power supply after  
use. remove the orange plastic  
key from the Magnetic switch (31).  
Wipe down and store the Sander  
indoors out of children’s reach.  
2. a dust port (59) is located on  
the bottom of the lower Guard  
plate (60). it held in place with  
screw (61) and can be removed  
for vacuuming collected dust and  
sanding residue. replace the dust  
SKU 97181  
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port (59) after cleaning and tighten 8. Replace the Upper Guard Plate (58)  
screw (61). and tighten the four Screws (7).  
3. aFter use, clean external surfaces 9. Push the Belt Tensioner Handle (50)  
of the tool with clean cloth.  
to the rear to tighten the belt.  
4. Periodically recheck all nuts, bolts  
and screws for tightness.  
10. Before using, manually check  
the new belt for alignment. See  
instructions in the “General  
5. Apply a light coat of paste wax to the  
Table (69) to make feeding material  
easier.  
Operating” section of this manual.  
V-belt replacement  
6. Use compressed air to blow dust and  
debris from the Sander and Motor.  
1. Remove Set Screws (6) and pull off  
Aluminum Disc (5).  
7. The Bearings on this Sander are  
2. Remove four Screws (11) and  
Washers (10) from Outer Pulley  
Cover (9).  
sealed and do not require lubrication.  
sanding belt replacement  
3. Once the Outer Pulley Cover (9) is  
removed, the V-Belt is accessible.  
1. Push the Belt Tensioner Handle (50)  
forward to loosen the belt.  
4. Remove the V-Belt (12) using a  
small straight slot screwdriver (not  
supplied). Place the tip of the  
2. Remove Upper Guard Plate (58) by  
unscrewing four Screws (7).  
screwdriver between the Motor Pulley  
(13) and the V-Belt (12) while you  
manually turn the V-Belt by hand. As  
it turns, the V-Belt will ride up and  
out of the Pulley groove. Once off  
the Motor Pulley (13), lift it off of the  
Spindle Pulley (14).  
3. Remove the Lower Guard Plate  
(60) by unscrewing the four Screws  
(7) that hold it to the Belt Support  
Housing (52).  
4. Slide the old sanding belt off the Rear  
Roller (56) and Front Roller (44).  
5. Place the new V-Belt (12) onto  
the Spindle Pulley (14), by using a  
straight slot screwdriver (not supplied)  
as a wedge, manually turn the  
5. Replace with a 4” X 36” sanding belt  
with the correct grit for the project  
you are working on. note: the  
larger the grit number, the smaller  
the grain. use small numbered  
grits for cutting and larger for  
smoothing and finishing.  
Spindle Pully (14) and ride the new  
V-Belt onto the Motor Pulley (13).  
6. Replace Outer Pulley Cover (9).  
Tighten Screws and Washers (10 &  
11).  
6. Slide new sanding belt onto Front  
and Rear Rollers.  
7.  
warninG! if the supply cord of  
this power tool is damaged, it must  
be replaced only by a qualified  
service technician.  
7. Replace the Lower Guard Plate  
(60) and tighten the four Screws (7)  
securely.  
SKU 97181  
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V-belt replacement  
V-belt tensioning  
Should the V-belt need tensioning, repeat steps 1 and 2, in V-belt Replacement  
section mentioned previously.  
1. Loosen four Motor Mount Nuts (22) and slide the Motor (40) further forward  
towards Front Roller (44), making sure to pull evenly on the motor. While holding  
the motor in its current position, tighten the Nuts (22).  
2. Place a straight edge on the faces of the two pulleys to ascertain alignment.  
Contact surfaces of the pulleys and the straight edge shall fully touch. Fully tighten  
the Nuts (22).  
3. Repeat steps 2 and 1 in the V-Belt Replacement section.  
troubleshooting  
problem  
possible causes  
likely solutions  
Belt/Disc Sander  
does not turn on  
1. Not plugged in.  
2. No power at outlet.  
3. Orange Plastic Key not inserted 3. Insert Orange Plastic Key into Magnetic  
1. Plug in Sander.  
2. Check power at outlet and/or circuit breaker.  
into Magnetic Switch (31).  
Switch (31).  
4. Switch is not turned “ON”.  
4. Turn on the Switch.  
Motor slows when 1. V-Belt too tight.  
sanding  
1. Have the V-Belt adjusted by a qualified  
technician.  
2. Applying too much pressure  
while sanding  
2. Use less pressure.  
Wood burns while 1. Sanding disc or belt may be  
1. Clean or replace disc or belt using  
instructions in this manual.  
sanding  
loaded with dirt or debris.  
2. Too much pressure.  
2. Use less pressure.  
Follow all safety precautions whenever diagnosing or servicing the tool.  
disconnect power supply before service.  
SKU 97181  
For technical questions, please call 1-800-444-3353.  
Page 16  
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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 CERTIFIEDAND 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.  
record products 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.  
SKU 97181  
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parts list  
parts list  
part  
1
description  
Q’ty  
9
part  
40  
41  
42  
43  
44  
45  
46  
47  
48  
49  
50  
51  
52  
53  
54  
55  
56  
57  
58  
59  
60  
61  
62  
63  
64  
65  
66  
67  
68  
69  
70  
71  
72  
73  
74  
75  
76  
description  
Q’ty  
1
4
2
4
1
1
1
1
1
1
1
1
1
2
1
1
1
1
1
1
1
3
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Screw M4 X 12  
Motor  
2
Flat Washer 4  
Front Cover  
Sander Disc  
Aluminum Disc  
Screw M8 X 8  
Screw M4 X 8  
Disc Cover  
27  
1
Washer 5  
3
Retaining Ring 12  
Ball Bearing  
4
1
5
1
Front Roller  
6
6
Adjusting Bracket  
Spring  
7
14  
1
8
Shaft  
9
Outer Pulley Cover  
Washer  
1
Spring  
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
20  
21  
22  
23  
24  
25  
26  
27  
28  
29  
30  
31  
32  
33  
34  
35  
36  
37  
38  
39  
16  
6
Belt Adjustment Knob  
Belt Tensioner Handle  
Screw M6 X 12  
Belt Support Housing  
Coach Bolt M8 X 35  
Drive Axle  
Screw M4 X 8  
V-Belt  
1
Motor Pulley  
Spindle Pulley  
Screw M8 X 6  
Bolt M6 X 12  
Lock Washer  
Flat Washer  
Screw M5 X 20  
Inner Pulley Cover  
Spacer  
1
1
2
6
Bearing Housing  
Rear Roller  
7
7
Left Bearing Housing  
Upper Guard Plate  
Dust Port  
3
1
1
Lower Guard Plate  
Screw  
Nut 8  
6
Supporting Rod  
Nut 10  
1
Belt Sander  
1
Stop Plate  
Base  
1
Knob M5 X 16  
Miter Gauge  
Screw M5 X 6  
Pointer  
Flat Washer 8  
Lock Washer 8  
Rubber Feet  
Screw M5 X 12  
Flat Washer 5  
Magnetic Switch  
Bolt M8 X 16  
Machine Body  
Rubber Pad1  
Steel Plate  
9
8
4
5
Sliding Bar  
5
Table  
1
Pivot Indicator  
Bolt M8 X 10  
Table Bar  
8
1
1
Angle Pointer  
Bar Holder  
1
Holding Plate  
Cable Fixing Plate  
Hold Plate Bolt  
Rubber Tube  
1
Angle Adjusting Knob  
Supporting Shaft  
1
1
1
SKU 97181  
For technical questions, please call 1-800-444-3353.  
Page 18  
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asseMblY diaGraM  
SKU 97181  
For technical questions, please call 1-800-444-3353.  
Page 19  
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liMited 1 Year / 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 for a period  
of ninety days from date of purchase that the engine/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 (90 days if used by a professional contractor or if used as rental  
equipment). This warranty does not apply to damage due directly or indirectly, to misuse,  
abuse, negligence or accidents, repairs or alterations outside our facilities, 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  
SKU 97181  
For technical questions, please call 1-800-444-3353.  
Page 20  
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