7” ELECTRONIC POLISHER
Model 66615
SET uP aNd OPERaTINg INSTRuCTIONS
Read this material before using this product.
Failure to do so can result in serious injury.
SaVE THIS MaNuaL.
©
®
Copyright 2009 by Harbor Freight Tools . All rights reserved. No portion of this manual or any artwork
contained herein may be reproduced in any shape or form without the express written consent of
Harbor Freight Tools. Diagrams within this manual may not be drawn proportionally. Due to continuing
improvements, actual product may differ slightly from the product described herein. Tools required for
assembly and service may not be included.
For technical questions or replacement parts, please call 1-800-444-3353.
Manual Revised 10b
increased risk of electric shock if your
body is grounded.
tools that have the switch on invites
accidents.
c.do not expose power tools to rain or
wet conditions. Water entering a power
tool will increase the risk of electric
shock.
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.
d.do not abuse the cord. Never use
the cord for carrying, pulling or
e.do not overreach. Keep proper
footing and balance at all times. This
enables better control of the power tool
in unexpected situations.
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
e.When operating a power tool
outdoors, use an extension cord
suitable for outdoor use. Use of a cord
suitable for outdoor use reduces the risk
of electric shock.
moving parts. Loose clothes, jewelry or
long hair can be caught in moving parts.
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.
f. 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.
h.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.
3. Personal safety
a.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.
4. Power tool use and care
b.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.
a.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.
b.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.
c.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
c.disconnect the plug from the power
source and/or the battery pack from
REV 10b
SKU 66615
For technical questions, please call 1-800-444-3353.
Page 3
the power tool before making any
adjustments, changing accessories,
or storing power tools. Such
preventive safety measures reduce
the risk of starting the power tool
accidentally.
illustrations and specifications
provided with this power tool. Failure
to follow all instructions listed below
may result in electric shock, fire and/or
serious injury.
2. Operations such as grinding, wire
brushing, or cutting-off are not
recommended to be performed with
this power tool. Operations for which
the power tool was not designed may
create a hazard and cause personal
injury.
d.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.
e.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.
3. 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.
4. 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.
f. Keep cutting tools sharp and clean.
Properly maintained cutting tools with
sharp cutting edges are less likely to
bind and are easier to control.
g.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.
5. 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.
5. Service
6. 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.
a.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.
Safety Warnings Common for
Sanding or Polishing Operations
7. do not use a damaged accessory.
Before each use inspect the
1. This power tool is intended to
function as a sander or polisher. Read
all safety warnings, instructions,
accessory such as abrasive wheels
for chips and cracks, backing pad
REV 10b
Page 4
For technical questions, please call 1-800-444-3353.
SKU 66615
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.
11. 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 pulled into the spinning
accessory.
12. 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.
13. 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.
8. 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 work piece
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.
14. 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.
15. do not operate the power tool near
flammable materials. Sparks could
ignite these materials.
16. do not use accessories that require
liquid coolants. Using water or other
liquid coolants may result in electrocution
or shock.
17. Maintain labels and nameplates on
the tool. These carry important safety
information. If unreadable or missing,
contact Harbor Freight Tools for a
replacement.
9. Keep bystanders a safe distance away
from work area. anyone entering
the work area must wear personal
protective equipment. Fragments of
work piece or of a broken accessory
may fly away and cause injury beyond
immediate area of operation.
18. Avoid unintentional starting. Prepare to
begin work before turning on the tool.
10. 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.
19. Do not depress the spindle lock when
starting or during operation.
20. 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.
REV 10b
SKU 66615
For technical questions, please call 1-800-444-3353.
Page 5
21. 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.
microscopic particles. (California Health
& Safety Code § 25249.5, et seq.)
25. 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.)
22. This product is not a toy. Keep it out of
reach of children.
23. 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:
26. 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.
• Avoid operating alone.
• Do not use with power switch locked
on.
• Properly maintain and inspect to avoid
electrical shock.
Kickback and Related Warnings
• Any power cord must be properly
grounded. Ground Fault Circuit
Interrupter (GFCI) should also be
implemented – it prevents sustained
electrical shock.
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.
24. WARNING: Some dust created by power
sanding, sawing, grinding, drilling, and
other construction activities, contains
chemicals known [to the State of
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.
California] to cause cancer, birth defects
or other reproductive harm. Some
examples of these chemicals are:
• Lead from lead-based paints
• Crystalline silica from bricks and
cement or other masonry products
• Arsenic and chromium from chemically
treated lumber
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
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.
REV 10b
Page 6
For technical questions, please call 1-800-444-3353.
SKU 66615
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
Polishing Operations
1. 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.
2. Never place your hand near the
rotating accessory. Accessory may
kickback over your hand.
2. If waxing and polishing, make sure the
object being polished is free from burrs
and other foreign matter which could
damage the Bonnets (52, 53).
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.
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:
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.
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
5. do not attach a saw chain
woodcarving blade or toothed saw
blade. Such blades create frequent
kickback and loss of control.
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.
Safety Warnings Specific for
Sanding Operations
1. 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.
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.
REV 10b
SKU 66615
For technical questions, please call 1-800-444-3353.
Page 7
4. Use tools with the lowest vibration when
there is a choice between different
processes.
double Insulated Tools: Tools with
Two Prong Plugs
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.
Outlets for 2-Prong Plug
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
SaVE THESE
INSTRuCTIONS.
Standard Association, and the National
Electrical Code.
gROuNdINg
TO PREVENT
ELECTRIC SHOCK
aNd dEaTH FROM INCORRECT
gROuNdINg WIRE
CONNECTION:
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.)
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
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.
(See Table a.)
electrician.
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.)
REV 10b
Page 8
For technical questions, please call 1-800-444-3353.
SKU 66615
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.
Symbology
Double Insulated
(See Table a.)
Canadian Standards Association
Underwriters Laboratories, Inc.
Volts Alternating Current
Amperes
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.)
V~
a
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.
No Load Revolutions per Minute
(RPM)
n xxxx/min.
0
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.
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)
EXTENSION CORd
NaMEPLaTE
LENgTH
aMPERES
(at full load)
25’ 50’ 75’ 100’ 150’
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
REV 10b
SKU 66615
For technical questions, please call 1-800-444-3353.
Page 9
aSSEMBLY
SPECIFICaTIONS
auXILIaRY HaNdLE (36)
Electrical Specifications 120 V~ / 60 Hz / 10 A
No load speed
1000~3500 RPM
Maximum Accessory Size 7” Diameter
Mounting Disc Type
Variable Speed Switch
7” Hook & Loop
Sliding Button (+ & -)
SPINdLE
LOCK (34)
Display Unit of Measure RPM x 100
Accessories Polishing Bonnet
FIguRE B
gEaR BOX
(32)
Foam Bonnet
Sanding Disc - 80 Grit
MOuNTINg
dISC (51)
uNPaCKINg
When unpacking, make sure that the
item is intact and undamaged. If any parts
are missing or broken, please call Harbor
Freight Tools at 1-800-444-3353 as soon as
possible.
1. To attach the Mounting Disc (51) to the
Polisher, press and hold the Spindle
Lock (34). Screw the Mounting Disc
onto the Spindle (50) of the tool. Then
release pressure on the Spindle Lock.
INSTRuCTIONS FOR PuTTINg
INTO uSE
2. To attach the Auxiliary Handle (36),
screw the Handle firmly into the threaded
mounting hole located on either side of
the Gear Box (32).
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 (11) off
and unplug the Polisher 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.
Page 10
For technical questions, please call 1-800-444-3353.
SKU 66615
onto the Mounting Disc.
(See Figures a and B.)
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.
3. Make sure the accessory is placed
evenly on the Mounting Disc and is
secure before turning on the tool.
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.
Tool Set up
TO PREVENT
SERIOuS INjuRY
FROM aCCIdENTaL
OPERaTION:
2. Route the Power Cord (5) 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.
Turn the Power Switch (11) off
and unplug the Polisher from its
electrical outlet before
performing any inspection,
maintenance, or cleaning
procedures.
3. Secure loose work pieces using a vise
or clamps (not included) to prevent
movement while working.
To attach The Polishing Bonnet, Foam
Bonnet, and Sanding disc:
FOaM
BONNET
(53)
4. There must not be hazardous objects,
such as utility lines or foreign objects,
nearby that will present a hazard while
working.
FIguRE a
5. Make sure to read and understand all
instructions and safety precautions as
outlined in the manufacturer’s manual for
the object you will polish or sand.
6. If waxing and polishing, make sure the
object being waxed and polished is free
from burrs and any other foreign matter
which could damage the Bonnets (52,
53).
SaNdINg
dISC (54)
POLISHINg
BONNET (52)
1. The face of the Mounting Disc (51) and
backs of the Polishing Bonnet (52),
Foam Bonnet (53), and Sanding Disc
(54) have a “hook-and-loop” design.
(See Figures a and B.)
2. To attach the Polishing Bonnet , Foam
Bonnet, or Sanding Disc to the Mounting
Disc simply press the accessory firmly
SKU 66615
For technical questions, please call 1-800-444-3353.
Page 11
general Operating Instructions
FIguRE C
To Wax an Object:
1. Attach the Foam Bonnet (53) to the
Mounting Disc (51) as previously
discussed in this manual.
dISPLaY
(10)
POWER
SWITCH (11)
NOTE: Prior to waxing an object, make sure
the surface has been thoroughly cleaned
and is free of dust, dirt, oil, grease, etc.
– SPEEd
BuTTON (12)
+ SPEEd
BuTTON (13)
2. Apply about two tablespoons of polishing
liquid or wax (not included) evenly on
the Foam Bonnet (53). Do not apply
the polishing liquid or wax directly to
the object’s surface. The amount of
polishing liquid or wax needed will vary
according to the object’s size. Avoid
using too much polishing liquid or
wax. The Foam Bonnet will not absorb
as much polishing liquid or wax in
subsequent applications.
6. Increase the tool’s speed by pressing
the + Speed Button (13). Decrease the
tool’s speed by pressing the – Speed
Button (13). (See Figure C.)
7. The Display (10) will indicate the tool’s
speed.
NOTE: When first applying wax to the object,
start the tool at its lowest speed to avoid
throwing wax off the Foam Bonnet (53).
Then increase the speed as needed.
3. Plug the Power Cord (5) into the nearest
120 volt, grounded, electrical outlet.
4. In order to keep the Power Cord (5) out
of the way, hang it over your shoulder.
8. Begin applying polishing liquid or wax
to the object. Apply the polishing liquid
or wax to all flat surfaces with broad
sweeping strokes in a figure eight
pattern. Apply the polishing liquid or wax
evenly over the surface of the object,
and add additional polishing liquid or wax
as needed.
IMPORTaNT: Start and stop the Polisher
only while it is held firmly against the
surface of the object being waxed.
Failure to do so may result in the Foam
Bonnet (53) being thrown from the
Mounting Disc (51).
9. After the polishing liquid or wax has been
applied to the object’s surface, turn the
Power Switch (11) to its “OFF” position.
Then unplug the Power Cord (5).
(See Figure C.)
5. Grip the Polisher firmly with both hands.
Then turn the Power Switch (11) to its
“ON” position. (See Figure C.)
10. Remove the Foam Bonnet (53) from
the Mounting Disc (51). With the Foam
Bonnet in your hand, apply the polishing
liquid or wax to all hard to reach areas of
the object. (See Figures a and B.)
REV 10b
Page 12
For technical questions, please call 1-800-444-3353.
SKU 66615
11. Allow sufficient time for the polishing
9. Remove the Polishing Bonnet (52)
from the Mounting Disc (51). With the
Polishing Bonnet in your hand, remove
the polishing liquid or wax from all hard
to reach areas of the object.
liquid or wax to dry on the object.
To Polish an Object:
1. Attach the Polishing Bonnet (52) to
the Mounting Disc (51) as previously
discussed in this manual.
(See Figures a and B.)
To Sand an Object:
(See Figures a and B.)
1. Attach the Sanding Disc (54) to the
Mounting Disc (51) as previously
discussed in this manual.
2. Plug the Power Cord (5) into the nearest
120 volt, grounded, electrical outlet.
(See Figures a and B.)
3. In order to keep the Power Cord (5) out
of the way, hang it over your shoulder.
2. Plug the Power Cord (5) into the nearest
120 volt, grounded, electrical outlet.
IMPORTaNT: Start and stop the Polisher only
while it is held firmly against the surface
of the object being polished. Failure to
do so may result in the Polishing Bonnet
(52) being thrown from the Mounting
Disc (51).
3. In order to keep the Power Cord (5) out
of the way, hang it over your shoulder.
4. Grip the Polisher firmly with both hands.
Then turn the Power Switch (11) to its
“ON” position. (See Figure C.)
4. Grip the Polisher firmly with both hands.
Then turn the Power Switch (11) to its
“ON” position. (See Figure C.)
5. Increase the tool’s speed by pressing
the + Speed Button (13). Decrease the
tool’s speed by pressing the – Speed
Button (13). (See Figure C.)
5. Increase the tool’s speed by pressing
the + Speed Button (13). Decrease the
tool’s speed by pressing the – Speed
Button (13). (See Figure C.)
6. The Display (10) will indicate the tool’s
speed.
6. The Display (10) will indicate the tool’s
speed.
7. Once the Sanding Disc (54) is turning
at the desired speed, sand the object
evenly with gentle, broad, sweeping
strokes in a criss-cross pattern.
7. Begin polishing the object by lightly
buffing off the polishing liquid or wax
residue in broad sweeping strokes in a
figure eight pattern. Continue polishing
until all the residue is removed.
8. During the sanding process, it may
be necessary to occasionally stop the
Polisher, disconnect it from its electrical
outlet, remove the worn sandpaper and
replace with new sandpaper.
IMPORTaNT: Apply minimal pressure on the
Polisher to avoid damaging the surface
of the object.
9. When the sanding process is complete,
turn the Power Switch (11) to its “OFF”
position. Then unplug the Power Cord
(5). (See Figure C.)
8. After the polishing liquid or wax has
been removed from the object’s surface,
slide the Power Switch (11) to its “OFF”
position. Then unplug the Power Cord
(5). (See Figure C.)
SKU 66615
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Page 13
3. CARBON BRUSH MAINTENANCE:
IMPORTaNT: Cleaning or replacing
the Carbon Brushes (19) should
only be done by a qualified service
technician.
MaINTENaNCE aNd
SERVICINg
Procedures not specifically
explained in this manual must
be performed only by a qualified
technician.
a. The Carbon Brushes (19) may
require maintenance when the motor
performance of the tool decreases or
stops working completely. To maintain
the Brushes:
TO PREVENT
SERIOuS INjuRY
FROM aCCIdENTaL
b. First remove Right and Left Handles
OPERaTION:
(2,9).
Turn the Power Switch (11) off
and unplug the Polisher from its
electrical outlet before
performing any inspection,
maintenance, or cleaning
procedures.
c. Remove the two Carbon Brushes (19)
from the housing. Keep track of which
orientation the old Carbon Brushes
were in to prevent needless wear if they
will be reinstalled.
d. If either Carbon Brush (19) is worn
down by more than 1/2, replace both
Carbon Crushes.
TO PREVENT SERIOuS INjuRY
FROM TOOL FaILuRE:
do not use damaged equipment.
If abnormal noise or vibration
occurs, have the problem
e. To clean old Carbon Brushes (19)
before reusing them, rub the contact
areas with a pencil eraser.
corrected before further use.
f. Reinsert the old Carbon Brushes (19) in
the same orientation to reduce wear.
Inspection, Maintenance, and
Cleaning
g. When installing the Carbon Brushes
(19), make sure the carbon portions of
the Carbon Brushes contact the Motor
Armature, and that the Springs face
away from the Motor. Also, make sure
the Springs operate freely.
1. BEFORE EACH USE, inspect the
general condition of the Polisher.
Check for loose screws, misalignment
or binding of moving parts, cracked or
broken parts, damaged electrical wiring,
and any other condition that may affect
its safe operation.
Note: New Carbon Brushes (19) tend to
spark when first used until they wear and
conform to the Motor’s Armature.
2. AFTER USE, clean external surfaces
of the tool with clean cloth. do not
immerse any part of the tool in liquid.
Remove the Bonnet (52, 53) from the
tool when not in use. This will allow
the Bonnet to dry and retain its original
shape. The Bonnets may be machine-
washed in cold water with detergent.
Then machine-dry the Bonnets at
medium heat.
4.
WaRNINg! If the Power Cord (5) of
this Polisher is damaged, it must be
replaced only by a qualified service
technician.
Page 14
For technical questions, please call 1-800-444-3353.
SKU 66615
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. Internal damage or wear. (Carbon
brushes or switch, for example.)
3. 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 2. Eliminate use of extension cord. If an
diameter extension cord.
extension cord is needed, use one with
the proper diameter for its length and load.
See Extension Cords in GROUNDING
section.
Performance
Carbon brushes worn or damaged.
Have qualified technician replace brushes.
decreases over time.
Excessive noise or Internal damage or wear. (Carbon
Have technician service tool.
rattling.
Overheating.
brushes or bearings, for example.)
1. Forcing tool to work too fast.
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.
Polishing Bonnet
does not remove all
of the polishing liquid
or wax.
1. Too much polishing liquid or wax has
been applied.
1. Reduce the amount of polishing liquid or
wax used.
2. Bonnet saturated.
2. Use a clean bonnet.
Tool not properly
sanding.
1. Sandpaper is dull.
1. Replace sandpaper.
2. Wrong grit of sandpaper used.
2. Change sandpaper to a finer or coarser grit
depending on the job.
Follow all safety precautions whenever diagnosing or servicing the tool.
disconnect power supply before service.
SKU 66615
For technical questions, please call 1-800-444-3353.
Page 15
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
description
Qty.
5
1
1
1
1
1
2
1
1
1
1
1
1
4
2
2
2
2
1
1
1
1
2
1
1
3
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
description
Bracket
Qty.
1
1
1
4
1
1
1
1
1
1
1
1
3
3
1
1
1
4
4
1
1
1
1
1
1
Screw
2
Right Handle
Circuit Board
Power Cord & Plug
Cord Stress Relief
Cord Retaining Bracket
Screw
Front Bearing
Gear Box
4
5
Screw
6
Spindle Lock
Spring
7
8
Auxiliary Handle
Oil Seal
9
Left Handle
Display
10
11
12
13
14
15
16
17
18
19
22
23
24
25
26
27
28
29
Retaining Ring
Washer
Power Switch
– Speed Button
+ Speed Button
Control Cover
Screw
Retaining Ring
Large Gear
Screw
Washer
Bracket
Fixed Board
Bearing
Brush Holder
Brush Sheath
Carbon Brush
Motor Housing
Stator
Connecting Board
Washer
Screw
Key
Bearing Holder
Rear Bearing
Screw
Spindle
Mounting Disc
Polishing Bonnet
Foam Bonnet
Sanding Disc
Bushing
Rotor
Screw
REV 10b
Page 16
For technical questions, please call 1-800-444-3353.
SKU 66615
aSSEMBLY dIagRaM
33
34
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.
SKU 66615
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Page 17
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.
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
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
MERCHANTABILITy AND FITNESS.
Page 18
For technical questions, please call 1-800-444-3353.
SKU 66615
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