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Owner’s Manual & Safety Instructions
Save This Manual 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. 21c
When unpacking, make sure that the product is intact
and undamaged. If any parts are missing or broken,
please call 1-888-866-5797 as soon as possible.
Copyright
©
2020 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 an d se rv ic e may n ot b e in cl uded.
Read this material before using this product.
Failure to do so can result in serious injury.
SAVE THIS MANUAL.
Page 2 For technical questions, please call 1-888-866-5797. Item 58091
SaFEty OpEratiOn MaintEnancESEtup
table of contents
Safety ......................................................... 2
Specifications ............................................. 7
Setup ......................................................... 8
Operation .................................................... 9
Maintenance .............................................. 12
Parts List and Diagram .............................. 14
Warranty .................................................... 16
WarninG SyMBOLS anD DEFinitiOnS
This is the safety alert symbol. It is used to alert you to potential
personal injury hazards. Obey all safety messages that
follow this symbol to avoid possible injury or death.
Indicates a hazardous situation which, if not avoided,
will result in death or serious injury.
Indicates a hazardous situation which, if not avoided,
could result in death or serious injury.
Indicates a hazardous situation which, if not avoided,
could result in minor or moderate injury.
Addresses practices not related to personal injury.
iMpOrtant SaFEty inFOrMatiOn
General power tool Safety Warnings
read all safety warnings, instructions, 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.
Save all warnings and instructions for future reference.
The term “power tool” in the warnings refers to your mains-operated (corded)
power tool or battery-operated (cordless) power tool.
1. Work area safety
a. Keep work area clean and well lit.
Cluttered or dark areas invite accidents.
b. Do not operate power tools 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.
c. Keep children and bystanders away
while operating a power tool. Distractions
can cause you to lose control.
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2. Electrical safety
a. power tool plugs must match the outlet.
never modify the plug in any way. Do not use
any adapter plugs with earthed (grounded)
power tools. Unmodified plugs and matching
outlets will reduce risk of electric shock.
b. avoid body contact with earthed or
grounded surfaces, such as pipes,
radiators, ranges and refrigerators.
There is an increased risk of electric shock
if your body is earthed or grounded.
c. Do not expose power tools to rain or wet
conditions. Water entering a power tool
will increase the risk of electric shock.
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.
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.
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.
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.
b. use personal protective equipment. always
wear eye protection. Protective equipment
such as dust mask, non-skid safety shoes, hard
hat, or hearing protection used for appropriate
conditions will reduce personal injuries.
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
tools that have the switch on invites accidents.
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.
e. Do not overreach. Keep proper footing and
balance at all times. This enables better control
of the power tool in unexpected situations.
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.
g. if devices are provided for the connection
of dust extraction and collection
facilities, ensure these are connected
and properly used. Use of dust collection
can reduce dust-related hazards.
h. Do not let familiarity gained from frequent
use of tools allow you to become
complacent and ignore tool safety
principles. A careless action can cause
severe injury within a fraction of a second.
i. 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.
j. Avoid unintentional starting.
Prepare to begin work before turning on the tool.
k. Do not depress the spindle lock when
starting or during operation.
l. 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.
m. This product is not a toy.
Keep it out of reach of children.
n. 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.
• Do not use with Trigger 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.
o. 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.
4. power tool use and care
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.
Page 4 For technical questions, please call 1-888-866-5797. Item 58091
SaFEty OpEratiOn MaintEnancESEtup
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. Disconnect the plug from the power
source and/or remove the battery pack,
if detachable, from 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.
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 and accessories.
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.
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.
h. Keep handles and grasping surfaces
dry, clean and free from oil and grease.
Slippery handles and grasping surfaces
do not allow for safe handling and control
of the tool in unexpected situations.
5. Service
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.
b. Maintain labels and nameplates on the tool.
These carry important safety information.
If unreadable or missing, contact
Harbor Freight Tools for a replacement.
6. cut-off machine safety warnings
a. position yourself and bystanders away from
the plane of the rotating wheel. The guard
helps to protect the operator from broken wheel
fragments and accidental contact with wheel.
b. use only bonded reinforced or diamond
cut-off wheels for your power tool. Just
because an accessory can be attached to your
power tool, it does not assure safe operation.
c. 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.
d. Wheels must be used only for recommended
applications. For example: do not grind
with the side of a cut-off wheel. Abrasive
cut-off wheels are intended for peripheral
grinding, side forces applied to these
wheels may cause them to shatter.
e. always use undamaged wheel flanges that
are of correct diameter for your selected
wheel. Proper wheel flanges supporl the wheel
thus reducing the possibility of wheel breakage.
f. 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.
g. the arbour size of wheels and flanges
must properly flt the spindle of the power
tool. Wheels and flanges with arbour 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.
h. Do not use damaged wheels. Before each
use, inspect the wheels for chips and cracks.
if the power tool or wheel is dropped, inspect
for damage or install an undamaged wheel.
after inspecting and installing the wheel,
position yourself and bystanders away
from the plane of the rotating wheel and
run the power tool at maximum no load
speed for one minute. Damaged wheels will
normally break apart during this test time.
i. Wear personal protective equipment.
Depending on application, use face
shield, safety goggles or safety glasses.
as appropriate, wear dust mask, hearing
protectors, gloves and shop apron capable
of stopping small abrasive or workpiece
fragments. The eye protection must be capable
of stopping flying debris generated by various
operations. The dust mask or respirator must
be capable of filtrating particles genera.fed by
your operation. Prolonged exposure to high
intensity noise may cause hearing loss.
j. 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 wheel may fly away and cause injury
beyond immediate area of operation.
k. 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 wheel.
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SaFEtyOpEratiOnMaintEnancE SEtup
l. regularly clean the power tool’s air vents.
The motor’s fan can draw the dust inside
the housing and excessive accumulation of
powdered metal may cause electrical hazards.
m. Do not operate the power tool near flammable
materials. Do not operate the power tool
while placed on a combustible surface such
as wood. Sparks could ignite these materials.
n. Do not use accessories that require liquid
coolants. Using water or other liquid coolants
may result in electrocution or shock.
7. Kickback and related warnings
- Kickback is a sudden reaction to a pinched or
snagged rotating wheel. Pinching or snagging
causes rapid stalling of the rotating wheel which
in turn causes the uncontrolled cutting unit to
be forced upwards toward the operator.
- 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. Abrasive wheels
may also break under these conditions.
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.
a. Maintain a firm grip on the power tool
and position your body and arm to
allow you to resist kickback forces.
The operator can control upward kickback
forces, if proper precautions are taken.
b. Do not position your body in line with the
rotating wheel. If kickback occurs, it will propel
the cutting unit upwards toward the operator.
c. Do not attach a saw chain, woodcarving
blade, segmented diamond wheel with
a peripheral gap greater than 10 mm or
toothed saw blade. Such blades create
frequent kickback and loss of control.
d. Do not “jam” the 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.
e. When the wheel is binding or when
interrupting a cut for any reason, switch
off the power tool and hold the cutting unit
motionless in the material until the wheel
comes to a complete stop. never attempt
to remove the wheel from the cut while
the wheel is in motion or kickback may
occur. Investigate and take corrective actions
to eliminate the cause of wheel binding.
f. Do not restart the cutting operation in
the workpiece. Let the wheel reach full
speed and carefully re-enter the cut.
The wheel may bind, walk up or kickback if
the power tool is restarted in the workpiece.
g. Support any oversized workpiece to minimise
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.
8. 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:
a. 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 symptoms related to
vibration (such as tingling, numbness,
and white or blue fingers), seek medical
advice as soon as possible.
b. Do not smoke during use. Nicotine reduces
the blood supply to the hands and fingers,
increasing the risk of vibration-related injury.
c. Wear suitable gloves to reduce the
vibration effects on the user.
d. Use tools with the lowest vibration
when there is a choice.
e. Include vibration-free periods each day of work.
f. Grip tool as lightly as possible (while still keeping
safe control of it). Let the tool do the work.
g. To reduce vibration, maintain the tool as
explained in this manual. If any abnormal
vibration occurs, stop use immediately.
Page 6 For technical questions, please call 1-888-866-5797. Item 58091
SaFEty OpEratiOn MaintEnancESEtup
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
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.)
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.
(See 3-prong plug and Outlet.)
Double insulated tools: tools with two prong plugs
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 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.)
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.)
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.)
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.)
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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.)
6. If you are using an extension cord outdoors, make
sure it is marked with the suffix “W-A” (“W” in
Canada) to indicate it is acceptable for outdoor use.
7. Make sure 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.
taBLE a: rEcOMMEnDED MiniMuM WirE
GauGE FOr EXtEnSiOn cOrDS* (120/240 VOLt)
naMEpLatE
aMpErES
(at full load)
EXtEnSiOn cOrD
LEnGtH
25´ 50´ 75´ 100´ 150´
0 – 2.0 18 18 18 18 16
2.1 – 3.4 18 18 18 16 14
3.5 – 5.0 18 18 16 14 12
5.1 – 7.0 18 16 14 12 12
7.1 – 12.0 18 14 12 10 -
12.1 – 16.0 14 12 10 - -
16.1 – 20.0 12 10 - - -
* Based on limiting the line voltage drop to five volts at
150% of the rated amperes.
Symbology
Double Insulated
V
Volts
~
Alternating Current
a
Amperes
n
0
xxxx/min.
No Load Revolutions per Minute (RPM)
WARNING marking concerning Risk
of Eye Injury. Wear ANSI-approved
safety goggles with side shields.
Read the manual before
set-up and/or use.
WARNING marking
concerning Risk of Fire.
Do not cover ventilation ducts.
Keep flammable objects away.
WARNING marking concerning
Risk of Electric Shock.
Properly connect power cord
to appropriate outlet.
Specifications
Electrical Rating 120VAC / 60Hz / 15A
Motor No Load Speed 4200 RPM
Maximum Wheel Diameter 14" (355mm)
Arbor M10 1" (25.4mm) round
Wheel Thickness 1/8" Maximum
Cutting Capacity
Square Steel: 4-5/16" x 4-5/16"
Rectangular Steel: 6-11/16" x 3-15/16"
Angle Iron: 5-3/8" x 5-3/8"
Page 8 For technical questions, please call 1-888-866-5797. Item 58091
SaFEty OpEratiOn MaintEnancESEtup
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.
note: For additional information regarding the parts listed in the
following pages, refer to Parts List and Diagram on page 14.
Mounting
1. Ensure that the Saw is always used
on a stable and level surface.
2. Mount Saw to workbench using appropriate
hardware through the holes in the base.
power Supply requirements
120VAC / 60Hz
Functions
Base
Handle
Motor
Housing
Swing Guard
Screw
Vise Handle
trigger
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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.
tO prEVEnt SEriOuS inJury FrOM acciDEntaL OpEratiOn:
release the trigger, unplug the tool from its electrical outlet before performing
any inspection, maintenance, or cleaning procedures.
tO prEVEnt SEriOuS inJury: DO nOt OpEratE WitH any GuarD DiSaBLED,
DaMaGED, Or rEMOVED. Moving guards must move freely and close instantly.
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.
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.
3. Secure loose workpieces using a vise or clamps
(not included) to prevent movement while working.
4. There must not be objects, such as utility lines,
nearby that will present a hazard while working.
tool changing
WarninG! tO prEVEnt SEriOuS inJury: Wear heavy-duty work gloves when handling abrasive wheels.
installing a cut-Off (Grinding) Wheel
1. The Cut-Off Wheel (sold separately) MUST be:
• rated to at least 4200 RPM.
• no larger than 14" (355mm) in diameter.
• fitted with a 1" round arbor hole.
• suitable for edge grinding, not surface grinding.
• dry and clean.
• proven undamaged by inspection and
by the ring-test explained below.
2. Raise the Saw if it is locked down by pushing down
on the Handle and pulling out the Lock Ball.
3. Open the Swing Guard and tighten the
Swing Guard Screw to secure it while
working on the Cut-Off Wheel.
4. Push the Spindle Lock towards the
Fixed Guard. Rotate the Cut-Off Wheel
until the Spindle Lock slides into place.
5. While continuing to hold down the
Spindle Lock, loosen the Arbor Bolt.
6. Remove the Arbor Bolt, the Flange Washer,
the Outer Flange, and the
Cut-Off Wheel. See Figure a.
cut-Off
Wheel
Outer
Flange
Flange
Washer
arbor
Bolt
Figure a: removing cut-Off Wheel
7. Closely inspect the new wheel before mounting.
Perform a ring-test on the wheel as follows:
a. Suspend wheel using a dowel or
finger through the arbor hole.
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 Figure B).
Page 10 For technical questions, please call 1-888-866-5797. Item 58091
SaFEty OpEratiOn MaintEnancESEtup
tap
Wheel
Here
45°45° 45°45°
45°45° 45°45°
Hang
Wheel
from
Dowel
V V
E E
r r
t t
i i
c c
a a
LL
c c
E E
n n
t t
E E
rr
Figure B: cut-Off Wheel ring-test
c. Rotate the wheel 90° and repeat the test
until the entire wheel has been checked.
d. An undamaged wheel will give a
clear tone. If cracked, there will be a
dead sound and not a clear ring.
8. Replace with the new Cut-Off Wheel, and
reassemble the parts shown in Figure a.
The concave side of the Outer Flange
must face the Wheel. See Figure c.
arbor Bolt
Flange
Washer
Outer
Flange
cut-off cut-off
WheelWheel
inner Flange
Figure c: cut-Off Wheel Hardware
9. 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.
WarninG! to prevent serious injury:
Gaskets must be used for all
grinding wheels they are provided with.
Gaskets help prevent grinding wheel damage
and wheel slippage, causes of wheel failure.
10. While holding the Spindle Lock, tighten the Arbor
Bolt.
WarninG: to prevent serious injury: Do not
overtighten the arbor Bolt. Overtightening
can damage the wheel, causing wheel failure.
11. LOOSEN THE SWING GUARD SCREW
and make sure that the Swing Guard moves
freely back into place before operation.
12. cautiOn! Adjust the Cutting Depth
whenever replacing a worn wheel.
cutting Depth adjustment
1. Loosen the Nut on the Depth Adjustment Bolt.
2. Turn the Depth Adjustment Bolt to change
the depth so that the cut-off wheel will not
contact the base at any time during cutting.
3. After adjustment, tighten the Nut down against
the Bracket to lock the adjustment in place.
Setting and testing
1. Ensure the Cut-Off Wheel is properly
attached to the Saw and the depth
adjustment has been properly set.
2. Ensure the Saw is properly mounted to the
workbench or secured to a stable level surface.
3. Connect the Saw’s Power Cord to 120VAC grounded
outlet. Slide the Trigger Lock and squeeze the
Trigger. Run the tool for at least 30 seconds.
4. If abnormal noise/vibration occurs or the
Cut-Off Wheel slips, have the problem
corrected before further use.
5. Release Trigger and unplug Saw.
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General instructions for use
tO prEVEnt SEriOuS inJury:
DO nOt OpEratE WitH any GuarD DiSaBLED, DaMaGED, Or rEMOVED.
Moving guards must move freely and close instantly.
Swing Guard Screw MuSt be loose before operation.
WarninG! tO prEVEnt SEriOuS inJury: Wear appropriate hearing
protection and anSi-approved safety goggles during use.
1. Using the vise, secure your workpiece and,
if necessary, adjust the angle of the cut.
2. Raise the Saw by pushing down on the
Handle and pulling out the Lock Ball.
3. Be sure the Trigger is in the off-position
then plug the Power Cord into the
nearest 120 VAC grounded outlet.
4. Slide the Trigger Lock and squeeze
the Trigger to start the Saw. Allow the
Cut-Off Wheel to attain full speed.
5. Make sure that all guards are in place and in
proper working order and that all adjustment
knobs are tight before operation.
6. With one hand on the Handle and the other
hand clear, slowly bring the Cut-Off Wheel
down onto the workpiece, letting the Saw
do the work. Do not apply excessive force.
7. If the Cut-Off Wheel does not cut all
the way through the workpiece:
a. Raise the Saw and release the Trigger.
b. Unplug the Saw.
c. Wait until the Cut-Off Wheel comes to a
full stop then remove the workpiece.
d. Set the depth adjustment to a deeper setting
(see Cutting Depth Adjustment on page 10).
e. After adjusting the depth, bring the
Saw all the way down to make sure the
Cut-Off Wheel doesn’t contact the Base.
f. If it does contact any part of the Base,
re-adjust the depth so it doesn’t.
g. Repeat the cutting process starting with step 1.
WarninG! tO prEVEnt SEriOuS inJury:
The tool will restart automatically if stalled.
8. Once the cut is completed, turn off the Saw
by releasing the Trigger and unplug the unit.
Do not attempt to remove the workpiece until
the Cut-Off Wheel has stopped moving.
9. To prevent accidents, after use turn off the tool and
unplug it. Lock it down by pushing it down as far as
it will go and then pushing in the Lock Ball. Clean,
then store the tool indoors out of children’s reach.
Setting up an angle cut
1. To cut at various angles (up to 45º), adjust the Angle
Scale by loosening the two Bolts.
2. Adjust the Angle Scale to the desired
setting and then tighten both Bolts.
3. To reposition the Angle Scale for a wider workpiece,
remove both of the Bolts, and reattach the
Angle Scale at the upper two screw holes.
BoltsBolts
angle
Scale
upper
two
Screw
Holes
angle cut Set up
using the Vise
1. After setting the cutting angle, secure
loose work pieces using the vise to
prevent movement while working:
a. Put the Quick Release in the position
and push the Vise Handle until the
vise jaw is up against the workpiece.
b. Tighten the Vise Handle to secure the workpiece.
note: To cut the workpiece at an angle, see
Setting Up an Angle Cut on page 11.
2. To release the workpiece, loosen the Vise
Handle a few turns, lift up the Quick Release
and pull the Vise Handle open.
Page 12 For technical questions, please call 1-888-866-5797. Item 58091
SaFEty OpEratiOn MaintEnancESEtup
Maintenance and Servicing instructions
procedures not specifically explained in this manual must
be performed only by a qualified technician.
tO prEVEnt SEriOuS inJury FrOM acciDEntaL OpEratiOn:
Make sure that the trigger is in the off-position and unplug the tool from its
electrical outlet before performing any procedure in this section.
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
condition of the tool. Check for:
• loose hardware,
• misalignment or binding of moving parts,
• cracked or broken parts,
• damaged electrical wiring, and
• any other condition that may
affect its safe operation.
2. aFtEr uSE, wipe external surfaces
of the tool with clean cloth.
3. Periodically, wear ANSI-approved
safety goggles and NIOSH-approved
breathing protection and blow dust and grit out
of the motor vents using dry compressed air.
4. WarninG! tO prEVEnt SEriOuS
inJury: if the supply cord of this power
tool is damaged, it must be replaced only
by a qualified service technician.
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. Keep storage area dry and above
freezing. Any grinding or cut-off wheels exposed to
humidity or freezing temperatures must not be used.
Page 13For technical questions, please call 1-888-866-5797.Item 58091
SaFEtyOpEratiOnMaintEnancE SEtup
troubleshooting
problem possible causes Likely Solutions
Tool will not start. 1. Cord not connected.
2. No power at outlet.
3. Tool’s thermal reset breaker
tripped (if equipped).
4. Internal damage or wear.
(Carbon brushes or
Trigger, for example.)
1. Check that cord is plugged in.
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. Turn off tool and allow to cool.
Press reset button on tool.
4. Have technician service tool.
Tool operates slowly. 1. Forcing tool to work too fast.
2. Extension cord too long or cord
diameter too small.
1. Allow tool to work at its own rate.
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 on page 6.
Performance
decreases over time.
1. Wheel worn.
2. Carbon brushes worn
or damaged.
1. Replace wheel.
2. Have qualified technician replace brushes.
Excessive noise
or rattling.
Internal damage or wear. (Carbon
brushes or bearings, for example.)
Have technician service tool.
Overheating. 1. Forcing tool to work too fast.
2. Wheel misaligned.
3. Wheel worn or dull.
4. Blocked motor housing vents.
5. Motor being strained by long or
small diameter extension cord.
1. Allow tool to work at its own rate.
2. Check and correct wheel alignment.
3. Replace wheel.
4. Wear ANSI-approved safety goggles and
NIOSH-approved dust mask/respirator while
blowing dust out of motor using compressed air.
5. 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 on page 6.
Follow all safety precautions whenever diagnosing or servicing the tool.
Disconnect power supply before service.
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
Page 14 For technical questions, please call 1-888-866-5797. Item 58091
SaFEty OpEratiOn MaintEnancESEtup
parts List and Diagram
parts List
part Description Qty
1 Cross Pin 1
2 Sleeve 1
3 Big Torsion Spring 1
4 Flat Washer 2
5 Nut, M10 1
6 Base 1
7 Rubber Feet 3
8 Bolt, M8 x 12 & Spring Washer, 8 2
9 Vise Handle 1
10 Flush Head Rivet, M5 x 24 1
11 Screw Rod 1
12 Nut Seat 1
13 Cylindrical Pin Ø 6 x 32 1
14 Quick Release 1
15 Wrench, S8 1
16 Clamp Base 1
17 Screw Pin 1
18 Flat Washer, Ø8 x Ø16 x 0.8 1
19 Open Pin, Ø 2.5 x 25 1
20 Angle Scale 1
21 Bolt, M10 x 20 2
22 Lock Ball 1
23 Seal Ring, Ø5 x 1.8 1
24 Nut ,M6 3
25 Self-Lock Pin 1
26 Depth Adjustment Bolt, M10 x 30 1
27 Nut, M10 1
28 Bolt, M6 x 16 l
29 Bracket 1
30 Bolt, M5 x 12 1
31 Bolt, M5 x 45 4
32 Spindle Lock, Bolt, ST4.8 x 75 2
33 Limit Pin 1
34 Self-Lock Pin Spring 1
35 Key, 4 x 5 x 13 1
36 Chafing Cap 2
37 Bolt, M5 x 16 4
38 Rubber Sleeve 1
39 Fixed Bolt 1
40 Swing Guard Screw 1
41 Paper Spacer 1
42 Swing Guard 1
43 Arbor Bolt, M10 x 20 1
44 Plate Cover 1
part Description Qty
45 Outer Flange 1
46 Cut-Off Wheel (sold separately) 0
47 Inner Flange 1
48 Fixed Guard 1
49 Ring, 15 x 1.8 1
50 Inner Plate Sleeve 1
51 Output Axis 1
52 Bearing, 6203-2RS 1
53 Front Cover 1
54 Seal Ring, Ø63 x 1.5 1
55 Big Gear 1
56 Bearing, 6000-2RS 1
57 Support Arm 1
58 Screw, M5 x 25 1
59 Lock Nut, M5 1
60 Bolt, M5 x 35 2
61 Rubber Pin 1
62 Bearing, 6202-2RS 1
63 Rotor 1
64 Bearing, 629-2RS 1
65 Rubber Bearing Sleeve 1
66 Block Circle 1
67 Stator 1
68 Motor Housing 1
69 Carbon Brush 2
70 Brush Holder 2
71 Brush Holder Cover 2
72 Bolt, M6 x 10 2
73 Motor Housing Cover 1
74 Bolt, ST4.2 x 14 11
75 Bolt, ST4.2 x 20 1
76 Upper Handle Mount 1
77 Handle 1
78 Trigger 1
79 Cable Cover 1
80 Power Cable 1
81 Lower Handle Mount 1
82 Nut, M5 3
83 Trigger Lock 1
84 Tension Disc 1
85 External Circlips 17 1
86 External Circlips 15 1
87 Wrench Fixed Ring 1
88 Bolt, M5 x 16 1
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. Specify UPC 193175432292 when ordering parts.
Page 15For technical questions, please call 1-888-866-5797.Item 58091
SaFEtyOpEratiOnMaintEnancE SEtup
assembly Diagram
26541 agoura road • calabasas, ca 91302 • 1-888-866-5797
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.
