Save This ManualKeep 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
There is an increased risk of electric shock
if your body is earthed or grounded.
c. U&%8&$%*Z/&#*%/&)*(%$&&7#%$&%(,"8%&(%)*$%
4&89"$"&8#1%Water entering a power tool
will increase the risk of electric shock.
d. U&%8&$%,+'#*%$.*%4&(91%M*W*(%'#*%$.*%4&(9%
2&(%4,((V"83=%/'77"83%&(%'8/7'33"83%$.*%/&)*(%
$&&71%Y**/%4&(9%,),V%2(&5%.*,$=%&"7=%#.,(/%
*93*#%&(%5&W"83%/,($#1%Damaged or entangled
cords increase the risk of electric shock.
e. Q.*8%&/*(,$"83%,%/&)*(%$&&7%&'$9&&(#=%
'#*%,8%*Z$*8#"&8%4&(9%#'"$,+7*%2&(%&'$9&&(%
'#*1%Use of a cord suitable for outdoor
use reduces the risk of electric shock.
f. L2%&/*(,$"83%,%/&)*(%$&&7%"8%,%9,5/%7&4,$"&8%
"#%'8,W&"9,+7*=%'#*%,%3(&'89%2,'7$%4"(4'"$%
"8$*(('/$*(%[R;OL\%/(&$*4$*9%#'//7V1%Use of
a GFCI reduces the risk of electric shock.
3. J*(#&8,7%#,2*$V
a. E$,V%,7*($=%),$4.%).,$%V&'%,(*%9&"83%,89%
'#*%4&55&8%#*8#*%).*8%&/*(,$"83%,%
/&)*(%$&&71%U&%8&$%'#*%,%/&)*(%$&&7%)."7*%
V&'%,(*%$"(*9%&(%'89*(%$.*%"827'*84*%&2%
9('3#=%,74&.&7%&(%5*9"4,$"&81%%A moment
of inattention while operating power tools
may result in serious personal injury.
b. P#*%/*(#&8,7%/(&$*4$"W*%*<'"/5*8$1%F7),V#%
)*,(%*V*%/(&$*4$"&81%%Protective equipment
such as dust mask, non-skid safety shoes, hard
hat, or hearing protection used for appropriate
conditions will reduce personal injuries.
c. J(*W*8$%'8"8$*8$"&8,7%#$,($"831%68#'(*%$.*%
#)"$4.%"#%"8%$.*%&22?/&#"$"&8%+*2&(*%4&88*4$"83%
$&%/&)*(%#&'(4*%,890&(%+,$$*(V%/,4X=%/"4X"83%
'/%&(%4,((V"83%$.*%$&&71%Carrying power tools
with your finger on the switch or energizing power
tools that have the switch on invites accidents.
d. K*5&W*%,8V%,9]'#$"83%X*V%&(%)(*84.%
+*2&(*%$'(8"83%$.*%/&)*(%$&&7%&81%%A wrench
or a key left attached to a rotating part of the
power tool may result in personal injury.
Loose clothes, jewelry or long hair
can be caught in moving parts.
g. L2%9*W"4*#%,(*%/(&W"9*9%2&(%$.*%4&88*4$"&8%
&2%9'#$%*Z$(,4$"&8%,89%4&77*4$"&8%
2,4"7"$"*#=%*8#'(*%$.*#*%,(*%4&88*4$*9%
,89%/(&/*(7V%'#*91%%Use of dust collection
can reduce dust-related hazards.
h. U&%8&$%7*$%2,5"7",("$V%3,"8*9%2(&5%2(*<'*8$%
'#*%&2%$&&7#%,77&)%V&'%$&%+*4&5*%
4&5/7,4*8$%,89%"38&(*%$&&7%#,2*$V%
/("84"/7*#1%%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. J&)*(%$&&7%'#*%,89%4,(*
a. U&%8&$%2&(4*%$.*%/&)*(%$&&71%P#*%$.*%4&((*4$%
/&)*(%$&&7%2&(%V&'(%,//7"4,$"&81%%The correct
power tool will do the job better and safer
at the rate for which it was designed.
U*/*89"83%&8%,//7"4,$"&8=%'#*%2,4*%
#."*79=%#,2*$V%3&337*#%&(%#,2*$V%37,##*#1%
F#%,//(&/(",$*=%)*,(%9'#$%5,#X=%.*,("83%
/(&$*4$&(#=%37&W*#%,89%#.&/%,/(&8%4,/,+7*%
&2%#$&//"83%#5,77%,+(,#"W*%&(%)&(X/"*4*%
2(,35*8$#1 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. Y**/%+V#$,89*(#%,%#,2*%9"#$,84*%,),V%
2(&5%)&(X%,(*,1%F8V&8*%*8$*("83%$.*%
)&(X%,(*,%5'#$%)*,(%/*(#&8,7%/(&$*4$"W*%
*<'"/5*8$1 Fragments of workpiece or of a
broken wheel may fly away and cause injury
beyond immediate area of operation.
k. J&#"$"&8%$.*%4&(9%47*,(%&2%$.*%#/"88"83%
,44*##&(V1%If you lose control, the cord may
be cut or snagged and your hand or arm
may be pulled into the spinning wheel.
The motor’s fan can draw the dust inside
the housing and excessive accumulation of
powdered metal may cause electrical hazards.
m. U&%8&$%&/*(,$*%$.*%/&)*(%$&&7%8*,(%27,55,+7*%
5,$*(",7#1%U&%8&$%&/*(,$*%$.*%/&)*(%$&&7%
)."7*%/7,4*9%&8%,%4&5+'#$"+7*%#'(2,4*%#'4.%
,#%)&&91 Sparks could ignite these materials.
n. U&%8&$%'#*%,44*##&("*#%$.,$%(*<'"(*%7"<'"9%
4&&7,8$#1%Using water or other liquid coolants
may result in electrocution or shock.
7. Y"4X+,4X%,89%(*7,$*9%),(8"83#
- 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.
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. Q.*8%$.*%).**7%"#%+"89"83%&(%).*8%
"8$*(('/$"83%,%4'$%2&(%,8V%(*,#&8=%#)"$4.%
&22%$.*%/&)*(%$&&7%,89%.&79%$.*%4'$$"83%'8"$%
5&$"&87*##%"8%$.*%5,$*(",7%'8$"7%$.*%).**7%
4&5*#%$&%,%4&5/7*$*%#$&/1%M*W*(%,$$*5/$%
$&%(*5&W*%$.*%).**7%2(&5%$.*%4'$%)."7*%
$.*%).**7%"#%"8%5&$"&8%&(%X"4X+,4X%5,V%
&44'(1%Investigate and take corrective actions
The wheel may bind, walk up or kickback if
the power tool is restarted in the workpiece.
g. E'//&($%,8V%&W*(#"`*9%)&(X/"*4*%$&%5"8"5"#*%
$.*%("#X%&2%).**7%/"84."83%,89%X"4X+,4X1%
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. !"+(,$"&8%E,2*$V
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.
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.
[E**%d?J(&83%J7'3%,89%I'$7*$1\
3. The tool must be plugged into an appropriate outlet,
d?J(&83%J7'3%,89%I'$7*$
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.
[E**%d?J(&83%J7'3%,89%I'$7*$1\
properly installed and grounded in accordance
with all codes and ordinances. The plug and outlet
should look like those in the preceding illustration.
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
I'$7*$#%2&(%e?J(&83%J7'3
120 volt outlets shown in the preceding illustration.%%%
[E**%I'$7*$#%2&(%e?J(&83%J7'31\
6Z$*8#"&8%O&(9#
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. [E**%G,+7*%F1\
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. [E**%G,+7*%F1\
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. [E**%G,+7*%F1\
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. [E**%G,+7*%F1\
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.
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.
• 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.
6. Remove the Arbor Bolt, the Flange Washer,
the Outer Flange, and the
Cut-Off Wheel. See ;"3'(*%F1
O'$?I22%
Q.**7
;"3'(*%F-%%K*5&W"83%O'$?I22%Q.**7
I'$*(
;7,83*
;7,83*
Q,#.*(
F(+&(%
S&7$
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.
7. Closely inspect the new wheel before mounting.
Perform a ("83?$*#$ 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 ;"3'(*%S).
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 ;"3'(*%F.
The concave side of the Outer Flange
must face the Wheel. See ;"3'(*%O.
O%O%
6%6%
M%M%
G%G%
6%6%
KK
_,83%
Q.**7%
2(&5%
U&)*7
F(+&(%S&7$
;7,83*%%
Q,#.*(
O'$?&22%O'$?&22%
Q.**7Q.**7
I'$*(%%
;7,83*
L88*(%;7,83*
;"3'(*%O-%%O'$?I22%Q.**7%_,(9),(*
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.
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.
QFKMLMRm%%GI%JK6!6MG%E6KLIPE%LMlPKH-
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.
EF;6GHIJ6KFGLIMNFLMG6MFMO6E6GPJ
E*$$"83%P/%,8%F837*%O'$
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.
P#"83%$.*%!"#*
1. After setting the cutting angle, secure
loose work pieces using the vise to
prevent movement while working:
a. Put the Quick Release in the position
and push the Vise Handle until the
vise jaw is up against the workpiece.
b. Tighten the Vise Handle to secure the workpiece.
P//*(%
G)&%
E4(*)%
_&7*#
F837*
E4,7*
F837*%O'$%E*$%P/
M&$*- 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.
1. S6;IK6%6FO_%PE6= 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. F;G6K%PE6= wipe external surfaces
of the tool with clean cloth.
F44*##&(V%E$&(,3*%,89%_,897"83
1. Handle accessories carefully to prevent
dropping or bumping. Do not use wheels
that have been dropped or bumped.
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.
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.
4. Internal damage or wear.
(Carbon brushes or
Trigger, for example.)
Tool operates slowly. 1. Forcing tool to work too fast.
2. Extension cord too long or cord
diameter too small.
Performance
decreases over time.
Excessive noise
or rattling.
Overheating.1. Forcing tool to work too fast.
1. Wheel worn.
2. Carbon brushes worn
or damaged.
Internal damage or wear. (Carbon
brushes or bearings, for example.)
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. 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.
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.
1. Replace wheel.
2. Have qualified technician replace brushes.
Have technician service tool.
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.
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
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.