Harbor Freight Tools Welder 98871 User Manual

90 AMP FLUX WIRE WELdER  
Model 98871  
SEt UP And OPERAtIng InStRUctIOnS  
Visit our website at: http://www.harborfreight.com  
Read this material before using this product.  
Failure to do so can result in serious injury.  
SAVE thIS MAnUAL.  
©
®
Copyright 2008 by Harbor Freight Tools . All rights reserved. No portion of this manual or any artwork  
contained herein may be reproduced in any shape or form without the express written consent of  
Harbor Freight Tools. 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 10d  
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d.do not abuse the cord. never use  
the cord for carrying, pulling or  
e.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.  
unplugging the welder. 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 welder outdoors,  
use an extension cord suitable for  
outdoor use. Use of a cord suitable for  
outdoor use reduces the risk of electric  
shock.  
4. Welder use and care  
a.do not use the welder if the switch  
does not turn it on and off. Any welder  
that cannot be controlled with the switch  
is dangerous and must be repaired.  
f. If operating a welder 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.  
b.disconnect the plug from the  
power source before making any  
adjustments, changing accessories,  
or storing welders. Such preventive  
safety measures reduce the risk of  
starting the welder accidentally.  
3. Personal safety  
a.Stay alert, watch what you are  
doing and use common sense when  
operating a welder. do not use a  
welder while you are tired or under  
the influence of drugs, alcohol or  
medication. A moment of inattention  
while operating welders may result in  
serious personal injury.  
c.Store idle welders out of the reach  
of children and do not allow persons  
unfamiliar with the welder or these  
instructions to operate the welder.  
Welders are dangerous in the hands of  
untrained users.  
b.Use safety equipment. Always wear  
ANSI-approved safety glasses and arc  
shaded, impact safety full face shield.  
Safety equipment such as NIOSH-  
approved respirator, heavy-duty work  
gloves, non-skid safety shoes, or  
d.Maintain welders. check for  
misalignment or binding of moving  
parts, breakage of parts and any  
other condition that may affect the  
welder’s operation. If damaged,  
have the welder repaired before use.  
Many accidents are caused by poorly  
maintained welders.  
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  
or moving the welder. Carrying or  
energizing welders that have the switch  
on invites accidents.  
e.Use the welder and accessories in  
accordance with these instructions,  
taking into account the working  
conditions and the work to be  
performed. Use of the welder for  
operations different from those intended  
could result in a hazardous situation.  
d.do not overreach. Keep proper  
footing and balance at all times. This  
enables better control of the welder in  
unexpected situations.  
SKU 98871  
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5. Service  
• Leather leggings, fire resistant shoes or  
boots should be worn when using this  
product. Do not wear pants with cuffs,  
shirts with open pockets, or any clothing  
that can catch and hold molten metal or  
sparks.  
a.have your welder serviced by a  
qualified repair person using only  
identical replacement parts. This will  
ensure that the safety of the welder is  
maintained.  
Keep clothing free of grease, oil,  
solvents, or any flammable substances.  
Wear dry, insulating gloves and  
protective clothing.  
Welder Safety Warnings  
1. Maintain labels and nameplates on  
the Welder. These carry important  
information. If unreadable or missing,  
contact Harbor Freight Tools for a  
replacement.  
Wear an approved head covering to  
protect the head and neck. Use aprons,  
cape, sleeves, shoulder covers, and  
bibs designed and approved for welding  
and cutting procedures.  
2. Maintain a safe working environment.  
Keep the work area well lit. Make  
sure there is adequate surrounding  
workspace. Always keep the work area  
free of obstructions, grease, oil, trash,  
and other debris.  
When welding/cutting overhead or in  
confined spaces, wear flame resistant  
ear plugs or ear muffs to keep sparks  
out of ears.  
7.  
Prevent accidental fires.  
Remove any combustible  
material from the work area.  
3. Avoid unintentional starting. Make  
sure you are prepared to begin work  
before turning on the Welder.  
When possible, move the work to a  
location well away from combustible  
materials. If relocation is not possible,  
protect the combustibles with a cover  
made of fire resistant material.  
4. Unplug before performing  
maintenance. Unplug the Welder from  
its electrical outlet before performing any  
inspection, maintenance, or cleaning  
procedures.  
Remove or make safe all combustible  
materials for a radius of 35 feet (10  
meters) around the work area. Use a  
fire resistant material to cover or block  
all open doorways, windows, cracks,  
and other openings.  
5. never leave the Welder unattended  
while energized. Turn power off if you  
have to leave the Welder.  
6.  
Prevent eye injury and  
burns. Wearing and using  
ANSI-approved personal  
• Enclose the work area with portable fire  
resistant screens. Protect combustible  
walls, ceilings, floors, etc., from sparks  
and heat with fire resistant covers.  
safety clothing and safety  
devices reduce the risk for injury.  
Wear ANSI-approved safety impact  
eye goggles underneath welding eye  
protection featuring at least a number  
10 shade lens rating, such as the one  
included.  
If working on a metal wall, ceiling, etc.,  
prevent ignition of combustibles on the  
other side by moving the combustibles  
to a safe location. If relocation of  
combustibles is not possible, designate  
someone to serve as a fire watch,  
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SKU 98871  
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equipped with a fire extinguisher, during  
the cutting process and for at least one  
half hour after the cutting is completed.  
• Work in a confined area only if it is  
well-ventilated, or while wearing an air-  
supplied respirator.  
Do not weld or cut on materials having  
a combustible coating or combustible  
internal structure, as in walls or ceilings,  
without an approved method for  
eliminating the hazard.  
Follow OSHA guidelines for Permissible  
Exposure Limits (PEL’s) for various  
fumes and gases.  
Follow the American Conference of  
Governmental Industrial Hygienists  
recommendations for Threshold Limit  
Values (TLV’s) for fumes and gases.  
Do not dispose of hot slag in containers  
holding combustible materials. Keep a  
fire extinguisher nearby and know how  
to use it.  
Have a recognized specialist in  
Industrial Hygiene or Environmental  
Services check the operation and air  
quality and make recommendations for  
the specific welding or cutting situation.  
After spot welding, make a thorough  
examination for evidence of fire. Be  
aware that easily visible smoke or flame  
may not be present for some time after  
the fire has started. Do not weld or cut  
in atmospheres containing dangerously  
reactive or flammable gases, vapors,  
liquids, and dust. Provide adequate  
ventilation in work areas to prevent  
accumulation of flammable gases,  
vapors, and dust. Do not apply heat to  
a container that has held an unknown  
substance or a combustible material  
whose contents, when heated, can  
produce flammable or explosive vapors.  
Clean and purge containers before  
applying heat. Vent closed containers,  
including castings, before preheating,  
welding, or cutting.  
WARnIng  
InhALAtIOn hAzARd:  
Welding and Plasma cutting Produce  
tOXIc FUMES.  
Exposure to welding or cutting exhaust  
fumes can increase the risk of developing  
certain cancers, such as cancer of the  
larynx and lung cancer. Also, some  
diseases that may be linked to exposure to  
welding or plasma cutting exhaust fumes  
are:  
8. Avoid overexposure to fumes and  
gases. Always keep your head out of  
the fumes. Do not breathe the fumes.  
Use enough ventilation or exhaust, or  
both, to keep fumes and gases from your  
breathing zone and general area.  
• Early onset of Parkinson’s Disease  
• Heart disease  
• Ulcers  
• Damage to the reproductive organs  
• Inflammation of the small intestine or  
stomach  
• Kidney damage  
• Respiratory diseases such as  
emphysema, bronchitis, or pneumonia  
Where ventilation is questionable,  
have a qualified technician take an air  
sampling to determine the need for  
corrective measures. Use mechanical  
ventilation to improve air quality. If  
engineering controls are not feasible,  
use an approved respirator.  
Use natural or forced air ventilation and  
wear a respirator approved by NIOSH to  
protect against the fumes produced to  
reduce the risk of developing the above  
illnesses.  
SKU 98871  
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9. do not touch live electrical parts.  
Wear dry, insulating gloves. Do not touch  
welding wire or gun with bare hand. Do  
not wear wet or damaged gloves.  
15. 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.)  
10. Protect yourself from electric shock.  
Do not use outdoors. Insulate yourself  
from the workpiece and ground. Use  
nonflammable, dry insulating material  
if possible, or use dry rubber mats, dry  
wood or plywood, or other dry insulating  
material big enough to cover your full  
area of contact with the work or ground.  
16. 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.  
11. People with pacemakers should  
consult their physician(s) before  
using this product. Electromagnetic  
fields in close proximity to a heart  
pacemaker could cause interference to,  
or failure of the pacemaker.  
SAVE thESE  
InStRUctIOnS.  
12. Use care not to touch the welding tip  
to grounded material whenever the  
unit is plugged in. this unit is what  
is referred to as a “hot tip” welder,  
meaning that current is available to  
the wire at all times that the power  
Switch (7a) is in the On position.  
gROUndIng  
tO PREVEnt  
ELEctRIc ShOcK  
And dEAth FROM IncORREct  
gROUndIng WIRE  
Electric shock, fire, or burns may happen  
if appropriate precautions are not taken.  
cOnnEctIOn:  
Check with a qualified electrician  
if you are in doubt as to whether  
the outlet is properly grounded.  
have a plug installed by a  
certified electrician. Do not use  
the welder 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.  
13. Ensure that the unit is placed on a  
stable location before use. If this unit  
falls while plugged in, severe injury,  
electric shock, or fire may result.  
14. This product, when used for welding  
and similar applications, contains or  
produces a chemical known to the State  
of California to cause cancer and birth  
defects (or other reproductive harm).  
(California Health & Safety Code §  
25249.5, et seq.)  
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SKU 98871  
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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.  
grounded Welders  
1. The grounding prong in the plug is  
connected through the green wire inside  
the cord to the grounding system in  
the welder. The green wire in the cord  
must be the only wire connected to the  
welder’s grounding system and must  
never be attached to an electrically “live”  
terminal.  
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.  
2. The welder must be plugged into an  
appropriate outlet, properly installed and  
grounded in accordance with all codes  
and ordinances.  
SyMBOLOgy  
Extension cords  
Wire Feed (Speed)  
1. If an extension cord is used, it must  
have the following wire size: up to 30  
feet, use 10 AWg size wire; 30 to 50  
feet, use 8 AWg wire; Over 50 feet,  
use 6 AWg wire.  
Workpiece Ground Cable  
Gun Cable  
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 welder damage.  
Overheat Shutdown Indicator  
Cooling Fan  
Housing Ground Point  
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.  
Volts Alternating Current  
V~  
A
OcV  
KVA  
Amperes  
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.  
Open Circuit Voltage  
Kilovolt Amperes  
(Volts / 1000 * Amperes)  
Inches Per Minute  
5. If you are using one extension cord  
for more than one welder, add the  
nameplate amperes and use the sum to  
determine the required minimum cord  
size.  
IPM  
AWg  
American Wire Gauge  
SKU 98871  
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SPEcIFIcAtIOnS  
120 V~, 24 A (peak), 1-phase  
connect to at least 20 A dedicated circuit  
dcEn  
Power Input  
MIn: 63 ~ 68 A  
MAX: 79 ~ 90 A  
Welding Output  
hOt tIP welder  
22 gauge (0.03”) to 3/16” (0.19”) mild steel only  
not for welding aluminum or stainless steel  
25% at MAX setting  
capacity  
duty cycle  
45% at MIn setting  
(See explanation on page 16)  
Open circuit Voltage  
KVA  
31  
3.6  
Wire Speed  
101 – 342 IPM  
ground: 6 AWg, 6’  
cable Sizes  
gun: 8 AWg, 6’  
Power: 3-wire, 14 AWg  
Installed tip will accept .030” to .035” FLUX cORE wire  
4” diameter / 2 lb. spool  
2 A 250 V tube fuse (see page 27)  
Spare Welder tip (for .030” to .035” wire)  
Welding Face Shield  
Welder tips / Wire Size  
Wire Spool capacity  
Internal Fuse  
Accessories  
combination Wire Brush / chipping hammer  
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.  
Page 8  
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SEtUP  
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 off and unplug the welder before assembly.  
Face Shield (38) Assembly  
Round  
tab  
Attach the handle to the Face Shield (38)  
B
B
by lining up the two rectangular tabs on  
the handle with the corresponding holes in  
the face shield and  
A
A
A. press the tabs through the holes and  
then  
handle  
Face  
Shield  
(viewed from front)  
B. slide the tabs forward from the back,  
locking the round tab in place.  
cover (31) Assembly  
Screw  
(29)  
handle (30)  
notch drops  
into slot on  
cover here  
1. Slide the Handle (30) into the slot on the  
Cover (31) from the front.  
The notch on the back of the Handle  
should drop into the slot in the Cover.  
Both ends of the Handle should lay flush  
against the top of the Cover.  
cover  
(31)  
Then, secure using Screw (29) as shown.  
Washer  
(40)  
cover  
Latch (8)  
nut  
(41)  
2. Attach the Cover Latch (8) to the front of  
the Base Frame (14) using the Bolt (42),  
Washer (40), Lock Washer (50) and Nut  
(41) as shown.  
Lock  
Washer (50)  
Bolt  
(42)  
SKU 98871  
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Wire Spool (27) Installation  
6
MIn  
On  
7
9
8
1. turn the welder OFF and unplug it  
before proceeding.  
MAX  
OFF  
10  
SPEEd  
MP FLUX WIRE WELdER  
120 V~  
60 hz  
cover (31)  
cover  
Latch (8)  
2. Press in the Cover Latch (8) on the front  
of the handle, then open the Cover (31).  
Wire  
Spool  
(27)  
Wing nut (25)  
3. Remove the Wing Nut (25) and the Spool  
Retaining Nut (26). If replacing a Spool,  
remove the old Spool and all remaining  
wire from the liners.  
Spool Retaining nut (26)  
Wire Spool (27)  
4. Make sure the Spool Spring (24) is in  
place on the Spool Spindle (28).  
Place the new flux core Wire Spool over  
the Spool Spindle (28) and on top of the  
Spool Spring (24) as illustrated.  
to prevent wire feed problems,  
set the Spool so that it will unwind  
counterclockwise.  
Spool Spring (24)  
Spool Spindle (28)  
5. Secure Spool in place with the Spool  
Retaining Nut (26), then the Wing Nut  
(25).  
wire must  
unwind this  
direction  
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Feed Swing  
Arm (36) tensioner (37)  
Feed  
6. Turn the Feed Tensioner (37) knob  
counterclockwise to loosen it enough to  
pull it up, releasing tension.  
Do not loosen the Tensioner knob too  
much, or the Tensioner will come apart.  
Then, swing the Feed Swing Arm (36)  
out.  
7. Compare the wire diameter marked on  
the Wire Spool (27) with the stamped  
number on the top of the Feed Roller  
(34). The Roller’s groove size must be  
compatible with the wire diameter -  
.8mm rollers also work with .030” wire &  
.9mm rollers also work with .035” wire.  
If it is not compatible or the number on  
the Roller is hidden:  
A
Screws (45),  
Washers (46)  
A. Remove the Screws (45) and Washers  
B
(46) from the Feed Roller Bracket (44).  
Feed Roller  
Bracket (44)  
B. Remove the Feed Roller Bracket.  
Flip the Feed Roller (34) as needed and  
confirm that the number facing up is the  
same as the wire diameter on the Spool.  
c
C.Reassemble using the Feed Roller  
Feed  
Roller (34)  
Bracket, Washers, and Screws.  
IMPORtAnt:  
Securely hold onto the end of the welding  
wire and keep tension on it during the  
following steps.  
If this is not done, the welding wire will  
unravel and create a tangled “bird’s nest”,  
wasting wire.  
Wire  
Liner  
(4)  
hOLd WIRE  
SEcURELy  
welding  
wire  
8. Cut off all bent and crimped wire. Make  
sure that the cut end has no burrs or  
sharp edges; cut again if needed.  
Wire  
Spool  
9. Keep tension on the wire and guide at  
least 12 inches of wire into the Wire  
Liners.  
leader  
wire liner  
SKU 98871  
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Feed  
tensioner (37)  
10. Swing the Wire Feed Swing Arm (36)  
closed, and swing the Feed Tensioner  
(37) across the tip of the Arm, to latch it.  
Make sure the Welding Wire is resting  
in the top groove of the Feed Roller  
(34), then turn the Feed Tensioner knob  
clockwise a couple of turns.  
Feed Swing  
Arm (36)  
After the wire is held by the Tensioner,  
you may release it.  
gun  
11. Pull the Nozzle (3) to remove it.  
12. Using the third oval hole on the Multi-  
wrench (43), turn the Contact Tip (2b)  
counterclockwise and remove.  
nozzle  
(3)  
13. Lay the Gun Cable out in a straight line  
so that the wire moves through it easily.  
Leave the cover open, so that the feed  
mechanism can be observed.  
contact  
tip (2b)  
WARnIng  
The following steps require applying power to the welder  
with the cover open.  
To prevent serious injury from fire or electric shock:  
1. do not touch anything, especially not the ground clamp,  
with the gun or welding wire or an arc will be ignited.  
2. do not touch internal welder components while it is  
plugged in.  
6
14. Do not touch the Gun’s Trigger (1c).  
Plug the Power Cord into its electrical  
outlet and turn the welder ON.  
MIn  
On  
7
9
8
MAX  
OFF  
10  
SPEEd  
MP FLUX WIRE WELdER  
120 V~  
60 hz  
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15. Point the Gun away from all objects and  
press the Trigger (1c) until the wire feeds  
out of the gun two inches.  
gun  
the Wire Liner (4) may come out with  
the welding wire, this is normal, just  
push the Wire Liner back into the gun.  
If the wire does not feed properly and the  
Spool is stationary, turn the welder OFF,  
unplug it, and slightly tighten the Feed  
Tensioner (37) clockwise before retrying.  
Welding  
Wire  
16. To check the wire’s drive tension, feed the  
wire against a piece of wood from 2 to 3  
inches away. If the wire stops instead of  
bending, turn the welder OFF, unplug it,  
slightly tighten the Feed Tensioner (37)  
clockwise, and try again.  
Incrementally  
increase tension  
until  
wire bends.  
If the wire bends from the feed tension,  
then the tension is set properly.  
6
MIn  
On  
7
8
17. tURn thE WELdER OFF.  
9
MAX  
OFF  
10  
SPEEd  
MP FLUX WIRE WELdER  
120 V~  
60 hz  
18. Select a Contact Tip that is compatible  
with the welding wire used. The included  
Tip (2b, .035”) will work with both .030”  
and .035” wire. Slide the Contact Tip over  
the wire and thread it clockwise into the  
Gun. Tighten the Contact Tip using the  
Multi-wrench (43).  
gun  
nozzle  
(3)  
19. Replace the Nozzle (3) and cut the wire  
1
1
off at / ” from tip ( / ” stickout).  
2
2
contact  
tip (2b)  
20. Swing the Cover (31) closed until the  
Cover Latch (8) locks in place.  
SKU 98871  
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BASIc WELdIng  
Read the EntIRE IMPORtAnt  
SAFEty InFORMAtIOn  
section at the beginning of this  
manual including all text under  
subheadings therein before  
welding.  
tO PREVEnt SERIOUS  
InjURy:  
Protective gear must be worn  
when using the Welder; minimum  
shade number 10 full face shield  
(or welding mask), ear protection,  
welding gloves, sleeves and  
apron, nIOSh-approved respirator,  
and fire resistant work clothes  
without pockets should be worn  
when welding.  
Light from the arc can cause  
permanent damage to the eyes  
and skin.  
do not breathe arc fumes.  
tO PREVEnt SERIOUS  
InjURy, FIRE And  
BURnS:  
MIn  
On  
Keep welding tip clear of  
grounded objects whenever unit  
is plugged in.  
this welder is a “hot tip” welder,  
meaning that current is available  
to the wire whenever the Power  
Switch is on.  
MAX  
OFF  
=
IRE WELdER  
120 V~  
60 hz  
The Flux Wire Welder is used to weld  
sheet metal and low carbon steel. Good  
welding takes a degree of skill and experience.  
Practice a few sample welds on scrap before  
welding your first project. Additional practice  
periods are recommended whenever you  
weld a different thickness of material or weld  
a different type of connection. Make practice  
welds on pieces of scrap to practice  
Practice your welding  
technique on scrap  
pieces before welding  
anything of value.  
technique before welding anything of value.  
REV 09f  
Page 14  
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control Panel Layout  
gun  
gun (1)  
cable  
Overload  
Indicator  
(22)  
5
6
4
MIn  
On  
7
9
3
1
Wire  
Speed  
dial (9)  
Power  
Switch (7a)  
8
2
MAX  
OFF  
0
10  
WIRE-FEEd SPEEd  
current  
90 AMP FLUX WIRE WELdER  
Switch (7b)  
120 V~  
60 hz  
ground  
cable (33)  
Power  
cord (32)  
gun cable: The welding Gun connects here. Power cord: Plug the Power Cord into a  
The wire and welding current feeds to  
the weld through here.  
The welding Gun is energized whenever  
the Power Switch is on.  
properly grounded 120 V~ outlet, on at  
least a 20 amp dedicated circuit with  
delayed action type circuit breaker or  
fuses.  
Wire Speed dial: This controls the speed  
that the welding wire feeds out of the  
welding Gun.  
current Switch: This controls the output  
amperage of the welder.  
Adjust this according to the weld settings  
chart to achieve a good weld.  
Adjust this according to the weld settings  
chart to achieve a good weld.  
Power Switch: This turns on power to the  
welding Gun and internal cooling fan.  
The welding Gun is energized whenever  
the Power Switch is on.  
ground cable: This connects to the base  
metal to provide a good connection for  
the current to travel back to the welder.  
Overload Indicator: This lights up if  
duty cycle work period is exceeded,  
overheating the welder. Rest the Gun  
on an electrically non-conductive, heat-  
resistant surface, such as a concrete  
slab, well clear of the ground clamp  
while allowing the welder to cool with the  
Power Switch on, so the Fan can help  
cool the welder. Once the welder cools  
enough to be used again, use shorter  
welding periods and longer rest periods  
to prevent needless wear.  
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Weld Settings chart  
nOtE: the numbers within the  
spaces are the approximate wire  
feed settings recommended* for this  
wire size and material thickness.  
Material thickness (Steel)  
22  
18  
16  
14  
1
3
/ ”  
8
/ ”  
16  
gauge gauge gauge gauge  
MIn current  
MAX current  
1
1.5  
speed speed speed speed speed speed  
0.5 1.5 9.5  
speed speed speed speed speed speed  
2
4
8
9
.030” Wire Size  
(Flux core, Mild Steel)  
2
3
8
.035” Wire Size  
(Flux core, Mild Steel)  
* this chart is only intended to show general guidelines for different wire sizes and for different  
thicknesses of material. the settings should only be used at the beginning of a weld and must be  
adjusted after stopping and carefully inspecting the weld. Proper welding takes experience.  
duty cycle (duration of Use)  
Avoid damage to the Welder by not  
welding for more than the prescribed  
duty cycle time. The Duty Cycle defines the  
number of minutes, within a 10 minute period,  
25% duty cycle at MAX setting  
during which a given welder can produce a  
2 minutes, 30 seconds welding  
particular welding current without overheating.  
followed by  
For example, this Welder with a 25% duty  
at least 7 minutes, 30 seconds of rest  
cycle on MAX setting must be allowed to  
rest for at least 7 minutes, 30 seconds after  
every 2 minutes, 30 seconds of continuous  
weld. Failure to carefully observe duty cycle  
limitations can easily over-stress a welder’s  
power generation system contributing to  
premature welder failure.  
45% duty cycle at MIn setting  
4 minutes, 30 seconds welding  
followed by  
at least 5 minutes, 30 seconds of rest  
This welder has an internal thermal  
protection system to help prevent this sort  
of over-stress. When the unit overheats, it  
automatically shuts down and the Overload  
Indicator (22) lights, then the welder  
automatically returns to service after cooling  
gun  
off. Rest the Gun on an electrically non-  
conductive, heat-proof surface, such as a  
concrete slab, well clear of the ground clamp  
while allowing the welder to cool with the  
Power Switch on, so that the internal Fan will  
help cool the welder. When the welder can be  
used again, use shorter welding periods and  
longer rest periods to prevent needless wear.  
6
MIn  
On  
7
9
8
MAX  
OFF  
concrete slab  
10  
(or other heat-proof,  
non-conductive  
surface)  
PEEd  
P FLUX WIRE WELdER  
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Setting Up the Weld  
1. Make practice welds on pieces of scrap  
the same thickness as your intended  
workpiece to practice technique before  
welding anything of value. Clean the  
weld surfaces thoroughly with a wire  
brush or angle grinder; there must be no  
rust, paint, oil, or other materials on the  
weld surfaces, only bare metal.  
clamps  
workpieces  
2. Use clamps (not included) to hold the  
workpieces in position so that you can  
concentrate on proper welding technique.  
The distance (if any) between the two  
workpieces must be controlled properly to  
allow the weld to hold both sides securely  
while allowing the weld to penetrate  
clean  
surfaces to  
bare metal.  
chamfer thick workpieces.  
fully into the joint. The edges of thicker  
workpieces may need to be chamfered (or  
beveled) to allow proper weld penetration.  
gun  
Workpiece  
3. Clamp Ground Cable to bare metal on  
the workpiece near the weld area, or to  
metal work bench where the workpiece is  
clamped.  
5
4
6
MIn  
On  
7
9
3
1
8
2
clean  
surface to  
bare metal.  
MAX  
OFF  
0
10  
WIRE-FEEd SPEEd  
90 AMP FLUX WIRE WELdER  
ground  
120 V~  
60 hz  
clamp  
4. Set the Wire Speed Dial and the Current  
Switch to the desired settings.  
Refer to the chart on the welder or the  
chart on the facing page.  
5
5
6
4
6
4
MIn  
MIn  
On  
3
1
7
9
8
2
8
MAX  
MAX  
0
10  
0
10  
WIRE-FEEd SPEEd  
+
WIRE-FEEd SPEEd  
dO nOt SWItch thE cURREnt  
WhILE WELdIng.  
90 AMP FLUX WIRE WELdER  
90 AMP FLUX WIRE WELdER  
1
120 V~  
60 hz  
5. Flip the Power Switch to the OFF position,  
then plug the Welder into a dedicated,  
120 V~, 20 A circuit with delayed action  
type circuit breaker or fuses.  
MIn  
On  
7
9
8
MAX  
OFF  
FLUX WIRE WELdER  
120 V~  
60 hz  
20 Amp minimum circuit  
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hOLd  
gUn  
cLEAR  
6
MIn  
On  
6. Hold the Gun, without touching the  
Trigger, with the wire and tip clearly out of  
the way of any grounded objects.  
7
9
8
MAX  
OFF  
10  
SPEEd  
Then, turn the Power Switch ON.  
MP FLUX WIRE WELdER  
120 V~  
60 hz  
Basic Welding technique  
1. Press (and hold) Trigger and contact area  
to be welded with electrode wire to ignite  
arc.  
stringer bead  
weave bead  
2. For a narrow weld, you can usually draw  
the wire in a steady straight line,  
this is called a stringer bead.  
For a wider weld, draw the wire back and  
forth across the joint,  
this is called a weave bead.  
3. Hold Gun in one hand and the face shield  
in the other. If a hands-free welding  
shield (not included, see #6, page 4 for  
guidelines) is used, then both hands can  
be used to control Gun.  
Weld gun angles,  
viewed from front of weld joint.  
4. Direct the welding wire straight into the  
joint. This gives an angle of 90° (straight  
up and down) for butt (end to end) welds,  
and an angle of 45° for fillet (T-shaped)  
welds.  
90°  
butt weld joint  
45°  
fillet weld joint  
drag Angle  
5. The end of gun should be tilted so that  
wire is angled anywhere in-between  
straight on and 15° in the direction you  
are welding. The amount of tilt is called  
the drag angle.  
0-15°  
Stickout  
1
(up to / ”)  
2
Weld  
direction  
6. The welding wire should extend no more  
1
than / ” past the tip.  
2
This distance is called stickout or CTWD  
- Contact Tip to Work Distance.  
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note: If Welder is used too long, the amber  
Overload Indicator (22) will light and the  
Welder Gun will shut off until the welder  
cools. If this happens, rest the Gun on an  
electrically non-conductive, heat-resistant  
surface, such as a concrete slab, well  
clear of the ground clamp. Wait about  
8-10 minutes with the Power Switch ON  
for the welder to cool. When the welder  
can be used again, use shorter welding  
periods and longer rest periods to help  
prevent needless wear.  
gun  
6
MIn  
On  
7
9
8
MAX  
OFF  
concrete slab  
10  
(or other heat-proof,  
non-conductive  
surface)  
EEd  
P FLUX WIRE WELdER  
After practice welding for a few  
seconds, StOP and examine  
your weld using the guidelines  
starting on the next page.  
7. After welding the test weld on a piece  
of scrap for a few seconds, stop,  
and check your progress. Clean, then  
compare your weld’s appearance with the  
diagrams and descriptions in the Welding  
tips section starting on the next page.  
After making any necessary adjustments,  
continue to weld while carefully  
FOLLOW dUty cycLE!  
following the duty cycle guidelines  
as explained on page 16.  
up to 2-1/2 minutes  
welding on MAX setting  
up to 4-1/2 minutes  
welding on MIn setting  
hOLd  
gUn  
cLEAR  
6
MIn  
On  
7
9
8. When the weld is complete, lift the Gun  
and welding wire clearly away from any  
grounded object, and turn the Power  
Switch off.  
8
MAX  
OFF  
10  
SPEEd  
MP FLUX WIRE WELdER  
120 V~  
60 hz  
gun  
9. Set the gun down on a heat-proof,  
electrically non-conductive surface.  
Unplug the Power cord.  
concrete slab  
(or other heat-proof,  
non-conductive  
surface)  
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WELdIng tIPS  
A typical Flux-core Wire (FcAW) Weld  
before cleaning.  
weld bead  
A good way to test welding technique is  
to examine a weld’s appearance after it has  
cooled and the slag has been removed. Then,  
better welding can be learned by adjusting your  
weld technique to remedy any problems found.  
slag  
spatter  
base metal  
cleaning the Weld  
tO PREVEnt  
SERIOUS InjURy:  
continue to wear AnSI-approved  
safety goggles and protective  
wear when cleaning a weld.  
Sparks or chips may fly when  
cleaning.  
chipping  
hammer  
1. A weld from flux core wire will be covered  
by slag, use the Chipping Hammer to  
knock this off. Be careful not to damage  
the weld or base material.  
Wire Brush  
2. Then, use the Wire Brush to further clean  
the weld or use an angle grinder (sold  
separately) to shape the weld.  
StRIKE tESt  
A test weld on a PIEcE OF ScRAP can be tested by  
using the following procedure.  
WEAR AnSI gOggLES dURIng thIS PROcEdURE.  
clamp  
dead-blow hammer  
ScRAP  
workpiece  
WARnIng! this test WILL damage the weld  
it is performed on. this test is OnLy  
an indicator of weld technique and is  
not intended to test working welds.  
gOOd WELd  
bends and is not brittle  
1. After two scraps have been welded  
together and the weld has cooled, clamp  
one scrap in a sturdy vise.  
2. Stay clear from underneath while you  
strike the opposite scrap with a heavy  
hammer, preferably a dead-blow hammer.  
clamp  
dead-blow hammer  
ScRAP  
workpiece  
3. A gOOd WELd will deform but not break,  
as shown on top.  
A POOR WELd will be brittle and snap at  
the weld, as shown on bottom.  
POOR WELd  
snaps or cracks  
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WELd dIAgnOSIS  
Workpiece heat control / Weld Penetration  
EXcESS PEnEtRAtIOn OR  
InAdEqUAtE PEnEtRAtIOn  
PROPER PEnEtRAtIOn  
BURn-thROUgh  
not hot enough  
Ideal heat  
too hot  
how to increase workpiece heat  
how to reduce workpiece heat  
and increase penetration:  
(to weld thIcKER workpieces properly)  
and limit penetration:  
(to weld thInnER workpieces properly)  
a.Use MAX setting  
b.Weld more slowly  
c.Use faster wire feed  
d.Use shorter stickout  
a.Use MIn setting  
b.Weld more quickly  
c.Use slower wire feed  
d.Use longer stickout  
Example Weld diagrams  
good  
Weld  
current  
too Low  
current  
too high or  
Wire Feed  
too Fast  
Weld Speed  
too Fast  
Weld Speed  
too Slow  
Stickout  
too Long  
tO cORREct:  
tO cORREct:  
tO cORREct:  
tO cORREct:  
tO cORREct:  
MIn  
On  
8
maintain  
MAX  
MIn  
On  
less  
than / ”  
stickout  
8
1
2
weld  
slower  
weld  
faster  
or  
MAX  
5
4
6
M
7
8
2
9
M
0
10  
WIRE-FEEd SPEEd  
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WELd PROBLEMS  
Penetration (Workpiece heat control)  
EXcESS PEnEtRAtIOn OR  
PROPER PEnEtRAtIOn  
Weld is visible underneath and  
bulges slightly on top.  
InAdEqUAtE PEnEtRAtIOn  
Weld does not contact the joint  
fully, just on the surface.  
BURn-thROUgh  
Weld droops on top and  
underneath, or falls through  
entirely, making a hole.  
Profile Views  
POSSIBLE cAUSES And SOLUtIOnS  
POSSIBLE cAUSES And SOLUtIOnS  
1. Workpiece overheating:  
Reduce wire feed speed.  
Use MIN setting.  
1. Incorrect welding technique:  
1
Maintain / ” or less stickout.  
2
Keep arc on leading edge of weld puddle.  
Hold gun at proper angles.  
2. Welding speed too slow:  
Increase welding speed and ensure that  
welding speed is kept steady.  
2. Insufficient weld heat:  
Reduce welding speed.  
Use MAX setting.  
3. Excessive material at weld:  
Reduce wire feed speed.  
3. Workpieces too thick/close:  
Bevel thick workpieces, allow slight gap,  
and weld in several passes.  
Weld not Adhering Properly  
gaps present between weld and previous bead or  
between weld and workpiece. See areas below.  
4. Insufficient weld material:  
Increase wire feed speed.  
Profile  
View  
Bend at joint  
POSSIBLE cAUSES And SOLUtIOnS  
1. Incorrect welding technique:  
Profile  
View  
Place stringer bead at correct place in joint.  
Adjust workpiece position or weld angle to  
permit proper welding to bottom of piece.  
Pause briefly at sides during weave bead.  
Keep arc on leading edge of weld puddle.  
Hold gun at proper angles.  
POSSIBLE cAUSES And SOLUtIOnS  
1. Improper clamping:  
Clamp workpieces securely.  
Make tack welds to hold workpieces.  
2. Insufficient weld heat:  
Increase current and/or wire feed speed.  
Excessive heat:  
3. dirty workpiece:  
Weld a small portion and allow to cool  
before proceeding.  
Clean workpiece down to bare metal.  
4. Insufficient weld material:  
Increase weld speed.  
Reduce wire feed speed.  
Increase wire feed speed.  
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coat of Slag Over Weld  
toP  
View  
Excessive Spatter  
Fine spatter is normal.  
Spatter that is grainy and large is a problem.  
PArtiAlly chiPPed AwAy to show weld  
Slag is a necessary part of a flux-  
core wire weld. It shields the weld from  
impurities. clean off the slag with the  
chipping hammer and Wire Brush after  
welding.  
toP  
View  
POSSIBLE cAUSES And SOLUtIOnS  
1. dirty workpiece or welding wire:  
Clean workpiece down to bare metal.  
Make certain that wire is clean and free  
from oil, coatings, and other residues.  
Porosity  
Small cavities or holes in the bead.  
toP  
View  
2. Wire feeding too fast:  
Reduce wire feed speed.  
3. Stickout too long:  
Reduce stickout.  
POSSIBLE cAUSES And SOLUtIOnS  
1. dirty workpiece or welding wire:  
Clean workpiece down to bare metal.  
Make certain that wire is clean and free  
from oil, coatings, and other residues.  
Burn-through  
Base material melts away,  
leaving a hole in the weld.  
2. Inconsistent welding speed:  
Maintain steady weld speed.  
3. Stickout too long:  
Reduce stickout.  
toP  
View  
crooked/Wavy Bead  
POSSIBLE cAUSES And SOLUtIOnS  
toP  
View  
1. Workpiece overheating:  
Reduce current and/or wire feed speed.  
2. Welding speed too slow:  
Increase welding speed and ensure that  
welding speed is kept steady.  
POSSIBLE cAUSES And SOLUtIOnS  
1. Inaccurate welding:  
Use two hands or rest hand on steady  
surface.  
3. Excessive material at weld:  
Reduce wire feed speed.  
2. Inconsistent welding speed:  
Maintain steady weld speed.  
3. Stickout too long:  
Reduce stickout.  
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SERVIcE  
tO PREVEnt SERIOUS  
InjURy, FIRE And  
gun  
BURnS:  
Unplug the welder, rest the gun  
on a heat-proof, electrically  
non-conductive surface, and  
allow all parts of the Welder to  
cool thoroughly before service.  
concrete slab  
+
(or other heat-proof,  
non-conductive  
surface)  
1. Periodically remove the Right and Left  
side panels (12 and 13), and using  
compressed air, blow out all dust from the  
interior.  
2. Store in a clean and dry location.  
3. For optimal weld quality, clean and  
inspect the contact tip (2b) and nozzle  
(3) before each use, as follows:  
nozzle (3) Inspection,  
cleaning, and Replacement  
1. Make sure that the entire gun is  
completely cool and that the Power  
cord is unplugged from the electrical  
outlet before proceeding.  
gun  
2. Turn the Nozzle counterclockwise while  
pulling to remove.  
3. Scrub the interior of the Nozzle clean with  
a wire brush.  
nozzle  
(3)  
4. Examine the end of the Nozzle. The  
end should be flat and even. If the end  
is uneven, chipped, melted, cracked,  
or otherwise damaged, the Nozzle will  
adversely effect the weld and should be  
replaced.  
contact  
tip (2b)  
5. Reinstall the Nozzle after inspecting and  
cleaning the Contact Tip.  
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contact tip (2b) Inspection,  
cleaning, and Replacement  
1. Make sure that the entire gun is  
completely cool and that the Power  
cord is unplugged from the electrical  
outlet before proceeding.  
2. Remove the Nozzle as explained in the  
previous subheading. Using the third oval  
hole on the Multi-wrench (43), turn the  
Contact Tip counterclockwise and slide it  
off the welding wire.  
gun  
nozzle  
(3)  
3. Scrub the exterior of the Tip clean with a  
wire brush. Clean out the inside of the  
tip with a tip cleaner (sold separately).  
Check that the Tip is the proper type for  
the wire size used (.035” tip for .030–.035”  
wire).  
contact  
tip (2b)  
4. Examine the shape of the hole at the end  
of the Contact Tip. It should be an even  
circle, it should not be oblong or have any  
bulges in it.  
5. If any problems are noted, Contact Tip  
replacement would be advisable. Make  
sure to select a new Tip that is the correct  
size for the welding wire used (.035” tip  
for .030–.035” wire).  
6. Reinstall the Tip and securely reinstall the  
Nozzle as well.  
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tROUBLEShOOtIng  
IMPORtAnt!  
Be cERtAIn to shut off the Welder, disconnect it from power, and discharge the gun to ground  
before adjusting, cleaning, or repairing the unit.  
Wire feed motor runs but wire does not feed properly  
POSSIBLE cAUSES And SOLUtIOnS  
1. Insufficient wire feed tension:  
Increase wire feed tension properly - follow step 16 on page 13.  
2. Incorrect wire feed roll size:  
Replace with the proper wire feed roll - follow the wire spool installation instructions,  
starting on page 10.  
Flip over wire feed roll if necessary.  
3. damaged gun, cable, or liner assembly:  
Have a qualified technician inspect these parts and replace as necessary.  
Wire creates a bird’s nest during operation  
POSSIBLE cAUSES And SOLUtIOnS  
1. Excess wire feed tension:  
Adjust wire feed tension properly - follow step 16 on page 13.  
2. Incorrect contact tip size:  
Replace with the proper tip for the wire.  
3. gun end not inserted into drive housing properly:  
Loosen gun securing bolt and push gun end into housing just enough so that it does not  
touch wire feed mechanism.  
4. damaged liner:  
Have a qualified technician inspect and repair/replace as necessary.  
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tROUBLEShOOtIng (continued)  
IMPORtAnt!  
Be cERtAIn to shut off the Welder, disconnect it from power, and discharge the gun to ground  
before adjusting, cleaning, or repairing the unit.  
Power switch (7a) lights,  
but welder does not function when switched on  
POSSIBLE cAUSES And SOLUtIOnS  
1. tripped thermal protection device:  
Shut the welder’s switch to off and allow it to cool for at least 20 minutes.  
Reduce duration or frequency of welding periods to help reduce wear on the welder.  
Refer to duty cycle section on page 16.  
2. Faulty or improperly connected trigger (1c):  
Qualified technician must check and secure/replace Trigger (1c).  
3. Internal fuse blown:  
Check/replace according to the following directions.  
a. WARnIng! turn the welder OFF and unplug it before proceeding.  
b. Press on the Cover Latch (8), then lift the Cover (31) using Handle (30). Remove Left  
Side Panel (13).  
c. Examine fuse on panel to see if metal wire inside is broken or not. See illustration.  
nOtE: the circuit board is very delicate and  
will be damaged if it is not supported  
while the fuse is manipulated. If you  
Fuse  
are have any doubts about doing this  
without damaging the welder, have a  
qualified technician replace the fuse.  
d. If the fuse is broken, carefully support the  
circuit board with a gloved hand while you  
remove the old fuse. Support the circuit  
board from behind while you install a new  
2 Amp, 250 Volt fuse of the same type.  
nEVER use another type or size fuse.  
e. Reinstall the Left Side Panel (13), close  
the Cover (31), and test the unit for  
proper function before use.  
SKU 98871  
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Page 27  
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tROUBLEShOOtIng (continued)  
IMPORtAnt!  
Be cERtAIn to shut off the Welder, disconnect it from power, and discharge the gun to ground  
before adjusting, cleaning, or repairing the unit.  
Power switch (7a) does not light when switched on  
POSSIBLE cAUSES And SOLUtIOnS  
Unit is not connected to outlet properly or outlet is unpowered:  
Verify the voltage at the outlet and the connection to the outlet.  
If voltage is not present at outlet, check circuit breaker/GFCI devices; if any are tripped,  
determine and remedy cause before resetting. Verify that the circuit is designed to supply  
the required input amperage as detailed on the specifications table.  
Wire Feeds, but arc does not ignite  
POSSIBLE cAUSES And SOLUtIOnS  
1. Improper ground connection:  
Make certain that the workpiece is contacted properly by the Ground Clamp and that the  
workpiece is properly cleaned near the ground clamp and the welding location.  
2. Improperly sized or excessively worn contact tip (2b):  
Verify that Contact Tip (2b) is the proper size for the wire. Check that the hole in the tip is  
not deformed or enlarged. Also, check that the tip is not dirty; this would prevent a good  
connection. If needed, replace Contact Tip (2b) with proper size and type.  
Page 28  
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SKU 98871  
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tROUBLEShOOtIng (continued)  
IMPORtAnt!  
Be cERtAIn to shut off the Welder, disconnect it from power, and discharge the gun to ground  
before adjusting, cleaning, or repairing the unit.  
Weak Arc strength  
POSSIBLE cAUSES And SOLUtIOnS  
1. Incorrect line voltage:  
Check the line voltage and, if insufficient, have a licensed electrician remedy the situation.  
2. Improper gauge or length of extension cord:  
Extension cords are not recommended. If possible, eliminate the use of an extension cord.  
If an extension cord is needed, refer to the guidelines on page 7.  
Welding arc not stable  
POSSIBLE cAUSES And SOLUtIOnS  
1. Wire not feeding properly:  
See first troubleshooting section - Wire feed motor runs but wire does not feed  
properly.  
2. Incorrect contact tip size:  
Replace with the proper tip for .030” wire.  
3. Incorrect wire feed speed:  
Adjust wire feed speed to achieve a more stable arc.  
4. Loose gun cable or ground cable:  
Check to ensure that all connections are tight.  
5. damaged gun or loose connection within gun:  
Have a qualified technician inspect and repair/replace as necessary.  
6. Adjust current setting:  
Make sure setting matches recommended setting on chart.  
SKU 98871  
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Page 29  
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PARtS LIStS And dIAgRAMS  
Wiring Schematic  
L1  
n
PE  
S1  
cS 100  
6
5
4
3
2
1
M
Fan  
4
Overload  
Indicator  
+
A
-
MIn/MAX  
S2  
3
1
S3  
A
E
B
c
d
Pt  
0
t
5
6
F
0
t
Pt  
2
Page 30  
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Parts List  
Part  
description  
qty  
Part  
description  
qty  
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
2
1
1a Back Handle  
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
4
4
4
2
1
1
1
1
1
24 Spool Spring  
1b Front Handle  
1c Trigger  
1d Handle Lock Ring  
1e Gun Tube  
25 Wing Nut, M6  
26 Spool Retaining Nut  
27 Wire Spool  
28 Spool Spindle  
29 Screw, ST4.2*25  
30 Handle  
31 Cover  
32 Power Cord  
33 Ground Cable  
34 Feed Roller  
35 Feed Bearing  
36 Feed Swing Arm  
37 Feed Tensioner  
38 Face Shield (shade #10)  
39 Wire Brush / Chipping Hammer  
40 Washer  
2b .9 mm Contact Tip  
3
4
5
6
Nozzle  
Wire Liner  
Gun Cable Clamp A  
Gun Cable Clamp B  
7a Power Switch  
7b Current Switch (MIN/MAX)  
8
9
Cover Latch  
Wire Speed Dial  
10 Nut  
11 Feed Control Circuit Board  
12 Right Side Panel  
13 Left Side Panel  
14 Base Frame  
15 Foot  
16 Washer  
17 Screw, ST4.2*13  
18 Transformer Bracket  
19 Thermostat  
41 Nut  
42 Bolt  
43 Multi-wrench (for Contact Tip)  
44 Feed Roller Bracket  
45 Roller Bracket Screw  
46 Roller Bracket Washer  
47 Washer  
48 Support Bracket  
49 Fan  
50 Lock Washer  
20 Transformer  
1
1
1
21 Middle Partition  
22 Overload Indicator  
23 Wire Feed Assembly  
PLEASE REAd thE FOLLOWIng cAREFULLy  
THE MANUFACTURERAND/OR DISTRIBUTOR HAS PROVIDED THE PARTS DIAGRAM  
IN THIS MANUAL AS A REFERENCE TOOL ONLY. NEITHER THE MANUFACTURER NOR  
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.  
SKU 98871  
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Assembly diagram  
Page 32  
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SKU 98871  
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detail of Part 23  
36  
37  
35  
44  
34  
46  
45  
23  
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 98871  
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Page 33  
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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 1 yEAR / 90 dAy  
WARRAnty  
Harbor Freight Tools Co. makes every  
effort to assure that its products meet  
high quality and durability standards, and  
warrants to the original purchaser that for a  
period of ninety days from date of purchase  
that the Gun, liner, wire feed mechanism  
(if applicable), welding clamps, electrode  
holders, cables and accessories packed with  
the welder are free of defects in materials and  
workmanship. this Limited 90 day/1 year  
Warranty shall not apply to consumable  
parts such as tips, welding wire, and  
gas nozzles. Harbor Freight Tools also  
warrants to the original purchaser, for a  
period of one year from date of purchase,  
that the transformer and rectifier are free from  
defects in materials and workmanship (90  
days if used by a professional contractor or  
if used as rental equipment). This warranty  
does not apply to damage due directly or  
indirectly to misuse, abuse, negligence or  
accidents, repairs or alterations outside  
our facilities, normal wear and tear, or to  
lack of maintenance. We shall in no event  
be liable for death, injuries to persons  
or property, or for incidental, contingent,  
special or consequential damages arising  
from the use of our product. Some states  
do not allow the exclusion or limitation of  
incidental or consequential damages, so the  
above limitation of exclusion may not apply  
to you. THIS WARRANTY IS EXPRESSLY  
IN LIEU OF ALL OTHER WARRANTIES,  
EXPRESS OR IMPLIED, INCLUDING THE  
WARRANTIES OF MERCHANTABILITY AND  
FITNESS.  
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  
Page 34  
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SKU 98871  
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