Set up and operating instructions manual [PDF] (33 pages)
- Updated: 12.09.2026
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Dual MIG Welder
Model 93793
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© 2006 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.
Cover Revised 09l
Page 2
For technical questions, please call 1-800-444-3353.
SKU 93793
Contents
PRODUCT SPECIFICATIONS...............................................................3
GENERAL SAFETY RULES..................................................................3
Specific Safety Rules........................................................................................6
Grounding..........................................................................................................9
Extension Cords...............................................................................................10
Symbology........................................................................................................10
UNPACKING.........................................................................................10
ASSEMBLY INSTRUCTIONS...............................................................11
To Attach The Handle....................................................................................... 11
To Install The Rear Wheels And Casters........................................................ 11
To Install a 2 lb. Wire Spool.............................................................................12
To Install a 10 lb. Wire Spool...........................................................................12
To Route The Wire............................................................................................13
To Change Wire Settings.................................................................................15
Setting The Gun Polarity For Wire Type......................................................... 16
To Attach The Ground Cable With Clamp...................................................... 16
To Install A Gas Cylinder.................................................................................17
OPERATING INSTRUCTIONS.............................................................18
Before You Begin Welding...............................................................................18
Duty Cycle (Duration of Use)...........................................................................18
Setting Up The Weld.........................................................................................19
Holding The Welding Torch.............................................................................20
Weld Settings Chart.........................................................................................21
Weld Diagnosis.................................................................................................23
When the Weld is Completed..........................................................................25
INSPECTION, MAINTENANCE, AND CLEANING..............................26
Nozzle Inspection, Cleaning, and Replacement............................................ 26
Contact Tip Inspection, Cleaning, And Replacement................................... 26
Replacing The Welding Torch Liner............................................................... 27
Parts Lists and Diagrams...................................................................28
Wiring Schematic.............................................................................................28
Parts List...........................................................................................................29
Assembly Diagram...........................................................................................30
TROUBLESHOOTING..........................................................................32
WARRANTY..........................................................................................34
Page 3
For technical questions, please call 1-800-444-3353.
SKU 93793
PRODUCT SPECIFICATIONS
Welding Current
35 ~ 140 A
Duty Cycle
18% @ 140 A / 100% @ 45 A
(Refer to chart and explanation on page 18)
Power Consumption
240 V~ / 60 Hz / 25 A
(Connect to a 25 A minimum dedicated circuit)
Open Voltage
15.5 - 20 V
Required Power Plug Type
3-Prong, 240 V~, polarized, twist lock (not included)
NEMA #L6-30 or equivalent
Power Cord Rating
12 AWG x 3C x 6’ Long
Gas Inlet Size
1/4”
Ground Cable
4 Gauge / 6’ Long
Torch Power Cable
8 Gauge / 6’ Long
Thermal Overload Protection (with Light)
Automatic shutdown and restart after cool down
Wire Size
0.23” to 0.035”
Wire Spool Size
7-3/4” Diameter
Included Torch Tip Size
0.030”
Accessories
Wheel Kit / Wire Spool / Torch Assy. / Grounding Clamp
Wire Brush & Hammer / Spare 1.0 & 0.8 Welding Tips
Hand-Held Face Shield
Net Weight
103 lb.
SAVE THIS MANUAL
You will need this manual for the safety warnings and precautions, assembly, operating,
inspection, maintenance and cleaning procedures, parts list and assembly diagram. Keep
your invoice with this manual. Write the invoice number on the inside of the front cover. Keep
this manual and invoice in a safe and dry place for future reference.
GENERAL SAFETY RULES
WARNING!
READ AND UNDERSTAND ALL INSTRUCTIONS
Failure to follow all instructions listed below may result in
electric shock, fire, and/or serious injury.
SAVE THESE INSTRUCTIONS
WORK AREA
Keep your work area clean and well lit.
1.
Cluttered benches and dark areas invite
accidents.
Do not operate power tools in explosive atmospheres, such as in the presence of
2.
flammable liquids, gases, or dust. Power tools create sparks which may ignite the dust
or fumes.
Keep bystanders, children, and visitors away while operating a power tool.
3.
Distractions can cause you to lose control. Protect others in the work area from debris
such as chips and sparks. Provide barriers or shields as needed.
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