Instruction/ maintenance manual of the product 66787 Harbor Freight Tools
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240 VOL T ARC/TIG INVERTER WELDER AND TIG WELDING T ORCH Model 66787 SET UP AND OPERA TING 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 . SA VE THIS MANUAL.
Page 2 SKU 66787 For technical questions, please call 1-800-444-3353. CONTENTS IMPORT ANT SAFETY INFORMA TION............................................................................3 General Safety Rules............................................
Page 3 SKU 66787 For technical questions, please call 1-800-444-3353. SA VE THIS MANUAL Keep this manual for the safety warn- ings and precautions, assembly , operating, inspection, maintenance and cleaning pro- cedures. W rite the product’s serial number in the back of the manual (or month and year of purchase if product has no num- ber).
Page 4 SKU 66787 For technical questions, please call 1-800-444-3353. Do not expose power tools to rain b. or wet conditions. W ater entering a power tool will increase the risk of electric shock. Do not abuse the cord. Never use c. the cord for pulling or unplugging the power tool.
Page 5 SKU 66787 For technical questions, please call 1-800-444-3353. Service 5. Have your power tool serviced by a. a qualied repair person using only identical replacement parts. This will ensure that the safety of the power tool is maintained. SpecicSafetyRules Maintain labels and nameplates on 1.
Page 6 SKU 66787 For technical questions, please call 1-800-444-3353. • Avoid operating alone. • Do not use with power switch locked on. • Properly maintain and inspect to avoid electrical shock.
Page 7 SKU 66787 For technical questions, please call 1-800-444-3353. proved method for eliminating the hazard. Do not dispose of hot slag in con- • tainers holding combustible materi- als. Keep a re extinguisher nearby and know how to use it. After spot welding, make a thorough • examination for evidence of re.
Page 8 SKU 66787 For technical questions, please call 1-800-444-3353. tions for the specic welding or cut - ting situation. W ARNING: Handling the Power 21. Cord on this product will expose you to lead, a chemical known to the State of California to cause cancer , birth defects, and other reproductive harm.
Page 9 SKU 66787 For technical questions, please call 1-800-444-3353. SPECIFICA TIONS Electrical Requirements 240V~ / 60 Hz / 25A max. Power Cord: SJT 12A WG x 3C Power Plug: 3-Prong, 240 V AC (Not In.
Page 10 SKU 66787 For technical questions, please call 1-800-444-3353. WELDER FEA TURES Electrode Holder (8): 1. Connect the Electrode Holder Cable to the POSI- TIVE T erminal located at the front of the Welder . (See Figure A.) Ground Clamp (9): 2. Connect the Ground Clamp Cable to the NEGA TIVE T erminal located on the front of the Welder .
Page 1 1 SKU 66787 For technical questions, please call 1-800-444-3353. OPERA TING INSTRUCTIONS Read the ENTIRE IMPORT ANT SAFETY INFORMA TION section at the beginning of this manual including all text under subheadings therein before set up or use of this product.
Page 12 SKU 66787 For technical questions, please call 1-800-444-3353. Protective gear must be worn when using the Welder; ANSI- approved, arc shaded, eye protection, a full face shield, heavy duty work gloves, a welding apron, respirator , and heavy-duty work clothes without pockets should be worn when using this product.
Page 13 SKU 66787 For technical questions, please call 1-800-444-3353. Wear a NIOSH-approved respirator to avoid breathing arc fumes. Stroke the area to be welded with the 1 1. Electrode to ignite the arc. Never tap the Electrode into the welding sur- face to ignite the arc.
Page 14 SKU 66787 For technical questions, please call 1-800-444-3353. grounded, 240 V~, GFCI-protected receptacle and turn the Welder on. T urn the Gas Flow Knob on the torch 5. counterclockwise to allow the shield- ing gas to ow . T ilt the torch forward, towards the 6.
Page 15 SKU 66787 For technical questions, please call 1-800-444-3353. TROUBLESHOOTING Problem Possible Cause(s) Likely Solution(s) Welder will not turn on. No power at electrical outlet. 1. Power Cord not connected. 2. Line voltage incorrect. 3. Check power at electrical outlet.
Page 16 SKU 66787 For technical questions, please call 1-800-444-3353. WELDER P ARTS LIST AND ASSEMBL Y DIAGRAM Part # Description Qty . Part # Description Qty . 1 Housing 1 11 T ransformer 1 2 Strap 1 12 Heat Sink 3 3 Potentiometer 1 13 T apping Screw (4.
Page 17 SKU 66787 For technical questions, please call 1-800-444-3353. Part Description Qty . 1a T orch and Cable 1 2a Rod Holder 1 3a Ceramic Nozzle size 5 1 3b Ceramic Nozzle size 6 1 4a Collet Holder 1.6 mm (1/16”) 1 4b Collet Holder 2.4 mm (3/32”) 1 5a Collet 1.
Page 18 SKU 66787 For technical questions, please call 1-800-444-3353. 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 avail- able individually as replacement parts.
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If you have not bought Harbor Freight Tools 66787 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Harbor Freight Tools 66787 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Harbor Freight Tools 66787 you will learn all the available features of the product, as well as information on its operation. The information that you get Harbor Freight Tools 66787 will certainly help you make a decision on the purchase.
If you already are a holder of Harbor Freight Tools 66787, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Harbor Freight Tools 66787.
However, one of the most important roles played by the user manual is to help in solving problems with Harbor Freight Tools 66787. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Harbor Freight Tools 66787 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
