Harbor Freight Tools 38391 operating instructions For technical questions, please call

Models: 38391

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10.Stay alert. Watch what you are doing, use common sense. Do not operate any tool when you are tired.

11.Check for damaged parts. Before using any tool, any part that appears damaged should be carefully checked to determine that it will operate properly and perform its intended function. Check for alignment and binding of moving parts; any broken parts or mounting fixtures; and any other condition that may affect proper operation. Any part that is damaged should be properly repaired or replaced by a qualified technician. Do not use the tool if any switch does not turn On and Off properly.

12.Replacement parts and accessories. When servicing, use only identical replacement parts. Use of any other parts will void the warranty. Only use accessories intended for use with this tool.

13.Do not operate tool if under the influence of alcohol or drugs. Read warning labels if taking prescription medicine to determine if your judgement or reflexes are impaired while taking drugs. If there is any doubt, do not operate the Jump-Start.

14.Maintenance. For your safety, maintenance should be performed regularly by a qualified technician.

15.If you come in contact with battery acid, immediately wash the effected area with cool, clean water. Call for medical assistance and continue flushing the effected areas until medical help arrives.

16.The ON/Off switch (See FIGURE 1, next page) regulates power to the

clamps only. Keep it in the “Off” position except when jumpstarting.

17.Lead-acid batteries vent hydrogen gas during normal operation and charging. Hydrogen is highly flammable and explosive. Charge batteries only in a well-ventilated area.

18.Do not allow the red and black clamps to come in contact with each other or the same metal object.

19.When charging, first connect the red

(+) clamp to the positive (+) battery terminal.

20.Connect the negative (-)clamp to a non-moving metal engine part for negative ground systems.

21.Only use the charger on 12 V systems on vehicles or boats.

22.Do not use as a replacement for a vehicle battery.

23.The warnings, cautions, 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.

24.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.

SKU 38391

For technical questions, please call 1-800-444-3353.

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Harbor Freight Tools 38391 operating instructions For technical questions, please call