7.Dress properly. Do not wear loose clothing or jewelry as they can be caught in moving parts. Protective, electrically nonconductive clothes and nonskid footwear are recom- mended when working. Wear restrictive hair covering to contain long hair.

8.Use eye and ear protection. Always wear ANSI approved impact safety goggles. Wear a full face shield if you are producing metal filings or wood chips. Wear an ANSI ap- proved dust mask or respirator when working around metal, wood, and chemical dusts and mists.

9.Do not overreach. Keep proper footing and balance at all times. Do not reach over or across running machines or air hoses.

10.Maintain tools with care. Keep tools clean for better and safer performance. Follow instructions for lubricating and changing accessories. Inspect tool cords and air hoses periodically and, if damaged, have them repaired by an authorized technician. The handles must be kept clean, dry, and free from oil and grease at all times.

11.Disconnect air supply. Disconnect air hose when not in use.

12.Remove adjusting keys and wrenches. Check that keys and adjusting wrenches are removed from the tool or machine work surface before plugging it in.

13.Avoid unintentional starting. Do not carry any tool with pressure applied to the Ham- mer Face (10), whether it is plugged in or not.

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

15.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 dam- aged 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.

16.Guard against electric shock. Prevent body contact with grounded surfaces such as pipes, radiators, ranges, and refrigerator enclosures.

17.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. Approved accessories are available from Harbor Freight Tools.

18.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 tool.

19.Use proper size and type extension cord. If an extension cord is required for the air compressor, it must be of the proper size and type to supply the correct current to the tool without heating up. Otherwise, the extension cord could melt and catch fire, or cause electrical damage to the tool. Check your compressor’s manual for the appropriate size cord.

Note: Performance of the compressor (if powered by line voltage) may vary depending on variations in local line voltage. Extension cord usage may also affect tool performance.

20.Maintenance. For your safety, maintenance should be performed regularly by a quali- fied technician.

SKU 90399

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

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Harbor Freight Tools 90399 operating instructions SKU For technical questions, please call
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90399 specifications

Harbor Freight Tools 90399 is a highly regarded tool known for its versatility and efficiency in various applications. Perfectly suited for DIY enthusiasts and professionals alike, this model boasts a range of features that make it a valuable addition to any tool collection.

One of the main attributes of the Harbor Freight Tools 90399 is its robust construction. Designed for durability and longevity, it is built with high-quality materials that withstand the rigors of frequent use. This ensures that users can rely on the tool for both light and heavy-duty tasks without concern for wear and tear.

The 90399 model is characterized by its ergonomic design, providing a comfortable grip that enhances user experience during prolonged operation. The tool's handle is designed to reduce fatigue, allowing users to work efficiently without sacrificing comfort. This feature is particularly beneficial in projects that require extended periods of use, as it helps maintain productivity while minimizing strain.

Another significant advantage of the Harbor Freight Tools 90399 is its intuitive design. The tool is easy to operate, making it accessible to beginners and experienced users alike. Its straightforward controls promote ease of use, which is crucial for achieving precision results, especially in detailed projects.

In terms of technology, the 90399 incorporates advanced mechanisms that enhance its performance. Whether used for cutting, drilling, or fastening, the tool’s functionalities are designed to provide maximum efficiency and accuracy. Additionally, its compact size allows for easy maneuverability in tight spaces, making it ideal for both indoor and outdoor applications.

The versatility of the Harbor Freight Tools 90399 is another notable feature. It can be utilized in a broad array of tasks, from home repairs and maintenance to professional-grade projects. This adaptability not only makes it a multifunctional tool but also an economical choice, as it can replace several specialized tools.

Users can also appreciate the tool’s low maintenance requirements. Its design minimizes the need for extensive upkeep, allowing users to focus on their projects rather than spending time on tool care. With its distinctive combination of durability, comfort, and versatility, the Harbor Freight Tools 90399 continues to be a favorite among various tool users, making it a smart investment for anyone seeking a reliable tool for a variety of tasks.
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