Harbor Freight Tools 03914 manual Changing the Thread Take-up Spring Stroke and Pressure

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Changing the Thread Take-up Spring Stroke and Pressure

1.Loosen Set Screw (2).

2.To increase the stroke, turn the Tension Knob Screw (3) clockwise (A).

3.To decrease the stroke, turn the Tension Knob Screw (3) counterclockwise (B).

4.Loosen Set Screw (2) and pull out the Tension Arm (5).

5.Loosen Set Screw (4) and remove the Tension Knob Screw (3).

6.Turn the Tension Knob Screw (3) clockwise (A) to increase pressure; or turn counterclockwise (B) to decrease pressure.

7.Replace Tension Knob Screw (3), tighten Set Screw (4), and replace the assembly.

Setting the Hand Lifter

1.To stop the machine with its Presser Foot up, turn the Hand Lifter (1) up (A).

The Presser Foot will go up about 1/4 inch and stop.

2.To set the Presser Foot to its original position, turn the Hand Lifter (1) down (B).

Using the Knee Lifter, you can get the standard Presser Foot lift of about 1/2 inch.

Setting the Presser Foot Pressure

1.Loosen Nut (2), and turn the Presser Spring Regulator (1) clockwise (A) to increase Presser Foot pressure.

2.To decrease Presser Foot pressure, turn the Presser Spring Regulator (1) counterclockwise.

3.After adjustment, tighten Nut (2).

Adjusting the Feed Timing

1.Loosen Set Screws (2) and (3) on the Feed Eccentric Cam (1) and properly position the Eccentric Cam. Retighten the Set Screws.

2.To advance the feed timing in order to prevent uneven material feed, move the Feed Eccentric Cam up (clockwise).

SKU 03914

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Contents 03914 For technical questions and replacement parts, please callSave This Manual SpecificationsSafety Warnings and Precautions Read all instructions before using this toolPage Unpacking Sewing Safety PrecautionsAssembly REV 04/03 REV 05/03 REV 03/04 Mounting the Thread StandBobbin Winder Operation OperationMounting the Bobbin Winder Winding Thread Onto the Bobbin Setting the Bobbin into the Bobbin CaseThreading the Machine Head Adjusting the Stitch LengthAdjusting the Needle Thread Tension Adjusting the Bobbin Thread TensionChanging the Thread Take-up Spring Stroke and Pressure Setting the Hand LifterSetting the Presser Foot Pressure Adjusting the Feed TimingAdjusting Needle-to-hook Timing Adjusting the Height of the Feed DogAdjusting the Height of the Knee Lifter MaintenanceAdjusting the Presser Bar Height Adjusting the Thread Take-up StrokeARM BED Parts List ARM BED Assembly Drawing Main Shaft Thread TAKE-UP Parts List Main Shaft Thread TAKE-UP Assembly Drawing FABRIC--PIERCING Hook Driving Parts List FABRIC--PIERCING Hook Driving Assembly Drawing Presser BAR Parts List Presser BAR Assembly Drawing Feed Mechanism Parts List Feed Mechanism Assembly Drawing Lubrication Parts List Lubrication Assembly Drawing OIL Reservoir & Knee Lifter Assembly Drawing and Parts List Machine Head Accessories Parts List and Assembly Drawing Bobbin Winder & Thread Stand Unit Parts List Bobbin Winder & Thread Stand Unit Assembly Drawing

03914 specifications

Harbor Freight Tools is well-known for offering a wide range of affordable tools and equipment, catering to DIY enthusiasts and professionals alike. One of their standout products is the Harbor Freight Tools 03914, a versatile tool that has gained popularity for its efficiency and reliability.

The Harbor Freight Tools 03914 is primarily recognized as a compact, portable air compressor that boasts impressive specifications. It features a powerful 1 HP motor that delivers a maximum pressure of 100 PSI, making it capable of handling a variety of tasks, from inflating tires to powering pneumatic tools. Its lightweight design, weighing in at around 30 pounds, makes it easy to transport and store, which is perfect for both home use and on-the-go projects.

One of the main features of the 03914 model is its oil-free pump, which means less maintenance and no need for oil changes. This design allows for cleaner air delivery, making it suitable for applications that require an oil-free output. The air compressor also includes a 3-gallon tank that provides ample air storage, ensuring consistent performance during usage. The tank is built from durable materials, contributing to the compressor's longevity and reliability.

In terms of technology, the Harbor Freight Tools 03914 is equipped with an integrated pressure regulator and a universal quick-disconnect fitting, allowing for easy attachment of air hoses and tools. The clear pressure gauge enables users to monitor the air pressure with precision, which is essential for various projects. Additionally, it features a low-profile design that enhances stability, reducing the risk of tipping over.

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Overall, the Harbor Freight Tools 03914 is designed with efficiency, portability, and ease of use in mind. Its combination of powerful performance, user-friendly features, and low maintenance makes it an excellent choice for anyone in need of a reliable air compressor. Whether you're a DIY hobbyist or a professional, this compact air compressor offers the versatility and functionality to manage a wide range of tasks efficiently.
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