Chicago Electric 3914 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).

3.To delay the feed timing in order to increase stitch

SKU 03914

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

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Contents Sewing Machine Single Needle For technical questions or replacement parts, please callSave This Manual SpecificationsSafety Warnings and Precautions Read all instructions before using this toolSKU Unpacking Sewing Safety PrecautionsAssembly REV 04/03, 05/03 Mounting the Thread Stand Bobbin Winder Operation OperationMounting the Bobbin Winder Attaching the Needle Setting the Bobbin into the Bobbin CaseWinding Thread Onto the Bobbin Threading 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 Limited 90 Day Warranty

3914 specifications

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