Brothers SA3701 Sewing Machine Manual

The Brothers SA3701 is a versatile, user-friendly computerized sewing machine designed for beginners and intermediate sewers. It features 37 built-in stitches, an automatic needle threader, a drop-in top bobbin system, a built-in free arm, variable speed control, and a bright LED work light. Below are key sections for safety, features, setup, operation, maintenance, and troubleshooting.

Features at a Glance

Key components: Computerized control panel, Automatic needle threader, Drop-in top bobbin, Free arm, LED work light, Foot pedal, Accessory storage.

Unpacking & Setup

Unpack and inspect contents. Place on stable, flat surface.

1. Remove all packaging materials and protective covers.
2. Attach the accessory tray to the free arm if detached.
3. Plug the foot pedal into the machine port.
4. Connect the power cord to the machine and plug into a 120V AC outlet.
5. Turn on the power switch.

WARNING! Keep fingers away from the needle area during setup and operation. Ensure the machine is unplugged during initial assembly.

First-Time Operation

Power on the machine; the LED light will illuminate.

1. Wind and insert the bobbin: Follow the threading diagram for the drop-in bobbin system.
2. Thread the upper thread: Use the automatic needle threader for ease.
3. Select a stitch: Turn the stitch selector dial to a basic straight stitch (e.g., #1).
4. Practice sewing: Place fabric under the presser foot, lower the foot, and gently press the foot pedal.
5. Adjust speed: Use the speed control slider for slower practice sewing.

CAUTION! Always lower the presser foot before sewing. Keep hands clear of the moving needle.

Specifications

• Model: Brothers SA3701 Computerized Sewing Machine.
• Stitches: 37 built-in stitches (utility, decorative, 1-step buttonhole).
• Needle Threading: Automatic.
• Bobbin System: Drop-in, top-loading, jam-resistant.
• Speed Control: Variable, with max sewing speed.
• Lighting: Bright LED light.
• Free Arm: Yes, for cylindrical sewing.
• Included Feet: Buttonhole foot, zipper foot, button sewing foot, narrow hemmer foot, blind stitch foot.
• Power Source: 120V AC, 60Hz.
• Warranty: Limited 25-year warranty.

Controls and Functions

Access functions via dials and buttons on the front panel. Main Controls: Power/Stop button, Stitch Selector Dial, Stitch Length Dial (0-4 mm), Stitch Width Dial (0-7 mm), Reverse Stitch Button, Automatic Needle Threader Lever.

Additional Features: Drop-in bobbin with clear cover, Thread cutter on the side, Presser foot lifter, Handwheel for manual needle movement, Foot pedal connector, Accessory storage in free arm.

Stitch Settings: Adjust length for fabric type (shorter for lightweight, longer for heavy). Adjust width for zigzag and decorative stitches. Use reverse stitch to lock seams.

Stitch Selection & Settings

Select from 37 stitches for various projects.

1. Turn the stitch selector dial to the desired pattern number (refer to stitch chart).
2. For straight stitch (pattern 1-3), set width to 0.
3. For zigzag (pattern 4-6), adjust width as needed.
4. For buttonhole (pattern 29), attach the buttonhole foot and follow the guide.
5. For decorative stitches, select pattern 7-28; adjust length and width for effect.
6. Test stitch on a fabric scrap before starting your project.

Tip: Always use the correct presser foot for the selected stitch (e.g., buttonhole foot for buttonholes).

Threading & Bobbin Winding

Supports standard sewing thread and bobbins.

1. Bobbin Winding: Place spool on pin, thread through guide, wind onto bobbin until automatically full.
2. Inserting Bobbin: Drop bobbin into case with thread pulling counterclockwise; pull thread through slot.
3. Upper Threading: Follow numbered path on machine; use automatic needle threader by pulling lever down.
4. Drawing Up Bobbin Thread: Hold upper thread, turn handwheel toward you to bring bobbin thread up.

WARNING! Ensure machine is off or needle is in highest position when threading. Do not force dials or levers.

Care & Maintenance

Unplug before cleaning. Regularly clean lint from bobbin area and feed dogs with brush provided.

1. Remove needle plate screws to access bobbin area for thorough cleaning.
2. Oil sparingly as per manual instructions (specific points only).
3. Cover machine when not in use to prevent dust accumulation.
4. Replace needle regularly (every 8-10 hours of sewing).

CAUTION! Use only Brothers recommended needles and bobbins. Do not use compressed air to clean.

Regulatory Information

FCC Part 15: Class B digital device; complies with interference limits for residential use. Copyright © Brothers Industries, Ltd. For support, visit www.brother-usa.com or contact 1-877-467-4289. This product conforms to applicable safety standards.

Troubleshooting

Reset: Turn machine off and on again if computerized functions freeze.

Service: 1-877-467-4289; www.brother-usa.com