singer sewing machine model 3337 manual

The Singer Sewing Machine Model 3337 is a versatile, high-performance mechanical sewing machine designed for home use. It features a built-in stitch selection system, adjustable stitch length and width, a four-step buttonhole function, a drop feed for free-motion sewing, and a built-in needle threader. Powered by a standard 120V AC motor, it is suitable for a wide range of fabrics and sewing projects. Below are key sections for safety, features, setup, operation, maintenance, and troubleshooting.

Features at a Glance

Key components: Main body with built-in motor, Free Arm, Stitch Selector Dial, Stitch Length & Width Controls, Reverse Stitch Lever, Bobbin Winder, Presser Foot, and Foot Pedal.

Unpacking and Setup

Unpack and inspect all contents. Place on a stable, flat surface at a comfortable height.

1. Remove machine and accessories from packaging. Check for: Power cord, foot pedal, presser feet, bobbins, needles, seam ripper, screwdriver, and instruction manual.
2. Attach the foot pedal: Plug the pedal cord into the designated jack on the right side of the machine.
3. Connect to power: Plug the machine's power cord into a standard 120V AC outlet.
4. Install the needle: Use the included screwdriver to loosen the needle clamp screw, insert needle with flat side to the back, and tighten screw securely.
5. Wind and insert the bobbin: Follow the threading diagram on the machine to wind the bobbin, then place it in the bobbin case under the needle plate.

WARNING! Ensure the machine is switched off and unplugged during setup. Keep fingers away from the needle area during installation.

First-Time Operation

Power on the machine; familiarize yourself with basic controls.

1. Thread the machine: Follow the numbered threading path printed on the machine. Use the built-in needle threader for the final step.
2. Select a stitch: Turn the Stitch Selector Dial to the desired pattern (e.g., straight stitch).
3. Adjust settings: Set stitch length and width as needed for your fabric.
4. Practice stitching: Place a scrap fabric under the presser foot, lower the foot, and gently press the foot pedal to start sewing.
5. Use reverse stitch: Hold the Reverse Stitch Lever to sew backwards and lock stitches.

CAUTION! Always keep your fingers away from the moving needle. Do not force the fabric; let the feed dogs move it.

Specifications

• Model: Singer 3337 Mechanical Sewing Machine.
• Stitches: 23 Built-in stitches including utility, stretch, and decorative.
• Buttonhole: 4-Step Manual Buttonhole.
• Stitch Length: Adjustable from 0 to 4 mm.
• Stitch Width: Adjustable from 0 to 5 mm.
• Max Sewing Speed: Up to 750 stitches per minute.
• Presser Feet: Includes All-Purpose Foot, Zipper Foot, Buttonhole Foot, and Button Sewing Foot.
• Bobbin: Class 15 transparent bobbin.
• Needle: Standard domestic sewing machine needles (size 11/80 recommended for general use).
• Power Source: 120V AC, 60Hz.
• Weight: Approximately 13.2 lbs (6 kg).

Controls and Functions

Access all functions via dials and levers on the front and side of the machine.

Front Panel: Stitch Selector Dial, Stitch Length Dial, Stitch Width Dial, Reverse Stitch Lever, Bobbin Winder Spindle and Stop, Drop Feed Lever, Presser Foot Lifter.

Stitch Selection: Turn dial to corresponding symbol/number for desired stitch. Stitch Length: Controls distance between stitches (higher number = longer stitch). Stitch Width: Controls side-to-side width of zigzag and decorative stitches. Reverse Stitching: Hold lever down to sew in reverse. Bobbin Winding: Push bobbin onto spindle, guide thread through tension disc, press winder against bobbin to start. Drop Feed: Lower lever to disengage feed dogs for darning or free-motion work.

Basic Stitching Guide

For straight seams, zigzag, and basic decorative stitches.

1. Select fabric and appropriate needle (e.g., size 14/90 for medium-weight fabrics).
2. Thread machine and bobbin correctly.
3. Place fabric under presser foot, lower the foot.
4. Gently press foot pedal to start sewing. Guide fabric lightly with your hands.
5. At end of seam, use reverse stitch to lock, then raise needle and presser foot to remove fabric.

Tip: Always test stitch settings on a fabric scrap before starting your project.

Advanced Functions

Utilizing the machine's specialized features.

1. Four-Step Buttonhole:
   • Attach Buttonhole Foot.
   • Set Stitch Selector to Step 1 (right side zigzag).
   • Sew down one side to desired length.
   • Select Step 2 (bar tack at bottom), sew a few stitches.
   • Select Step 3 (left side zigzag), sew back up.
   • Select Step 4 (bar tack at top), sew a few stitches to complete.
2. Zipper Insertion: Use the Zipper Foot. Baste zipper area, attach foot, adjust needle position, stitch close to zipper teeth.
3. Blind Hem: Use Blind Hem Foot and select blind hem stitch. Fold fabric as per manual, guide fold along foot's guide.
4. Free-Motion Sewing/Darning: Lower feed dogs (Drop Feed Lever), attach Darning Foot, move fabric manually in any direction.

WARNING! Go slowly on thick layers. Always turn handwheel towards you to avoid timing issues.

Maintenance & Cleaning

Unplug machine before any maintenance.

1. Daily: Brush out lint from needle plate and bobbin area using the small brush provided.
2. Monthly/Oil: Apply 1-2 drops of sewing machine oil to designated points as shown in the manual (e.g., hook race). Run machine on scrap fabric to distribute oil.
3. Needle: Replace bent or dull needles immediately. Use correct type and size for fabric.
4. Exterior: Wipe with a soft, dry cloth. Do not use harsh chemicals or sprays.

CAUTION! Use only sewing machine oil. Over-oiling can attract lint and damage fabric.

Safety Information

FCC Part 15: Class B digital device; complies with interference limits for residential use. Copyright © Singer Manufacturing Company. For your safety: Always unplug the machine when not in use, during threading, changing needles, or cleaning. Never sew over pins. Keep the cord away from heated surfaces and foot pedal. This appliance is not intended for use by persons with reduced physical, sensory or mental capabilities.

Warranty & Support

Singer Limited Warranty covers defects in materials and workmanship for a specified period from date of purchase. Proof of purchase required. For support, visit www.singer.com or contact Singer Customer Service at 1-800-4-SINGER. Register your product online for updates.

Troubleshooting

Reset: Unplug machine for 5 minutes if electronic controls behave unexpectedly (though model 3337 is primarily mechanical).

Service: For repairs not covered in manual, contact authorized Singer service center.