Singer 15-88, 15-89, 15-90 Instruction Manual

Pages 68

Year 1951

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of 68

Singer 15-88, 15-89, 15-90 Specification

The Singer 15-88, 15-89, and 15-90 models are renowned for their robust construction and versatility in sewing applications. These machines are part of the iconic Singer 15 series, celebrated for their durability and precision. Each model features a cast iron body, ensuring stability and longevity, making them ideal for heavy-duty sewing tasks. The 15-88 is a treadle-operated machine, offering a traditional sewing experience with foot pedal control, while the 15-89 includes an electric motor, providing ease of use and consistent sewing speed. The 15-90, like the 15-89, is also electrically powered but distinguished by its potted motor design, which integrates the motor into the machine’s housing for smoother operation and reduced noise.

All three models feature a side-loading, oscillating shuttle hook system, which is known for its reliability and precision in stitch formation. They support a straight stitch with adjustable stitch length, allowing users to tailor their stitching to various fabric types and project requirements. The sturdy feed dog mechanism ensures consistent fabric movement, even when working with thicker materials.

The machines are equipped with a manual thread tension adjustment, enabling users to fine-tune the stitch quality according to their specific needs. The presser foot pressure is also adjustable, providing additional control over fabric handling. These models accommodate a range of presser foot attachments, expanding their versatility. The Singer 15 series, with its timeless design and mechanical simplicity, continues to be favored by sewing enthusiasts for its ability to deliver precise and reliable performance across a wide array of sewing tasks.

Singer 15-88, 15-89, 15-90 F.A.Q.

How do I thread the Singer 15-88 sewing machine?

To thread the Singer 15-88, first, raise the presser foot to release tension. Place the spool on the spool pin and draw the thread through the thread guide. Pull the thread down and around the tension discs, then up through the take-up lever. Pass it down again through the guides and thread the needle from front to back.

What should I do if the needle keeps breaking on my Singer 15-89?

If the needle keeps breaking, ensure it is inserted correctly and not bent. Check the needle size against the fabric type, and verify that it’s threaded properly. Also, inspect the bobbin case and needle plate for damage or misalignment.

How can I adjust the tension on the Singer 15-90?

To adjust the tension on the Singer 15-90, use the tension dial located near the front of the machine. Turn the dial to the right to increase tension or to the left to decrease it. Test on a scrap fabric until balanced stitching is achieved.

Why is my Singer 15-88 sewing machine skipping stitches?

Skipping stitches can be caused by a dull or wrong size needle, incorrect threading, or tension issues. Re-thread the machine, replace the needle, and ensure the tension is set correctly. Check that the fabric and needle are compatible.

What maintenance does the Singer 15-89 require to keep it running smoothly?

Regular maintenance includes cleaning the bobbin case area, oiling the machine as per the manual's instructions, and checking for any loose screws. Replace needles frequently and cover the machine when not in use to prevent dust buildup.

How do I wind a bobbin on the Singer 15-90?

Place an empty bobbin on the bobbin winder spindle. Guide thread from the spool through the bobbin winder tension disc and wrap it around the bobbin a few times. Push the spindle to engage the winder, hold the thread end, and start the machine. Stop when the bobbin is full.

My Singer 15-88 machine is making a loud noise. What should I check?

Check for any obstructions in the needle or bobbin area, and ensure the machine is well-oiled. Inspect the drive belt for wear or damage. Tighten any loose screws and ensure that the needle and presser foot are installed correctly.

What is the proper way to clean the Singer 15-89 sewing machine?

Turn off and unplug the machine. Use a small brush to remove lint and dust from the bobbin case, feed dogs, and tension discs. Wipe the exterior with a soft cloth and oil the machine as directed in the manual. Avoid using compressed air as it can push debris further into the machine.

How do I adjust the stitch length on my Singer 15-90?

Adjust the stitch length on the Singer 15-90 by turning the stitch length dial, usually located on the front of the machine. Turn clockwise for shorter stitches or counterclockwise for longer stitches. Test on fabric to ensure the desired length.

Can I use modern needles and threads with my vintage Singer 15-88?

Yes, modern needles and threads can be used with the Singer 15-88. Ensure the needle size is appropriate for the fabric, and use good quality thread to avoid excessive lint and breakage. Refer to the manual for compatible needle sizes.