Singer Upper Thread Tension Check Spring - Part # 125316 - Replacement for 15-88, 15-89, 15-90, 15-91, 15-125
Singer Upper Thread Tension Check Spring - Part # 125316 - Replacement for 15-88, 15-89, 15-90, 15-91, 15-125 is backordered and will ship as soon as it is back in stock.
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Singer Upper Thread Tension Check Spring - Part # 125316 - Replacem...
Description
Description
Singer Upper Thread Tension Check Spring - Part #125316
The Singer Upper Thread Tension Check Spring (Part #125316) is a small but essential component in your vintage Singer sewing machine's tension assembly. This aftermarket replacement spring controls thread tension during stitching, preventing loops, slack, and uneven stitches that can ruin your sewing projects.
Important Compatibility Note: This spring is designed specifically for later Singer 15-class models. It is NOT compatible with earlier models like 15-30, 15-86, 15-87, 15-96, 15-97, or 115 due to differences in tension assembly design.
What the Upper Thread Tension Check Spring Does
Think of this spring as a shock absorber for your thread - it compensates for the rapid movements of the take-up lever and needle, keeping the thread under consistent control throughout the stitch cycle.
Key Functions:
- Maintains Thread Tension: Applies precise tension to the upper thread as the take-up lever moves, ensuring the thread doesn't go slack between stitches
- Prevents Loops: Pulls the thread upward at exactly the right moment to stop loops from forming on the underside of your fabric
- Synchronizes Stitch Formation: Works in harmony with the tension discs and take-up lever to create balanced, even stitches
- Ensures Smooth Thread Flow: Helps thread feed evenly through the machine, reducing thread breakage and skipped stitches
- Controls Thread Release: Manages thread tension during the presser foot lift cycle
Compatible Singer Models
This spring fits the following Singer 15-class models:
- Singer 15-88
- Singer 15-89
- Singer 15-90
- Singer 15-91
- Singer 15-125
NOT Compatible With: Singer 15-30, 15-86, 15-87, 15-96, 15-97, or 115. These earlier models use a different tension assembly design and require a different spring.
Signs You Need a Replacement Tension Check Spring
If you're experiencing any of these issues, your tension check spring may be worn or damaged:
- Loops forming on the underside of fabric despite adjusting tension settings
- Inconsistent stitch quality or uneven tension
- Thread going slack between stitches
- Thread breakage or skipped stitches
- Visible damage, bending, or weakening of the existing spring
- Spring has lost its tension over years of use
Product Specifications
- Singer Part Number: 125316
- Type: Aftermarket replacement part
- Color: May vary - black or silver finish
- Location: Upper tension assembly
- Function: Thread tension control and check spring
- Compatibility: Singer 15-88, 15-89, 15-90, 15-91, 15-125 only
Why Replace Your Tension Check Spring?
Over decades of use, the tension check spring can weaken, bend, or lose its ability to maintain proper tension. Even a small amount of wear can significantly affect stitch quality. Replacing this inexpensive component can restore your vintage Singer to like-new performance and eliminate frustrating tension problems.
This is a common maintenance item for vintage Singer 15-class machines and an easy DIY repair that can save you time and frustration.
Installation & Compatibility Notes
The tension check spring is located in the upper tension assembly of your Singer sewing machine. While installation is straightforward for those familiar with vintage Singer machines, you'll need to access the tension assembly to replace the spring.
Before ordering, verify your model number: This spring only fits Singer 15-88, 15-89, 15-90, 15-91, and 15-125. If you have an earlier Singer 15-class model (15-87, 15-86, etc.), this spring will not fit due to design differences in the tension assembly.
Why Choose This Replacement Spring?
We stock quality aftermarket replacement parts for vintage Singer sewing machines to keep your machine running smoothly. This tension check spring is manufactured to meet or exceed original specifications, ensuring reliable performance and proper fit on compatible models.
Order your Singer Upper Thread Tension Check Spring (Part #125316) today and restore smooth, even stitching to your vintage Singer 15-class machine.
Specifications
Specifications
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