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How to Fix Thread Tension on a Juki DDL-8700

Introdução

This guide will fix the thread tension on a Juki DDL-8700 lockstitch industrial sewing machine.

When working on sewing projects, you often change the fabric and threads that you use. With this, the sewing machine tension must be adjusted before sewing. Without proper thread tension, loops and bundles of thread (bird nests) can be created, rendering the sewing machine almost unusable.

This guide will demonstrate how to fix thread tension issues, returning the machine to working order.

O que você precisa

  1. How to Fix Thread Tension on a Juki DDL-8700, How to Fix Thread Tension on a Juki DDL-8700: passo 1, imagem 1 %32 How to Fix Thread Tension on a Juki DDL-8700, How to Fix Thread Tension on a Juki DDL-8700: passo 1, imagem 2 %32 How to Fix Thread Tension on a Juki DDL-8700, How to Fix Thread Tension on a Juki DDL-8700: passo 1, imagem 3 %32

    • Thread the machine.

    • Insert the bobbin case.

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  2. How to Fix Thread Tension on a Juki DDL-8700: passo 2, imagem 1 %32 How to Fix Thread Tension on a Juki DDL-8700: passo 2, imagem 2 %32 How to Fix Thread Tension on a Juki DDL-8700: passo 2, imagem 3 %32

    • Sew a straight line on scrap fabric to test thread tension.

    • Be cautious when placing your fingers near the needle when working with the machine turned on.

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  3. How to Fix Thread Tension on a Juki DDL-8700: passo 3, imagem 1 %32 How to Fix Thread Tension on a Juki DDL-8700: passo 3, imagem 2 %32

    • Check the fabric for loose thread tension.

    • Look out for loops of thread on the top and bottom of the fabric.

    • The bobbin case tension is too loose if loops are on the top of the fabric.

    • The upper thread tension is too loose if the loops are on the bottom of the fabric.

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  4. How to Fix Thread Tension on a Juki DDL-8700: passo 4, imagem 1 %32 How to Fix Thread Tension on a Juki DDL-8700: passo 4, imagem 2 %32

    • Take out the bobbin case.

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  6. How to Fix Thread Tension on a Juki DDL-8700: passo 5, imagem 1 %32 How to Fix Thread Tension on a Juki DDL-8700: passo 5, imagem 2 %32 How to Fix Thread Tension on a Juki DDL-8700: passo 5, imagem 3 %32

    • Create a baseline thread tension for the bobbin case by tightening or loosening the screw on the bobbin case.

    • Thread should not easily unravel but can be pulled loosely.

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  7. How to Fix Thread Tension on a Juki DDL-8700: passo 6, imagem 1 %32 How to Fix Thread Tension on a Juki DDL-8700: passo 6, imagem 2 %32

    • Reinsert the bobbin case into the machine.

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  8. How to Fix Thread Tension on a Juki DDL-8700: passo 7, imagem 1 %32 How to Fix Thread Tension on a Juki DDL-8700: passo 7, imagem 2 %32 How to Fix Thread Tension on a Juki DDL-8700: passo 7, imagem 3 %32

    • Sew another straight line on the scrap fabric next to the previous line.

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  9. How to Fix Thread Tension on a Juki DDL-8700: passo 8, imagem 1 %32 How to Fix Thread Tension on a Juki DDL-8700: passo 8, imagem 2 %32 How to Fix Thread Tension on a Juki DDL-8700: passo 8, imagem 3 %32

    • Check the front and back thread tension of the scrap fabric for loose stitches.

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  10. How to Fix Thread Tension on a Juki DDL-8700: passo 9, imagem 1 %32 How to Fix Thread Tension on a Juki DDL-8700: passo 9, imagem 2 %32 How to Fix Thread Tension on a Juki DDL-8700: passo 9, imagem 3 %32

    • Adjust the upper thread tension.

    • If there are loose stitches on the top of the fabric, loosen the upper thread tension by turning the tension knob counterclockwise.

    • If there are loose stitches on the bottom of the fabric, tighten the upper thread tension by turning the tension knob clockwise.

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  11. How to Fix Thread Tension on a Juki DDL-8700: passo 10, imagem 1 %32 How to Fix Thread Tension on a Juki DDL-8700: passo 10, imagem 2 %32 How to Fix Thread Tension on a Juki DDL-8700: passo 10, imagem 3 %32

    • Check the thread tension by sewing another straight line on the scrap fabric next to the previous line.

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  12. How to Fix Thread Tension on a Juki DDL-8700: passo 11, imagem 1 %32 How to Fix Thread Tension on a Juki DDL-8700: passo 11, imagem 2 %32 How to Fix Thread Tension on a Juki DDL-8700: passo 11, imagem 3 %32

    • Check the front and back thread tension of the scrap fabric for loose stitches.

    • The thread tension is correct if there are no loose stitches.

    • Repeat steps 5-8 as needed to achieve a consistent thread tension without loops on top or bottom of scrap fabric.

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Autor(a)

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Brandon Mammon

Membro desde: 11/05/24

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UC Davis, Team 1-9, Vidal-Chiesa Fall 2024 Membro de UC Davis, Team 1-9, Vidal-Chiesa Fall 2024

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