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Brother CS-80 Tire Ring Replacement

Introduction

Use this guide to replace a worn out tire ring for the bobbin winder of a Brother CS-80 sewing machine.

Over time and with constant usage, the bobbin winder tire ring in a Brother CS-80 sewing machine can wear out, break, or even disintegrate. You may need to replace your tire ring if your machine has issues with winding the bobbin correctly.

What you need

  1. Brother CS-80 Tire Ring Replacement, Tire Ring: step 1, image 1 of 3 Brother CS-80 Tire Ring Replacement, Tire Ring: step 1, image 2 of 3 Brother CS-80 Tire Ring Replacement, Tire Ring: step 1, image 3 of 3

    • Turn off the machine.

    • Unplug both the power cord and the foot pedal.

    Edit

  2. Brother CS-80 Tire Ring Replacement: step 2, image 1 of 1

    • Slide the clear flap to the left to remove it.

    Edit

  3. Brother CS-80 Tire Ring Replacement: step 3, image 1 of 3 Brother CS-80 Tire Ring Replacement: step 3, image 2 of 3 Brother CS-80 Tire Ring Replacement: step 3, image 3 of 3

    • Pull the latch to detach the bobbin cover.

    Edit

  4. Brother CS-80 Tire Ring Replacement: step 4, image 1 of 2 Brother CS-80 Tire Ring Replacement: step 4, image 2 of 2

    • Remove the bobbin from the bobbin shuttle.

    Edit

  5. Brother CS-80 Tire Ring Replacement: step 5, image 1 of 2 Brother CS-80 Tire Ring Replacement: step 5, image 2 of 2

    • Use a flathead screwdriver to pry off the plastic plate that surrounds the bobbin shuttle.

    Edit

  6. Brother CS-80 Tire Ring Replacement: step 6, image 1 of 3 Brother CS-80 Tire Ring Replacement: step 6, image 2 of 3 Brother CS-80 Tire Ring Replacement: step 6, image 3 of 3

    • Open the bobbin winder cover.

    • Flip up the spool pin.

    Edit

  7. Brother CS-80 Tire Ring Replacement: step 7, image 1 of 3 Brother CS-80 Tire Ring Replacement: step 7, image 2 of 3 Brother CS-80 Tire Ring Replacement: step 7, image 3 of 3

    • Remove the grey bobbin winder seat from the bobbin winder shaft.

    Edit

  8. Brother CS-80 Tire Ring Replacement: step 8, image 1 of 3 Brother CS-80 Tire Ring Replacement: step 8, image 2 of 3 Brother CS-80 Tire Ring Replacement: step 8, image 3 of 3

    • Remove the 13 mm Phillips head screw from the left side of the bobbin winder.

    • Place the screw on a magnet (or in a tray) to ensure you don't lose it.

    Edit

  9. Brother CS-80 Tire Ring Replacement: step 9, image 1 of 3 Brother CS-80 Tire Ring Replacement: step 9, image 2 of 3 Brother CS-80 Tire Ring Replacement: step 9, image 3 of 3

    • Pry off the bobbin winder thread spool pin and the attached bottom plate of the bobbin winder area.

    • Use a flathead screwdriver to assist you in removing the plate.

    Edit

  10. Brother CS-80 Tire Ring Replacement: step 10, image 1 of 2 Brother CS-80 Tire Ring Replacement: step 10, image 2 of 2

    • Remove the 8 mm Phillips head screw from the metal plate to the right of the motherboard.

    Edit

  12. Brother CS-80 Tire Ring Replacement: step 11, image 1 of 2 Brother CS-80 Tire Ring Replacement: step 11, image 2 of 2

    • Open the thread compartment.

    • Press the back level on left side of the machine to eject the thread cassette compartment.

    Edit

  13. Brother CS-80 Tire Ring Replacement: step 12, image 1 of 3 Brother CS-80 Tire Ring Replacement: step 12, image 2 of 3 Brother CS-80 Tire Ring Replacement: step 12, image 3 of 3

    • Remove the thread cassette compartment by pulling it up.

    • Remove the front clear shield to the thread cassette compartment holder by pulling it away from the machine.

    Edit

  14. Brother CS-80 Tire Ring Replacement: step 13, image 1 of 2 Brother CS-80 Tire Ring Replacement: step 13, image 2 of 2

    • Remove the single 19 mm Phillips head screw from the back of the internal thread cassette compartment area.

    Edit

  15. Brother CS-80 Tire Ring Replacement: step 14, image 1 of 2 Brother CS-80 Tire Ring Replacement: step 14, image 2 of 2

    • Turn the machine so the back is facing you.

    Edit

  16. Brother CS-80 Tire Ring Replacement: step 15, image 1 of 3 Brother CS-80 Tire Ring Replacement: step 15, image 2 of 3 Brother CS-80 Tire Ring Replacement: step 15, image 3 of 3

    • Remove the three large 19 mm Phillips head screws from the back left face of the machine.

    Edit

  17. Brother CS-80 Tire Ring Replacement: step 16, image 1 of 2 Brother CS-80 Tire Ring Replacement: step 16, image 2 of 2

    • Remove the 19 mm Phillips head screw from behind the handle of the machine.

    Edit

  18. Brother CS-80 Tire Ring Replacement: step 17, image 1 of 2 Brother CS-80 Tire Ring Replacement: step 17, image 2 of 2

    • Remove the large 19 mm Phillips screw from the bottom right of the machine.

    • You should have unscrewed a total of five 19 mm large screws from the back face.

    Edit

  19. Brother CS-80 Tire Ring Replacement: step 18, image 1 of 3 Brother CS-80 Tire Ring Replacement: step 18, image 2 of 3 Brother CS-80 Tire Ring Replacement: step 18, image 3 of 3

    • Remove the 33 mm Phillips head screw by the presser foot lever.

    Edit

  20. Brother CS-80 Tire Ring Replacement: step 19, image 1 of 2 Brother CS-80 Tire Ring Replacement: step 19, image 2 of 2

    • Slowly pull apart the two sides of the sewing machine.

    • The two halves will still be partially attached by cables on the inside. Take care not to damage any of the cables.

    Edit

  21. Brother CS-80 Tire Ring Replacement: step 20, image 1 of 2 Brother CS-80 Tire Ring Replacement: step 20, image 2 of 2

    • Gently disconnect the ribbon cable from the motherboard.

    Edit

  22. Brother CS-80 Tire Ring Replacement: step 21, image 1 of 2 Brother CS-80 Tire Ring Replacement: step 21, image 2 of 2

    • Disconnect the 6-pin connector from the motherboard.

    Edit

  23. Brother CS-80 Tire Ring Replacement: step 22, image 1 of 3 Brother CS-80 Tire Ring Replacement: step 22, image 2 of 3 Brother CS-80 Tire Ring Replacement: step 22, image 3 of 3

    • Completely pull apart the two halves of the machine.

    • Set aside the front side piece.

    • Place the back piece down so that the inside faces upwards.

    Edit

  24. Brother CS-80 Tire Ring Replacement: step 23, image 1 of 3 Brother CS-80 Tire Ring Replacement: step 23, image 2 of 3 Brother CS-80 Tire Ring Replacement: step 23, image 3 of 3

    • Remove the gold 9 mm Phillips screw from the front right of the motherboard.

    • Remove the two silver 7 mm Phillips head screws from the front and back of the left side of the motherboard.

    Edit

  25. Brother CS-80 Tire Ring Replacement: step 24, image 1 of 3 Brother CS-80 Tire Ring Replacement: step 24, image 2 of 3 Brother CS-80 Tire Ring Replacement: step 24, image 3 of 3

    • Slide out the motherboard from the white plastic motherboard housing.

    • Handle the motherboard gently to avoid damaging the circuits or connectors.

    Edit

  26. Brother CS-80 Tire Ring Replacement: step 25, image 1 of 2 Brother CS-80 Tire Ring Replacement: step 25, image 2 of 2

    • Disconnect the 3-pin connector from the front left side of the motherboard.

    Edit

  27. Brother CS-80 Tire Ring Replacement: step 26, image 1 of 2 Brother CS-80 Tire Ring Replacement: step 26, image 2 of 2

    • Disconnect the 4-pin connector from the left underside of the motherboard.

    Edit

  28. Brother CS-80 Tire Ring Replacement: step 27, image 1 of 3 Brother CS-80 Tire Ring Replacement: step 27, image 2 of 3 Brother CS-80 Tire Ring Replacement: step 27, image 3 of 3

    • Flip the motherboard over so it rests upside down and away from the balance wheel.

    • Handle the motherboard gently to avoid damaging the circuits or connectors.

    Edit

  29. Brother CS-80 Tire Ring Replacement: step 28, image 1 of 2 Brother CS-80 Tire Ring Replacement: step 28, image 2 of 2

    • Use a flathead screwdriver to pry off the tire ring.

    • The tire ring may have disintegrated and deposited black rubber on the inside of the machine. If so, clean the area with rubbing alcohol with q-tips and paper towels. Wearing disposable gloves is recommended.

    Edit

  30. Brother CS-80 Tire Ring Replacement: step 29, image 1 of 3 Brother CS-80 Tire Ring Replacement: step 29, image 2 of 3 Brother CS-80 Tire Ring Replacement: step 29, image 3 of 3

    • Place the new tire ring onto its seat.

    • You may need to use a flathead screwdriver to help it seat fully.

    Edit
Conclusion

To reassemble your sewing machine, follow the disassembly instructions in reverse order.

Author

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Edyn

Member since: 04/25/24

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Team

UC Davis, Team 1-5, Whithaus Spring 2024 Member of UC Davis, Team 1-5, Whithaus Spring 2024

UCD-WHITHAUS-S24S1G5

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