Innov-is 4750D
FAQs & Troubleshooting |
How do I adjust an alternate bobbin case(with pink marking or no marking) using an embroidery pattern?
A bobbin case with a green marking has been installed in this machine, with an alternate bobbin case (with pink marking or no marking) provided as an accessory.
When using the embroidery bobbin thread provided, please be sure to choose the green marked bobbin case when performing utility stitch sewing and embroidery functions.
When in the embroidery function mode, the alternate bobbin case (with pink marking or no marking) should be selected when substitute embroidery bobbin threads (other than what is accompanied with your machine) are being used.
The alternate bobbin case (with pink marking or no marking) can be easily adjusted when bobbin tension changes are required to accommodate different bobbin threads.
pink marking or no marking |
Refer to "Cleaning the case" for information on how to remove/install a bobbin case.
(1).Screwdriver(Small) |
(2).Bobbin wound |
(3).Embroidery pattern |
(4).Fabric and |
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surface of fabric |
underside of fabric |
Be sure to check if a bobbin is installed correctly before you embroider the pattern. If you can only see the bobbin thread on both sides of fabric as shown in the left picture, the bobbin is not installed correctly. For details, refer to "Correctly installing a bobbin |
When you adjust an alternate bobbin case, turn a slotted-head(-) screw by a screwdriver(small).
DO NOT adjust the position of the Phillips (+) screw Adjust with a screwdriver(small). |
<Correct tension> * Upper thread slightly appears on the underside of fabric. |
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surface of fabric | underside of fabric |
<Bobbin thread is loose> * Bobbin thread appears slightly on the surface of fabric. |
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surface of fabric |
underside of fabric |
If this occurs, turn the slotted-head screw (-) clockwise, being careful not to over-tighten the screw, approximately 30-45 degrees to increase bobbin tension.
<Bobbin thread is tight> * Upper thread on the surface of fabric seems to be lifting/looping and bobbin thread is not seen on the underside of fabric. |
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surface of fabric |
underside of fabric |
If this occurs, turn the slotted-head screw (-) counterclockwise, being careful not to over-tighten the screw, approximately 30-45 degrees to decrease bobbin tension.
After adjusting an alternate bobbin case, make trial sewing to check thread tension.
If the thread tension is still incorrect, repeat the Procedure 5 until you can obtain a correct thread tension.