1. When the machine needle touches the guard needle incline of the shuttle, it needs to adjust its position correctly. If it still encounters the machine needle, it needs to replace the shuttle.
2. The type of machine needle, because of the different type of machine needle, the depth of the groove of the needle is also different, at the same time, it has an impact on whether it touches the bevel of the guard needle.
3. Exclude the computer quilting machine needle itself is not smooth, burr, quality is not up to standard. Standard computer quilting machine needles with good quality should be selected.
4. When the machine needle touches the hook head of the shuttle, it is necessary to correctly adjust the hook position of the shuttle.