FAQ :FAQ
# The needle thread is not tight enough.
Check： Is the needle thread tension too weak, or is the lower thread tension too strong?
Adjustment：
Adjust the needle thread tension or lower thread tension.
--The lower thread is not tight enough.
Check： Is the lower thread tension too weak, or is the needle thread tension too strong?
Adjustment：
Adjust the lower thread tension or needle thread tension.
-- Loops appear in seam.
Check： Is the thread path not smooth enough?
Adjustment：
Use sandpaper to polish smooth the thread path.
Check： Is the bobbin not turning smoothly?
Adjustment：
Pull out the lower thread to check that there is no slackness in the thread tension, or replace the bobbin or bobbin case.
-- Skipping stitches occur while sewing.
Check： Is the needle tip bent? Is the needle tip blunt?
Adjustment：
If the needle tip is bent or broken, replace it.
Check： Is the needle properly installed?
Adjustment：
If it is incorrect, install the needle correctly.
Check： Is the machine properly threaded?
Adjustment：
If it is incorrect, thread the thread correctly.
Check： Is the presser foot pressure too weak?
Adjustment：
Adjust the presser foot pressure.
Check： Is the needle too thin?
Adjustment：
Replace the needle with a needle that is one rank thicker.
--Skipped stitches or unraveled thread at sewing start.
Check： Is the needle tip bent? Is the needle tip blunt?
Adjustment：
If the needle tip is bent or broken, replace it.
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