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| Adjust the hook time |
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Adjust the tension of the upper thread |
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| Set the upper thread detecter |
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Adjust the tension of the lower thread |
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| Adjust the height of the presser foot |
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Set the driving cam of the presser foot |
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| Set the presser foot adjusting arm |
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Adjust the vertical mobility range of the presser foot |
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| Set the shuttle top face spring |
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Adjust the opening of the main thread adjusting device plate |
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| Adjust the height of the feed plate(solenoid type) |
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Adjust the height of the feed plate(pneumatic) |
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| Set the wiper |
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Replace the needle plate cover |
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