HIGHLEAD GA2688-1, Instruction Manual & Parts List, Page: 2 / 35

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CONTENT
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1. PRECAUTIONS BEFORES STARTING OPERATION ……………………………………………………………1
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Safety precautions………………………………………………………………………………………1
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Precautions before starting operation…………………………………………………………… 1
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Precautions for operating conditions …………………………………………………………… 1
2. SPECIFICATION ……………………………………………………………………………………………1
3. PREPARATION FOR OPERATION ……………………………………………………………………………2
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Cleaning the machine …………………………………………………………………………………2
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Examination………………………………………………………………………………………………2
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Lubrication………………………………………………………………………………………………2
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Testing……………………………………………………………………………………………………2
4. HOW TO ATTACH A NEEDL………………………………………………………………………………… 2
5. WINDING OF BOBBIN THREAD………………………………………………………………………………3
6. ADJUSTMENT OF THE BOBBIN WINDER ……………………………………………………………………3
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In case of uneven winding……………………………………………………………………………3
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Winding amount of thread…………………………………………………………………………… 3
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Winding strength……………………………………………………………………………………… 3
7. THREADING …………………………………………………………………………………………………4
8. REMOVING AND INSERTING THE BOBBIN …………………………………………………………………4
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Removing …………………………………………………………………………………………………4
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Installation ……………………………………………………………………………………………4
9. ADJUSTING THE THREAD TENSION…………………………………………………………………………4
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Tension of the Upper thread…………………………………………………………………………5
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Tension of the lower thread…………………………………………………………………………5
10. ADJUSTMENT OF PRESSER PRESSURE ……………………………………………………………………5
11. ADJUSTMENT OF WALKING FOOT AND PRESSER FOOT …………………………………………………6
12. ADJUSTMNET OF STITCH LENGTH
AND FORWARD/BACKWARD SEWING ………………………………………………………………………6
13. FEED DOG HEIGHT ………………………………………………………………………………………6
14. ADJUSTING THE HEIGHT OF THE NEEDLE BAR …………………………………………………………7