Jack JK-T1790 - Page 7

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Ⅵ. 维修 ……………………………………………………………140
MAINTENANCE
1. 机针和旋梭的同步调整……………………………………………………………140
ADJUSTING THE NEEDLE-TO-HOOK RELATION
2. 上线切刀的调整……………………………………………………………………141
ADJUSTING THE NEEDLE THREAD TRIMMER
3. 布压脚压力的调整…………………………………………………………………142
ADJUSTING THE PRESSER BAR PRESSURE
4. 旋梭压片装置的调整………………………………………………………………143
ADJUSTIMENT OF THE BOBBIN PREWWER UNIT
5. 线张力………………………………………………………………………………143
THREAD TENSION
6. 滤清器的清扫………………………………………………………………………144
CLEANING THE FILTER