This manual explains the safety requirements for the DDL-9000A series sewing machine, including the need for all safety devices to be in place and the prohibition of operating the machine without a grounded power supply. It also outlines who may perform repairs and the use of only JUKI‑approved spare parts.
The document contains detailed sections on installation, adjustment of the knee lifter, thread stand, lubrication, needle and bobbin setup, hook oil adjustment, threading, stitch length, pedal operation, and other functional adjustments, as well as routine care and troubleshooting guidance. This manual is written in Chinese.
All safety devices must be in position when the machine is ready for work or in operation.
No, for safety the machine must never be operated with the ground wire for the power supply removed.
Repairs must be carried out only by appropriately trained technicians, and only JUKI‑specified spare parts may be used.