This document is the user manual of DU-1181 sewing machine. It mainly introduces the safety use methods, precautions and warning signs of the sewing machine.
The manual begins with important safety instructions, emphasizing basic safety measures, the need for trained operators, and the use of proper safety devices. It also outlines precautions for electrical work, oil handling, and machine modifications.
Subsequent sections cover installation, belt and bobbin setup, threading, adjustments of stitch length, needle‑to‑hook relationship, motor pulley and V‑belt selection, and a detailed troubleshooting guide for common sewing problems. This manual is written in Japanese.
| Motor power | 400 W |
|---|---|
| Motor type | 4P |
| V‑belt type | M‑type |
| Motor pulley effective diameter | Outer diameter minus 5 mm |
Read all instructions, keep safety devices in position, ensure the machine is used by trained operators, wear safety glasses, and turn off power when performing adjustments.
Use a 4‑phase 400 W motor with an M‑type V‑belt; the motor pulley’s effective diameter is the outer diameter minus 5 mm, and belt length must follow the provided table.
Run the machine at a speed of 1,800 rpm or less during the first month.
Only spare parts designated by JUKI may be used for repairs.