This manual covers essential safety instructions for operating the JUKI LK-1850 sewing machine, including the use of safety devices, proper handling of power sources, and precautions to prevent personal injury. It also details wiring requirements, motor specifications, and the correct method for installing and maintaining accessories such as the clutch motor and grease reducer.
Additional sections explain routine cleaning, periodic maintenance, and step‑by‑step procedures for greasing the reducer, adjusting tension, and troubleshooting common issues like thread breakage or needle mis‑alignment. This manual is written in Japanese.
| Operating Temperature | 5 °C – 35 °C |
|---|---|
| Relative Humidity | 35 % – 85 % |
Turn off the power switch and unplug the machine before removing or installing the needle or any other part.
Stop the machine, remove the screw, uncap the grease tube, push grease into the tube, repeat the injection, and then tighten the screw.
All safety devices must be in their proper positions before the machine is started or operated.
Use the machine in an environment with temperatures between 5 °C and 35 °C and relative humidity between 35 % and 85 %.