Once you have the manual in hand, here is the procedural essence of what you will find. Perform this only with the machine unplugged.

This follows a separate path toward the back of the machine. It is vital that this thread does not tangle with the overlock threads. Essential Maintenance Procedures

Hit Verified ((full)) - Manual Kingtex Sh 6000 Series

Once you have the manual in hand, here is the procedural essence of what you will find. Perform this only with the machine unplugged.

This follows a separate path toward the back of the machine. It is vital that this thread does not tangle with the overlock threads. Essential Maintenance Procedures