1. Preparation before threading

Let's take a look at how to prepare for threading the machine.

2. Threading the looper and the needles

Let's take a look at how to thread the looper and the needles.

3. Threading the top cover spreader (When sewing top cover stitch)

When sewing a cover stitch on both back and top side, attach the top cover spreader and top cover thread guide to the machine, and then thread the the top cover spreader.
Let's take a look at how to attach them and thread the spreader.