In this video, we show how to install the new rotary hook and prepare it for timing. As a helpful tip when working alone, we wedge the smallest screwdriver against the indicator wheel so it stays at 200 degrees while we work around the hook area. To begin installation, we place the rotary hook assembly onto the main shaft with the screws loose enough for it to slide on cleanly. We then set the hook in place and, if possible with a second person, rotate the main indicator wheel to 200 degrees and gently tighten the side set screw just enough to hold the hook.
We next rotate the indicator wheel to 160 degrees and lightly tighten that screw, then rotate to 100 degrees and lightly tighten that screw as well. We do not fully tighten any of these screws yet, because the rotary hook still needs to be able to shift during setup. After that, we return the indicator wheel to 200 degrees and install the rotary hook support by pulling it into position. We make sure the small finger on the support is correctly holding the basket, which prevents that part from spinning.
With the support in place, we check that the rotary hook is approximately where it needs to be behind the needle so the support can be adjusted properly. We then set the support so there is a slight space between the support and the basket, using a needle as a gauge to confirm the gap before tightening the screws. After checking that the basket does not spin freely, we fine-tune the support position if the spacing is slightly too wide, making sure to leave enough gap for the bobbin thread to pass through. Once the support is secured, the rotary hook is ready to be timed, ideally at 199 to 201 degrees on a single-head machine, with 200 degrees preferred.
Since rotary hook installation is usually followed by thread path checks, it’s a good time to review embroidery thread options.