I have this foot for my Janome MC6700P. I just took a break from FMQ to look up something on here. There’s a gear on the top of the spring. Depending on which way you turn it the foot will raise or lower. I set mine to where the foot hovers over the fabric. It basically gives you more control to raise the foot beyond the pressor foot knob. Hope this helps. I have no problem using it for FMQ. I bought a ruler foot to use with it too, works great!