I have the Brother PQ1500S which is pretty much the same machine. I give it a quick dusting around the bobbin race after a bobbin change. When I'm finished with my project I give it a good going over by taking out the bobbin, cleaning the race and dusting out that area. I remove the feed dog plate to clean the lint out of the feed dogs and around them. I give everything a drop of oil where the manual indicates then I run it for a few minutes to work the oil into the nooks and cranny's. I replace the bobbin case with no bobbin ( prevents rust ) put the machine back together, Wipe off the case of the machine to remove dust and finger prints, put a piece of cloth under the presser foot, lower the needle and the presser foot and put it away 'til the next time I use it. I do this with all of my machines.