DJ, I am just catching up on the postings... When I clean mine, I take the throat plate off, take out the bobbin mechanism, take a Q-Tip and kinda pick up majority of the lint. My son bought me a small air compressor last summer and when I really want to clean it, I use it to blow all open holes out, down under the bobbin case, etc. Also, all around the threader, etc. I keep canned air in my sewing rm, and blow out machines with that ever so often. When finished w/that, I put a drop of oil (Zoom Spout) in the hole in the bobbin hole (where you set your bobbin).
Using a good thread makes a big difference too. I've used all brands, can't really say there's any one brand that's really bad. Some will produce more 'dust' than others. You'll know after you sew something and see a lot of dust. That just means you need to blow the machine out more often..lol
Hope this helped you.. Have fun with it - they're neat machines.
Jean