Between colors, I just wipe the color cup with a paper towel, put some thinner in there and blow it through until it's clear again, then I put in the new color, no problem at all.
For a real thorough cleaning after painting, I wipe the paint out of the bowl, fill it with thinner and blow it out at a high pressure. Then I fill it with thinner again and take an old brush and wipe the cup out really well, being sure to hit around the needle and cravases really well, then I blow it out again. Next I fill it with thinner again and backflush it a little, then blow one or two more cups out at a high pressure.
About every two or three times of this sort of cleaning, I take it completely apart, put my little nozzle in a small cup of thinner, I use pipe cleaners, qtips and paper towels to clean everything in the brush really really well. I use an extra fine microbrush to clean out the inside of the nozzle. I soak a pipe cleaner in thinner, turn the brush upside down and run the pipe cleaner though the body a couple of times, then I blow any fibers that are left behind out. I always look and make sure I haven't left any hairs or anything inside the body of the brush. (when I eventually get a set of airbrush cleaning brushes that step will be a lot easier ) Then I put some lube on the needle and put the whole thing back together again. When you re-assemble the brush, remember to put the nozzle on before putting the needle back. You don't want to try to force the nozzle over the needle and maybe split it. Be gentle, don't force anything. That should do it for you, it's not really hard to clean at all. It's a great airbrush and I love mine.
Madda
Trifles make perfection, but perfection is no trifle. -- Leonardo Da Vinci
Tact is for those who lack the wit for sarcasm.--maddafinga