How to clean an HVLP spray gun??

I put some laquer thinner in the cup, shake while holding my thumb over the vent and then pull the trigger and let it flow into my waste can. You can use air to spray it out but your just putting all that material airborne.
After doing that a couple times pull the gun apart and clean each part, dry then reassemble. No, you cant get it clean by just spraying through it.
I always clean as soon as possible once finished spraying. Its not as critical with epoxys as it is with a 2k high build. I had some flash off too early once and had an entire gun full of the stuff. Luckily I caught it while it was still rubbery so I was able to get it all cleaned out.