When I purchased this kit, I didn’t have high expectations as a typical German made airbrush is 5-20x the price of this entire kit. When I unboxed the airbrush kit, I noticed it came with SO MANY cleaning accessories including a plunger needle! It comes with a parts code insert to reorder replacement parts as well. I did not see a well written instruction manual like a “quick start” guide but if you understand the basic operation of an airbrush, then it’s conventional operation in every way. For those buying this unit and never have operated an airbrush:
1. Airbrush is assembled and ready to use out of the box
2. I believe the default needle is 0.30mm
3. Connect the air hose to the compressor, then zip tie it to the output nozzle.
4. Connect the top of the water separator to the base of the airbrush.
5. Connect the other end of the hose to the bottom of the water separator. Don’t forget the rubber washer/o-ring to properly seal the fitment.
6. On the airbrush:
1- inspect the nozzle and the sleeved adapter on the front and secure the fitment by ensuring it’s adequately tightened.
2- the rear of the airbrush is a flume adjuster to control the amount of paint by limiting the 2-stage trigger on how far back it can be pulled when the trigger is engaged. Clock-wise rotation to limit paint volume output and counter click-wise to increase paint flow.
3- Turn on the compressor: press down on the trigger and you should feel air from the nozzle tip.
4- Attach the reservoir cup to the airbrush
5-Fill a small amount of paint in the reservoir cup, and secure the top lid.
7. Set the compressor to the desired psi output. There are 3 mode levels. I personally found level 2 to be the right amount for my application (RC Body shell painting).
Cleaning - prepare the following BEFORE disassembling the airbrush:
Shop paper towels, 2oz condiment cup filled with 0.5oz of tool cleaner, a second empty 2oz condiment cup and the cleaning brushes included in the kit
1. Empty unused paint back into original paint bottle
2. Pour a small amount of tool cleaner in the airbrush reservoir cup.
3. Place finger over nozzle and press trigger on airbrush. This will force air bubbles back into reservoir, then dump the liquid into empty condiment cup, then use shop paper towel to wipe away remnants.
4. Remove reservoir cup and place in condiment cup with cleaner fluid
5. Remove nozzle tip and connecting adapter, then place in condiment cup with tool cleaner
6. Remove rear part of airbrush, then carefully remove needle.
7. Clean needle with tool cleaner fluid, and set aside to dry.
8. Clean airbrush apparatus with brushes and tool cleaner, then set aside to dry.
9. Clean remaining soaked parts in condiment cup with brushes and tool cleaner, the. Set aside to dry.
10. Once dry, reassemble airbrush for next use.
Neil 
