Cleaning & Maintenance Methods: 1. Before use, please test the spray gun kit with clean water to make sure that the spray gun is not blocked. 2. It is recommended to use professional spray gun paint, otherwise the nozzle will be blocked. 3. If the spray gun cannot spray liquid, the gas control knob may be too tight, please adjust the knob at the end of the spray gun. 4. If the use time exceeds 30 minutes, the air compressor should be turned off and allowed to cool down for a few minutes. After that, the air compressor can be used again, which can extend its service life. 5.The nozzle of the spray gun is only 0.3 mm, so it can only spray watercolor paint, ink and properly diluted paint. If the paint and liquid are too thick, please dilute them appropriately with water or thinner. 6.Every time you use the spray gun, please clean the liquid cup and nozzle thoroughly with clean water or cleaning solvent in time, and don't let the paint dry out, so as not to block the spray gun. ATTENTIONS: 1. Add liquid, spray only air, no liquid or no operation, the machine sprays automatically ------Unscrew from behind the spray switch, enter the spray gun, loosen the small nut inside, push the spray needle to the end of the spray gun by hand, and then tighten the small nut inside, the fault can be eliminated. 2. Battery energy issues ------please make sure full charge for the first use to prevent unable charge.When not in use,please turn off the switch in time to prevent damage to the motor. If you find that the spray gun cannot be charged or started, please provide us with your order id, and we will provide you with the solution.