I’ve got a yongheng but assuming they’re the same, attach case breather vent after filling with oil. Hook up water cooling lines to bucket with pump. I just use distilled water/antifreze in a ice cream bucket as I only fill guns. (Leaving room for ice bottles when needed) Drop of silicone oil on female foster o-ring first run and occasionally afterwards. Could double check fittings and bolts for snugness but don’t over tighten any. I wouldn’t disassemble anything until problem occurs though. Good luck with yours and have fun shooting.