Unscrew the clamp or clip the zip ties on the corrugated hose at the inflator end. If there's a pull dump there will be a stainless steel cable inside looped around a stainless steel rod around the end of the inflator. Pull back the corrugated hose to see this. With a pen or other small object, push the steel rod through enough to get the cable off and then do the same for the Air2 by pushing the rod in, looping the cable over the rod and pushing the rod back in place. Put the corrugated hose back over the end of the inflator and zip tie. Done. Orally inflate your BC with air and leave it over night. If it's still full in the morning you did it right.