Air won't go into AirZound or Bottle is full but AirZound won't make any sound at all
Two possibilities:
1) Sometimes the fixed inner pin of the pump is recessed too far. It needs to push down the inner pin of the horn's refill valve in order to get air in the bottle.
Either pick up a pump with a shallower inner pin or try pushing pump's head further down over the refill valve and locking the pump to it, then disengage pump carefully.
Or:
2) Air is not entering or exiting the system smoothly. First - make sure the volume control knob is not shutting off the air through the tube. The wider flat end should be pointing to the front of the horn. Or maybe the black tube is kinked somewhere. Try pulling the brass refill valve out of the horn a half inch or so, then reseat it by tugging on the tube where it exits the horn, on the other side of the volume knob. Pull the tube until the valve is all the way back down, but still protruding 5/16". Also give the tube a quick tug where it connects to the bottle.
Air Zound makes a "windy" sound. Not as loud as it used to be
It's possible some dirt has lodged between the membrane and the resonator inside the horn. To fix this, try turning the back cap (where AIR ZOUND is embossed) a 1/4" turn to the left, then a 1/4" turn back to the right. A wrench may be necessary. This should re-seat the membrane. Give it a try.
If it's still 'windy' try turning back cap to the left until it pops off. Then check to make sure membrane is flat & clean (spiders have been known to move in). Reassemble, then push & turn back cap all the way back
on.
Airzound looses air over time. it leaks
Submerge parts of the AZ in water and check to see where the leak is. If it is the tube email us at airzound2@aol.com and we will send a barbed connector to fix it. If it is the valve, a bike or an auto mechanic will have a special tool that will tighten the valve's inner pin. If it is the bottle cap, use a wrench & give it an extra little (i.e. 1/8") turn.
Air escapes around the button when the button is pressed
The valve may be sticking out too high above the horn. Lower it by pulling on the tube where it exits the horn, next to the volume control knob.
Valve pulled out after filling
Some bike pumps have difficulty letting go of our refill valve and pull it out a bit. To remedy this, pull on the tube where it exits the horn (on the other side of the volume knob). This should lower and re-seat the valve.
Apply a UV protectant (like ArmourAll) to the tube to extend its life.