- 1). Check clarinet for leaks. Work with the main bore of the clarinet. Have a second person cover all of the keys with a normal touch. Blow through the bore, softly at first, then harder. Feel for leaks around the pads.
- 2). Determine if the screw holding the arm with the leaking pad is loose. If so, tighten the screw and try the leak test again to see if the problem was fixed. Be gentle with the screwdriver, since tightening too much will destroy the heads. Use a screwdriver that fits, because a screwdriver that is too small will destroy the slot.
- 3). Check the spring power. If the spring is not springing back powerfully enough, check first to see if it needs to be cleaned. If so, clean with a dab of citrus goo cleaner or lighter fluid on a cotton swab. Oil the spring with instrument oil. If this is not effective, gently bend the spring in the direction it should be pushing. This will only work a limited number of times before the spring breaks. Use a rubber band in an emergency, such as before a concert when there is no time to take the instrument in for repair. Broken springs should be replaced by an instrument care professional.
- 4). Test the key pad. If it is not closing perfectly, try a temporary fix. Moisten the leather pad with a few drops of water until it is soft. Hold the key down for several minutes to allow the pad to cover the hole completely.
- 5). Replace the pad, if needed. If the pad is cracked or damaged and moistening it does not work, it's necessary to replace the pad. Warm the key with a hot hairdryer, since the glue used to hold pads in is heat sensitive. Once the key is warm, gently remove the old pad and clean the pad cup with citrus goo cleaner or lighter fluid and a cotton swab. Find a new pad that fits. Sealing wax is the traditional glue for installing clarinet pads, but modern technicians use hot glue.
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