Saliva and build up collect in the neck. Put the swab in the bell and then pull it through the neck on a string. This is the same process you used on the mouthpiece, requiring warm water, soap or detergent, and a bottlebrush or toothbrush to be used weekly. Dip the brush into the warm, soapy water and use it to attack the limescale. Rinse out the remainder under a faucet with lukewarm water. Again, this is optional, as the soap and water takes care of the bacteria well enough. Any leftover bacteria or odor can be finished with certainty here.  Pour Sterisol germicide into the neck so that it coats the inside. Let it dry in a clean place on a paper towel for a minute, then rinse it under lukewarm water. Either let it air dry or dry it by hand with a swab or towel before storing. Vinegar can be used here, too. After loosening the limescale with soap, water, and brushing, stop the mouthpiece with a cork. Surface cover any holes, prop the neck upright, then add either cold or lukewarm vinegar. After 30 minutes, rinse out the vinegar with soap and warm water, then dry it in air or by hand.

TL;DR in Indonesian:
Gunakan kain penyeka setelah alat musik selesai dipakai. Bersihkan kerak air. Sterilkan leher saksofon.