to replace:
remove snare wires and bottom head of snare.
unscrew the old throw off from inside the drum shell.
replace the old throw off with the new one (bago bumili, make sure na magkaparehas ng distance ng mounting holes yung bagong throw off sa lumang throw off. to be safe, bring the old one pag bibili ka para ma-compare mo side-by-side)
after screwing the new throw off securely in place, replace bottom head and snare wire.
if nothing else is broken or loose, the snare drum could take a beating again.