Check to see if the chain going to the flapper is getting hung up. If not,loosen the nut behind the lever 1/2 turn. If that doesn't work take it off and clean it with a mild soap and put back on. Do not over tighten the retaining nut. That should do the trick. If not,you can get a new one at any hardware store or home improvement warehouse. Home Depot,Lowes Ace ,True Value , they all carry them.
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Check to see if the chain going to the flapper is getting hung up. If not,loosen the nut behind the lever 1/2 turn. If that doesn't work take it off and clean it with a mild soap and put back on. Do not over tighten the retaining nut. That should do the trick. If not,you can get a new one at any hardware store or home improvement warehouse. Home Depot,Lowes Ace ,True Value , they all carry them.