rv toilet leak. diy toilet repair-remove valve. large-size of fancy toilet disconnect water supply hose how to replace a toilet fill . a kohler low flush toilet was leaking around the fill valve. quick guide to replace a toilet fill valve – http://wwwhomediyfixes. gallery. shutoff valve with slightly bent handle in off position . the fill valve on this toilet was replaced with a newer, more reliable design, the concentric-float fill valve, and thus there . old flapper valve and lift chain.