<human>:  How do I repair a running toilet?
<bot>: To repair a running toilet, you will need to first identify what the issue is. If the water is constantly running, check to make sure the lift chain connected to the flapper is properly in place. If the chain is too long, shorten it so it is taut but not over-tightened. It could also be that the flapper valve is worn out or stuck in an open position, in which case you would need to replace it. If the toilet fills too quickly, it could be because the float is not properly positioned, so adjust the float to the appropriate level. Once the problem is identified, use the appropriate tools to make the repair.