<human>:  How do I fix a broken bicycle chain?
<bot>: To fix a broken bicycle chain, you need to first determine the cause of the break. Once you have identified the reason for the break, you can then take the steps necessary to repair it. Depending on the severity of the break, you may need to purchase new parts, including a new chain, a link, or even a master link. Once you have the new parts, you can then carefully remove the broken chain and follow the instructions that come with the new parts to reconnect the chain.