How to replace a bike chain

Take a few pictures of how the chain wraps in the derailleurs and cogs of the wheels

Clean the bike chain

Use a clean rag with a degreaser. Lightly wrap the rag around the chain then rotate the pedals in reverse to slide the chain through the rag

Place the chain tool on the chain

Turn the handle to start forcing the pin out of the chain entirely

Now, remove the old chain

Route the new chain in through the derailleurs and cranks

Use the chain tool to push the new pin through the chain link

Apply a small amount of oil to the rag and smear down the chain

Run the chain through the various gears of the bike for 30 seconds