Take a few pictures of how the chain wraps in the derailleurs and cogs of the wheels
Is your bike chain warn, slipping or giving you problems while you ride? Don't worry, replacing your bike chain is a snap.
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
Turn the handle to start forcing the pin out of the chain entirely
Use the chain tool to push the new pin through the chain link