Task: fix a bike chain
Assumptions:
Fix a bike chain diy.
Steps:
push the pin halfway out of the broken link with a chain breaker tool
Remove the broken link from the pin.
Connect the two ends of the chain so that the holes line up
Use your chain breaker tool in the opposite direction to push the pin
Loosen the connection to avoid binding
Use bike grease to lubricate your chain
Work it back and forth until the chain becomes loose enough to bend.