Loosen with a Chain Tool Place the stiff link into the chain tool, on the slots closest to the turning handle. Now thread the chain tool’s pin gently against the chain pin about 1/8th of a turn, or just enough to slightly loosen the chain plates. That should loosen it enough.
The thing that causes most stiff links is compressing the sideplates too tightly together, a natural result of using a chain tool that presses in the chain pin under great force to install the chain. The safe way to free a stiff link is to use a chain tool and push on both ends of the pin causing the stiff link.
How do I know if my bicycle chain is too tight?
The chain should be tight enough that it only allows you to move it up and down about half an inch. If there is no slack in the chain then it is too tight. And if there is too much slack then you need to tighten that chain.
Do all bike chains have a master link? Nope, not all chains have master links. If your bicycle has derailleurs, it means it’s unlikely that your bike’s chain will have a master link.
What kind of lube should I use on my bike chain?
Use a light, waterproof lube such as Boeshield T-9 Waterproof Lubricant. For wet-weather conditions, try Pedro’s Chainj. Never Use: Motor oil—it contains acids and particles of metal that can compromise a chain’s strength and cause it to wear more quickly.
To find the master link on your chain, mount your bike in a bike work stand. If you don’t have a work stand, flip the bike over so it rests on its handlebars and saddle. Stand on the drivetrain side of your bike so you’re able to look straight down on the chain.