Why does my bike chain gets stuck?
Why a chain gets stuck between chainrings and frame? A chain gets stuck between the crankset and frame for lots of reasons. However, the most common ones are the derailleur being poorly adjusted, small sprocket being bent, teeth being bent, the chain having a stuck link, or the chain being bent.
How do I remove a chain from a bike without tools?
If your chain has a master link, remove the link by twisting it off with a pair of needle nose pliers. Press the nubs through to the other side to fully remove the link. You may need to use a hammer or wrench to tap the link so that it pops out allowing the chain to separate.
If you have a standard chain with no master link: Seat the chain in the chain tool, with the pin of the chain tool aligned with a pin in the chain. Turn the handle of the chain tool until you push the pin out far enough that you can break the chain.
To disconnect this type of link, place one jaw of your pliers on the chain pin, and the other jaw on the open end of the clip. Then squeeze your pliers until the clip pops off. Then you can remove the outer plate and slide out the rest of the link.