How to Fix a Derailed Chain on a Gear Bike?

[Archer]

For a gear bike with a derailed chain, you can adjust the L limit screw on the front derailleur to increase the distance between the sprocket and the rear wheel. Hold the pedal with one hand to secure the front sprocket, and with the other hand, straighten the chain to engage it with the upper part of the rear sprocket.

[LeKaden]

Hey, a dropped bike chain can be really annoying. I recommend starting with safety: stop the bike and stand it steady, don't rush to ride. After the chain falls off, check if the front or rear derailleur is misaligned, then gently use your hand or a small tool to hook it back onto the correct large gear—try pushing it onto the smallest gear first. If it keeps falling off, the derailleur limit screws might need adjustment, or the chain could be too loose or worn out, requiring tightening or replacement. Regular maintenance like cleaning off grease and checking chain tension can prevent many issues. Experienced riders know these minor problems are common, but simple fixes get you back on the road quickly—carrying a bike multi-tool is super handy in such moments, so don’t stress too much. After all, the joy of cycling outweighs these small hiccups; a few practices will make you faster at handling them.