How to Put On a Bicycle Chain

If the chain on your bicycle has come loose, it is possible for you to fix it yourself. If you can, get a helper to make the process easier - you can get your helper to hold the front wheel so that you can work on the back wheel.

Steps   

  1. Hook the chain back on. The easiest way to repair a loose chain is to hook the chain onto the bottom sprocket and pedal backwards. Put the bike on a stand or, if you don't have one, get your helper to hold the rear wheel off the ground as you put the chain back on. Don't try and hook onto the top of the chain ring, always hook onto the bottom and pedal backwards.
  2. Pedal forwards until it is in the right gear. Otherwise, keep changing gear until the chain pedals smoothly.
  3. Loosen the quick release if the chain is jammed. Sometimes the chain gets jammed between the smallest sprocket and the frame. In this case, it's a good idea to loosen the quick release and undo the wheel nut to ease out the chain. The quick release is opened by pulling the lever.
  4. Loosen the wheel nut on the other side once you have pulled open the quick release. Now adjust the chain like before.
  5. Tighten. When closing the quick release, you should be able to close it completely. It should be tight, but not too hard to push. If it feels too tight, loosen the wheel nut by the derailleur. Likewise, if it's too loose, then tighten the wheel nut.
  6. Perform some final checks. Before you ride away, make sure you are in a comfortable gear. Pedal and change gear on both the rear and front derailleur.


Tips   

  • It doesn't mean there is anything wrong with your bike if your chain comes off now and then but if it keeps falling off, it could mean that there is something that needs to be checked by a bicycle mechanic.
  • If you find that your chain is still loose and you cannot get to a bike mechanic, it may be necessary to remove links from the chain to shorten it. Only do this if you know what you are doing though!
  • If you can, you might like to purchase a tool called a chain-tensioner. Purchase a pair and follow the instructions on the package. Usually you'll need a Philips head screwdriver or an Allen wrench of a certain size. These are great for getting your chain at the correct tight fit.
  • It is always important to learn basic chain repair skills. Not only will you save paying a mechanic for simple faults, but you will also save yourself the risk of getting stranded far away from the nearest service shop.


Warnings   

  • Be sure not to put your finger(s) in the chain or you risk injuring your finger(s), including having a finger cut off.
  • Tie back long hair and dangling clothing before undertaking any repairs involving bicycle chains.