How To Put Chain On Rear Derailleur. When passing the chain through the rear derailleur pass it to the rear derailleur body from the side of the pinplate for preventing chain derailment as shown in the illustration. Use your left hand mostly your thumb to push it as much as you can.

The length of your derailleurs cage defines the range or spread of gears you can have on your bike the longer the cage the more slack in the chain the derailleur can take up. Thread the Bike Chain to the Back Cassette. When passing the chain through the rear derailleur pass it to the rear derailleur body from the side of the pinplate for preventing chain derailment as shown in the illustration.
The majority of road and mountain bike derailleurs require a gap between 5 and 6 millimeters.
The front one moves the chain between the chainrings while the rear one moves the chain between the sprockets of the rear wheel. Reach down with your free hand and pull back the derailleur with your hand to. All mountain bike rear derailleurs are installed initially the same way. How to adjust a rear derailleur and index your bikes gears Set the limit screws.
