Below is an online video on how to adjust your gears. Your issue could be a number of things: - cable is seized or full of gunk- make sure that it is cleaned out and lubed before you try to adjust your deraileur. - check the two lockout screws on the deraileur - one handles the high and other handles the low gear. Their purpose is to make sure the chain doent fall into the spokes as well as the frame when reaching the extreme ends of the shift.
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Below is an online video on how to adjust your gears. Your issue could be a number of things:
- cable is seized or full of gunk- make sure that it is cleaned out and lubed before you try to adjust your deraileur.
- check the two lockout screws on the deraileur - one handles the high and other handles the low gear. Their purpose is to make sure the chain doent fall into the spokes as well as the frame when reaching the extreme ends of the shift.
http://bicycletutor.com/adjust-rear-derailleur/