My daughters mt sport sx roadmaster bike keeps changing gears and making a clicking sound. What causes this?
phililisa03-
This problem is caused by improperly adjusted derailers/shifters, the mechanism that move the chain from one gear to the next. It is not uncommon for the derailers to be out of adjustment after sitting unused through the winter. Over time the cables that run between the shifters and the derailers stretch just a bit and the derailers no longer work as well without a little tuning up. Unfortunately, for the novice, adjusting the derailers is frustrating at best. The effort and patience it requires is nothing to take lightly. If you're game for giving it a try, there are a number of websites out there that will provide extensive guidance on the process - just "google" how to adjust bike derailers" and you will find plenty of options. My local bike shop will make adjustments like this for a small set price, around $20 or so - you may have a shop nearby that will do the same.
Hope this helps.
Regards,
DIYpro
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