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Chain comes off when peddling backwards

roverthehillroverthehill Posts: 155
edited March 2012 in MTB workshop & tech
A bit of a newbie so apologies if a basic question!!

Having some probs with my new(ish) bike. Today, the chain can't falling off when I peddled backwards, even a half turn backwards causes issues. Particularly problematic when in the low gear at the front and high gear at the back. In fact, even peddling forwards was an issue when in the low gear in the front (bottom) and high gear at back (bottom). The chain looks a little grubby so I'm degreasing it good and proper this avo. A few weeks ago, I adjusted the cable tension on the rear derailer - could that have an effect too?

Basically the chain looks to be really loose when in certain gears.

Any advice would be appreciated.


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