Originally Posted by JOHNNY G
I don't want to jack your thread but i have a question I'm new to Mountain biking I just got 2010 katmandu and the chain jumps the last sprocket and goes between the wheel and the sprocket. This mean the back wheel just needs to be pulled back ? Or a major problem ?
It means you need to adjust the stops on your derallieur. If it's a sram deraillieur then they have videos on youtube on how to do this. It takes a phillips screwdriver and about 10 minutes.