08-26-2011, 07:31 AM
Does the derailleur (the part the chain loops through by the back gears) move at all when you move the shifter? Is your shifter a little lever on the side of the lower tube of the frame ("frame shifters")? If so, the shifter should have a screw that tightens it to the frame. If that is a little loose, it won't hold the gear and will let the chain/derailleur slide back out to the outer cog when you let go.
Short answer of course it "take it back". It would be pretty bad to put a new chain on a bike and not check the shifting to make sure it's working. But something could have broken or gotten loose the first time you tried to shift.
Short answer of course it "take it back". It would be pretty bad to put a new chain on a bike and not check the shifting to make sure it's working. But something could have broken or gotten loose the first time you tried to shift.
![[-]](https://forums.bikeride.com/images/flatty/collapse.png "[-]")
