From 2008 to 2012 Ninja 250.
This will stop the rough idle and dying our of your bike!!!!!
This video will show you an easy way on how to fix accelerator problem. This is a common problem with these bikes, it's a part of carb maintenance to clean out the Jets. This hack will save you time and money!!
Anyone having this problem should try this, it took me around half an hour to open it and put it back together and my bike started running well.