How do i fix my bikes grip shifters?

I have a 21 speed bike and the left grip shifter is stuck on 1 and wont **** to either 2 or 3. My right grip shifter is stuck on 7-5 but wont sifter do any of the lower numbers. any help with this would be greatly appreciated.

Tim C2012-08-20T18:54:40Z

Favorite Answer

You probably have rust in your shift cables. Replace the cables and oil the derailleurs.

Anonymous2012-08-21T19:04:44Z

Never had that problem, but maybe this can help you: http://2wheelbikes.com/bike-assembly.html