Shimano Altus ST CT-90 21 speed needs repair

2 ANSWERS

1. amomipais82
   

   Hi,
   You need to adjust the deraillures. To adjust the rear deraillur use the adjustment barrel s***w located at the back of the deraillur where the cable enters. For the front deraillur you will need to tighten the cable. If this doesn't work you will need to loosen the cable then pull it tighter and this use the adjustment barrel s***w again to fine tune it. If this doesn't work bring it to a shop and the prices vary by the amount of work needed.
   
   Hope it helps

   Report (0) (0)  |   12 years, 9 month(s) ago  

2. Guest9801
   

   Takes a little bit to sort it out but if your patient you should be able to tune it nicely.   Also how long since you have properly greased the chain and the derailleurs?

   Report (0) (0)  |   12 years, 9 month(s) ago