30 I General User ManualCheck that the inner cable is correctly seated insidethe pulley guide.CJ-8S20JAPANLOCKCJ-8S20JAPANLOCKGuide OK Guide not OK19 Bike gears19.1 Derailleur gearsThis User Manual describes the handling of typical, com-mercially available gear-shift components for MTB, ATB,cross and road bikes. Separate instructions are providedfor other components on the CD or on the web pages of therelevant manufacturer in the Internet. If you have ques-tions on installation, adjustment, maintenance and opera-tion, please consult a specialist cycle shop.If gear-shift components are loose, worn, damaged oradjusted incorrectly, this poses a risk of injury to therider. Have the derailleur gears adjusted at a profes-sional bike workshop.• Always contact your specialist cycle shop if thechain jumps off the chainrings or sprockets whenriding or• you hear unusual noises or• you cannot change gears easily or• the rear derailleur, front derailleur or othergear-shift components are loose, damaged ordistorted or• chain links are defective or worn.