[. . . ] General Safety Information WARNING · Use neutral detergent to clean the chain. Do not use alkali-based or acid based detergent such as rust cleaners as it may result in damage and/or failure of the chain. [. . . ] · If gear shifting operations cannot be carried out smoothly, clean the derailleur and lubricate all moving parts. · If the amount of looseness in the links is so great that adjustment is not possible, you should replace the derailleur. · You should periodically clean the derailleur and lubricate all moving parts (mechanism and pulleys). · If gear shifting adjustment cannot be carried out, check the degree of parallelism at the rear end of the bicycle. Also check if the cable is lubricated and if the outer casing is too long or too short. · If you hear abnormal noise as a result of looseness in a pulley, you should replace the pulley. · Grease the inner cable and the inside of the outer casing before use to ensure that they slide properly. · Use a frame with internal cable routing is strongly discouraged as it has tendencies to impair the SIS shifting function due to its high cable resistance. · Parts are not guaranteed against natural wear or deterioration resulting from normal use. · For maximum performance we highly recommend Shimano lubricants and maintenance products. [. . . ] For the best SIS performance, periodically lubricate all powertransmission parts. One Holland, Irvine, California 92618, U. S. A. Phone: +1-949-951-5003 Chain Industrieweg 24, 8071 CT Nunspeet, The Netherlands Phone: +31-341-272222 3-77 Oimatsu-cho, Sakai, Osaka 590-8577, Japan Please note: specifications are subject to change for improvement without notice. [. . . ]