User manual SHIMANO FC-MX71 TECHNICAL INSTRUCTIONS

[. . . ] SI-1MA0A-001-00 General Safety Information WARNING · Be careful not to let the cuffs of your clothes get caught in the chain while riding, otherwise you may fall off the bicycle. · Check that the tension of the chain is correct and that the chain is not damaged. If the tension is too weak or the chain is damaged, the chain should be replaced. [. . . ] If adjustments are not carried out correctly, the chain may come off and this may cause you to fall off the bicycle which could result in serious injury. · Read these Technical Service Instructions carefully, and keep them in a safe place for later reference. Specifications Model number Chainwheel tooth combination Bolt circle diameter Crank arm length Pedal threads Applicable chain Chain line Bottom bracket shell width (Thread dimensions) Applicable bottom bracket FC-MX71 (SM-CR80-A) 34 / 38 / 41 / 42 / 43 / 44 / 46 T 104 mm 165, 170, 175, 180 mm B. C. (English thread) CN-7701 44 mm 68 mm (1. 37 X 24 T. P. I. ) SM-BB70-S Installation of the chainring (SM-CR80-A) Install the chainring to the rightside crank arm as shown in the illustration. SM-CR80-A Note: · When installing, make sure that the chainring is facing the correct way. · Check that the nuts are securely fitted into the counterbores on the inside of the chainring as shown in the illustration, and then tighten the bolts. 68mm Spacer installation method (1) Check whether the width of the bottom bracket shell is 68 mm. (2) Next, install the adapter while referring to the illustrations below. Tightening torque : 14 - 16 N·m {122 - 139 in. lbs. } Counterbore (2. 5 mm) Inside Nut Outside Inside Outside Bolt Note · In addition, if pedaling performance does not feel normal, check this once more. · Before riding the bicycle, check that there is no play or looseness in the connection. Also, be sure to retighten the crank arms and pedals at periodic intervals. · If a squeaking noise is heard coming from the bottom bracket axle and the left crank arm connector, apply grease to the connector and then tighten it to the specified torque. · Use a neutral detergent to clean the crank arm and the bottom bracket. · Do not wash the bottom bracket with high-pressure jets of water. · If you feel any looseness in the bearings, the bottom bracket should be replaced. · You should periodically wash the chainrings in a neutral detergent and then lubricate them again. In addition, cleaning the chain with neutral detergent and lubricating it can be an effective way of extending the useful life of the chainrings and the chain. · If the chain keeps coming off the chainrings during use, replace the chainrings and the chain. · The cuffs of your clothing may get dirty from the chain while riding. [. . . ] lbs. }. Push up 5 1 FC-MX71 TL-FC16 6 2 Inner cover Bottom bracket shell Plate pin One Holland, Irvine, California 92618, U. S. A. Phone: +1-949-951-5003 Industrieweg 24, 8071 CT Nunspeet, The Netherlands Phone: +31-341-272222 3-77 Oimatsu-cho, Sakai-ku, Sakai-shi, Osaka 590-8577, Japan * Service Instructions in further languages are available at : http://techdocs. shimano. com Please note: specifications are subject to change for improvement without notice. XBC SZK Printed in Japan. Stopper plate Note : Set the stopper plate in the right direction as shown in illustration. [. . . ]