User manual SHIMANO FC-MX71 TECHNICAL INSTRUCTIONS

[. . . ] If this is not done, the chain may break and cause serious injury. · The two left crank arm mounting bolts should be tightened alternately in stages rather than each bolt being fully tightened all at once. Use a torque wrench to check that the final tightening torques are within the range of 12 - 14 N·m. [. . . ] · 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. The surface with the Shimano logo should face toward the outside. · 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. Using alkaline or acidic detergents may cause discoloration. · 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. [. . . ] lbs. } Push in the stopper plate and check that the plate pin is securely in place, and then tighten the bolt of the left crank arm. (5 mm Allen key) Note : Each of the bolts should be evenly and equally tightened to 12 - 14 N·m {106 122 in. 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. [. . . ]