mxu 50 Manuel atelier : Page 128

          9. KICK STARTER/DRIVE PULLEY/
   CLUTCH/DRIVEN PULLEY                                                                         ATV 50


 SERVICE INFORMATION
 GENERAL INSTRUCTIONS
 · Avoid getting grease and oil on the drive belt and pulley faces.


 SPECIFICATIONS                                                                          Unit: mm (in)
                Item                            Standard                    Service Limit
 Drive pulley collar O.D.          20.01 (0.8004)20.025 (0.801)              19.97 (0.7988)
 Movable drive face I.D.           20.035 (0.8014)20.085 (0.8034)            20.24 (0.8096)
 Weight roller O.D.                13 (0.52)                                  12.4 (0.496)
 Clutch outer I.D.                 107 (4.28)107.2 (4.288)                       107.5 (4.3)
 Driven face spring free length    98.1 (3.924)                               92.8 (3.712)
 Driven face O.D.                  33.965 (1.3586)33.985 (1.3594)            33.94 (1.3576)
 Movable driven face I.D.          34 (1.36)34.25 (1.37)                      34.4 (1.376)
 Drive belt width                  17.5 (0.7)                                    16.5 (0.66)

 TORQUE VALUES
 Drive face nut                3.8 kgf-m (38 N-m, 27.4 lbf-ft)
 Clutch outer nut              3.8 kgf-m (38 N-m, 27.4 lbf-ft)
 Clutch drive plate nut        5.5 kgf-m (55 N-m, 39.6 lbf-ft)

 SPECIAL TOOLS
 Universal holder                 A120E00017
 Clutch spring compressor         A120E00034
 Bearing outer driver             A120E00037
 Bearing driver pilot             A120E00014

 TROUBLESHOOTING
 Engine starts but motorcycle won`t move             Poor performance at high speed or
 · Worn drive belt                                   lack of power
 · Broken ramp plate                                 · Worn drive belt
 · Worn or damaged clutch lining                     · Weak driven face spring
                                                     · Worn weight roller
                                                     · Faulty driven face
 Engine stalls or motorcycle creeps
 · Broken clutch weight spring

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