mxu 250 300 2 Workshop-manual : Page 134

          8. CYLINDER/PISTON                                                                MXU 300/250

 SPECIFICATIONS                                                                 Unit: mm (in)
                     Item                              Standard              Service Limit
                I.D.                           72.70572.715                72.8 (2.912)
                                               (2.90822.9086)
                Warpage                                                    0.05 (0.002)
  Cylinder
                Cylindricity                                               0.05 (0.002)
                True roundness                                             0.05 (0.002)
                                  Top          0.0150.055                  0.09 (0.0036)
                Ring-to-groove                 (0.00060.0022)
                clearance                      0.0150.055
                                  Second                                   0.09 (0.0036)
                                               (0.00060.0022)
                                  Top          0.150.3 (0.0060.012)        0.5 (0.02)
  Piston,       Ring end gap      Second       0.30.45 (0.0120.018)        0.65 (0.026)
  Piston ring                     Oil ring     0.20.7 (0.0080.028)         0.9 (0.036)
                Piston O.D.                    72.6772.69                  72.6 (2.904)
                                               (2.90682.9076)
                Piston O.D. measuring position 10mm from bottom of skirt           
 .                                             0.010.04
                Piston-to-cylinder clearance                               0.1 (0.004)
                                               (0.00040.0016)
                Piston pin hole I.D.           17.00217.008                17.04 (0.6816)
                                               (0.680080.68032)
  Piston pin O.D                               16.99417                    16.96 (0.6784)
                                               (0.679760.68)
  Piston-to-piston pin clearance               0.0020.014                  0.02 (0.0008)
                                               (0.000080.00056
  Connecting rod small end I.D. bore           17.01617.034                17.06 (0.6824)
                                               (0.680640.68136)




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