dinkstreet 125 Manuel atelier : Page 87

          7. CYLINDER/PISTON                                                             DOWNTOWN 125i


 SERVICE INFORMATION
 GENERAL INSTRUCTIONS

 · When installing the cylinder, use a new cylinder gasket and make sure that the dowel pins are
   correctly installed.
 · After disassembly, clean the removed parts and dry them with compressed air before inspection.


 SPECIFICATIONS                                                                       Unit: mm
                      Item                                        Standard
                                                                 52.452.41
                I.D.
                Warpage                                              
 Cylinder
                Cylindricity                                         
                True roundness                                       
                Ring-to-groove      Top                          0.0150.055
                clearance           Second                       0.0150.055
                                    Top                          0.100..25
                Ring end gap        Second                       0.100..25
                                    Oil side rail                  0.20.7
  Piston,                                                        52.3752.39
                Piston O.D.
  piston ring
                Piston O.D. measuring position            9 mm from bottom of skirt


                Piston-to-cylinder clearance                      0.010.04
                Piston pin hole I.D.                            15.00215.008
 Piston pin O.D                                                   14.99415
 Piston-to-piston pin clearance                                  0.0020.014
 Connecting rod small end I.D. bore                             15.01615.034




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