kxr 50 90 Manuel atelier : Page 122

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          8. CYLINDER/PISTON                                              Mongoose/KXR 90/50


 PISTON RING INSTALLATION
 Install the piston rings onto the piston.
 Apply engine oil to each piston ring.
 · Be careful not to damage or break the
     piston and piston rings.
   · All rings should be installed with the
     markings facing up.
                                                                        Top
   · After installing the rings, they should
     rotate freely without sticking.                                    Second
                                                                        Side Rail
                                                                        Oil Ring
                                                                        Side Rail




 Measure the connecting rod small end I.D.
 Service Limit: 13.06mm replace if over

 Measure the connecting rod to piston pin
 clearance.
 Service Limit: 0.06mm replace if over




                                                                       Intake Side Guide

 Inspect the exhaust side and intake side
 chain guides.
 Wear/Damage  Replace.




                                               Exhaust Side Guide



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