mxu 250 300 2 Werkstatthandbuch : Seite 139

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Seite 138

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Seite 140

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Seite 141

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          8. CYLINDER/PISTON                             MXU 300/250


 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 (replace if over):
                      17.06 mm (0.6824 in)

 Measure the connecting rod to piston pin
 clearance.

 Service Limit (replace if over):
                       0.06 mm (0.0024 in)




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