4. LUBRICATION SYSTEM                                                     MXU 550EXi/MXU500i



 SERVICE INFORMATION

 GENERAL INSTRUCTIONS
 · The oil pump service may be done with the engine installed in the frame.
 · When removing and installing the oil pump use care not to allow dust or dirt to enter the engine.
 · If any portion of the oil pump is worn beyond the specified service limits, replace the oil pump as
   an assembly.
 · After the engine has been installed check that there are no oil leaks and that oil pressure is
   correct.



 SPECIFICATIONS                                                                          Unit: mm
                ITEM                               STANDARD                      SERVICE LIMIT

 Engine oil At draining                                3 liter                           
 capacity At disassembly                              3.6 liter                          
                                      KYMCO 4-stroke oil or equivalent
                                      motor oil
 Recommended engine oil
                                      API service classification SJ                      
                                      Viscosity: SAE 5W-50
                   Tip clearance                    0.15    max                          0.2
 Oil pump rotor Body clearance                       0.15 ­ 0.2                         0.25
                   Side clearance                   0.04 ­ 0.09                         0.12



 TORQUE VALUES

 Oil pump screw             0.3 kgf-m (3 N-m )
 Oil strainer screen cap    1.5 kgf-m (15 N-m) Apply oil to the threads and seating surface.
 Oil filter cartridge       1 kgf-m (10 N-m)   Apply oil to the threads and seating surface.
 Oil pipe bolt              3.5 kgf-m (35 N-m) Apply oil to the threads and seating surface.




 Special tool:
 Oil seal & bearing drive    A120E00014




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