mxer mxu 150 Workshop-manual : Page 79

          4. LUBRICATION SYSTEM                                                                ATV 150/125


 SERVICE INFORMATION
 GENERAL INSTRUCTIONS
 · The maintenance of lubrication system can be performed with the engine installed in the frame.
 · Use care when removing and installing the oil pump not to allow dust and foreign matters to
   enter the engine and oil line.
 · Do not attempt to disassemble the oil pump. The oil pump must be replaced as a set when it
   reaches its service limit.
 · After the oil pump is installed, check each part for oil leaks.


 SPECIFICATIONS                                                                        mm (in)
                        Item                               Standard             Service Limit
             Inner rotor-to-outer rotor clearance                              0.12 (0.0048)
  Oil pump Outer rotor-to-pump body clearance                    0.12 (0.0048)
           Rotor end-to-pump body clearance 0.050.1 (0.0020.004) 0.2 (0.008)


 TROUBLESHOOTING
 Oil level too low                                   Poor lubrication pressure
 · Natural oil consumption                           · Oil level too low
 · Oil leaks                                         · Clogged oil filter or oil passages
 · Worn or poorly installed piston rings             · Not use the specified oil
 · Worn valve guide or seal




                                                                                                4-2