stryker 125 Workshop-manual : Page 68

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          6. CYLINDER HEAD/VALVES                                             STRYKER 125/150

 Ream the guides to remove any carbon
 build-up using a valve guide reamer.
 Special Tool
 Valve Guide Reamer
 During this operation, rotate the reamer
    clockwise and do not insert or remove it
    straight when it is stopped.



                                               Valve Guide Reamer




Measure each valve guide I.D.
Service Limits: IN: 5.780mm replace if
                  over
                  EX: 5.780mm replace if
                  over
Subtract each valve stem O.D. from the
corresponding guide I.D. to obtain the
stem-to-guide clearance.
Service Limits: IN: 0.080mm
                  EX: 0.10mm
 · If the stem-to-guide clearance exceeds
     the service limits, replace the guides.
   · Reface the valve seats whenever the
     valve guides are replaced.




 VALVE GUIDE REPLACEMENT
 Drive out the old valve guides with the
 valve guide driver.

 · Remove carbon build-up from the
      guides before driving them out.
    · Drive the guides out vertically.

 Special Tool
 Valve Guide Driver
                                               Valve Guide Driver




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