mxer mxu 150 Workshop-manual : Page 65

          3. INSPECTION/ADJUSTMENT                                                         ATV 150/125

                                                      Cylinder Head Cover
 VALVE CLEARANCE
 Inspect and adjust valve clearance while
   the engine is cold (below 35).
 Remove the cylinder head cover.




                                                                            Bolts


 Turn the flywheel counterclockwise so that
 the "T" mark on the flywheel aligns with
 the index mark on the crankcase to bring the
 round hole on the camshaft gear facing up
 to the top dead center on the compression
 stroke.




                                                                          Punch Marks
                                                                      Valve Wrench
 Inspect and adjust the valve clearance.
 Valve Clearance: IN: 0.06 mm (0.0024 in)
                    EX: 0.06 mm (0.0024 in)
 Loosen the lock nut and adjust by turning
 the adjusting nut
 Special tool:
 Tappet adjuster     E012
 · Check the valve clearance again after
     the lock nut is tightened.


 CARBURETOR IDLE SPEED                                     Throttle Stop Screw
 · The engine must be warm for accurate
     idle speed inspection and adjustment.
 Warm up the engine before this operation.
 Start the engine and connect a tachometer.
 Turn the throttle stop screw to obtain the
 specified idle speed.
 Idle Speed: 1700100rpm
 When the engine misses or run erratic,
 adjust the air screw.
                                                Throttle Stop Screw


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