vitality 50 2t 4t 1 Manuel atelier : Page 61

          3. INSPECTION/ADJUSTMENT                                                         VITALITY 50


 VALVE CLEARANCE                                                       "T" Mark
 (4-STROKE)
 · Inspect and adjust valve clearance
     while the engine is cold (below 35).

 Remove the met-in box ( 13-5) and center
 cover. ( 13-6)
 Remove cylinder head cover. ( 6-4)

 Turn the A.C. generator flywheel to the top
 dead center (TDC) on the compression
 stroke so that the "T" mark on the flywheel
 aligns with the index mark on the left
 crankcase cover.
                                                                                    Index Mark
 The time marks on the cam sprocket must
 be flush with the cylinder head surface and
 round hole on the cam sprocket must be
 facing up as shown.

 If the round hole on the cam sprocket are
 facing down, turn the crankshaft clockwise
 one full turn and realign the timing marks
 with the cylinder head surface so it is facing
 up.




                                                   Round Hole                    Time Marks


 Insert a thickness gauge between the valve                            Thickness Gauge
 stem end and the adjusting screw on the
 rocker arm.
 If the clearance is out of specification, bring
 it into the specified range.
 Valve Clearance: IN: 0.04mm
                      EX: 0.04mm
 Loosen the lock nut and adjust by turning
 the adjusting nut
   Special
 Valve Adjuster      E036
 · Check the valve clearance again after
     the lock nut is tightened.
                                                                Valve Adjuster



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