dinkstreet 300 i abs 1 Manuale-dofficina : Pagina 47

          3. INSPECTION/ADJUSTMENT                                           Downtown 300i ABS



 VALVE CLEARANCE                                 Cylinder Head Cover

 · Inspect and adjust valve clearance
      while the engine is cold (below 35).
 Remove the seat assy and luggage box.
 Remove the four bolts and then cylinder head
 cover.




 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
                                                                       Bolts
 cover.
 Inspect and adjust valve clearance.                               Top Dead Center Mark
 Valve Clearance: IN: 0.10 mm
                   EX: 0.10 mm
 Loosen the lock nut and adjust by turning the
 adjusting nut
   Special
 Valve Adjuster      E012
 Feeler Gauge

  · Check the valve clearance again after
       the lock nut is tightened.


 CYLINDER COMPRESSION
 Warm up the engine before compression test.

 Remove the center cover and luggage box.
 Remove the spark plug.
 Insert a compression gauge.
 Open the throttle fully and push the starter
 button to test the compression.
                                    2
 Max. Compression: 162 kg/cm - 570 rpm

 If the compression is low, check for the
 following:
 Leaky valves
 Valve clearance too small
 Leaking cylinder head gasket
 Worn piston rings
 Worn piston/cylinder
 If the compression is high, it indicates that
 carbon deposits have accumulated on the
 combustion chamber and the piston head.


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