grand dink 250 Workshop-manual : Page 45

          3. INSPECTION/ADJUSTMENT                                                   GRAND DINK 250

                                                                   Bolts
 VALVE CLEARANCE
 · Inspect and adjust valve clearance
     while the engine is cold (below 35).

 Remove the cylinder head cover.




                                                         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
 cover.




                                                                       Top Dead Center Mark

 Inspect and adjust valve clearance.
 Valve Clearance: IN: 0.1mm
                    EX: 0.1mm
 Loosen the lock nut and adjust by turning the
 adjusting nut
   Special
 Valve Adjuster
 · Check the valve clearance again after
     the lock nut is tightened.
                                                  Feeler Gauge
 CARBURETOR IDLE SPEED
                                                 Throttle Stop Screw
 · The engine must be warm for accurate
     idle speed inspection and adjustment.
 Lift up the seat and remove the inspection
 cover.
 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 pilot screw.
                                                                               Pilot Screw

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